1 error: implementation of `Stream` is not general enough
2 --> $DIR/issue-30786.rs:108:22
4 LL | / pub trait Stream {
6 LL | | fn next(self) -> Option<Self::Item>;
8 | |_- trait `Stream` defined here
10 LL | let map = source.map(|x: &_| x);
11 | ^^^ implementation of `Stream` is not general enough
13 = note: `Stream` would have to be implemented for the type `&'0 mut Map<Repeat, [closure@$DIR/issue-30786.rs:108:26: 108:35]>`, for any lifetime `'0`...
14 = note: ...but `Stream` is actually implemented for the type `&'1 mut Map<Repeat, [closure@$DIR/issue-30786.rs:108:26: 108:35]>`, for some specific lifetime `'1`
16 error: aborting due to previous error