rust/tests/ui/typeck/issue-57404.stderr

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error[E0277]: `&mut ()` is not a tuple
--> $DIR/issue-57404.rs:6:41
|
LL | handlers.unwrap().as_mut().call_mut(&mut ());
| -------- ^^^^^^^ the trait `Tuple` is not implemented for `&mut ()`
| |
| required by a bound introduced by this call
|
note: required by a bound in `call_mut`
--> $SRC_DIR/core/src/ops/function.rs:LL:COL
help: consider removing the leading `&`-reference
|
LL - handlers.unwrap().as_mut().call_mut(&mut ());
LL + handlers.unwrap().as_mut().call_mut(());
|
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0277`.