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| author | Nell Shamrell <nellshamrell@gmail.com> | 2020-06-18 10:30:47 -0700 |
|---|---|---|
| committer | Nell Shamrell <nellshamrell@gmail.com> | 2020-06-25 16:01:45 -0700 |
| commit | 5e28eb580ff48a84fe6f49bff31c4c022f243ac9 (patch) | |
| tree | 4f2722dbe8db97973ec8e71583c4918bddbc75c2 /src/libcore | |
| parent | 50fc24d8a172a853b5dfe40702d6550e3b8562ba (diff) | |
| download | rust-5e28eb580ff48a84fe6f49bff31c4c022f243ac9.tar.gz rust-5e28eb580ff48a84fe6f49bff31c4c022f243ac9.zip | |
Adds a clearer message for when the async keyword is missing from a function
Signed-off-by: Nell Shamrell <nellshamrell@gmail.com>
Diffstat (limited to 'src/libcore')
| -rw-r--r-- | src/libcore/future/future.rs | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libcore/future/future.rs b/src/libcore/future/future.rs index 00a171e6b5f..abf461338d8 100644 --- a/src/libcore/future/future.rs +++ b/src/libcore/future/future.rs @@ -27,6 +27,7 @@ use crate::task::{Context, Poll}; #[must_use = "futures do nothing unless you `.await` or poll them"] #[stable(feature = "futures_api", since = "1.36.0")] #[lang = "future_trait"] +#[rustc_on_unimplemented(label = "`{Self}` is not a future", message = "`{Self}` is not a future")] pub trait Future { /// The type of value produced on completion. #[stable(feature = "futures_api", since = "1.36.0")] |