| error[E0282]: type annotations needed | |
| --> $DIR/obligation-with-leaking-placeholders.rs:18:16 | |
| | | |
| LL | needs_foo(|x| { | |
| | ^ | |
| ... | |
| LL | x.to_string(); | |
| | - type must be known at this point | |
| | | |
| help: consider giving this closure parameter an explicit type | |
| | | |
| LL | needs_foo(|x: /* Type */| { | |
| | ++++++++++++ | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0282`. |