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Auto merge of #132147 - estebank:long-types-2, r=davidtwco

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Tweak E0277 output when a candidate is available

*Follow up to #132086.*

Go from

```
error[E0277]: the trait bound `Then<Ignored<chumsky::combinator::Filter<chumsky::primitive::Any<&str, chumsky::extra::Full<EmptyErr, (), ()>>, {closure@src/main.rs:9:17: 9:27}>, char>, chumsky::combinator::Map<impl CSTParser<'a, O>, O, {closure@src/main.rs:11:24: 11:27}>, (), (), chumsky::extra::Full<EmptyErr, (), ()>>: CSTParser<'a>` is not satisfied
 --> src/main.rs:7:50
  |
7 | fn leaf<'a, O>(parser: impl CSTParser<'a, O>) -> impl CSTParser<'a, ()> {
  |                                                  ^^^^^^^^^^^^^^^^^^^^^^ the trait `chumsky::private::ParserSealed<'_, &str, (), chumsky::extra::Full<EmptyErr, (), ()>>` is not implemented for `Then<Ignored<Filter<Any<&str, ...>, ...>, ...>, ..., ..., ..., ...>`, which is required by `Then<Ignored<chumsky::combinator::Filter<chumsky::primitive::Any<&str, chumsky::extra::Full<EmptyErr, (), ()>>, {closure@src/main.rs:9:17: 9:27}>, char>, chumsky::combinator::Map<impl CSTParser<'a, O>, O, {closure@src/main.rs:11:24: 11:27}>, (), (), chumsky::extra::Full<EmptyErr, (), ()>>: CSTParser<'a>`
  |
  = help: the trait `chumsky::private::ParserSealed<'_, &'a str, ((), ()), chumsky::extra::Full<EmptyErr, (), ()>>` is implemented for `Then<Ignored<chumsky::combinator::Filter<chumsky::primitive::Any<&str, chumsky::extra::Full<EmptyErr, (), ()>>, {closure@src/main.rs:9:17: 9:27}>, char>, chumsky::combinator::Map<impl CSTParser<'a, O>, O, {closure@src/main.rs:11:24: 11:27}>, (), (), chumsky::extra::Full<EmptyErr, (), ()>>`
  = help: for that trait implementation, expected `((), ())`, found `()`
  = note: required for `Then<Ignored<Filter<Any<&str, ...>, ...>, ...>, ..., ..., ..., ...>` to implement `Parser<'_, &str, ()>`
note: required for `Then<Ignored<Filter<Any<&str, ...>, ...>, ...>, ..., ..., ..., ...>` to implement `CSTParser<'a>`
 --> src/main.rs:5:16
  |
5 | impl<'a, O, T> CSTParser<'a, O> for T where T: Parser<'a, &'a str, O> {}
  |                ^^^^^^^^^^^^^^^^     ^          ---------------------- unsatisfied trait bound introduced here
  = note: the full name for the type has been written to '/home/gh-estebank/longlong/target/debug/deps/longlong-0008f9a4f2023b08.long-type-13239977239800463552.txt'
  = note: consider using `--verbose` to print the full type name to the console
  = note: the full name for the type has been written to '/home/gh-estebank/longlong/target/debug/deps/longlong-0008f9a4f2023b08.long-type-13239977239800463552.txt'
  = note: consider using `--verbose` to print the full type name to the console
```

to

```
error[E0277]: the trait bound `Then<Ignored<chumsky::combinator::Filter<chumsky::primitive::Any<&str, chumsky::extra::Full<EmptyErr, (), ()>>, {closure@src/main.rs:9:17: 9:27}>, char>, chumsky::combinator::Map<impl CSTParser<'a, O>, O, {closure@src/main.rs:11:24: 11:27}>, (), (), chumsky::extra::Full<EmptyErr, (), ()>>: CSTParser<'a>` is not satisfied
  --> src/main.rs:7:50
   |
7  | fn leaf<'a, O>(parser: impl CSTParser<'a, O>) -> impl CSTParser<'a, ()> {
   |                                                  ^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
...
11 |     ws.then(parser.map(|_| ()))
   |     --------------------------- return type was inferred to be `Then<Ignored<..., ...>, ..., ..., ..., ...>` here
   |
   = help: the trait `ParserSealed<'_, &_, (), Full<_, _, _>>` is not implemented for `Then<Ignored<..., ...>, ..., ..., ..., ...>`
           but trait `ParserSealed<'_, &'a _, ((), ()), Full<_, _, _>>` is implemented for it
   = help: for that trait implementation, expected `((), ())`, found `()`
   = note: required for `Then<Ignored<..., ...>, ..., ..., ..., ...>` to implement `Parser<'_, &str, ()>`
note: required for `Then<Ignored<..., ...>, ..., ..., ..., ...>` to implement `CSTParser<'a>`
  --> src/main.rs:5:16
   |
5  | impl<'a, O, T> CSTParser<'a, O> for T where T: Parser<'a, &'a str, O> {}
   |                ^^^^^^^^^^^^^^^^     ^          ---------------------- unsatisfied trait bound introduced here
   = note: the full name for the type has been written to '/home/gh-estebank/longlong/target/debug/deps/longlong-df9d52be87eada65.long-type-1337037744507305372.txt'
   = note: consider using `--verbose` to print the full type name to the console
```

* Remove redundant wording
* Introduce trait diff highlighting logic and use it
* Fix incorrect "long type written to path" logic (can be split off)
* Point at tail expression in more cases in E0277
* Avoid long primary span labels in E0277 by moving them to a `help`

Fix #132013.

There are individual commits that can be their own PR. If the review load is too big, happy to split them off.
This commit is contained in:
bors 2024-11-02 20:22:49 +00:00
commit b3f75cc872
79 changed files with 487 additions and 227 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
compiler/rustc_middle/src/ty/error.rs
View File

@ -1,5 +1,7 @@
use std::borrow::Cow;
use std::fs::File;
use std::hash::{DefaultHasher, Hash, Hasher};
use std::io::{Read, Write};
use std::path::PathBuf;
use rustc_errors::pluralize;
@ -250,8 +252,8 @@ impl<'tcx> TyCtxt<'tcx> {
}
let width = self.sess.diagnostic_width();
let length_limit = width.saturating_sub(30);
if regular.len() <= width {
let length_limit = width / 2;
if regular.len() <= width * 2 / 3 {
return regular;
}
let short = self.ty_string_with_limit(ty, length_limit);
@ -265,7 +267,20 @@ impl<'tcx> TyCtxt<'tcx> {
*path = Some(path.take().unwrap_or_else(|| {
self.output_filenames(()).temp_path_ext(&format!("long-type-{hash}.txt"), None)
}));
match std::fs::write(path.as_ref().unwrap(), &format!("{regular}\n")) {
let Ok(mut file) =
File::options().create(true).read(true).append(true).open(&path.as_ref().unwrap())
else {
return regular;
};
// Do not write the same type to the file multiple times.
let mut contents = String::new();
let _ = file.read_to_string(&mut contents);
if let Some(_) = contents.lines().find(|line| line == &regular) {
return short;
}
match write!(file, "{regular}\n") {
Ok(_) => short,
Err(_) => regular,
}

61
compiler/rustc_trait_selection/src/error_reporting/infer/mod.rs
View File

@ -766,6 +766,67 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> {
values
}
pub fn cmp_traits(
&self,
def_id1: DefId,
args1: &[ty::GenericArg<'tcx>],
def_id2: DefId,
args2: &[ty::GenericArg<'tcx>],
) -> (DiagStyledString, DiagStyledString) {
let mut values = (DiagStyledString::new(), DiagStyledString::new());
if def_id1 != def_id2 {
values.0.push_highlighted(self.tcx.def_path_str(def_id1).as_str());
values.1.push_highlighted(self.tcx.def_path_str(def_id2).as_str());
} else {
values.0.push_normal(self.tcx.item_name(def_id1).as_str());
values.1.push_normal(self.tcx.item_name(def_id2).as_str());
}
if args1.len() != args2.len() {
let (pre, post) = if args1.len() > 0 { ("<", ">") } else { ("", "") };
values.0.push_normal(format!(
"{pre}{}{post}",
args1.iter().map(|a| a.to_string()).collect::<Vec<_>>().join(", ")
));
let (pre, post) = if args2.len() > 0 { ("<", ">") } else { ("", "") };
values.1.push_normal(format!(
"{pre}{}{post}",
args2.iter().map(|a| a.to_string()).collect::<Vec<_>>().join(", ")
));
return values;
}
if args1.len() > 0 {
values.0.push_normal("<");
values.1.push_normal("<");
}
for (i, (a, b)) in std::iter::zip(args1, args2).enumerate() {
let a_str = a.to_string();
let b_str = b.to_string();
if let (Some(a), Some(b)) = (a.as_type(), b.as_type()) {
let (a, b) = self.cmp(a, b);
values.0.0.extend(a.0);
values.1.0.extend(b.0);
} else if a_str != b_str {
values.0.push_highlighted(a_str);
values.1.push_highlighted(b_str);
} else {
values.0.push_normal(a_str);
values.1.push_normal(b_str);
}
if i + 1 < args1.len() {
values.0.push_normal(", ");
values.1.push_normal(", ");
}
}
if args1.len() > 0 {
values.0.push_normal(">");
values.1.push_normal(">");
}
values
}
/// Compares two given types, eliding parts that are the same between them and highlighting
/// relevant differences, and return two representation of those types for highlighted printing.
pub fn cmp(&self, t1: Ty<'tcx>, t2: Ty<'tcx>) -> (DiagStyledString, DiagStyledString) {

101
compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs
View File

@ -6,8 +6,8 @@ use rustc_data_structures::fx::FxHashMap;
use rustc_data_structures::unord::UnordSet;
use rustc_errors::codes::*;
use rustc_errors::{
Applicability, Diag, ErrorGuaranteed, MultiSpan, StashKey, StringPart, Suggestions, pluralize,
struct_span_code_err,
Applicability, Diag, ErrorGuaranteed, Level, MultiSpan, StashKey, StringPart, Suggestions,
pluralize, struct_span_code_err,
};
use rustc_hir::def::Namespace;
use rustc_hir::def_id::{DefId, LOCAL_CRATE, LocalDefId};
@ -328,6 +328,11 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> {
}
} else if let Some(custom_explanation) = safe_transmute_explanation {
err.span_label(span, custom_explanation);
} else if explanation.len() > self.tcx.sess.diagnostic_width() {
// Really long types don't look good as span labels, instead move it
// to a `help`.
err.span_label(span, "unsatisfied trait bound");
err.help(explanation);
} else {
err.span_label(span, explanation);
}
@ -1832,21 +1837,81 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> {
if impl_trait_ref.references_error() {
return false;
}
let self_ty = impl_trait_ref.self_ty().to_string();
err.highlighted_help(vec![
StringPart::normal(format!(
"the trait `{}` ",
impl_trait_ref.print_trait_sugared()
)),
StringPart::highlighted("is"),
if let [child, ..] = &err.children[..]
&& child.level == Level::Help
&& let Some(line) = child.messages.get(0)
&& let Some(line) = line.0.as_str()
&& line.starts_with("the trait")
&& line.contains("is not implemented for")
{
// HACK(estebank): we remove the pre-existing
// "the trait `X` is not implemented for" note, which only happens if there
// was a custom label. We do this because we want that note to always be the
// first, and making this logic run earlier will get tricky. For now, we
// instead keep the logic the same and modify the already constructed error
// to avoid the wording duplication.
err.children.remove(0);
}
let traits = self.cmp_traits(
obligation_trait_ref.def_id,
&obligation_trait_ref.args[1..],
impl_trait_ref.def_id,
&impl_trait_ref.args[1..],
);
let traits_content = (traits.0.content(), traits.1.content());
let types = self.cmp(obligation_trait_ref.self_ty(), impl_trait_ref.self_ty());
let types_content = (types.0.content(), types.1.content());
let mut msg = vec![StringPart::normal("the trait `")];
if traits_content.0 == traits_content.1 {
msg.push(StringPart::normal(
impl_trait_ref.print_trait_sugared().to_string(),
));
} else {
msg.extend(traits.0.0);
}
msg.extend([
StringPart::normal("` "),
StringPart::highlighted("is not"),
StringPart::normal(" implemented for `"),
if let [TypeError::Sorts(_)] = &terrs[..] {
StringPart::normal(self_ty)
} else {
StringPart::highlighted(self_ty)
},
StringPart::normal("`"),
]);
if types_content.0 == types_content.1 {
let ty =
self.tcx.short_ty_string(obligation_trait_ref.self_ty(), &mut None);
msg.push(StringPart::normal(ty));
} else {
msg.extend(types.0.0);
}
msg.push(StringPart::normal("`"));
if types_content.0 == types_content.1 {
msg.push(StringPart::normal("\nbut trait `"));
msg.extend(traits.1.0);
msg.extend([
StringPart::normal("` "),
StringPart::highlighted("is"),
StringPart::normal(" implemented for it"),
]);
} else if traits_content.0 == traits_content.1 {
msg.extend([
StringPart::normal("\nbut it "),
StringPart::highlighted("is"),
StringPart::normal(" implemented for `"),
]);
msg.extend(types.1.0);
msg.push(StringPart::normal("`"));
} else {
msg.push(StringPart::normal("\nbut trait `"));
msg.extend(traits.1.0);
msg.extend([
StringPart::normal("` "),
StringPart::highlighted("is"),
StringPart::normal(" implemented for `"),
]);
msg.extend(types.1.0);
msg.push(StringPart::normal("`"));
}
err.highlighted_help(msg);
if let [TypeError::Sorts(exp_found)] = &terrs[..] {
let exp_found = self.resolve_vars_if_possible(*exp_found);
@ -2475,12 +2540,16 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> {
&& self.tcx.trait_impls_of(trait_def_id).is_empty()
&& !self.tcx.trait_is_auto(trait_def_id)
&& !self.tcx.trait_is_alias(trait_def_id)
&& trait_predicate.polarity() == ty::PredicatePolarity::Positive
{
err.span_help(
self.tcx.def_span(trait_def_id),
crate::fluent_generated::trait_selection_trait_has_no_impls,
);
} else if !suggested && !unsatisfied_const {
} else if !suggested
&& !unsatisfied_const
&& trait_predicate.polarity() == ty::PredicatePolarity::Positive
{
// Can't show anything else useful, try to find similar impls.
let impl_candidates = self.find_similar_impl_candidates(trait_predicate);
if !self.report_similar_impl_candidates(

42
compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs
View File

@ -3563,17 +3563,34 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> {
)]);
}
ObligationCauseCode::OpaqueReturnType(expr_info) => {
if let Some((expr_ty, hir_id)) = expr_info {
let expr_ty = self.tcx.short_ty_string(expr_ty, long_ty_file);
let expr = self.infcx.tcx.hir().expect_expr(hir_id);
err.span_label(
expr.span,
with_forced_trimmed_paths!(format!(
"return type was inferred to be `{expr_ty}` here",
)),
);
suggest_remove_deref(err, &expr);
}
let (expr_ty, expr) = if let Some((expr_ty, hir_id)) = expr_info {
let expr_ty = tcx.short_ty_string(expr_ty, long_ty_file);
let expr = tcx.hir().expect_expr(hir_id);
(expr_ty, expr)
} else if let Some(body_id) = tcx.hir_node_by_def_id(body_id).body_id()
&& let body = tcx.hir().body(body_id)
&& let hir::ExprKind::Block(block, _) = body.value.kind
&& let Some(expr) = block.expr
&& let Some(expr_ty) = self
.typeck_results
.as_ref()
.and_then(|typeck| typeck.node_type_opt(expr.hir_id))
&& let Some(pred) = predicate.as_clause()
&& let ty::ClauseKind::Trait(pred) = pred.kind().skip_binder()
&& self.can_eq(param_env, pred.self_ty(), expr_ty)
{
let expr_ty = tcx.short_ty_string(expr_ty, long_ty_file);
(expr_ty, expr)
} else {
return;
};
err.span_label(
expr.span,
with_forced_trimmed_paths!(format!(
"return type was inferred to be `{expr_ty}` here",
)),
);
suggest_remove_deref(err, &expr);
}
}
}
@ -3680,6 +3697,9 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> {
err: &mut Diag<'_>,
trait_pred: ty::PolyTraitPredicate<'tcx>,
) {
if trait_pred.polarity() == ty::PredicatePolarity::Negative {
return;
}
let Some(diagnostic_name) = self.tcx.get_diagnostic_name(trait_pred.def_id()) else {
return;
};

3
tests/ui/async-await/async-closures/not-clone-closure.stderr
View File

@ -2,8 +2,9 @@ error[E0277]: the trait bound `NotClonableUpvar: Clone` is not satisfied in `{as
--> $DIR/not-clone-closure.rs:32:15
|
LL | not_clone.clone();
| ^^^^^ within `{async closure@$DIR/not-clone-closure.rs:29:21: 29:34}`, the trait `Clone` is not implemented for `NotClonableUpvar`
| ^^^^^ unsatisfied trait bound
|
= help: within `{async closure@$DIR/not-clone-closure.rs:29:21: 29:34}`, the trait `Clone` is not implemented for `NotClonableUpvar`
note: required because it's used within this closure
--> $DIR/not-clone-closure.rs:29:21
|

3
tests/ui/async-await/async-error-span.stderr
View File

@ -3,6 +3,9 @@ error[E0277]: `()` is not a future
|
LL | fn get_future() -> impl Future<Output = ()> {
| ^^^^^^^^^^^^^^^^^^^^^^^^ `()` is not a future
LL |
LL | panic!()
| -------- return type was inferred to be `_` here
|
= help: the trait `Future` is not implemented for `()`

1
tests/ui/async-await/coroutine-not-future.rs
View File

@ -1,4 +1,5 @@
//@ edition:2018
//@compile-flags: --diagnostic-width=300
#![feature(coroutines, coroutine_trait, stmt_expr_attributes)]
use std::future::Future;

30
tests/ui/async-await/coroutine-not-future.stderr
View File

@ -1,5 +1,5 @@
error[E0277]: the trait bound `impl Future<Output = ()>: Coroutine<_>` is not satisfied
--> $DIR/coroutine-not-future.rs:35:21
--> $DIR/coroutine-not-future.rs:36:21
|
LL | takes_coroutine(async_fn());
| --------------- ^^^^^^^^^^ the trait `Coroutine<_>` is not implemented for `impl Future<Output = ()>`
@ -7,13 +7,13 @@ LL | takes_coroutine(async_fn());
| required by a bound introduced by this call
|
note: required by a bound in `takes_coroutine`
--> $DIR/coroutine-not-future.rs:19:39
--> $DIR/coroutine-not-future.rs:20:39
|
LL | fn takes_coroutine<ResumeTy>(_g: impl Coroutine<ResumeTy, Yield = (), Return = ()>) {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `takes_coroutine`
error[E0277]: the trait bound `impl Future<Output = ()>: Coroutine<_>` is not satisfied
--> $DIR/coroutine-not-future.rs:37:21
--> $DIR/coroutine-not-future.rs:38:21
|
LL | takes_coroutine(returns_async_block());
| --------------- ^^^^^^^^^^^^^^^^^^^^^ the trait `Coroutine<_>` is not implemented for `impl Future<Output = ()>`
@ -21,27 +21,27 @@ LL | takes_coroutine(returns_async_block());
| required by a bound introduced by this call
|
note: required by a bound in `takes_coroutine`
--> $DIR/coroutine-not-future.rs:19:39
--> $DIR/coroutine-not-future.rs:20:39
|
LL | fn takes_coroutine<ResumeTy>(_g: impl Coroutine<ResumeTy, Yield = (), Return = ()>) {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `takes_coroutine`
error[E0277]: the trait bound `{async block@$DIR/coroutine-not-future.rs:39:21: 39:26}: Coroutine<_>` is not satisfied
--> $DIR/coroutine-not-future.rs:39:21
error[E0277]: the trait bound `{async block@$DIR/coroutine-not-future.rs:40:21: 40:26}: Coroutine<_>` is not satisfied
--> $DIR/coroutine-not-future.rs:40:21
|
LL | takes_coroutine(async {});
| --------------- ^^^^^^^^ the trait `Coroutine<_>` is not implemented for `{async block@$DIR/coroutine-not-future.rs:39:21: 39:26}`
| --------------- ^^^^^^^^ the trait `Coroutine<_>` is not implemented for `{async block@$DIR/coroutine-not-future.rs:40:21: 40:26}`
| |
| required by a bound introduced by this call
|
note: required by a bound in `takes_coroutine`
--> $DIR/coroutine-not-future.rs:19:39
--> $DIR/coroutine-not-future.rs:20:39
|
LL | fn takes_coroutine<ResumeTy>(_g: impl Coroutine<ResumeTy, Yield = (), Return = ()>) {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `takes_coroutine`
error[E0277]: `impl Coroutine<Yield = (), Return = ()>` is not a future
--> $DIR/coroutine-not-future.rs:43:18
--> $DIR/coroutine-not-future.rs:44:18
|
LL | takes_future(returns_coroutine());
| ------------ ^^^^^^^^^^^^^^^^^^^ `impl Coroutine<Yield = (), Return = ()>` is not a future
@ -50,13 +50,13 @@ LL | takes_future(returns_coroutine());
|
= help: the trait `Future` is not implemented for `impl Coroutine<Yield = (), Return = ()>`
note: required by a bound in `takes_future`
--> $DIR/coroutine-not-future.rs:18:26
--> $DIR/coroutine-not-future.rs:19:26
|
LL | fn takes_future(_f: impl Future<Output = ()>) {}
| ^^^^^^^^^^^^^^^^^^^ required by this bound in `takes_future`
error[E0277]: `{coroutine@$DIR/coroutine-not-future.rs:47:9: 47:14}` is not a future
--> $DIR/coroutine-not-future.rs:47:9
error[E0277]: `{coroutine@$DIR/coroutine-not-future.rs:48:9: 48:14}` is not a future
--> $DIR/coroutine-not-future.rs:48:9
|
LL | takes_future(
| ------------ required by a bound introduced by this call
@ -65,11 +65,11 @@ LL | / |ctx| {
LL | |
LL | | ctx = yield ();
LL | | },
| |_________^ `{coroutine@$DIR/coroutine-not-future.rs:47:9: 47:14}` is not a future
| |_________^ `{coroutine@$DIR/coroutine-not-future.rs:48:9: 48:14}` is not a future
|
= help: the trait `Future` is not implemented for `{coroutine@$DIR/coroutine-not-future.rs:47:9: 47:14}`
= help: the trait `Future` is not implemented for `{coroutine@$DIR/coroutine-not-future.rs:48:9: 48:14}`
note: required by a bound in `takes_future`
--> $DIR/coroutine-not-future.rs:18:26
--> $DIR/coroutine-not-future.rs:19:26
|
LL | fn takes_future(_f: impl Future<Output = ()>) {}
| ^^^^^^^^^^^^^^^^^^^ required by this bound in `takes_future`

3
tests/ui/const-generics/adt_const_params/const_param_ty_bad.stderr
View File

@ -20,10 +20,11 @@ error[E0277]: `{closure@$DIR/const_param_ty_bad.rs:8:11: 8:13}` can't be used as
--> $DIR/const_param_ty_bad.rs:8:11
|
LL | check(|| {});
| ----- ^^^^^ the trait `UnsizedConstParamTy` is not implemented for closure `{closure@$DIR/const_param_ty_bad.rs:8:11: 8:13}`
| ----- ^^^^^ unsatisfied trait bound
| |
| required by a bound introduced by this call
|
= help: the trait `UnsizedConstParamTy` is not implemented for closure `{closure@$DIR/const_param_ty_bad.rs:8:11: 8:13}`
note: required by a bound in `check`
--> $DIR/const_param_ty_bad.rs:4:18
|

3
tests/ui/const-generics/associated-type-bound-fail.stderr
View File

@ -4,7 +4,8 @@ error[E0277]: the trait bound `u16: Bar<N>` is not satisfied
LL | type Assoc = u16;
| ^^^ the trait `Bar<N>` is not implemented for `u16`
|
= help: the trait `Bar<3>` is implemented for `u16`
= help: the trait `Bar<N>` is not implemented for `u16`
but trait `Bar<3>` is implemented for it
note: required by a bound in `Foo::Assoc`
--> $DIR/associated-type-bound-fail.rs:4:17
|

6
tests/ui/const-generics/defaults/rp_impl_trait_fail.stderr
View File

@ -18,7 +18,8 @@ LL |
LL | 1_u32
| ----- return type was inferred to be `u32` here
|
= help: the trait `Traitor<N, 2>` is implemented for `u32`
= help: the trait `Traitor<N, N>` is not implemented for `u32`
but trait `Traitor<N, 2>` is implemented for it
error[E0277]: the trait bound `u64: Traitor` is not satisfied
--> $DIR/rp_impl_trait_fail.rs:21:13
@ -29,7 +30,8 @@ LL |
LL | 1_u64
| ----- return type was inferred to be `u64` here
|
= help: the trait `Traitor<1, 2>` is implemented for `u64`
= help: the trait `Traitor<1, 1>` is not implemented for `u64`
but trait `Traitor<1, 2>` is implemented for it
error[E0284]: type annotations needed
--> $DIR/rp_impl_trait_fail.rs:28:5

6
tests/ui/const-generics/defaults/trait_objects_fail.stderr
View File

@ -4,7 +4,8 @@ error[E0277]: the trait bound `u32: Trait` is not satisfied
LL | foo(&10_u32);
| ^^^^^^^ the trait `Trait` is not implemented for `u32`
|
= help: the trait `Trait<2>` is implemented for `u32`
= help: the trait `Trait<12>` is not implemented for `u32`
but trait `Trait<2>` is implemented for it
= note: required for the cast from `&u32` to `&dyn Trait`
error[E0277]: the trait bound `bool: Traitor<_>` is not satisfied
@ -13,7 +14,8 @@ error[E0277]: the trait bound `bool: Traitor<_>` is not satisfied
LL | bar(&true);
| ^^^^^ the trait `Traitor<_>` is not implemented for `bool`
|
= help: the trait `Traitor<2, 3>` is implemented for `bool`
= help: the trait `Traitor<_, _>` is not implemented for `bool`
but trait `Traitor<2, 3>` is implemented for it
= note: required for the cast from `&bool` to `&dyn Traitor<_>`
error: aborting due to 2 previous errors

6
tests/ui/const-generics/defaults/wfness.stderr
View File

@ -10,7 +10,8 @@ error[E0277]: the trait bound `(): Trait<2>` is not satisfied
LL | (): Trait<N>;
| ^^^^^^^^ the trait `Trait<2>` is not implemented for `()`
|
= help: the trait `Trait<3>` is implemented for `()`
= help: the trait `Trait<2>` is not implemented for `()`
but trait `Trait<3>` is implemented for it
error[E0277]: the trait bound `(): Trait<1>` is not satisfied
--> $DIR/wfness.rs:18:13
@ -18,7 +19,8 @@ error[E0277]: the trait bound `(): Trait<1>` is not satisfied
LL | fn foo() -> DependentDefaultWfness {
| ^^^^^^^^^^^^^^^^^^^^^^ the trait `Trait<1>` is not implemented for `()`
|
= help: the trait `Trait<3>` is implemented for `()`
= help: the trait `Trait<1>` is not implemented for `()`
but trait `Trait<3>` is implemented for it
note: required by a bound in `WhereClause`
--> $DIR/wfness.rs:8:9
|

3
tests/ui/const-generics/occurs-check/unused-substs-1.stderr
View File

@ -4,7 +4,8 @@ error[E0277]: the trait bound `A<_>: Bar<_>` is not satisfied
LL | let _ = A;
| ^ the trait `Bar<_>` is not implemented for `A<_>`
|
= help: the trait `Bar<_>` is implemented for `A<{ 6 + 1 }>`
= help: the trait `Bar<_>` is not implemented for `A<_>`
but it is implemented for `A<{ 6 + 1 }>`
note: required by a bound in `A`
--> $DIR/unused-substs-1.rs:9:11
|

5
tests/ui/coroutine/arg-count-mismatch-on-unit-input.stderr
View File

@ -5,7 +5,10 @@ LL | fn foo() -> impl Coroutine<u8> {
| ^^^^^^^^^^^^^^^^^^ expected due to this
...
LL | |_: ()| {}
| ------- found signature defined here
| ----------
| |
| found signature defined here
| return type was inferred to be `{coroutine@$DIR/arg-count-mismatch-on-unit-input.rs:8:5: 8:12}` here
|
= note: expected coroutine signature `fn(u8) -> _`
found coroutine signature `fn(()) -> _`

1
tests/ui/coroutine/clone-impl.rs
View File

@ -1,6 +1,7 @@
// gate-test-coroutine_clone
// Verifies that non-static coroutines can be cloned/copied if all their upvars and locals held
// across awaits can be cloned/copied.
//@compile-flags: --diagnostic-width=300
#![feature(coroutines, coroutine_clone, stmt_expr_attributes)]

72
tests/ui/coroutine/clone-impl.stderr
View File

@ -1,76 +1,76 @@
error[E0277]: the trait bound `Vec<u32>: Copy` is not satisfied in `{coroutine@$DIR/clone-impl.rs:43:5: 43:12}`
--> $DIR/clone-impl.rs:49:5
error[E0277]: the trait bound `Vec<u32>: Copy` is not satisfied in `{coroutine@$DIR/clone-impl.rs:44:5: 44:12}`
--> $DIR/clone-impl.rs:50:5
|
LL | move || {
| ------- within this `{coroutine@$DIR/clone-impl.rs:43:5: 43:12}`
| ------- within this `{coroutine@$DIR/clone-impl.rs:44:5: 44:12}`
...
LL | check_copy(&gen_clone_0);
| ^^^^^^^^^^^^^^^^^^^^^^^^ within `{coroutine@$DIR/clone-impl.rs:43:5: 43:12}`, the trait `Copy` is not implemented for `Vec<u32>`
| ^^^^^^^^^^^^^^^^^^^^^^^^ within `{coroutine@$DIR/clone-impl.rs:44:5: 44:12}`, the trait `Copy` is not implemented for `Vec<u32>`
|
note: captured value does not implement `Copy`
--> $DIR/clone-impl.rs:47:14
--> $DIR/clone-impl.rs:48:14
|
LL | drop(clonable_0);
| ^^^^^^^^^^ has type `Vec<u32>` which does not implement `Copy`
note: required by a bound in `check_copy`
--> $DIR/clone-impl.rs:89:18
--> $DIR/clone-impl.rs:90:18
|
LL | fn check_copy<T: Copy>(_x: &T) {}
| ^^^^ required by this bound in `check_copy`
error[E0277]: the trait bound `Vec<char>: Copy` is not satisfied in `{coroutine@$DIR/clone-impl.rs:43:5: 43:12}`
--> $DIR/clone-impl.rs:49:5
error[E0277]: the trait bound `Vec<char>: Copy` is not satisfied in `{coroutine@$DIR/clone-impl.rs:44:5: 44:12}`
--> $DIR/clone-impl.rs:50:5
|
LL | move || {
| ------- within this `{coroutine@$DIR/clone-impl.rs:43:5: 43:12}`
| ------- within this `{coroutine@$DIR/clone-impl.rs:44:5: 44:12}`
...
LL | check_copy(&gen_clone_0);
| ^^^^^^^^^^^^^^^^^^^^^^^^ within `{coroutine@$DIR/clone-impl.rs:43:5: 43:12}`, the trait `Copy` is not implemented for `Vec<char>`
| ^^^^^^^^^^^^^^^^^^^^^^^^ within `{coroutine@$DIR/clone-impl.rs:44:5: 44:12}`, the trait `Copy` is not implemented for `Vec<char>`
|
note: coroutine does not implement `Copy` as this value is used across a yield
--> $DIR/clone-impl.rs:45:9
--> $DIR/clone-impl.rs:46:9
|
LL | let v = vec!['a'];
| - has type `Vec<char>` which does not implement `Copy`
LL | yield;
| ^^^^^ yield occurs here, with `v` maybe used later
note: required by a bound in `check_copy`
--> $DIR/clone-impl.rs:89:18
--> $DIR/clone-impl.rs:90:18
|
LL | fn check_copy<T: Copy>(_x: &T) {}
| ^^^^ required by this bound in `check_copy`
error[E0277]: the trait bound `Vec<u32>: Copy` is not satisfied in `{coroutine@$DIR/clone-impl.rs:58:5: 58:12}`
--> $DIR/clone-impl.rs:70:5
error[E0277]: the trait bound `Vec<u32>: Copy` is not satisfied in `{coroutine@$DIR/clone-impl.rs:59:5: 59:12}`
--> $DIR/clone-impl.rs:71:5
|
LL | move || {
| ------- within this `{coroutine@$DIR/clone-impl.rs:58:5: 58:12}`
| ------- within this `{coroutine@$DIR/clone-impl.rs:59:5: 59:12}`
...
LL | check_copy(&gen_clone_1);
| ^^^^^^^^^^^^^^^^^^^^^^^^ within `{coroutine@$DIR/clone-impl.rs:58:5: 58:12}`, the trait `Copy` is not implemented for `Vec<u32>`
| ^^^^^^^^^^^^^^^^^^^^^^^^ within `{coroutine@$DIR/clone-impl.rs:59:5: 59:12}`, the trait `Copy` is not implemented for `Vec<u32>`
|
note: captured value does not implement `Copy`
--> $DIR/clone-impl.rs:68:14
--> $DIR/clone-impl.rs:69:14
|
LL | drop(clonable_1);
| ^^^^^^^^^^ has type `Vec<u32>` which does not implement `Copy`
note: required by a bound in `check_copy`
--> $DIR/clone-impl.rs:89:18
--> $DIR/clone-impl.rs:90:18
|
LL | fn check_copy<T: Copy>(_x: &T) {}
| ^^^^ required by this bound in `check_copy`
error[E0277]: the trait bound `Vec<char>: Copy` is not satisfied in `{coroutine@$DIR/clone-impl.rs:58:5: 58:12}`
--> $DIR/clone-impl.rs:70:5
error[E0277]: the trait bound `Vec<char>: Copy` is not satisfied in `{coroutine@$DIR/clone-impl.rs:59:5: 59:12}`
--> $DIR/clone-impl.rs:71:5
|
LL | move || {
| ------- within this `{coroutine@$DIR/clone-impl.rs:58:5: 58:12}`
| ------- within this `{coroutine@$DIR/clone-impl.rs:59:5: 59:12}`
...
LL | check_copy(&gen_clone_1);
| ^^^^^^^^^^^^^^^^^^^^^^^^ within `{coroutine@$DIR/clone-impl.rs:58:5: 58:12}`, the trait `Copy` is not implemented for `Vec<char>`
| ^^^^^^^^^^^^^^^^^^^^^^^^ within `{coroutine@$DIR/clone-impl.rs:59:5: 59:12}`, the trait `Copy` is not implemented for `Vec<char>`
|
note: coroutine does not implement `Copy` as this value is used across a yield
--> $DIR/clone-impl.rs:64:9
--> $DIR/clone-impl.rs:65:9
|
LL | let v = vec!['a'];
| - has type `Vec<char>` which does not implement `Copy`
@ -78,27 +78,27 @@ LL | let v = vec!['a'];
LL | yield;
| ^^^^^ yield occurs here, with `v` maybe used later
note: required by a bound in `check_copy`
--> $DIR/clone-impl.rs:89:18
--> $DIR/clone-impl.rs:90:18
|
LL | fn check_copy<T: Copy>(_x: &T) {}
| ^^^^ required by this bound in `check_copy`
error[E0277]: the trait bound `NonClone: Copy` is not satisfied in `{coroutine@$DIR/clone-impl.rs:79:5: 79:12}`
--> $DIR/clone-impl.rs:83:5
error[E0277]: the trait bound `NonClone: Copy` is not satisfied in `{coroutine@$DIR/clone-impl.rs:80:5: 80:12}`
--> $DIR/clone-impl.rs:84:5
|
LL | move || {
| ------- within this `{coroutine@$DIR/clone-impl.rs:79:5: 79:12}`
| ------- within this `{coroutine@$DIR/clone-impl.rs:80:5: 80:12}`
...
LL | check_copy(&gen_non_clone);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ within `{coroutine@$DIR/clone-impl.rs:79:5: 79:12}`, the trait `Copy` is not implemented for `NonClone`
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ within `{coroutine@$DIR/clone-impl.rs:80:5: 80:12}`, the trait `Copy` is not implemented for `NonClone`
|
note: captured value does not implement `Copy`
--> $DIR/clone-impl.rs:81:14
--> $DIR/clone-impl.rs:82:14
|
LL | drop(non_clonable);
| ^^^^^^^^^^^^ has type `NonClone` which does not implement `Copy`
note: required by a bound in `check_copy`
--> $DIR/clone-impl.rs:89:18
--> $DIR/clone-impl.rs:90:18
|
LL | fn check_copy<T: Copy>(_x: &T) {}
| ^^^^ required by this bound in `check_copy`
@ -108,22 +108,22 @@ LL + #[derive(Copy)]
LL | struct NonClone;
|
error[E0277]: the trait bound `NonClone: Clone` is not satisfied in `{coroutine@$DIR/clone-impl.rs:79:5: 79:12}`
--> $DIR/clone-impl.rs:85:5
error[E0277]: the trait bound `NonClone: Clone` is not satisfied in `{coroutine@$DIR/clone-impl.rs:80:5: 80:12}`
--> $DIR/clone-impl.rs:86:5
|
LL | move || {
| ------- within this `{coroutine@$DIR/clone-impl.rs:79:5: 79:12}`
| ------- within this `{coroutine@$DIR/clone-impl.rs:80:5: 80:12}`
...
LL | check_clone(&gen_non_clone);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `{coroutine@$DIR/clone-impl.rs:79:5: 79:12}`, the trait `Clone` is not implemented for `NonClone`
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `{coroutine@$DIR/clone-impl.rs:80:5: 80:12}`, the trait `Clone` is not implemented for `NonClone`
|
note: captured value does not implement `Clone`
--> $DIR/clone-impl.rs:81:14
--> $DIR/clone-impl.rs:82:14
|
LL | drop(non_clonable);
| ^^^^^^^^^^^^ has type `NonClone` which does not implement `Clone`
note: required by a bound in `check_clone`
--> $DIR/clone-impl.rs:90:19
--> $DIR/clone-impl.rs:91:19
|
LL | fn check_clone<T: Clone>(_x: &T) {}
| ^^^^^ required by this bound in `check_clone`

6
tests/ui/coroutine/gen_block_is_coro.stderr
View File

@ -3,18 +3,24 @@ error[E0277]: the trait bound `{gen block@$DIR/gen_block_is_coro.rs:7:5: 7:8}: C
|
LL | fn foo() -> impl Coroutine<Yield = u32, Return = ()> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Coroutine` is not implemented for `{gen block@$DIR/gen_block_is_coro.rs:7:5: 7:8}`
LL | gen { yield 42 }
| ---------------- return type was inferred to be `{gen block@$DIR/gen_block_is_coro.rs:7:5: 7:8}` here
error[E0277]: the trait bound `{gen block@$DIR/gen_block_is_coro.rs:11:5: 11:8}: Coroutine` is not satisfied
--> $DIR/gen_block_is_coro.rs:10:13
|
LL | fn bar() -> impl Coroutine<Yield = i64, Return = ()> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Coroutine` is not implemented for `{gen block@$DIR/gen_block_is_coro.rs:11:5: 11:8}`
LL | gen { yield 42 }
| ---------------- return type was inferred to be `{gen block@$DIR/gen_block_is_coro.rs:11:5: 11:8}` here
error[E0277]: the trait bound `{gen block@$DIR/gen_block_is_coro.rs:15:5: 15:8}: Coroutine` is not satisfied
--> $DIR/gen_block_is_coro.rs:14:13
|
LL | fn baz() -> impl Coroutine<Yield = i32, Return = ()> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Coroutine` is not implemented for `{gen block@$DIR/gen_block_is_coro.rs:15:5: 15:8}`
LL | gen { yield 42 }
| ---------------- return type was inferred to be `{gen block@$DIR/gen_block_is_coro.rs:15:5: 15:8}` here
error: aborting due to 3 previous errors

2
tests/ui/coroutine/gen_block_is_no_future.stderr
View File

@ -3,6 +3,8 @@ error[E0277]: `{gen block@$DIR/gen_block_is_no_future.rs:5:5: 5:8}` is not a fut
|
LL | fn foo() -> impl std::future::Future {
| ^^^^^^^^^^^^^^^^^^^^^^^^ `{gen block@$DIR/gen_block_is_no_future.rs:5:5: 5:8}` is not a future
LL | gen { yield 42 }
| ---------------- return type was inferred to be `{gen block@$DIR/gen_block_is_no_future.rs:5:5: 5:8}` here
|
= help: the trait `Future` is not implemented for `{gen block@$DIR/gen_block_is_no_future.rs:5:5: 5:8}`

1
tests/ui/coroutine/issue-105084.rs
View File

@ -1,3 +1,4 @@
//@compile-flags: --diagnostic-width=300
#![feature(coroutines)]
#![feature(coroutine_clone)]
#![feature(coroutine_trait)]

18
tests/ui/coroutine/issue-105084.stderr
View File

@ -1,8 +1,8 @@
error[E0382]: borrow of moved value: `g`
--> $DIR/issue-105084.rs:38:14
--> $DIR/issue-105084.rs:39:14
|
LL | let mut g = #[coroutine]
| ----- move occurs because `g` has type `{coroutine@$DIR/issue-105084.rs:15:5: 15:7}`, which does not implement the `Copy` trait
| ----- move occurs because `g` has type `{coroutine@$DIR/issue-105084.rs:16:5: 16:7}`, which does not implement the `Copy` trait
...
LL | let mut h = copy(g);
| - value moved here
@ -11,7 +11,7 @@ LL | Pin::new(&mut g).resume(());
| ^^^^^^ value borrowed here after move
|
note: consider changing this parameter type in function `copy` to borrow instead if owning the value isn't necessary
--> $DIR/issue-105084.rs:9:21
--> $DIR/issue-105084.rs:10:21
|
LL | fn copy<T: Copy>(x: T) -> T {
| ---- ^ this parameter takes ownership of the value
@ -22,17 +22,17 @@ help: consider cloning the value if the performance cost is acceptable
LL | let mut h = copy(g.clone());
| ++++++++
error[E0277]: the trait bound `Box<(i32, ())>: Copy` is not satisfied in `{coroutine@$DIR/issue-105084.rs:15:5: 15:7}`
--> $DIR/issue-105084.rs:32:17
error[E0277]: the trait bound `Box<(i32, ())>: Copy` is not satisfied in `{coroutine@$DIR/issue-105084.rs:16:5: 16:7}`
--> $DIR/issue-105084.rs:33:17
|
LL | || {
| -- within this `{coroutine@$DIR/issue-105084.rs:15:5: 15:7}`
| -- within this `{coroutine@$DIR/issue-105084.rs:16:5: 16:7}`
...
LL | let mut h = copy(g);
| ^^^^^^^ within `{coroutine@$DIR/issue-105084.rs:15:5: 15:7}`, the trait `Copy` is not implemented for `Box<(i32, ())>`
| ^^^^^^^ within `{coroutine@$DIR/issue-105084.rs:16:5: 16:7}`, the trait `Copy` is not implemented for `Box<(i32, ())>`
|
note: coroutine does not implement `Copy` as this value is used across a yield
--> $DIR/issue-105084.rs:22:22
--> $DIR/issue-105084.rs:23:22
|
LL | Box::new((5, yield));
| -------------^^^^^--
@ -40,7 +40,7 @@ LL | Box::new((5, yield));
| | yield occurs here, with `Box::new((5, yield))` maybe used later
| has type `Box<(i32, ())>` which does not implement `Copy`
note: required by a bound in `copy`
--> $DIR/issue-105084.rs:9:12
--> $DIR/issue-105084.rs:10:12
|
LL | fn copy<T: Copy>(x: T) -> T {
| ^^^^ required by this bound in `copy`

1
tests/ui/coroutine/issue-88653.rs
View File

@ -14,6 +14,7 @@ fn foo(bar: bool) -> impl Coroutine<(bool,)> {
#[coroutine]
|bar| {
//~^ NOTE: found signature defined here
//~| NOTE: return type was inferred to be
if bar {
yield bar;
}

18
tests/ui/coroutine/issue-88653.stderr
View File

@ -1,11 +1,21 @@
error[E0631]: type mismatch in coroutine arguments
--> $DIR/issue-88653.rs:8:22
|
LL | fn foo(bar: bool) -> impl Coroutine<(bool,)> {
| ^^^^^^^^^^^^^^^^^^^^^^^ expected due to this
LL | fn foo(bar: bool) -> impl Coroutine<(bool,)> {
| ^^^^^^^^^^^^^^^^^^^^^^^ expected due to this
...
LL | |bar| {
| ----- found signature defined here
LL | |bar| {
| -----
| |
| _____found signature defined here
| |
LL | |
LL | |
LL | | if bar {
LL | | yield bar;
LL | | }
LL | | }
| |_____- return type was inferred to be `{coroutine@$DIR/issue-88653.rs:15:5: 15:10}` here
|
= note: expected coroutine signature `fn((bool,)) -> _`
found coroutine signature `fn(bool) -> _`

8
tests/ui/coroutine/static-not-unpin.current.stderr
View File

@ -1,15 +1,15 @@
error[E0277]: `{static coroutine@$DIR/static-not-unpin.rs:15:5: 15:14}` cannot be unpinned
--> $DIR/static-not-unpin.rs:18:18
error[E0277]: `{static coroutine@$DIR/static-not-unpin.rs:16:5: 16:14}` cannot be unpinned
--> $DIR/static-not-unpin.rs:19:18
|
LL | assert_unpin(coroutine);
| ------------ ^^^^^^^^^ the trait `Unpin` is not implemented for `{static coroutine@$DIR/static-not-unpin.rs:15:5: 15:14}`
| ------------ ^^^^^^^^^ the trait `Unpin` is not implemented for `{static coroutine@$DIR/static-not-unpin.rs:16:5: 16:14}`
| |
| required by a bound introduced by this call
|
= note: consider using the `pin!` macro
consider using `Box::pin` if you need to access the pinned value outside of the current scope
note: required by a bound in `assert_unpin`
--> $DIR/static-not-unpin.rs:11:20
--> $DIR/static-not-unpin.rs:12:20
|
LL | fn assert_unpin<T: Unpin>(_: T) {}
| ^^^^^ required by this bound in `assert_unpin`

8
tests/ui/coroutine/static-not-unpin.next.stderr
View File

@ -1,15 +1,15 @@
error[E0277]: `{static coroutine@$DIR/static-not-unpin.rs:15:5: 15:14}` cannot be unpinned
--> $DIR/static-not-unpin.rs:18:18
error[E0277]: `{static coroutine@$DIR/static-not-unpin.rs:16:5: 16:14}` cannot be unpinned
--> $DIR/static-not-unpin.rs:19:18
|
LL | assert_unpin(coroutine);
| ------------ ^^^^^^^^^ the trait `Unpin` is not implemented for `{static coroutine@$DIR/static-not-unpin.rs:15:5: 15:14}`
| ------------ ^^^^^^^^^ the trait `Unpin` is not implemented for `{static coroutine@$DIR/static-not-unpin.rs:16:5: 16:14}`
| |
| required by a bound introduced by this call
|
= note: consider using the `pin!` macro
consider using `Box::pin` if you need to access the pinned value outside of the current scope
note: required by a bound in `assert_unpin`
--> $DIR/static-not-unpin.rs:11:20
--> $DIR/static-not-unpin.rs:12:20
|
LL | fn assert_unpin<T: Unpin>(_: T) {}
| ^^^^^ required by this bound in `assert_unpin`

3
tests/ui/coroutine/static-not-unpin.rs
View File

@ -1,6 +1,7 @@
//@ revisions: current next
//@ ignore-compare-mode-next-solver (explicit revisions)
//@[next] compile-flags: -Znext-solver
//@[next] compile-flags: -Znext-solver --diagnostic-width=300
//@[current] compile-flags: --diagnostic-width=300
#![feature(coroutines, stmt_expr_attributes)]

3
tests/ui/diagnostic_namespace/do_not_recommend/as_expression.current.stderr
View File

@ -4,7 +4,8 @@ error[E0277]: the trait bound `&str: AsExpression<Integer>` is not satisfied
LL | SelectInt.check("bar");
| ^^^^^ the trait `AsExpression<Integer>` is not implemented for `&str`
|
= help: the trait `AsExpression<Text>` is implemented for `&str`
= help: the trait `AsExpression<Integer>` is not implemented for `&str`
but trait `AsExpression<Text>` is implemented for it
= help: for that trait implementation, expected `Text`, found `Integer`
error: aborting due to 1 previous error

3
tests/ui/diagnostic_namespace/do_not_recommend/as_expression.next.stderr
View File

@ -22,7 +22,8 @@ error[E0277]: the trait bound `&str: AsExpression<Integer>` is not satisfied
LL | SelectInt.check("bar");
| ^^^^^ the trait `AsExpression<Integer>` is not implemented for `&str`
|
= help: the trait `AsExpression<Text>` is implemented for `&str`
= help: the trait `AsExpression<Integer>` is not implemented for `&str`
but trait `AsExpression<Text>` is implemented for it
= help: for that trait implementation, expected `Text`, found `Integer`
error[E0271]: type mismatch resolving `<SelectInt as Expression>::SqlType == Text`

6
tests/ui/generic-const-items/unsatisfied-bounds.stderr
View File

@ -16,7 +16,8 @@ error[E0277]: the trait bound `Infallible: From<()>` is not satisfied
LL | let () = K::<()>;
| ^^ the trait `From<()>` is not implemented for `Infallible`
|
= help: the trait `From<!>` is implemented for `Infallible`
= help: the trait `From<()>` is not implemented for `Infallible`
but trait `From<!>` is implemented for it
= help: for that trait implementation, expected `!`, found `()`
note: required by a bound in `K`
--> $DIR/unsatisfied-bounds.rs:12:17
@ -48,7 +49,8 @@ error[E0277]: the trait bound `Infallible: From<()>` is not satisfied
LL | let _ = <() as Trait<&'static str>>::B::<()>;
| ^^ the trait `From<()>` is not implemented for `Infallible`
|
= help: the trait `From<!>` is implemented for `Infallible`
= help: the trait `From<()>` is not implemented for `Infallible`
but trait `From<!>` is implemented for it
= help: for that trait implementation, expected `!`, found `()`
note: required by a bound in `Trait::B`
--> $DIR/unsatisfied-bounds.rs:21:21

34
tests/ui/impl-trait/diagnostics/highlight-difference-between-expected-trait-and-found-trait.svg
View File

@ -1,4 +1,4 @@
<svg width="1104px" height="344px" xmlns="http://www.w3.org/2000/svg">
<svg width="1104px" height="398px" xmlns="http://www.w3.org/2000/svg">
<style>
.fg { fill: #AAAAAA }
.bg { background: #000000 }
@ -31,31 +31,37 @@
</tspan>
<tspan x="10px" y="100px"><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">^^^^^^^^^^^^^</tspan><tspan> </tspan><tspan class="fg-ansi256-009 bold">the trait `Bar&lt;i32&gt;` is not implemented for `Struct`</tspan>
</tspan>
<tspan x="10px" y="118px"><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
<tspan x="10px" y="118px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> Struct</tspan>
</tspan>
<tspan x="10px" y="136px"><tspan> </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: the trait `Bar&lt;()&gt;` </tspan><tspan class="fg-magenta bold">is</tspan><tspan> implemented for `Struct`</tspan>
<tspan x="10px" y="136px"><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">------</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">return type was inferred to be `Struct` here</tspan>
</tspan>
<tspan x="10px" y="154px"><tspan> </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: for that trait implementation, expected `</tspan><tspan class="fg-magenta bold">()</tspan><tspan>`, found `</tspan><tspan class="fg-magenta bold">i32</tspan><tspan>`</tspan>
<tspan x="10px" y="154px"><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
</tspan>
<tspan x="10px" y="172px"><tspan class="fg-ansi256-010 bold">note</tspan><tspan>: required for `Struct` to implement `Foo&lt;i32&gt;`</tspan>
<tspan x="10px" y="172px"><tspan> </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: the trait `Bar&lt;</tspan><tspan class="fg-magenta bold">i32</tspan><tspan>&gt;` </tspan><tspan class="fg-magenta bold">is not</tspan><tspan> implemented for `Struct`</tspan>
</tspan>
<tspan x="10px" y="190px"><tspan> </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/highlight-difference-between-expected-trait-and-found-trait.rs:11:12</tspan>
<tspan x="10px" y="190px"><tspan> but trait `Bar&lt;</tspan><tspan class="fg-magenta bold">()</tspan><tspan>&gt;` </tspan><tspan class="fg-magenta bold">is</tspan><tspan> implemented for it</tspan>
</tspan>
<tspan x="10px" y="208px"><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
<tspan x="10px" y="208px"><tspan> </tspan><tspan class="fg-ansi256-012 bold">= </tspan><tspan class="bold">help</tspan><tspan>: for that trait implementation, expected `</tspan><tspan class="fg-magenta bold">()</tspan><tspan>`, found `</tspan><tspan class="fg-magenta bold">i32</tspan><tspan>`</tspan>
</tspan>
<tspan x="10px" y="226px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> impl&lt;T, K&gt; Foo&lt;K&gt; for T where T: Bar&lt;K&gt;</tspan>
<tspan x="10px" y="226px"><tspan class="fg-ansi256-010 bold">note</tspan><tspan>: required for `Struct` to implement `Foo&lt;i32&gt;`</tspan>
</tspan>
<tspan x="10px" y="244px"><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-010 bold">^^^^^^</tspan><tspan> </tspan><tspan class="fg-ansi256-010 bold">^</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">------</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">unsatisfied trait bound introduced here</tspan>
<tspan x="10px" y="244px"><tspan> </tspan><tspan class="fg-ansi256-012 bold">--&gt; </tspan><tspan>$DIR/highlight-difference-between-expected-trait-and-found-trait.rs:11:12</tspan>
</tspan>
<tspan x="10px" y="262px">
<tspan x="10px" y="262px"><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan>
</tspan>
<tspan x="10px" y="280px"><tspan class="fg-ansi256-009 bold">error</tspan><tspan class="bold">: aborting due to 1 previous error</tspan>
<tspan x="10px" y="280px"><tspan class="fg-ansi256-012 bold">LL</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> impl&lt;T, K&gt; Foo&lt;K&gt; for T where T: Bar&lt;K&gt;</tspan>
</tspan>
<tspan x="10px" y="298px">
<tspan x="10px" y="298px"><tspan> </tspan><tspan class="fg-ansi256-012 bold">|</tspan><tspan> </tspan><tspan class="fg-ansi256-010 bold">^^^^^^</tspan><tspan> </tspan><tspan class="fg-ansi256-010 bold">^</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">------</tspan><tspan> </tspan><tspan class="fg-ansi256-012 bold">unsatisfied trait bound introduced here</tspan>
</tspan>
<tspan x="10px" y="316px"><tspan class="bold">For more information about this error, try `rustc --explain E0277`.</tspan>
<tspan x="10px" y="316px">
</tspan>
<tspan x="10px" y="334px">
<tspan x="10px" y="334px"><tspan class="fg-ansi256-009 bold">error</tspan><tspan class="bold">: aborting due to 1 previous error</tspan>
</tspan>
<tspan x="10px" y="352px">
</tspan>
<tspan x="10px" y="370px"><tspan class="bold">For more information about this error, try `rustc --explain E0277`.</tspan>
</tspan>
<tspan x="10px" y="388px">
</tspan>
</text>

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3
tests/ui/impl-trait/in-trait/return-dont-satisfy-bounds.stderr
View File

@ -32,7 +32,8 @@ LL | fn foo<F2: Foo<u8>>(self) -> impl Foo<u8> {
LL | self
| ---- return type was inferred to be `Bar` here
|
= help: the trait `Foo<char>` is implemented for `Bar`
= help: the trait `Foo<u8>` is not implemented for `Bar`
but trait `Foo<char>` is implemented for it
= help: for that trait implementation, expected `char`, found `u8`
error: aborting due to 3 previous errors

6
tests/ui/impl-trait/issue-55872-1.stderr
View File

@ -12,6 +12,9 @@ error[E0277]: the trait bound `S: Copy` is not satisfied in `(S, T)`
|
LL | fn foo<T: Default>() -> Self::E {
| ^^^^^^^ within `(S, T)`, the trait `Copy` is not implemented for `S`
...
LL | (S::default(), T::default())
| ---------------------------- return type was inferred to be `(S, T)` here
|
= note: required because it appears within the type `(S, T)`
help: consider further restricting this bound
@ -24,6 +27,9 @@ error[E0277]: the trait bound `T: Copy` is not satisfied in `(S, T)`
|
LL | fn foo<T: Default>() -> Self::E {
| ^^^^^^^ within `(S, T)`, the trait `Copy` is not implemented for `T`
...
LL | (S::default(), T::default())
| ---------------------------- return type was inferred to be `(S, T)` here
|
= note: required because it appears within the type `(S, T)`
help: consider further restricting this bound

3
tests/ui/impl-trait/issue-55872-3.stderr
View File

@ -3,6 +3,9 @@ error[E0277]: the trait bound `{async block@$DIR/issue-55872-3.rs:15:9: 15:14}:
|
LL | fn foo<T>() -> Self::E {
| ^^^^^^^ the trait `Copy` is not implemented for `{async block@$DIR/issue-55872-3.rs:15:9: 15:14}`
LL |
LL | async {}
| -------- return type was inferred to be `{async block@$DIR/issue-55872-3.rs:15:9: 15:14}` here
error: aborting due to 1 previous error

6
tests/ui/impl-trait/issues/issue-62742.stderr
View File

@ -29,7 +29,8 @@ error[E0277]: the trait bound `RawImpl<_>: Raw<_>` is not satisfied
LL | WrongImpl::foo(0i32);
| ^^^^^^^^^ the trait `Raw<_>` is not implemented for `RawImpl<_>`
|
= help: the trait `Raw<[_]>` is implemented for `RawImpl<_>`
= help: the trait `Raw<_>` is not implemented for `RawImpl<_>`
but trait `Raw<[_]>` is implemented for it
note: required by a bound in `SafeImpl`
--> $DIR/issue-62742.rs:33:35
|
@ -67,7 +68,8 @@ error[E0277]: the trait bound `RawImpl<()>: Raw<()>` is not satisfied
LL | WrongImpl::<()>::foo(0i32);
| ^^^^^^^^^^^^^^^ the trait `Raw<()>` is not implemented for `RawImpl<()>`
|
= help: the trait `Raw<[()]>` is implemented for `RawImpl<()>`
= help: the trait `Raw<()>` is not implemented for `RawImpl<()>`
but trait `Raw<[()]>` is implemented for it
= help: for that trait implementation, expected `[()]`, found `()`
note: required by a bound in `SafeImpl`
--> $DIR/issue-62742.rs:33:35

6
tests/ui/impl-trait/nested-rpit-hrtb.stderr
View File

@ -83,7 +83,8 @@ error[E0277]: the trait bound `for<'a> &'a (): Qux<'b>` is not satisfied
LL | fn one_hrtb_mention_fn_trait_param_uses<'b>() -> impl for<'a> Bar<'a, Assoc = impl Qux<'b>> {}
| ^^^^^^^^^^^^ the trait `for<'a> Qux<'b>` is not implemented for `&'a ()`
|
= help: the trait `Qux<'_>` is implemented for `()`
= help: the trait `Qux<'b>` is not implemented for `&'a ()`
but trait `Qux<'_>` is implemented for `()`
= help: for that trait implementation, expected `()`, found `&'a ()`
error: implementation of `Bar` is not general enough
@ -101,7 +102,8 @@ error[E0277]: the trait bound `for<'a, 'b> &'a (): Qux<'b>` is not satisfied
LL | fn two_htrb_trait_param_uses() -> impl for<'a> Bar<'a, Assoc = impl for<'b> Qux<'b>> {}
| ^^^^^^^^^^^^^^^^^^^^ the trait `for<'a, 'b> Qux<'b>` is not implemented for `&'a ()`
|
= help: the trait `Qux<'_>` is implemented for `()`
= help: the trait `Qux<'b>` is not implemented for `&'a ()`
but trait `Qux<'_>` is implemented for `()`
= help: for that trait implementation, expected `()`, found `&'a ()`
error: aborting due to 9 previous errors

8
tests/ui/impl-trait/nested_impl_trait.stderr
View File

@ -46,7 +46,9 @@ error[E0277]: the trait bound `impl Debug: From<impl Into<u32>>` is not satisfie
--> $DIR/nested_impl_trait.rs:6:46
|
LL | fn bad_in_ret_position(x: impl Into<u32>) -> impl Into<impl Debug> { x }
| ^^^^^^^^^^^^^^^^^^^^^ the trait `From<impl Into<u32>>` is not implemented for `impl Debug`
| ^^^^^^^^^^^^^^^^^^^^^ - return type was inferred to be `impl Into<u32>` here
| |
| the trait `From<impl Into<u32>>` is not implemented for `impl Debug`
|
= help: the trait `Into<U>` is implemented for `T`
= note: required for `impl Into<u32>` to implement `Into<impl Debug>`
@ -55,7 +57,9 @@ error[E0277]: the trait bound `impl Debug: From<impl Into<u32>>` is not satisfie
--> $DIR/nested_impl_trait.rs:19:34
|
LL | fn bad(x: impl Into<u32>) -> impl Into<impl Debug> { x }
| ^^^^^^^^^^^^^^^^^^^^^ the trait `From<impl Into<u32>>` is not implemented for `impl Debug`
| ^^^^^^^^^^^^^^^^^^^^^ - return type was inferred to be `impl Into<u32>` here
| |
| the trait `From<impl Into<u32>>` is not implemented for `impl Debug`
|
= help: the trait `Into<U>` is implemented for `T`
= note: required for `impl Into<u32>` to implement `Into<impl Debug>`

3
tests/ui/impl-trait/opaque-cast-field-access-in-future.stderr
View File

@ -3,6 +3,9 @@ error[E0283]: type annotations needed
|
LL | fn run() -> Foo<impl Future<Output = ()>> {
| ^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type
LL |
LL | loop {}
| ------- return type was inferred to be `!` here
|
= note: cannot satisfy `_: Future`

3
tests/ui/impl-trait/projection-mismatch-in-impl-where-clause.stderr
View File

@ -3,6 +3,9 @@ error[E0271]: type mismatch resolving `<() as Super>::Assoc == ()`
|
LL | fn test() -> impl Test {
| ^^^^^^^^^ type mismatch resolving `<() as Super>::Assoc == ()`
LL |
LL | ()
| -- return type was inferred to be `()` here
|
note: expected this to be `()`
--> $DIR/projection-mismatch-in-impl-where-clause.rs:6:18

2
tests/ui/indexing/index-help.stderr
View File

@ -5,7 +5,7 @@ LL | x[0i32];
| ^^^^ slice indices are of type `usize` or ranges of `usize`
|
= help: the trait `SliceIndex<[{integer}]>` is not implemented for `i32`
= help: the trait `SliceIndex<[{integer}]>` is implemented for `usize`
but it is implemented for `usize`
= help: for that trait implementation, expected `usize`, found `i32`
= note: required for `Vec<{integer}>` to implement `Index<i32>`

2
tests/ui/indexing/indexing-requires-a-uint.stderr
View File

@ -5,7 +5,7 @@ LL | [0][0u8];
| ^^^ slice indices are of type `usize` or ranges of `usize`
|
= help: the trait `SliceIndex<[{integer}]>` is not implemented for `u8`
= help: the trait `SliceIndex<[{integer}]>` is implemented for `usize`
but it is implemented for `usize`
= help: for that trait implementation, expected `usize`, found `u8`
= note: required for `[{integer}]` to implement `Index<u8>`
= note: 1 redundant requirement hidden

3
tests/ui/indexing/point-at-index-for-obligation-failure.stderr
View File

@ -4,7 +4,8 @@ error[E0277]: the trait bound `String: Borrow<&str>` is not satisfied
LL | &s
| ^^ the trait `Borrow<&str>` is not implemented for `String`
|
= help: the trait `Borrow<str>` is implemented for `String`
= help: the trait `Borrow<&_>` is not implemented for `String`
but trait `Borrow<_>` is implemented for it
= help: for that trait implementation, expected `str`, found `&str`
= note: required for `HashMap<String, String>` to implement `Index<&&str>`

16
tests/ui/integral-indexing.stderr
View File

@ -5,7 +5,7 @@ LL | v[3u8];
| ^^^ slice indices are of type `usize` or ranges of `usize`
|
= help: the trait `SliceIndex<[isize]>` is not implemented for `u8`
= help: the trait `SliceIndex<[isize]>` is implemented for `usize`
but it is implemented for `usize`
= help: for that trait implementation, expected `usize`, found `u8`
= note: required for `Vec<isize>` to implement `Index<u8>`
@ -16,7 +16,7 @@ LL | v[3i8];
| ^^^ slice indices are of type `usize` or ranges of `usize`
|
= help: the trait `SliceIndex<[isize]>` is not implemented for `i8`
= help: the trait `SliceIndex<[isize]>` is implemented for `usize`
but it is implemented for `usize`
= help: for that trait implementation, expected `usize`, found `i8`
= note: required for `Vec<isize>` to implement `Index<i8>`
@ -27,7 +27,7 @@ LL | v[3u32];
| ^^^^ slice indices are of type `usize` or ranges of `usize`
|
= help: the trait `SliceIndex<[isize]>` is not implemented for `u32`
= help: the trait `SliceIndex<[isize]>` is implemented for `usize`
but it is implemented for `usize`
= help: for that trait implementation, expected `usize`, found `u32`
= note: required for `Vec<isize>` to implement `Index<u32>`
@ -38,7 +38,7 @@ LL | v[3i32];
| ^^^^ slice indices are of type `usize` or ranges of `usize`
|
= help: the trait `SliceIndex<[isize]>` is not implemented for `i32`
= help: the trait `SliceIndex<[isize]>` is implemented for `usize`
but it is implemented for `usize`
= help: for that trait implementation, expected `usize`, found `i32`
= note: required for `Vec<isize>` to implement `Index<i32>`
@ -49,7 +49,7 @@ LL | s.as_bytes()[3u8];
| ^^^ slice indices are of type `usize` or ranges of `usize`
|
= help: the trait `SliceIndex<[u8]>` is not implemented for `u8`
= help: the trait `SliceIndex<[u8]>` is implemented for `usize`
but it is implemented for `usize`
= help: for that trait implementation, expected `usize`, found `u8`
= note: required for `[u8]` to implement `Index<u8>`
@ -60,7 +60,7 @@ LL | s.as_bytes()[3i8];
| ^^^ slice indices are of type `usize` or ranges of `usize`
|
= help: the trait `SliceIndex<[u8]>` is not implemented for `i8`
= help: the trait `SliceIndex<[u8]>` is implemented for `usize`
but it is implemented for `usize`
= help: for that trait implementation, expected `usize`, found `i8`
= note: required for `[u8]` to implement `Index<i8>`
@ -71,7 +71,7 @@ LL | s.as_bytes()[3u32];
| ^^^^ slice indices are of type `usize` or ranges of `usize`
|
= help: the trait `SliceIndex<[u8]>` is not implemented for `u32`
= help: the trait `SliceIndex<[u8]>` is implemented for `usize`
but it is implemented for `usize`
= help: for that trait implementation, expected `usize`, found `u32`
= note: required for `[u8]` to implement `Index<u32>`
@ -82,7 +82,7 @@ LL | s.as_bytes()[3i32];
| ^^^^ slice indices are of type `usize` or ranges of `usize`
|
= help: the trait `SliceIndex<[u8]>` is not implemented for `i32`
= help: the trait `SliceIndex<[u8]>` is implemented for `usize`
but it is implemented for `usize`
= help: for that trait implementation, expected `usize`, found `i32`
= note: required for `[u8]` to implement `Index<i32>`

2
tests/ui/issues/issue-34334.stderr
View File

@ -18,7 +18,7 @@ LL | let sr2: Vec<(u32, _, _)> = sr.iter().map(|(faction, th_sender, th_rece
| ^^^^^^^ value of type `Vec<(u32, _, _)>` cannot be built from `std::iter::Iterator<Item=()>`
|
= help: the trait `FromIterator<()>` is not implemented for `Vec<(u32, _, _)>`
= help: the trait `FromIterator<(u32, _, _)>` is implemented for `Vec<(u32, _, _)>`
but trait `FromIterator<(u32, _, _)>` is implemented for it
= help: for that trait implementation, expected `(u32, _, _)`, found `()`
note: the method call chain might not have had the expected associated types
--> $DIR/issue-34334.rs:5:43

3
tests/ui/issues/issue-45801.stderr
View File

@ -4,7 +4,8 @@ error[E0277]: the trait bound `Params: Plugin<i32>` is not satisfied
LL | req.get_ref::<Params>();
| ^^^^^^^ the trait `Plugin<i32>` is not implemented for `Params`
|
= help: the trait `Plugin<Foo>` is implemented for `Params`
= help: the trait `Plugin<i32>` is not implemented for `Params`
but trait `Plugin<Foo>` is implemented for it
= help: for that trait implementation, expected `Foo`, found `i32`
error: aborting due to 1 previous error

8
tests/ui/issues/issue-66923-show-error-for-correct-call.stderr
View File

@ -4,8 +4,8 @@ error[E0277]: a value of type `Vec<f64>` cannot be built from an iterator over e
LL | let x2: Vec<f64> = x1.into_iter().collect();
| ^^^^^^^ value of type `Vec<f64>` cannot be built from `std::iter::Iterator<Item=&f64>`
|
= help: the trait `FromIterator<&f64>` is not implemented for `Vec<f64>`
= help: the trait `FromIterator<f64>` is implemented for `Vec<f64>`
= help: the trait `FromIterator<&_>` is not implemented for `Vec<f64>`
but trait `FromIterator<_>` is implemented for it
= help: for that trait implementation, expected `f64`, found `&f64`
note: the method call chain might not have had the expected associated types
--> $DIR/issue-66923-show-error-for-correct-call.rs:8:27
@ -25,8 +25,8 @@ LL | let x3 = x1.into_iter().collect::<Vec<f64>>();
| |
| required by a bound introduced by this call
|
= help: the trait `FromIterator<&f64>` is not implemented for `Vec<f64>`
= help: the trait `FromIterator<f64>` is implemented for `Vec<f64>`
= help: the trait `FromIterator<&_>` is not implemented for `Vec<f64>`
but trait `FromIterator<_>` is implemented for it
= help: for that trait implementation, expected `f64`, found `&f64`
note: the method call chain might not have had the expected associated types
--> $DIR/issue-66923-show-error-for-correct-call.rs:12:17

6
tests/ui/iterators/invalid-iterator-chain-fixable.stderr
View File

@ -6,8 +6,8 @@ LL | let i = i.map(|x| x.clone());
LL | i.collect()
| ^^^^^^^ value of type `Vec<X>` cannot be built from `std::iter::Iterator<Item=&X>`
|
= help: the trait `FromIterator<&X>` is not implemented for `Vec<X>`
= help: the trait `FromIterator<X>` is implemented for `Vec<X>`
= help: the trait `FromIterator<&_>` is not implemented for `Vec<X>`
but trait `FromIterator<_>` is implemented for it
= help: for that trait implementation, expected `X`, found `&X`
note: the method call chain might not have had the expected associated types
--> $DIR/invalid-iterator-chain-fixable.rs:5:26
@ -124,7 +124,7 @@ LL | let g: Vec<i32> = f.collect();
| ^^^^^^^ value of type `Vec<i32>` cannot be built from `std::iter::Iterator<Item=()>`
|
= help: the trait `FromIterator<()>` is not implemented for `Vec<i32>`
= help: the trait `FromIterator<i32>` is implemented for `Vec<i32>`
but trait `FromIterator<i32>` is implemented for it
= help: for that trait implementation, expected `i32`, found `()`
note: the method call chain might not have had the expected associated types
--> $DIR/invalid-iterator-chain-fixable.rs:32:15

6
tests/ui/iterators/invalid-iterator-chain.stderr
View File

@ -6,8 +6,8 @@ LL | let i = i.map(|x| x.clone());
LL | i.collect()
| ^^^^^^^ value of type `Vec<X>` cannot be built from `std::iter::Iterator<Item=&X>`
|
= help: the trait `FromIterator<&X>` is not implemented for `Vec<X>`
= help: the trait `FromIterator<X>` is implemented for `Vec<X>`
= help: the trait `FromIterator<&_>` is not implemented for `Vec<X>`
but trait `FromIterator<_>` is implemented for it
= help: for that trait implementation, expected `X`, found `&X`
note: the method call chain might not have had the expected associated types
--> $DIR/invalid-iterator-chain.rs:4:26
@ -181,7 +181,7 @@ LL | let g: Vec<i32> = f.collect();
| ^^^^^^^ value of type `Vec<i32>` cannot be built from `std::iter::Iterator<Item=()>`
|
= help: the trait `FromIterator<()>` is not implemented for `Vec<i32>`
= help: the trait `FromIterator<i32>` is implemented for `Vec<i32>`
but trait `FromIterator<i32>` is implemented for it
= help: for that trait implementation, expected `i32`, found `()`
note: the method call chain might not have had the expected associated types
--> $DIR/invalid-iterator-chain.rs:44:15

3
tests/ui/lifetimes/lifetime-elision-return-type-trait.stderr
View File

@ -3,6 +3,9 @@ error[E0277]: the trait bound `Result<(), _>: Future` is not satisfied
|
LL | fn foo() -> impl Future<Item=(), Error=Box<dyn Error>> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Future` is not implemented for `Result<(), _>`
LL |
LL | Ok(())
| ------ return type was inferred to be `Result<(), _>` here
|
help: this trait has no implementations, consider adding one
--> $DIR/lifetime-elision-return-type-trait.rs:1:1

3
tests/ui/lint/issue-106991.stderr
View File

@ -3,6 +3,9 @@ error[E0271]: expected `foo` to be a fn item that returns `i32`, but it returns
|
LL | fn bar() -> impl Iterator<Item = i32> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^ expected `i32`, found `()`
...
LL | x.iter_mut().map(foo)
| --------------------- return type was inferred to be `Map<std::slice::IterMut<'_, Vec<u8>>, for<'a> fn(&'a mut Vec<u8>) {foo}>` here
|
= note: required for `Map<std::slice::IterMut<'_, Vec<u8>>, for<'a> fn(&'a mut Vec<u8>) {foo}>` to implement `Iterator`

3
tests/ui/never_type/from_infer_breaking_with_unit_fallback.unit.stderr
View File

@ -4,7 +4,8 @@ error[E0277]: the trait bound `E: From<()>` is not satisfied
LL | <E as From<_>>::from(never); // Should the inference fail?
| ^ the trait `From<()>` is not implemented for `E`
|
= help: the trait `From<!>` is implemented for `E`
= help: the trait `From<()>` is not implemented for `E`
but trait `From<!>` is implemented for it
= help: for that trait implementation, expected `!`, found `()`
error: aborting due to 1 previous error

6
tests/ui/never_type/impl_trait_fallback2.stderr
View File

@ -3,6 +3,9 @@ error[E0277]: the trait bound `(): T` is not satisfied
|
LL | fn should_ret_unit() -> impl T {
| ^^^^^^ the trait `T` is not implemented for `()`
LL |
LL | panic!()
| -------- return type was inferred to be `_` here
|
= help: the trait `T` is implemented for `i32`
@ -11,6 +14,9 @@ error[E0277]: the trait bound `(): T` is not satisfied
|
LL | fn a() -> Foo {
| ^^^ the trait `T` is not implemented for `()`
LL |
LL | panic!()
| -------- return type was inferred to be `_` here
|
= help: the trait `T` is implemented for `i32`

3
tests/ui/never_type/impl_trait_fallback3.stderr
View File

@ -3,6 +3,9 @@ error[E0277]: the trait bound `(): T` is not satisfied
|
LL | fn a() -> Foo {
| ^^^ the trait `T` is not implemented for `()`
...
LL | panic!()
| -------- return type was inferred to be `_` here
|
help: this trait has no implementations, consider adding one
--> $DIR/impl_trait_fallback3.rs:5:1

3
tests/ui/never_type/impl_trait_fallback4.stderr
View File

@ -3,6 +3,9 @@ error[E0277]: the trait bound `(): T` is not satisfied
|
LL | fn foo() -> impl T {
| ^^^^^^ the trait `T` is not implemented for `()`
LL |
LL | panic!()
| -------- return type was inferred to be `_` here
|
help: this trait has no implementations, consider adding one
--> $DIR/impl_trait_fallback4.rs:3:1

3
tests/ui/never_type/never-value-fallback-issue-66757.nofallback.stderr
View File

@ -4,7 +4,8 @@ error[E0277]: the trait bound `E: From<()>` is not satisfied
LL | <E as From<_>>::from(never);
| ^ the trait `From<()>` is not implemented for `E`
|
= help: the trait `From<!>` is implemented for `E`
= help: the trait `From<()>` is not implemented for `E`
but trait `From<!>` is implemented for it
= help: for that trait implementation, expected `!`, found `()`
error: aborting due to 1 previous error

2
tests/ui/on-unimplemented/impl-substs.stderr
View File

@ -7,7 +7,7 @@ LL | Foo::<usize>::foo((1i32, 1i32, 1i32));
| required by a bound introduced by this call
|
= help: the trait `Foo<usize>` is not implemented for `(i32, i32, i32)`
= help: the trait `Foo<i32>` is implemented for `(i32, i32, i32)`
but trait `Foo<i32>` is implemented for it
= help: for that trait implementation, expected `i32`, found `usize`
error: aborting due to 1 previous error

4
tests/ui/on-unimplemented/on-impl.stderr
View File

@ -7,7 +7,7 @@ LL | Index::<u32>::index(&[1, 2, 3] as &[i32], 2u32);
| required by a bound introduced by this call
|
= help: the trait `Index<u32>` is not implemented for `[i32]`
= help: the trait `Index<usize>` is implemented for `[i32]`
but trait `Index<usize>` is implemented for it
= help: for that trait implementation, expected `usize`, found `u32`
error[E0277]: the trait bound `[i32]: Index<u32>` is not satisfied
@ -17,7 +17,7 @@ LL | Index::<u32>::index(&[1, 2, 3] as &[i32], 2u32);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ a usize is required to index into a slice
|
= help: the trait `Index<u32>` is not implemented for `[i32]`
= help: the trait `Index<usize>` is implemented for `[i32]`
but trait `Index<usize>` is implemented for it
= help: for that trait implementation, expected `usize`, found `u32`
error: aborting due to 2 previous errors

2
tests/ui/on-unimplemented/slice-index.stderr
View File

@ -5,7 +5,7 @@ LL | x[1i32];
| ^^^^ slice indices are of type `usize` or ranges of `usize`
|
= help: the trait `SliceIndex<[i32]>` is not implemented for `i32`
= help: the trait `SliceIndex<[i32]>` is implemented for `usize`
but it is implemented for `usize`
= help: for that trait implementation, expected `usize`, found `i32`
= note: required for `[i32]` to implement `Index<i32>`

12
tests/ui/str/str-idx.stderr
View File

@ -4,10 +4,10 @@ error[E0277]: the type `str` cannot be indexed by `{integer}`
LL | let _: u8 = s[4];
| ^ string indices are ranges of `usize`
|
= help: the trait `SliceIndex<str>` is not implemented for `{integer}`
= note: you can use `.chars().nth()` or `.bytes().nth()`
for more information, see chapter 8 in The Book: <https://doc.rust-lang.org/book/ch08-02-strings.html#indexing-into-strings>
= help: the trait `SliceIndex<[_]>` is implemented for `usize`
= help: the trait `SliceIndex<str>` is not implemented for `{integer}`
but trait `SliceIndex<[_]>` is implemented for `usize`
= help: for that trait implementation, expected `[_]`, found `str`
= note: required for `str` to implement `Index<{integer}>`
@ -19,10 +19,10 @@ LL | let _ = s.get(4);
| |
| required by a bound introduced by this call
|
= help: the trait `SliceIndex<str>` is not implemented for `{integer}`
= note: you can use `.chars().nth()` or `.bytes().nth()`
for more information, see chapter 8 in The Book: <https://doc.rust-lang.org/book/ch08-02-strings.html#indexing-into-strings>
= help: the trait `SliceIndex<[_]>` is implemented for `usize`
= help: the trait `SliceIndex<str>` is not implemented for `{integer}`
but trait `SliceIndex<[_]>` is implemented for `usize`
= help: for that trait implementation, expected `[_]`, found `str`
note: required by a bound in `core::str::<impl str>::get`
--> $SRC_DIR/core/src/str/mod.rs:LL:COL
@ -35,10 +35,10 @@ LL | let _ = s.get_unchecked(4);
| |
| required by a bound introduced by this call
|
= help: the trait `SliceIndex<str>` is not implemented for `{integer}`
= note: you can use `.chars().nth()` or `.bytes().nth()`
for more information, see chapter 8 in The Book: <https://doc.rust-lang.org/book/ch08-02-strings.html#indexing-into-strings>
= help: the trait `SliceIndex<[_]>` is implemented for `usize`
= help: the trait `SliceIndex<str>` is not implemented for `{integer}`
but trait `SliceIndex<[_]>` is implemented for `usize`
= help: for that trait implementation, expected `[_]`, found `str`
note: required by a bound in `core::str::<impl str>::get_unchecked`
--> $SRC_DIR/core/src/str/mod.rs:LL:COL

10
tests/ui/str/str-mut-idx.stderr
View File

@ -31,7 +31,7 @@ LL | s[1usize] = bot();
| ^^^^^^ string indices are ranges of `usize`
|
= help: the trait `SliceIndex<str>` is not implemented for `usize`
= help: the trait `SliceIndex<[_]>` is implemented for `usize`
but trait `SliceIndex<[_]>` is implemented for it
= help: for that trait implementation, expected `[_]`, found `str`
= note: required for `str` to implement `Index<usize>`
@ -43,10 +43,10 @@ LL | s.get_mut(1);
| |
| required by a bound introduced by this call
|
= help: the trait `SliceIndex<str>` is not implemented for `{integer}`
= note: you can use `.chars().nth()` or `.bytes().nth()`
for more information, see chapter 8 in The Book: <https://doc.rust-lang.org/book/ch08-02-strings.html#indexing-into-strings>
= help: the trait `SliceIndex<[_]>` is implemented for `usize`
= help: the trait `SliceIndex<str>` is not implemented for `{integer}`
but trait `SliceIndex<[_]>` is implemented for `usize`
= help: for that trait implementation, expected `[_]`, found `str`
note: required by a bound in `core::str::<impl str>::get_mut`
--> $SRC_DIR/core/src/str/mod.rs:LL:COL
@ -59,10 +59,10 @@ LL | s.get_unchecked_mut(1);
| |
| required by a bound introduced by this call
|
= help: the trait `SliceIndex<str>` is not implemented for `{integer}`
= note: you can use `.chars().nth()` or `.bytes().nth()`
for more information, see chapter 8 in The Book: <https://doc.rust-lang.org/book/ch08-02-strings.html#indexing-into-strings>
= help: the trait `SliceIndex<[_]>` is implemented for `usize`
= help: the trait `SliceIndex<str>` is not implemented for `{integer}`
but trait `SliceIndex<[_]>` is implemented for `usize`
= help: for that trait implementation, expected `[_]`, found `str`
note: required by a bound in `core::str::<impl str>::get_unchecked_mut`
--> $SRC_DIR/core/src/str/mod.rs:LL:COL

3
tests/ui/suggestions/fn-ctor-passed-as-arg-where-it-should-have-been-called.stderr
View File

@ -20,10 +20,11 @@ error[E0277]: the trait bound `{closure@$DIR/fn-ctor-passed-as-arg-where-it-shou
--> $DIR/fn-ctor-passed-as-arg-where-it-should-have-been-called.rs:19:9
|
LL | bar(closure);
| --- ^^^^^^^ the trait `T` is not implemented for closure `{closure@$DIR/fn-ctor-passed-as-arg-where-it-should-have-been-called.rs:18:19: 18:21}`
| --- ^^^^^^^ unsatisfied trait bound
| |
| required by a bound introduced by this call
|
= help: the trait `T` is not implemented for closure `{closure@$DIR/fn-ctor-passed-as-arg-where-it-should-have-been-called.rs:18:19: 18:21}`
note: required by a bound in `bar`
--> $DIR/fn-ctor-passed-as-arg-where-it-should-have-been-called.rs:14:16
|

3
tests/ui/suggestions/issue-101623.stderr
View File

@ -7,7 +7,8 @@ LL | Trait::do_stuff({ fun(&mut *inner) });
| | the trait `Trait<'_>` is not implemented for `*mut ()`
| required by a bound introduced by this call
|
= help: the trait `Trait<'_>` is implemented for `()`
= help: the trait `Trait<'_>` is not implemented for `*mut ()`
but it is implemented for `()`
= help: for that trait implementation, expected `()`, found `*mut ()`
error: aborting due to 1 previous error

1
tests/ui/suggestions/issue-84973-blacklist.rs
View File

@ -1,5 +1,6 @@
// Checks that certain traits for which we don't want to suggest borrowing
// are blacklisted and don't cause the suggestion to be issued.
//@compile-flags: --diagnostic-width=300
#![feature(coroutines)]

24
tests/ui/suggestions/issue-84973-blacklist.stderr
View File

@ -1,5 +1,5 @@
error[E0277]: the trait bound `String: Copy` is not satisfied
--> $DIR/issue-84973-blacklist.rs:15:12
--> $DIR/issue-84973-blacklist.rs:16:12
|
LL | f_copy("".to_string());
| ------ ^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `String`
@ -7,7 +7,7 @@ LL | f_copy("".to_string());
| required by a bound introduced by this call
|
note: required by a bound in `f_copy`
--> $DIR/issue-84973-blacklist.rs:6:14
--> $DIR/issue-84973-blacklist.rs:7:14
|
LL | fn f_copy<T: Copy>(t: T) {}
| ^^^^ required by this bound in `f_copy`
@ -18,7 +18,7 @@ LL + f_copy("");
|
error[E0277]: the trait bound `S: Clone` is not satisfied
--> $DIR/issue-84973-blacklist.rs:16:13
--> $DIR/issue-84973-blacklist.rs:17:13
|
LL | f_clone(S);
| ------- ^ the trait `Clone` is not implemented for `S`
@ -26,7 +26,7 @@ LL | f_clone(S);
| required by a bound introduced by this call
|
note: required by a bound in `f_clone`
--> $DIR/issue-84973-blacklist.rs:7:15
--> $DIR/issue-84973-blacklist.rs:8:15
|
LL | fn f_clone<T: Clone>(t: T) {}
| ^^^^^ required by this bound in `f_clone`
@ -36,24 +36,24 @@ LL + #[derive(Clone)]
LL | struct S;
|
error[E0277]: `{static coroutine@$DIR/issue-84973-blacklist.rs:17:26: 17:35}` cannot be unpinned
--> $DIR/issue-84973-blacklist.rs:17:26
error[E0277]: `{static coroutine@$DIR/issue-84973-blacklist.rs:18:26: 18:35}` cannot be unpinned
--> $DIR/issue-84973-blacklist.rs:18:26
|
LL | f_unpin(#[coroutine] static || { yield; });
| ------- ^^^^^^^^^^^^^^^^^^^^ the trait `Unpin` is not implemented for `{static coroutine@$DIR/issue-84973-blacklist.rs:17:26: 17:35}`
| ------- ^^^^^^^^^^^^^^^^^^^^ the trait `Unpin` is not implemented for `{static coroutine@$DIR/issue-84973-blacklist.rs:18:26: 18:35}`
| |
| required by a bound introduced by this call
|
= note: consider using the `pin!` macro
consider using `Box::pin` if you need to access the pinned value outside of the current scope
note: required by a bound in `f_unpin`
--> $DIR/issue-84973-blacklist.rs:8:15
--> $DIR/issue-84973-blacklist.rs:9:15
|
LL | fn f_unpin<T: Unpin>(t: T) {}
| ^^^^^ required by this bound in `f_unpin`
error[E0277]: the size for values of type `dyn Fn()` cannot be known at compilation time
--> $DIR/issue-84973-blacklist.rs:22:13
--> $DIR/issue-84973-blacklist.rs:23:13
|
LL | f_sized(*ref_cl);
| ------- ^^^^^^^ doesn't have a size known at compile-time
@ -62,7 +62,7 @@ LL | f_sized(*ref_cl);
|
= help: the trait `Sized` is not implemented for `dyn Fn()`
note: required by a bound in `f_sized`
--> $DIR/issue-84973-blacklist.rs:9:15
--> $DIR/issue-84973-blacklist.rs:10:15
|
LL | fn f_sized<T: Sized>(t: T) {}
| ^^^^^ required by this bound in `f_sized`
@ -73,7 +73,7 @@ LL + f_sized(ref_cl);
|
error[E0277]: `Rc<{integer}>` cannot be sent between threads safely
--> $DIR/issue-84973-blacklist.rs:27:12
--> $DIR/issue-84973-blacklist.rs:28:12
|
LL | f_send(rc);
| ------ ^^ `Rc<{integer}>` cannot be sent between threads safely
@ -82,7 +82,7 @@ LL | f_send(rc);
|
= help: the trait `Send` is not implemented for `Rc<{integer}>`
note: required by a bound in `f_send`
--> $DIR/issue-84973-blacklist.rs:10:14
--> $DIR/issue-84973-blacklist.rs:11:14
|
LL | fn f_send<T: Send>(t: T) {}
| ^^^^ required by this bound in `f_send`

4
tests/ui/suggestions/suggest-dereferencing-index.stderr
View File

@ -4,8 +4,8 @@ error[E0277]: the type `[{integer}]` cannot be indexed by `&usize`
LL | let one_item_please: i32 = [1, 2, 3][i];
| ^ slice indices are of type `usize` or ranges of `usize`
|
= help: the trait `SliceIndex<[{integer}]>` is not implemented for `&usize`
= help: the trait `SliceIndex<[{integer}]>` is implemented for `usize`
= help: the trait `SliceIndex<[{integer}]>` is not implemented for `&_`
but it is implemented for `_`
= help: for that trait implementation, expected `usize`, found `&usize`
= note: required for `[{integer}]` to implement `Index<&usize>`
= note: 1 redundant requirement hidden

3
tests/ui/traits/coercion-generic-bad.stderr
View File

@ -4,7 +4,8 @@ error[E0277]: the trait bound `Struct: Trait<isize>` is not satisfied
LL | let s: Box<dyn Trait<isize>> = Box::new(Struct { person: "Fred" });
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Trait<isize>` is not implemented for `Struct`
|
= help: the trait `Trait<&'static str>` is implemented for `Struct`
= help: the trait `Trait<isize>` is not implemented for `Struct`
but trait `Trait<&'static str>` is implemented for it
= help: for that trait implementation, expected `&'static str`, found `isize`
= note: required for the cast from `Box<Struct>` to `Box<dyn Trait<isize>>`

3
tests/ui/traits/fn-pointer/bare-fn-no-impl-fn-ptr-99875.stderr
View File

@ -20,10 +20,11 @@ error[E0277]: the trait bound `{closure@$DIR/bare-fn-no-impl-fn-ptr-99875.rs:14:
--> $DIR/bare-fn-no-impl-fn-ptr-99875.rs:14:11
|
LL | takes(|_: Argument| -> Return { todo!() });
| ----- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Trait` is not implemented for closure `{closure@$DIR/bare-fn-no-impl-fn-ptr-99875.rs:14:11: 14:34}`
| ----- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
| |
| required by a bound introduced by this call
|
= help: the trait `Trait` is not implemented for closure `{closure@$DIR/bare-fn-no-impl-fn-ptr-99875.rs:14:11: 14:34}`
= help: the trait `Trait` is implemented for fn pointer `fn(Argument) -> Return`
note: required by a bound in `takes`
--> $DIR/bare-fn-no-impl-fn-ptr-99875.rs:9:18

6
tests/ui/traits/negative-bounds/on-unimplemented.stderr
View File

@ -6,12 +6,6 @@ LL | fn hello() -> impl !Foo {
LL |
LL | NotFoo
| ------ return type was inferred to be `NotFoo` here
|
help: this trait has no implementations, consider adding one
--> $DIR/on-unimplemented.rs:4:1
|
LL | trait Foo {}
| ^^^^^^^^^
error: aborting due to 1 previous error

11
tests/ui/traits/negative-bounds/simple.stderr
View File

@ -28,17 +28,11 @@ error[E0277]: the trait bound `Copyable: !Copy` is not satisfied
LL | not_copy::<Copyable>();
| ^^^^^^^^ the trait bound `Copyable: !Copy` is not satisfied
|
= help: the trait `Copy` is implemented for `Copyable`
note: required by a bound in `not_copy`
--> $DIR/simple.rs:3:16
|
LL | fn not_copy<T: !Copy>() {}
| ^^^^^ required by this bound in `not_copy`
help: consider annotating `Copyable` with `#[derive(Copy)]`
|
LL + #[derive(Copy)]
LL | struct Copyable;
|
error[E0277]: the trait bound `NotNecessarilyCopyable: !Copy` is not satisfied
--> $DIR/simple.rs:37:16
@ -51,11 +45,6 @@ note: required by a bound in `not_copy`
|
LL | fn not_copy<T: !Copy>() {}
| ^^^^^ required by this bound in `not_copy`
help: consider annotating `NotNecessarilyCopyable` with `#[derive(Copy)]`
|
LL + #[derive(Copy)]
LL | struct NotNecessarilyCopyable;
|
error: aborting due to 4 previous errors

2
tests/ui/traits/next-solver/coroutine.rs
View File

@ -1,4 +1,4 @@
//@ compile-flags: -Znext-solver
//@ compile-flags: -Znext-solver --diagnostic-width=300
//@ edition: 2021
//@ revisions: pass fail
//@[pass] check-pass

3
tests/ui/transmutability/assoc-bound.stderr
View File

@ -2,8 +2,9 @@ error[E0277]: the trait bound `<T as A>::AssocA: TransmuteFrom<(), Assume { alig
--> $DIR/assoc-bound.rs:16:19
|
LL | type AssocB = T::AssocA;
| ^^^^^^^^^ the trait `TransmuteFrom<(), Assume { alignment: false, lifetimes: false, safety: false, validity: false }>` is not implemented for `<T as A>::AssocA`
| ^^^^^^^^^ unsatisfied trait bound
|
= help: the trait `TransmuteFrom<(), Assume { alignment: false, lifetimes: false, safety: false, validity: false }>` is not implemented for `<T as A>::AssocA`
note: required by a bound in `B::AssocB`
--> $DIR/assoc-bound.rs:9:18
|

3
tests/ui/try-block/try-block-bad-type.stderr
View File

@ -7,7 +7,8 @@ LL | Err("")?;
| this can't be annotated with `?` because it has type `Result<_, &str>`
|
= note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
= help: the trait `From<Infallible>` is implemented for `TryFromSliceError`
= help: the trait `From<&str>` is not implemented for `TryFromSliceError`
but trait `From<Infallible>` is implemented for it
= help: for that trait implementation, expected `Infallible`, found `&str`
= note: required for `Result<u32, TryFromSliceError>` to implement `FromResidual<Result<Infallible, &str>>`

8
tests/ui/try-trait/bad-interconversion.stderr
View File

@ -67,7 +67,7 @@ LL | ControlFlow::Continue(Err("hello")?)
| ^ this `?` produces `Result<Infallible, &str>`, which is incompatible with `ControlFlow<String>`
|
= help: the trait `FromResidual<Result<Infallible, &str>>` is not implemented for `ControlFlow<String>`
= help: the trait `FromResidual<ControlFlow<String, Infallible>>` is implemented for `ControlFlow<String>`
but trait `FromResidual<ControlFlow<String, Infallible>>` is implemented for it
= help: for that trait implementation, expected `ControlFlow<String, Infallible>`, found `Result<Infallible, &str>`
error[E0277]: the `?` operator can only be used on `ControlFlow`s in a function that returns `ControlFlow`
@ -79,7 +79,7 @@ LL | Some(3)?;
| ^ this `?` produces `Option<Infallible>`, which is incompatible with `ControlFlow<u64>`
|
= help: the trait `FromResidual<Option<Infallible>>` is not implemented for `ControlFlow<u64>`
= help: the trait `FromResidual<ControlFlow<u64, Infallible>>` is implemented for `ControlFlow<u64>`
but trait `FromResidual<ControlFlow<u64, Infallible>>` is implemented for it
= help: for that trait implementation, expected `ControlFlow<u64, Infallible>`, found `Option<Infallible>`
error[E0277]: the `?` operator in a function that returns `ControlFlow<B, _>` can only be used on other `ControlFlow<B, _>`s (with the same Break type)
@ -90,9 +90,9 @@ LL | fn control_flow_to_control_flow() -> ControlFlow<i64> {
LL | ControlFlow::Break(4_u8)?;
| ^ this `?` produces `ControlFlow<u8, Infallible>`, which is incompatible with `ControlFlow<i64>`
|
= help: the trait `FromResidual<ControlFlow<u8, Infallible>>` is not implemented for `ControlFlow<i64>`
= note: unlike `Result`, there's no `From`-conversion performed for `ControlFlow`
= help: the trait `FromResidual<ControlFlow<i64, Infallible>>` is implemented for `ControlFlow<i64>`
= help: the trait `FromResidual<ControlFlow<u8, _>>` is not implemented for `ControlFlow<i64>`
but trait `FromResidual<ControlFlow<i64, _>>` is implemented for it
= help: for that trait implementation, expected `i64`, found `u8`
error: aborting due to 8 previous errors

3
tests/ui/type-alias-impl-trait/constrain_in_projection.current.stderr
View File

@ -4,7 +4,8 @@ error[E0277]: the trait bound `Foo: Trait<Bar>` is not satisfied
LL | let x = <Foo as Trait<Bar>>::Assoc::default();
| ^^^ the trait `Trait<Bar>` is not implemented for `Foo`
|
= help: the trait `Trait<()>` is implemented for `Foo`
= help: the trait `Trait<Bar>` is not implemented for `Foo`
but trait `Trait<()>` is implemented for it
error: aborting due to 1 previous error

5
tests/ui/type-alias-impl-trait/fallback.stderr
View File

@ -4,7 +4,10 @@ error[E0283]: type annotations needed
LL | fn unconstrained_foo() -> Wrapper<Foo> {
| ------------ type must be known at this point
LL | Wrapper::Second
| ^^^^^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the enum `Wrapper`
| ^^^^^^^^^^^^^^^
| |
| cannot infer type of the type parameter `T` declared on the enum `Wrapper`
| return type was inferred to be `Wrapper<_>` here
|
= note: cannot satisfy `_: Copy`
help: consider specifying the generic argument

3
tests/ui/type-alias-impl-trait/nested-tait-inference.current.stderr
View File

@ -7,7 +7,8 @@ LL | fn foo() -> impl Foo<FooX> {
LL | ()
| -- return type was inferred to be `()` here
|
= help: the trait `Foo<()>` is implemented for `()`
= help: the trait `Foo<FooX>` is not implemented for `()`
but trait `Foo<()>` is implemented for it
error: aborting due to 1 previous error

3
tests/ui/type-alias-impl-trait/non-lifetime-binder-in-constraint.stderr
View File

@ -17,6 +17,9 @@ error[E0277]: the trait bound `{integer}: Trait<()>` is not satisfied
|
LL | fn produce() -> impl for<T> Trait<(), Assoc = impl Trait<T>> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Trait<()>` is not implemented for `{integer}`
...
LL | 16
| -- return type was inferred to be `{integer}` here
|
help: this trait has no implementations, consider adding one
--> $DIR/non-lifetime-binder-in-constraint.rs:4:1

2
tests/ui/type-alias-impl-trait/self-referential-2.current.stderr
View File

@ -7,7 +7,7 @@ LL | 42_i32
| ------ return type was inferred to be `i32` here
|
= help: the trait `PartialEq<Foo>` is not implemented for `i32`
= help: the trait `PartialEq` is implemented for `i32`
but trait `PartialEq<i32>` is implemented for it
error: aborting due to 1 previous error

3
tests/ui/typeck/suggest-similar-impls-for-root-obligation.stderr
View File

@ -4,7 +4,8 @@ error[E0277]: the trait bound `((),): Into<Bar>` is not satisfied
LL | let _: Bar = ((),).into();
| ^^^^ the trait `Foo<'_>` is not implemented for `((),)`
|
= help: the trait `Foo<'_>` is implemented for `()`
= help: the trait `Foo<'_>` is not implemented for `((),)`
but it is implemented for `()`
= help: for that trait implementation, expected `()`, found `((),)`
note: required for `Bar` to implement `From<((),)>`
--> $DIR/suggest-similar-impls-for-root-obligation.rs:7:22

3
tests/ui/where-clauses/higher-ranked-fn-type.verbose.stderr
View File

@ -2,8 +2,9 @@ error[E0277]: the trait bound `for<Region(BrNamed(DefId(0:6 ~ higher_ranked_fn_t
--> $DIR/higher-ranked-fn-type.rs:20:5
|
LL | called()
| ^^^^^^^^ the trait `for<Region(BrNamed(DefId(0:6 ~ higher_ranked_fn_type[9e51]::called::'b), 'b))> Foo` is not implemented for `fn(&'^1_0.Named(DefId(0:6 ~ higher_ranked_fn_type[9e51]::called::'b), "'b") ())`
| ^^^^^^^^ unsatisfied trait bound
|
= help: the trait `for<Region(BrNamed(DefId(0:6 ~ higher_ranked_fn_type[9e51]::called::'b), 'b))> Foo` is not implemented for `fn(&'^1_0.Named(DefId(0:6 ~ higher_ranked_fn_type[9e51]::called::'b), "'b") ())`
help: this trait has no implementations, consider adding one
--> $DIR/higher-ranked-fn-type.rs:6:1
|