1 error[E0597]: `b` does not live long enough
2 --> $DIR/var-appears-twice.rs:20:38
5 | - binding `b` declared here
7 LL | let x: DoubleCell<_> = make_cell(&b);
8 | ------------- ^^ borrowed value does not live long enough
10 | type annotation requires that `b` is borrowed for `'static`
13 | - `b` dropped here while still borrowed
15 error: aborting due to previous error
17 For more information about this error, try `rustc --explain E0597`.