1 error: implementation of `FnOnce` is not general enough
2 --> $DIR/issue-79187.rs:5:5
5 | ^^^^^ implementation of `FnOnce` is not general enough
7 = note: closure with signature `fn(&'2 u32)` must implement `FnOnce<(&'1 u32,)>`, for any lifetime `'1`...
8 = note: ...but it actually implements `FnOnce<(&'2 u32,)>`, for some specific lifetime `'2`
10 error: aborting due to previous error