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| author | Tyler Mandry <tmandry@gmail.com> | 2018-03-21 23:28:48 -0500 |
|---|---|---|
| committer | Tyler Mandry <tmandry@gmail.com> | 2018-03-21 23:28:48 -0500 |
| commit | 2b13d95da02d318c12814261dd36edd91ae6879e (patch) | |
| tree | 496531b2071968ef08cd59a8d756a8a2a2206100 /src/libstd | |
| parent | b6934c91b23517c4e17d8016b6c46ffd0703eded (diff) | |
| download | rust-2b13d95da02d318c12814261dd36edd91ae6879e.tar.gz rust-2b13d95da02d318c12814261dd36edd91ae6879e.zip | |
termination_trait: Make error message more helpful
Diffstat (limited to 'src/libstd')
| -rw-r--r-- | src/libstd/process.rs | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/libstd/process.rs b/src/libstd/process.rs index d5ac2d19e83..c877bf6aa35 100644 --- a/src/libstd/process.rs +++ b/src/libstd/process.rs @@ -1442,8 +1442,9 @@ pub fn id() -> u32 { /// a successful execution. In case of a failure, `libc::EXIT_FAILURE` is returned. #[cfg_attr(not(test), lang = "termination")] #[unstable(feature = "termination_trait_lib", issue = "43301")] -#[rustc_on_unimplemented = - "`main` can only return types that implement {Termination}, not `{Self}`"] +#[rustc_on_unimplemented( + message="`main` has invalid return type `{Self}`", + label="`main` can only return types that implement {Termination}")] pub trait Termination { /// Is called to get the representation of the value as status code. /// This status code is returned to the operating system. |