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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
// compile-flags -Wrust-2021-incompatible-closure-captures
#![warn(rust_2021_incompatible_closure_captures)]

fn main() {}

Expand All @@ -9,7 +9,7 @@ impl Numberer {
//~^ ERROR `async fn` is not permitted in Rust 2015
interval: Duration,
//~^ ERROR cannot find type `Duration` in this scope
) -> Numberer {
) -> Numberer { //~WARN: changes to closure capture in Rust 2021
Numberer {}
}
}
Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,32 @@ help: consider importing this struct
LL + use std::time::Duration;
|

error: aborting due to 2 previous errors
warning: changes to closure capture in Rust 2021 will affect drop order
--> $DIR/drop-location-span-error-rust-2021-incompatible-closure-captures-96258.rs:12:19
|
LL | interval: Duration,
| -------- in Rust 2018, this causes the closure to capture `interval`, but in Rust 2021, it has no effect
LL |
LL | ) -> Numberer {
| _________________-_^
| | |
| | in Rust 2018, `interval` is dropped here along with the closure, but in Rust 2021 `interval` is not part of the closure
LL | | Numberer {}
LL | | }
| |_____^
|
= note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/disjoint-capture-in-closures.html>
note: the lint level is defined here
--> $DIR/drop-location-span-error-rust-2021-incompatible-closure-captures-96258.rs:1:9
|
LL | #![warn(rust_2021_incompatible_closure_captures)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
help: add a dummy let to cause `interval` to be fully captured
|
LL | ) -> Numberer { let _ = &interval;
| ++++++++++++++++++

error: aborting due to 2 previous errors; 1 warning emitted

Some errors have detailed explanations: E0412, E0670.
For more information about an error, try `rustc --explain E0412`.