| error: implementation of `FnOnce` is not general enough | |
| --> $DIR/issue-30906.rs:18:5 | |
| | | |
| LL | test(Compose(f, |_| {})); | |
| | ^^^^^^^^^^^^^^^^^^^^^^^^ implementation of `FnOnce` is not general enough | |
| | | |
| = note: `fn(&'2 str) -> T` must implement `FnOnce<(&'1 str,)>`, for any lifetime `'1`... | |
| = note: ...but it actually implements `FnOnce<(&'2 str,)>`, for some specific lifetime `'2` | |
| error: aborting due to 1 previous error | |