Auto merge of #75514 - gdhuper:gdhuper/replace_log_with_tracing, r=davidtwco

Replaced `log` with `tracing`

## Description

Replaced `log` with `tracing` in the following crates:
- [x] librustc_ast
- [x] librustc_driver
- [x]  librustc_errors
- [x] librustc_expand
- [x]  librustc_hir
- [x]  librustc_incremental
- [x]  librustc_infer
- [x]  librustc_interface
- [x]  librustc_lint
- [x]  librustc_metadata
- [x]  librustc_middle
- [x]  librustc_mir
- [x]  librustc_mir_build
- [x]  librustc_parse
- [x]  librustc_passes
- [x]  librustc_privacy
- [x]  librustc_query_system
- [x]  librustc_resolve
- [x]  librustc_save_analysis
- [x] librustc_session
- [x] librustc_span
- [x] librustc_symbol_mangling
- [x] librustc_target
- [x] librustc_trait_selection
- [x] librustc_traits
- [x] librustc_ty
- [x] librustc_typeck
- [x] compiletest

Fixes: #74747

## Checklist:
- [x] Code compiles / builds
- [x] run tidy
- [x] Cleanup any clippy warnings
- [x] Update/add docs

src/librustc_ast/Cargo.toml

@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 rustc_serialize = { path = "../librustc_serialize" }
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_span = { path = "../librustc_span" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_index = { path = "../librustc_index" }

src/librustc_ast/util/literal.rs

@@ -10,8 +10,8 @@ use rustc_lexer::unescape::{unescape_byte_literal, unescape_literal, Mode};
 use rustc_span::symbol::{kw, sym, Symbol};
 use rustc_span::Span;
 
-use log::debug;
 use std::ascii;
+use tracing::debug;
 
 pub enum LitError {
     NotLiteral,

src/librustc_driver/Cargo.toml

@@ -12,7 +12,7 @@ crate-type = ["dylib"]
 [dependencies]
 lazy_static = "1.0"
 libc = "0.2"
-log = { package = "tracing", version = "0.1.18", features = ["release_max_level_info"]  }
+tracing = { version = "0.1.18", features = ["release_max_level_info"]  }
 tracing-subscriber = { version = "0.2.10", default-features = false, features = ["fmt", "env-filter", "smallvec", "parking_lot", "ansi"] }
 rustc_middle = { path = "../librustc_middle" }
 rustc_ast_pretty = { path = "../librustc_ast_pretty" }

src/librustc_driver/lib.rs

@@ -9,7 +9,7 @@
 #![recursion_limit = "256"]
 
 #[macro_use]
-extern crate log;
+extern crate tracing;
 #[macro_use]
 extern crate lazy_static;
 
@@ -1224,13 +1224,13 @@ pub fn install_ice_hook() {
 }
 
 /// This allows tools to enable rust logging without having to magically match rustc's
-/// log crate version.
+/// tracing crate version.
 pub fn init_rustc_env_logger() {
     init_env_logger("RUSTC_LOG")
 }
 
 /// This allows tools to enable rust logging without having to magically match rustc's
-/// log crate version. In contrast to `init_rustc_env_logger` it allows you to choose an env var
+/// tracing crate version. In contrast to `init_rustc_env_logger` it allows you to choose an env var
 /// other than `RUSTC_LOG`.
 pub fn init_env_logger(env: &str) {
     // Don't register a dispatcher if there's no filter to print anything

src/librustc_errors/Cargo.toml

@@ -10,7 +10,7 @@ path = "lib.rs"
 doctest = false
 
 [dependencies]
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_serialize = { path = "../librustc_serialize" }
 rustc_span = { path = "../librustc_span" }
 rustc_macros = { path = "../librustc_macros" }

src/librustc_errors/diagnostic_builder.rs

@@ -1,11 +1,11 @@
 use crate::{Applicability, Handler, Level, StashKey};
 use crate::{Diagnostic, DiagnosticId, DiagnosticStyledString};
 
-use log::debug;
 use rustc_span::{MultiSpan, Span};
 use std::fmt::{self, Debug};
 use std::ops::{Deref, DerefMut};
 use std::thread::panicking;
+use tracing::debug;
 
 /// Used for emitting structured error messages and other diagnostic information.
 ///

src/librustc_errors/emitter.rs

@@ -18,7 +18,6 @@ use crate::{
     pluralize, CodeSuggestion, Diagnostic, DiagnosticId, Level, SubDiagnostic, SuggestionStyle,
 };
 
-use log::*;
 use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::sync::Lrc;
 use rustc_span::hygiene::{ExpnKind, MacroKind};
@@ -30,6 +29,7 @@ use std::iter;
 use std::path::Path;
 use termcolor::{Ansi, BufferWriter, ColorChoice, ColorSpec, StandardStream};
 use termcolor::{Buffer, Color, WriteColor};
+use tracing::*;
 
 /// Default column width, used in tests and when terminal dimensions cannot be determined.
 const DEFAULT_COLUMN_WIDTH: usize = 140;

src/librustc_errors/lib.rs

@@ -11,7 +11,7 @@ extern crate rustc_macros;
 
 pub use emitter::ColorConfig;
 
-use log::debug;
+use tracing::debug;
 use Level::*;
 
 use emitter::{is_case_difference, Emitter, EmitterWriter};

src/librustc_expand/Cargo.toml

@@ -12,7 +12,7 @@ doctest = false
 
 [dependencies]
 rustc_serialize = { path = "../librustc_serialize" }
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_span = { path = "../librustc_span" }
 rustc_ast_pretty = { path = "../librustc_ast_pretty" }
 rustc_ast_passes = { path = "../librustc_ast_passes" }

src/librustc_expand/mbe/macro_rules.rs

@@ -25,10 +25,10 @@ use rustc_span::hygiene::Transparency;
 use rustc_span::symbol::{kw, sym, Ident, MacroRulesNormalizedIdent};
 use rustc_span::Span;
 
-use log::debug;
 use std::borrow::Cow;
 use std::collections::hash_map::Entry;
 use std::{mem, slice};
+use tracing::debug;
 
 crate struct ParserAnyMacro<'a> {
     parser: Parser<'a>,

src/librustc_hir/Cargo.toml

@@ -18,5 +18,5 @@ rustc_span = { path = "../librustc_span" }
 rustc_serialize = { path = "../librustc_serialize" }
 rustc_ast = { path = "../librustc_ast" }
 lazy_static = "1"
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 smallvec = { version = "1.0", features = ["union", "may_dangle"] }

src/librustc_hir/definitions.rs

@@ -15,9 +15,9 @@ use rustc_index::vec::IndexVec;
 use rustc_span::hygiene::ExpnId;
 use rustc_span::symbol::{sym, Symbol};
 
-use log::debug;
 use std::fmt::Write;
 use std::hash::Hash;
+use tracing::debug;
 
 /// The `DefPathTable` maps `DefIndex`es to `DefKey`s and vice versa.
 /// Internally the `DefPathTable` holds a tree of `DefKey`s, where each `DefKey`

src/librustc_incremental/Cargo.toml

@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 rustc_graphviz = { path = "../librustc_graphviz" }
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rand = "0.7"
 rustc_middle = { path = "../librustc_middle" }
 rustc_data_structures = { path = "../librustc_data_structures" }

src/librustc_incremental/lib.rs

@@ -8,7 +8,7 @@
 #[macro_use]
 extern crate rustc_middle;
 #[macro_use]
-extern crate log;
+extern crate tracing;
 
 mod assert_dep_graph;
 pub mod assert_module_sources;

src/librustc_infer/Cargo.toml

@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 rustc_graphviz = { path = "../librustc_graphviz" }
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_middle = { path = "../librustc_middle" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_errors = { path = "../librustc_errors" }

src/librustc_infer/lib.rs

@@ -33,7 +33,7 @@ extern crate rustc_macros;
 #[macro_use]
 extern crate rustc_data_structures;
 #[macro_use]
-extern crate log;
+extern crate tracing;
 #[macro_use]
 extern crate rustc_middle;
 

src/librustc_interface/Cargo.toml

@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 libc = "0.2"
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rayon = { version = "0.3.0", package = "rustc-rayon" }
 smallvec = { version = "1.0", features = ["union", "may_dangle"] }
 rustc_ast = { path = "../librustc_ast" }

src/librustc_interface/interface.rs

@@ -198,7 +198,7 @@ pub fn create_compiler_and_run<R>(config: Config, f: impl FnOnce(&Compiler) -> R
 }
 
 pub fn run_compiler<R: Send>(mut config: Config, f: impl FnOnce(&Compiler) -> R + Send) -> R {
-    log::trace!("run_compiler");
+    tracing::trace!("run_compiler");
     let stderr = config.stderr.take();
     util::setup_callbacks_and_run_in_thread_pool_with_globals(
         config.opts.edition,

src/librustc_interface/passes.rs

@@ -2,7 +2,6 @@ use crate::interface::{Compiler, Result};
 use crate::proc_macro_decls;
 use crate::util;
 
-use log::{info, warn};
 use once_cell::sync::Lazy;
 use rustc_ast::mut_visit::MutVisitor;
 use rustc_ast::{self, ast, visit};
@@ -39,6 +38,7 @@ use rustc_span::symbol::Symbol;
 use rustc_span::{FileName, RealFileName};
 use rustc_trait_selection::traits;
 use rustc_typeck as typeck;
+use tracing::{info, warn};
 
 use rustc_serialize::json;
 use tempfile::Builder as TempFileBuilder;
@@ -104,7 +104,7 @@ pub fn configure_and_expand(
     krate: ast::Crate,
     crate_name: &str,
 ) -> Result<(ast::Crate, BoxedResolver)> {
-    log::trace!("configure_and_expand");
+    tracing::trace!("configure_and_expand");
     // Currently, we ignore the name resolution data structures for the purposes of dependency
     // tracking. Instead we will run name resolution and include its output in the hash of each
     // item, much like we do for macro expansion. In other words, the hash reflects not just
@@ -229,7 +229,7 @@ fn configure_and_expand_inner<'a>(
     resolver_arenas: &'a ResolverArenas<'a>,
     metadata_loader: &'a MetadataLoaderDyn,
 ) -> Result<(ast::Crate, Resolver<'a>)> {
-    log::trace!("configure_and_expand_inner");
+    tracing::trace!("configure_and_expand_inner");
     pre_expansion_lint(sess, lint_store, &krate);
 
     let mut resolver = Resolver::new(sess, &krate, crate_name, metadata_loader, &resolver_arenas);
@@ -342,7 +342,7 @@ fn configure_and_expand_inner<'a>(
     });
 
     if let Some(PpMode::PpmSource(PpSourceMode::PpmEveryBodyLoops)) = sess.opts.pretty {
-        log::debug!("replacing bodies with loop {{}}");
+        tracing::debug!("replacing bodies with loop {{}}");
         util::ReplaceBodyWithLoop::new(&mut resolver).visit_crate(&mut krate);
     }
 

src/librustc_interface/queries.rs

@@ -168,7 +168,7 @@ impl<'tcx> Queries<'tcx> {
     pub fn expansion(
         &self,
     ) -> Result<&Query<(ast::Crate, Steal<Rc<RefCell<BoxedResolver>>>, Lrc<LintStore>)>> {
-        log::trace!("expansion");
+        tracing::trace!("expansion");
         self.expansion.compute(|| {
             let crate_name = self.crate_name()?.peek().clone();
             let (krate, lint_store) = self.register_plugins()?.take();

src/librustc_interface/util.rs

@@ -1,4 +1,3 @@
-use log::info;
 use rustc_ast::ast::{AttrVec, BlockCheckMode};
 use rustc_ast::mut_visit::{visit_clobber, MutVisitor, *};
 use rustc_ast::ptr::P;
@@ -33,6 +32,7 @@ use std::path::{Path, PathBuf};
 use std::sync::{Arc, Mutex, Once};
 #[cfg(not(parallel_compiler))]
 use std::{panic, thread};
+use tracing::info;
 
 /// Adds `target_feature = "..."` cfgs for a variety of platform
 /// specific features (SSE, NEON etc.).

src/librustc_lint/Cargo.toml

@@ -9,7 +9,7 @@ name = "rustc_lint"
 path = "lib.rs"
 
 [dependencies]
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 unicode-security = "0.0.5"
 rustc_middle = { path = "../librustc_middle" }
 rustc_ast_pretty = { path = "../librustc_ast_pretty" }

src/librustc_lint/builtin.rs

@@ -51,8 +51,8 @@ use rustc_trait_selection::traits::misc::can_type_implement_copy;
 
 use crate::nonstandard_style::{method_context, MethodLateContext};
 
-use log::{debug, trace};
 use std::fmt::Write;
+use tracing::{debug, trace};
 
 // hardwired lints from librustc_middle
 pub use rustc_session::lint::builtin::*;

src/librustc_lint/early.rs

@@ -23,8 +23,8 @@ use rustc_session::Session;
 use rustc_span::symbol::Ident;
 use rustc_span::Span;
 
-use log::debug;
 use std::slice;
+use tracing::debug;
 
 macro_rules! run_early_pass { ($cx:expr, $f:ident, $($args:expr),*) => ({
     $cx.pass.$f(&$cx.context, $($args),*);

src/librustc_lint/late.rs

@@ -28,10 +28,10 @@ use rustc_session::lint::LintPass;
 use rustc_span::symbol::Symbol;
 use rustc_span::Span;
 
-use log::debug;
 use std::any::Any;
 use std::cell::Cell;
 use std::slice;
+use tracing::debug;
 
 /// Extract the `LintStore` from the query context.
 /// This function exists because we've erased `LintStore` as `dyn Any` in the context.

src/librustc_lint/types.rs

@@ -19,8 +19,8 @@ use rustc_target::abi::Abi;
 use rustc_target::abi::{Integer, LayoutOf, TagEncoding, VariantIdx, Variants};
 use rustc_target::spec::abi::Abi as SpecAbi;
 
-use log::debug;
 use std::cmp;
+use tracing::debug;
 
 declare_lint! {
     UNUSED_COMPARISONS,

src/librustc_lint/unused.rs

@@ -17,7 +17,7 @@ use rustc_span::symbol::Symbol;
 use rustc_span::symbol::{kw, sym};
 use rustc_span::{BytePos, Span, DUMMY_SP};
 
-use log::debug;
+use tracing::debug;
 
 declare_lint! {
     pub UNUSED_MUST_USE,

src/librustc_metadata/Cargo.toml

@@ -12,7 +12,7 @@ doctest = false
 [dependencies]
 flate2 = "1.0"
 libc = "0.2"
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 memmap = "0.7"
 smallvec = { version = "1.0", features = ["union", "may_dangle"] }
 rustc_middle = { path = "../librustc_middle" }

src/librustc_metadata/creader.rs

@@ -26,10 +26,10 @@ use rustc_span::symbol::{sym, Symbol};
 use rustc_span::{Span, DUMMY_SP};
 use rustc_target::spec::{PanicStrategy, TargetTriple};
 
-use log::{debug, info};
 use proc_macro::bridge::client::ProcMacro;
 use std::path::Path;
 use std::{cmp, env, fs};
+use tracing::{debug, info};
 
 #[derive(Clone)]
 pub struct CStore {

src/librustc_metadata/dependency_format.rs

@@ -159,11 +159,11 @@ fn calculate_type(tcx: TyCtxt<'_>, ty: CrateType) -> DependencyList {
         let name = tcx.crate_name(cnum);
         let src = tcx.used_crate_source(cnum);
         if src.dylib.is_some() {
-            log::info!("adding dylib: {}", name);
+            tracing::info!("adding dylib: {}", name);
             add_library(tcx, cnum, RequireDynamic, &mut formats);
             let deps = tcx.dylib_dependency_formats(cnum);
             for &(depnum, style) in deps.iter() {
-                log::info!("adding {:?}: {}", style, tcx.crate_name(depnum));
+                tracing::info!("adding {:?}: {}", style, tcx.crate_name(depnum));
                 add_library(tcx, depnum, style, &mut formats);
             }
         }
@@ -191,7 +191,7 @@ fn calculate_type(tcx: TyCtxt<'_>, ty: CrateType) -> DependencyList {
             && tcx.dep_kind(cnum) == CrateDepKind::Explicit
         {
             assert!(src.rlib.is_some() || src.rmeta.is_some());
-            log::info!("adding staticlib: {}", tcx.crate_name(cnum));
+            tracing::info!("adding staticlib: {}", tcx.crate_name(cnum));
             add_library(tcx, cnum, RequireStatic, &mut formats);
             ret[cnum.as_usize() - 1] = Linkage::Static;
         }

src/librustc_metadata/locator.rs

@@ -230,11 +230,11 @@ use rustc_span::Span;
 use rustc_target::spec::{Target, TargetTriple};
 
 use flate2::read::DeflateDecoder;
-use log::{debug, info, warn};
 use std::io::{Read, Result as IoResult, Write};
 use std::ops::Deref;
 use std::path::{Path, PathBuf};
 use std::{cmp, fmt, fs};
+use tracing::{debug, info, warn};
 
 #[derive(Clone)]
 crate struct CrateLocator<'a> {

src/librustc_metadata/rmeta/decoder.rs

@@ -37,13 +37,13 @@ use rustc_span::source_map::{respan, Spanned};
 use rustc_span::symbol::{sym, Ident, Symbol};
 use rustc_span::{self, hygiene::MacroKind, BytePos, ExpnId, Pos, Span, SyntaxContext, DUMMY_SP};
 
-use log::debug;
 use proc_macro::bridge::client::ProcMacro;
 use std::cell::Cell;
 use std::io;
 use std::mem;
 use std::num::NonZeroUsize;
 use std::path::Path;
+use tracing::debug;
 
 pub use cstore_impl::{provide, provide_extern};
 use rustc_span::hygiene::HygieneDecodeContext;

src/librustc_metadata/rmeta/encoder.rs

@@ -1,7 +1,6 @@
 use crate::rmeta::table::{FixedSizeEncoding, TableBuilder};
 use crate::rmeta::*;
 
-use log::{debug, trace};
 use rustc_ast::ast;
 use rustc_data_structures::fingerprint::{Fingerprint, FingerprintEncoder};
 use rustc_data_structures::fx::{FxHashMap, FxHashSet, FxIndexSet};
@@ -37,6 +36,7 @@ use rustc_target::abi::VariantIdx;
 use std::hash::Hash;
 use std::num::NonZeroUsize;
 use std::path::Path;
+use tracing::{debug, trace};
 
 pub(super) struct EncodeContext<'a, 'tcx> {
     opaque: opaque::Encoder,

src/librustc_metadata/rmeta/table.rs

@@ -1,11 +1,11 @@
 use crate::rmeta::*;
 
-use log::debug;
 use rustc_index::vec::Idx;
 use rustc_serialize::opaque::Encoder;
 use std::convert::TryInto;
 use std::marker::PhantomData;
 use std::num::NonZeroUsize;
+use tracing::debug;
 
 /// Helper trait, for encoding to, and decoding from, a fixed number of bytes.
 /// Used mainly for Lazy positions and lengths.

src/librustc_middle/Cargo.toml

@@ -12,7 +12,7 @@ doctest = false
 [dependencies]
 rustc_arena = { path = "../librustc_arena" }
 bitflags = "1.2.1"
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc-rayon-core = "0.3.0"
 polonius-engine = "0.12.0"
 rustc_apfloat = { path = "../librustc_apfloat" }

src/librustc_middle/lib.rs

@@ -60,7 +60,7 @@ extern crate rustc_macros;
 #[macro_use]
 extern crate rustc_data_structures;
 #[macro_use]
-extern crate log;
+extern crate tracing;
 #[macro_use]
 extern crate smallvec;
 

src/librustc_mir/Cargo.toml

@@ -13,7 +13,7 @@ doctest = false
 either = "1.5.0"
 rustc_graphviz = { path = "../librustc_graphviz" }
 itertools = "0.8"
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 log_settings = "0.1.1"
 polonius-engine = "0.12.0"
 rustc_middle = { path = "../librustc_middle" }

src/librustc_mir/borrow_check/diagnostics/outlives_suggestion.rs

@@ -3,10 +3,10 @@
 
 use std::collections::BTreeMap;
 
-use log::debug;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_errors::DiagnosticBuilder;
 use rustc_middle::ty::RegionVid;
+use tracing::debug;
 
 use smallvec::SmallVec;
 

src/librustc_mir/lib.rs

@@ -30,7 +30,7 @@ Rust MIR: a lowered representation of Rust.
 #![recursion_limit = "256"]
 
 #[macro_use]
-extern crate log;
+extern crate tracing;
 #[macro_use]
 extern crate rustc_middle;
 

src/librustc_mir_build/Cargo.toml

@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 rustc_arena = { path = "../librustc_arena" }
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_middle = { path = "../librustc_middle" }
 rustc_apfloat = { path = "../librustc_apfloat" }
 rustc_attr = { path = "../librustc_attr" }

src/librustc_mir_build/lib.rs

@@ -12,7 +12,7 @@
 #![recursion_limit = "256"]
 
 #[macro_use]
-extern crate log;
+extern crate tracing;
 #[macro_use]
 extern crate rustc_middle;
 

src/librustc_parse/Cargo.toml

@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 bitflags = "1.0"
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_ast_pretty = { path = "../librustc_ast_pretty" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_feature = { path = "../librustc_feature" }

src/librustc_parse/lexer/mod.rs

@@ -8,8 +8,8 @@ use rustc_session::parse::ParseSess;
 use rustc_span::symbol::{sym, Symbol};
 use rustc_span::{BytePos, Pos, Span};
 
-use log::debug;
 use std::char;
+use tracing::debug;
 
 mod tokentrees;
 mod unescape_error_reporting;

src/librustc_parse/lexer/unescape_error_reporting.rs

@@ -18,7 +18,7 @@ pub(crate) fn emit_unescape_error(
     range: Range<usize>,
     error: EscapeError,
 ) {
-    log::debug!(
+    tracing::debug!(
         "emit_unescape_error: {:?}, {:?}, {:?}, {:?}, {:?}",
         lit,
         span_with_quotes,

src/librustc_parse/lib.rs

@@ -20,7 +20,7 @@ use std::mem;
 use std::path::Path;
 use std::str;
 
-use log::{debug, info};
+use tracing::{debug, info};
 
 pub const MACRO_ARGUMENTS: Option<&'static str> = Some("macro arguments");
 

src/librustc_parse/parser/attr.rs

@@ -6,7 +6,7 @@ use rustc_ast_pretty::pprust;
 use rustc_errors::{error_code, PResult};
 use rustc_span::Span;
 
-use log::debug;
+use tracing::debug;
 
 #[derive(Debug)]
 pub(super) enum InnerAttrPolicy<'a> {

src/librustc_parse/parser/diagnostics.rs

@@ -16,7 +16,7 @@ use rustc_span::source_map::Spanned;
 use rustc_span::symbol::{kw, Ident};
 use rustc_span::{MultiSpan, Span, SpanSnippetError, DUMMY_SP};
 
-use log::{debug, trace};
+use tracing::{debug, trace};
 
 const TURBOFISH: &str = "use `::<...>` instead of `<...>` to specify type arguments";
 

src/librustc_parse/parser/expr.rs

@@ -4,7 +4,6 @@ use super::{BlockMode, Parser, PathStyle, Restrictions, TokenType};
 use super::{SemiColonMode, SeqSep, TokenExpectType};
 use crate::maybe_recover_from_interpolated_ty_qpath;
 
-use log::debug;
 use rustc_ast::ast::{self, AttrStyle, AttrVec, CaptureBy, Field, Lit, UnOp, DUMMY_NODE_ID};
 use rustc_ast::ast::{AnonConst, BinOp, BinOpKind, FnDecl, FnRetTy, MacCall, Param, Ty, TyKind};
 use rustc_ast::ast::{Arm, Async, BlockCheckMode, Expr, ExprKind, Label, Movability, RangeLimits};
@@ -18,6 +17,7 @@ use rustc_errors::{Applicability, DiagnosticBuilder, PResult};
 use rustc_span::source_map::{self, Span, Spanned};
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
 use std::mem;
+use tracing::debug;
 
 /// Possibly accepts an `token::Interpolated` expression (a pre-parsed expression
 /// dropped into the token stream, which happens while parsing the result of

src/librustc_parse/parser/item.rs

@@ -20,9 +20,9 @@ use rustc_span::edition::Edition;
 use rustc_span::source_map::{self, Span};
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
 
-use log::debug;
 use std::convert::TryFrom;
 use std::mem;
+use tracing::debug;
 
 impl<'a> Parser<'a> {
     /// Parses a source module as a crate. This is the main entry point for the parser.

src/librustc_parse/parser/mod.rs

@@ -13,7 +13,6 @@ use crate::lexer::UnmatchedBrace;
 use diagnostics::Error;
 pub use path::PathStyle;
 
-use log::debug;
 use rustc_ast::ast::DUMMY_NODE_ID;
 use rustc_ast::ast::{self, AttrStyle, AttrVec, Const, CrateSugar, Extern, Unsafe};
 use rustc_ast::ast::{
@@ -27,6 +26,7 @@ use rustc_errors::{struct_span_err, Applicability, DiagnosticBuilder, FatalError
 use rustc_session::parse::ParseSess;
 use rustc_span::source_map::{respan, Span, DUMMY_SP};
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
+use tracing::debug;
 
 use std::{cmp, mem, slice};
 

src/librustc_parse/parser/path.rs

@@ -10,8 +10,8 @@ use rustc_errors::{pluralize, Applicability, PResult};
 use rustc_span::source_map::{BytePos, Span};
 use rustc_span::symbol::{kw, sym, Ident};
 
-use log::debug;
 use std::mem;
+use tracing::debug;
 
 /// Specifies how to parse a path.
 #[derive(Copy, Clone, PartialEq)]

src/librustc_passes/Cargo.toml

@@ -9,7 +9,7 @@ name = "rustc_passes"
 path = "lib.rs"
 
 [dependencies]
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_middle = { path = "../librustc_middle" }
 rustc_attr = { path = "../librustc_attr" }
 rustc_data_structures = { path = "../librustc_data_structures" }

src/librustc_passes/lib.rs

@@ -13,7 +13,7 @@
 #[macro_use]
 extern crate rustc_middle;
 #[macro_use]
-extern crate log;
+extern crate tracing;
 
 use rustc_middle::ty::query::Providers;
 

src/librustc_privacy/Cargo.toml

@@ -17,4 +17,4 @@ rustc_typeck = { path = "../librustc_typeck" }
 rustc_session = { path = "../librustc_session" }
 rustc_span = { path = "../librustc_span" }
 rustc_data_structures = { path = "../librustc_data_structures" }
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"

src/librustc_privacy/lib.rs

@@ -1853,7 +1853,7 @@ impl SearchInterfaceForPrivateItemsVisitor<'tcx> {
         let ret = self.required_visibility == ty::Visibility::Public
             && self.tcx.is_private_dep(item_id.krate);
 
-        log::debug!("leaks_private_dep(item_id={:?})={}", item_id, ret);
+        tracing::debug!("leaks_private_dep(item_id={:?})={}", item_id, ret);
         ret
     }
 }

src/librustc_query_system/Cargo.toml

@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 rustc_arena = { path = "../librustc_arena" }
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc-rayon-core = "0.3.0"
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_errors = { path = "../librustc_errors" }

src/librustc_query_system/lib.rs

@@ -7,7 +7,7 @@
 #![feature(stmt_expr_attributes)]
 
 #[macro_use]
-extern crate log;
+extern crate tracing;
 #[macro_use]
 extern crate rustc_data_structures;
 #[macro_use]

src/librustc_resolve/Cargo.toml

@@ -12,7 +12,7 @@ doctest = false
 
 [dependencies]
 bitflags = "1.2.1"
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_ast = { path = "../librustc_ast" }
 rustc_arena = { path = "../librustc_arena" }
 rustc_middle = { path = "../librustc_middle" }

src/librustc_resolve/build_reduced_graph.rs

@@ -37,9 +37,9 @@ use rustc_span::source_map::{respan, Spanned};
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
 use rustc_span::Span;
 
-use log::debug;
 use std::cell::Cell;
 use std::ptr;
+use tracing::debug;
 
 type Res = def::Res<NodeId>;
 

src/librustc_resolve/def_collector.rs

@@ -1,5 +1,4 @@
 use crate::Resolver;
-use log::debug;
 use rustc_ast::ast::*;
 use rustc_ast::token::{self, Token};
 use rustc_ast::visit::{self, FnKind};
@@ -11,6 +10,7 @@ use rustc_hir::definitions::*;
 use rustc_span::hygiene::ExpnId;
 use rustc_span::symbol::{kw, sym};
 use rustc_span::Span;
+use tracing::debug;
 
 crate fn collect_definitions(
     resolver: &mut Resolver<'_>,

src/librustc_resolve/diagnostics.rs

@@ -1,7 +1,6 @@
 use std::cmp::Reverse;
 use std::ptr;
 
-use log::debug;
 use rustc_ast::ast::{self, Path};
 use rustc_ast::util::lev_distance::find_best_match_for_name;
 use rustc_ast_pretty::pprust;
@@ -18,6 +17,7 @@ use rustc_span::hygiene::MacroKind;
 use rustc_span::source_map::SourceMap;
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
 use rustc_span::{BytePos, MultiSpan, Span};
+use tracing::debug;
 
 use crate::imports::{Import, ImportKind, ImportResolver};
 use crate::path_names_to_string;

src/librustc_resolve/imports.rs

@@ -28,7 +28,7 @@ use rustc_span::hygiene::ExpnId;
 use rustc_span::symbol::{kw, Ident, Symbol};
 use rustc_span::{MultiSpan, Span};
 
-use log::*;
+use tracing::*;
 
 use std::cell::Cell;
 use std::{mem, ptr};

src/librustc_resolve/late.rs

@@ -29,10 +29,10 @@ use rustc_span::symbol::{kw, sym, Ident, Symbol};
 use rustc_span::Span;
 use smallvec::{smallvec, SmallVec};
 
-use log::debug;
 use rustc_span::source_map::{respan, Spanned};
 use std::collections::BTreeSet;
 use std::mem::{replace, take};
+use tracing::debug;
 
 mod diagnostics;
 crate mod lifetimes;
@@ -1732,7 +1732,12 @@ impl<'a, 'b, 'ast> LateResolutionVisitor<'a, 'b, 'ast> {
         source: PathSource<'ast>,
         crate_lint: CrateLint,
     ) -> PartialRes {
-        log::debug!("smart_resolve_path_fragment(id={:?},qself={:?},path={:?}", id, qself, path);
+        tracing::debug!(
+            "smart_resolve_path_fragment(id={:?},qself={:?},path={:?}",
+            id,
+            qself,
+            path
+        );
         let ns = source.namespace();
         let is_expected = &|res| source.is_expected(res);
 

src/librustc_resolve/late/diagnostics.rs

@@ -20,7 +20,7 @@ use rustc_span::hygiene::MacroKind;
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
 use rustc_span::{BytePos, Span, DUMMY_SP};
 
-use log::debug;
+use tracing::debug;
 
 type Res = def::Res<ast::NodeId>;
 

src/librustc_resolve/late/lifetimes.rs

@@ -26,7 +26,7 @@ use std::borrow::Cow;
 use std::cell::Cell;
 use std::mem::take;
 
-use log::debug;
+use tracing::debug;
 
 // This counts the no of times a lifetime is used
 #[derive(Clone, Copy, Debug)]

src/librustc_resolve/lib.rs

@@ -54,10 +54,10 @@ use rustc_span::source_map::Spanned;
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
 use rustc_span::{Span, DUMMY_SP};
 
-use log::debug;
 use std::cell::{Cell, RefCell};
 use std::collections::BTreeSet;
 use std::{cmp, fmt, iter, ptr};
+use tracing::debug;
 
 use diagnostics::{extend_span_to_previous_binding, find_span_of_binding_until_next_binding};
 use diagnostics::{ImportSuggestion, LabelSuggestion, Suggestion};

src/librustc_save_analysis/Cargo.toml

@@ -9,7 +9,7 @@ name = "rustc_save_analysis"
 path = "lib.rs"
 
 [dependencies]
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_middle = { path = "../librustc_middle" }
 rustc_ast = { path = "../librustc_ast" }
 rustc_ast_pretty = { path = "../librustc_ast_pretty" }

src/librustc_save_analysis/dump_visitor.rs

@@ -45,7 +45,7 @@ use rls_data::{
     RefKind, Relation, RelationKind, SpanData,
 };
 
-use log::{debug, error};
+use tracing::{debug, error};
 
 macro_rules! down_cast_data {
     ($id:ident, $kind:ident, $sp:expr) => {

src/librustc_save_analysis/lib.rs

@@ -45,7 +45,7 @@ use rls_data::{
     RefKind, Relation, RelationKind, SpanData,
 };
 
-use log::{debug, error, info};
+use tracing::{debug, error, info};
 
 pub struct SaveContext<'tcx> {
     tcx: TyCtxt<'tcx>,

src/librustc_session/Cargo.toml

@@ -11,8 +11,8 @@ path = "lib.rs"
 [dependencies]
 bitflags = "1.2.1"
 getopts = "0.2"
-log = { package = "tracing", version = "0.1" }
 rustc_macros = { path = "../librustc_macros" }
+tracing = "0.1"
 rustc_errors = { path = "../librustc_errors" }
 rustc_feature = { path = "../librustc_feature" }
 rustc_target = { path = "../librustc_target" }

src/librustc_session/cgu_reuse_tracker.rs

@@ -2,10 +2,10 @@
 //! compilation. This is used for incremental compilation tests and debug
 //! output.
 
-use log::debug;
 use rustc_data_structures::fx::FxHashMap;
 use rustc_span::{Span, Symbol};
 use std::sync::{Arc, Mutex};
+use tracing::debug;
 
 #[derive(Copy, Clone, Debug, PartialEq, PartialOrd)]
 pub enum CguReuse {

src/librustc_session/config.rs

@@ -1878,7 +1878,7 @@ fn parse_pretty(
                 }
             }
         };
-        log::debug!("got unpretty option: {:?}", first);
+        tracing::debug!("got unpretty option: {:?}", first);
         first
     }
 }

src/librustc_session/filesearch.rs

@@ -8,8 +8,8 @@ use std::fs;
 use std::path::{Path, PathBuf};
 
 use crate::search_paths::{PathKind, SearchPath, SearchPathFile};
-use log::debug;
 use rustc_fs_util::fix_windows_verbatim_for_gcc;
+use tracing::debug;
 
 #[derive(Copy, Clone)]
 pub enum FileMatch {

src/librustc_span/Cargo.toml

@@ -18,6 +18,6 @@ rustc_arena = { path = "../librustc_arena" }
 scoped-tls = "1.0"
 unicode-width = "0.1.4"
 cfg-if = "0.1.2"
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 sha-1 = "0.8"
 md-5 = "0.8"

src/librustc_span/hygiene.rs

@@ -30,12 +30,12 @@ use crate::SESSION_GLOBALS;
 use crate::{Span, DUMMY_SP};
 
 use crate::def_id::{CrateNum, DefId, CRATE_DEF_INDEX, LOCAL_CRATE};
-use log::*;
 use rustc_data_structures::fx::{FxHashMap, FxHashSet};
 use rustc_data_structures::sync::{Lock, Lrc};
 use rustc_macros::HashStable_Generic;
 use rustc_serialize::{Decodable, Decoder, Encodable, Encoder};
 use std::fmt;
+use tracing::*;
 
 /// A `SyntaxContext` represents a chain of pairs `(ExpnId, Transparency)` named "marks".
 #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]

src/librustc_span/source_map.rs

@@ -19,9 +19,9 @@ use std::hash::Hash;
 use std::path::{Path, PathBuf};
 use std::sync::atomic::Ordering;
 
-use log::debug;
 use std::fs;
 use std::io;
+use tracing::debug;
 
 #[cfg(test)]
 mod tests;

src/librustc_symbol_mangling/Cargo.toml

@@ -10,7 +10,7 @@ path = "lib.rs"
 doctest = false
 
 [dependencies]
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 punycode = "0.4.0"
 rustc-demangle = "0.1.16"
 

src/librustc_symbol_mangling/legacy.rs

@@ -8,7 +8,7 @@ use rustc_middle::ty::subst::{GenericArg, GenericArgKind};
 use rustc_middle::ty::{self, Instance, Ty, TyCtxt, TypeFoldable};
 use rustc_middle::util::common::record_time;
 
-use log::debug;
+use tracing::debug;
 
 use std::fmt::{self, Write};
 use std::mem::{self, discriminant};

src/librustc_symbol_mangling/lib.rs

@@ -106,7 +106,7 @@ use rustc_middle::ty::subst::SubstsRef;
 use rustc_middle::ty::{self, Instance, TyCtxt};
 use rustc_session::config::SymbolManglingVersion;
 
-use log::debug;
+use tracing::debug;
 
 mod legacy;
 mod v0;

src/librustc_target/Cargo.toml

@@ -10,7 +10,7 @@ path = "lib.rs"
 
 [dependencies]
 bitflags = "1.2.1"
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_macros = { path = "../librustc_macros" }
 rustc_serialize = { path = "../librustc_serialize" }

src/librustc_target/lib.rs

@@ -20,7 +20,7 @@
 extern crate rustc_macros;
 
 #[macro_use]
-extern crate log;
+extern crate tracing;
 
 pub mod abi;
 pub mod asm;

src/librustc_trait_selection/Cargo.toml

@@ -11,7 +11,7 @@ doctest = false
 
 [dependencies]
 rustc_parse_format = { path = "../librustc_parse_format" }
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_attr = { path = "../librustc_attr" }
 rustc_middle = { path = "../librustc_middle" }
 rustc_ast = { path = "../librustc_ast" }

src/librustc_trait_selection/lib.rs

@@ -24,7 +24,7 @@ extern crate rustc_macros;
 #[macro_use]
 extern crate rustc_data_structures;
 #[macro_use]
-extern crate log;
+extern crate tracing;
 #[macro_use]
 extern crate rustc_middle;
 

src/librustc_traits/Cargo.toml

@@ -9,7 +9,7 @@ name = "rustc_traits"
 path = "lib.rs"
 
 [dependencies]
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_middle = { path = "../librustc_middle" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_hir = { path = "../librustc_hir" }

src/librustc_traits/lib.rs

@@ -8,7 +8,7 @@
 #![recursion_limit = "256"]
 
 #[macro_use]
-extern crate log;
+extern crate tracing;
 #[macro_use]
 extern crate rustc_middle;
 

src/librustc_ty/Cargo.toml

@@ -9,7 +9,7 @@ name = "rustc_ty"
 path = "lib.rs"
 
 [dependencies]
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_middle = { path = "../librustc_middle" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_errors = { path = "../librustc_errors" }

src/librustc_ty/instance.rs

@@ -8,7 +8,7 @@ use rustc_target::spec::abi::Abi;
 use rustc_trait_selection::traits;
 use traits::{translate_substs, Reveal};
 
-use log::debug;
+use tracing::debug;
 
 fn resolve_instance<'tcx>(
     tcx: TyCtxt<'tcx>,

src/librustc_ty/lib.rs

@@ -12,7 +12,7 @@
 #[macro_use]
 extern crate rustc_middle;
 #[macro_use]
-extern crate log;
+extern crate tracing;
 
 use rustc_middle::ty::query::Providers;
 

src/librustc_typeck/Cargo.toml

@@ -12,7 +12,7 @@ doctest = false
 
 [dependencies]
 rustc_arena = { path = "../librustc_arena" }
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 rustc_middle = { path = "../librustc_middle" }
 rustc_attr = { path = "../librustc_attr" }
 rustc_data_structures = { path = "../librustc_data_structures" }

src/librustc_typeck/lib.rs

@@ -69,7 +69,7 @@ This API is completely unstable and subject to change.
 #![recursion_limit = "256"]
 
 #[macro_use]
-extern crate log;
+extern crate tracing;
 
 #[macro_use]
 extern crate rustc_middle;

src/tools/compiletest/Cargo.toml

@@ -8,7 +8,7 @@ edition = "2018"
 diff = "0.1.10"
 env_logger = { version = "0.7", default-features = false }
 getopts = "0.2"
-log = { package = "tracing", version = "0.1" }
+tracing = "0.1"
 regex = "1.0"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"

src/tools/compiletest/src/errors.rs

@@ -8,8 +8,8 @@ use std::path::Path;
 use std::str::FromStr;
 
 use lazy_static::lazy_static;
-use log::*;
 use regex::Regex;
+use tracing::*;
 
 #[derive(Clone, Debug, PartialEq)]
 pub enum ErrorKind {

src/tools/compiletest/src/header.rs

@@ -5,7 +5,7 @@ use std::io::prelude::*;
 use std::io::BufReader;
 use std::path::{Path, PathBuf};
 
-use log::*;
+use tracing::*;
 
 use crate::common::{CompareMode, Config, Debugger, FailMode, Mode, PassMode};
 use crate::extract_gdb_version;

src/tools/compiletest/src/main.rs

@@ -9,7 +9,6 @@ use crate::common::{expected_output_path, output_base_dir, output_relative_path,
 use crate::common::{CompareMode, Config, Debugger, Mode, PassMode, Pretty, TestPaths};
 use crate::util::logv;
 use getopts::Options;
-use log::*;
 use std::env;
 use std::ffi::OsString;
 use std::fs;
@@ -18,6 +17,7 @@ use std::path::{Path, PathBuf};
 use std::process::Command;
 use std::time::SystemTime;
 use test::ColorConfig;
+use tracing::*;
 use walkdir::WalkDir;
 
 use self::header::EarlyProps;

src/tools/compiletest/src/runtest.rs

@@ -30,7 +30,7 @@ use std::str;
 
 use glob::glob;
 use lazy_static::lazy_static;
-use log::*;
+use tracing::*;
 
 use crate::extract_gdb_version;
 use crate::is_android_gdb_target;

src/tools/compiletest/src/util.rs

@@ -3,7 +3,7 @@ use std::env;
 use std::ffi::OsStr;
 use std::path::PathBuf;
 
-use log::*;
+use tracing::*;
 
 #[cfg(test)]
 mod tests;