mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-28 09:44:08 +00:00
36 lines
1.1 KiB
Plaintext
36 lines
1.1 KiB
Plaintext
error[E0308]: mismatched types
|
|
--> $DIR/issue-79187.rs:5:5
|
|
|
|
|
LL | thing(f);
|
|
| ^^^^^^^^ one type is more general than the other
|
|
|
|
|
= note: expected trait `for<'a> FnOnce<(&'a u32,)>`
|
|
found trait `FnOnce<(&u32,)>`
|
|
note: this closure does not fulfill the lifetime requirements
|
|
--> $DIR/issue-79187.rs:4:13
|
|
|
|
|
LL | let f = |_| ();
|
|
| ^^^
|
|
note: the lifetime requirement is introduced here
|
|
--> $DIR/issue-79187.rs:1:18
|
|
|
|
|
LL | fn thing(x: impl FnOnce(&u32)) {}
|
|
| ^^^^^^^^^^^^
|
|
help: consider specifying the type of the closure parameters
|
|
|
|
|
LL | let f = |_: &_| ();
|
|
| ~~~~~~~
|
|
|
|
error: implementation of `FnOnce` is not general enough
|
|
--> $DIR/issue-79187.rs:5:5
|
|
|
|
|
LL | thing(f);
|
|
| ^^^^^^^^ implementation of `FnOnce` is not general enough
|
|
|
|
|
= note: closure with signature `fn(&'2 u32)` must implement `FnOnce<(&'1 u32,)>`, for any lifetime `'1`...
|
|
= note: ...but it actually implements `FnOnce<(&'2 u32,)>`, for some specific lifetime `'2`
|
|
|
|
error: aborting due to 2 previous errors
|
|
|
|
For more information about this error, try `rustc --explain E0308`.
|