rust/src/test/ui/issues/issue-20605.stderr

error[E0277]: the size for values of type `dyn Iterator<Item = &'a mut u8>` cannot be known at compilation time
  --> $DIR/issue-20605.rs:2:17
   |
LL |     for item in *things { *item = 0 }
   |                 ^^^^^^^ expected an implementor of trait `IntoIterator`
   |
   = note: the trait bound `dyn Iterator<Item = &'a mut u8>: IntoIterator` is not satisfied
   = note: required because of the requirements on the impl of `IntoIterator` for `dyn Iterator<Item = &'a mut u8>`
help: consider mutably borrowing here
   |
LL |     for item in &mut *things { *item = 0 }
   |                 ++++

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.
pretty: trim paths of unique symbols If a symbol name can only be imported from one place for a type, and as long as it was not glob-imported anywhere in the current crate, we can trim its printed path and print only the name. This has wide implications on error messages with types, for example, shortening `std::vec::Vec` to just `Vec`, as long as there is no other `Vec` importable anywhere. This adds a new '-Z trim-diagnostic-paths=false' option to control this feature. On the good path, with no diagnosis printed, we should try to avoid issuing this query, so we need to prevent trimmed_def_paths query on several cases. This change also relies on a previous commit that differentiates between `Debug` and `Display` on various rustc types, where the latter is trimmed and presented to the user and the former is not. 2020-09-02 02:40:56 -05:00			error[E0277]: the size for values of type `dyn Iterator<Item = &'a mut u8>` cannot be known at compilation time
Remove licenses 2018-12-25 09:56:47 -06:00			`--> $DIR/issue-20605.rs:2:17`
Move some `compile-fail` tests to `ui` 2018-07-15 16:11:54 -05:00			`\|`
			`LL \| for item in things { item = 0 }`
better suggestions 2021-09-26 10:30:39 -05:00			\| ^^^^^^^ expected an implementor of trait `IntoIterator`
Move some `compile-fail` tests to `ui` 2018-07-15 16:11:54 -05:00			`\|`
fix(test): update with `&mut` suggestion 2021-09-01 22:39:11 -05:00			= note: the trait bound `dyn Iterator<Item = &'a mut u8>: IntoIterator` is not satisfied
Fix tests from rebase 2020-09-07 04:01:45 -05:00			= note: required because of the requirements on the impl of `IntoIterator` for `dyn Iterator<Item = &'a mut u8>`
better suggestions 2021-09-26 10:30:39 -05:00			`help: consider mutably borrowing here`
			`\|`
			`LL \| for item in &mut things { item = 0 }`
			`\| ++++`
Move some `compile-fail` tests to `ui` 2018-07-15 16:11:54 -05:00
			`error: aborting due to previous error`

			For more information about this error, try `rustc --explain E0277`.