rust/src/test/ui/issues/issue-40510-1.migrate.stderr

warning: captured variable cannot escape `FnMut` closure body
  --> $DIR/issue-40510-1.rs:11:9
   |
LL |     || {
   |      - inferred to be a `FnMut` closure
LL |         &mut x
   |         ^^^^^^ returns a reference to a captured variable which escapes the closure body
   |
   = note: `FnMut` closures only have access to their captured variables while they are executing...
   = note: ...therefore, they cannot allow references to captured variables to escape
   = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
   = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
   = note: for more information, try `rustc --explain E0729`

error: compilation successful
  --> $DIR/issue-40510-1.rs:20:1
   |
LL | fn main() {}
   | ^^^^^^^^^^^^

error: aborting due to previous error
Update output for borrowck=migrate compare mode. This commit updates the test output for the updated NLL compare mode that uses `-Z borrowck=migrate` rather than `-Z borrowck=mir`. The previous commit changes `compiletest` and this commit only updates `.nll.stderr` files. 2018-10-16 22:57:32 +00:00			warning: captured variable cannot escape `FnMut` closure body
Change compare mode to use -Zborrowck=mir 2019-01-27 11:03:21 +00:00			`--> $DIR/issue-40510-1.rs:11:9`
Move some `compile-fail` tests to `ui` 2018-07-15 21:11:54 +00:00			`\|`
Use span of the closure args in free region errors 2018-08-05 13:33:38 +00:00			`LL \| \|\| {`
Improve errors for `FnMut` closures. This commit improves the errors for `FnMut` closures where a reference to a captured variable is escaping. 2018-10-03 23:50:23 +00:00			\| - inferred to be a `FnMut` closure
Use span of the closure args in free region errors 2018-08-05 13:33:38 +00:00			`LL \| &mut x`
Improve message for closure returning a closure. Now when a `FnMut` closure is returning a closure that contains a reference to a captured variable, we provide an error that makes it more clear what is happening. 2018-10-04 19:48:50 +00:00			`\| ^^^^^^ returns a reference to a captured variable which escapes the closure body`
Use span of the closure args in free region errors 2018-08-05 13:33:38 +00:00			`\|`
Improve errors for `FnMut` closures. This commit improves the errors for `FnMut` closures where a reference to a captured variable is escaping. 2018-10-03 23:50:23 +00:00			= note: `FnMut` closures only have access to their captured variables while they are executing...
			`= note: ...therefore, they cannot allow references to captured variables to escape`
Update migrate warning wording. This commit modifies the wording of the warning for backwards-incompatible changes in migrate mode. The warning messages are changed to be lowercase and not include line-breaks in order to be consistent with other compiler diagnostics. 2018-12-21 13:33:15 +00:00			`= warning: this error has been downgraded to a warning for backwards compatibility with previous releases`
			`= warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future`
Add FAQ for NLL migration 2019-05-14 00:09:30 +00:00			= note: for more information, try `rustc --explain E0729`
Update output for borrowck=migrate compare mode. This commit updates the test output for the updated NLL compare mode that uses `-Z borrowck=migrate` rather than `-Z borrowck=mir`. The previous commit changes `compiletest` and this commit only updates `.nll.stderr` files. 2018-10-16 22:57:32 +00:00
Change compare mode to use -Zborrowck=mir 2019-01-27 11:03:21 +00:00			`error: compilation successful`
			`--> $DIR/issue-40510-1.rs:20:1`
			`\|`
			`LL \| fn main() {}`
			`\| ^^^^^^^^^^^^`

			`error: aborting due to previous error`