| error[E0478]: lifetime bound not satisfied | 
 |   --> $DIR/lifetime-not-long-enough-suggestion-regression-test-124563.rs:19:5 | 
 |    | | 
 | LL |     type Bar = BarImpl<'a, 'b, T>; | 
 |    |     ^^^^^^^^ | 
 |    | | 
 | note: lifetime parameter instantiated with the lifetime `'a` as defined here | 
 |   --> $DIR/lifetime-not-long-enough-suggestion-regression-test-124563.rs:14:6 | 
 |    | | 
 | LL | impl<'a, 'b, T> Foo for FooImpl<'a, 'b, T> | 
 |    |      ^^ | 
 | note: but lifetime parameter must outlive the lifetime `'b` as defined here | 
 |   --> $DIR/lifetime-not-long-enough-suggestion-regression-test-124563.rs:14:10 | 
 |    | | 
 | LL | impl<'a, 'b, T> Foo for FooImpl<'a, 'b, T> | 
 |    |          ^^ | 
 |  | 
 | error: lifetime may not live long enough | 
 |   --> $DIR/lifetime-not-long-enough-suggestion-regression-test-124563.rs:23:21 | 
 |    | | 
 | LL |         self.enter_scope(|ctx| { | 
 |    |                           --- | 
 |    |                           | | 
 |    |                           has type `&'1 mut FooImpl<'_, '_, T>` | 
 |    |                           has type `&mut FooImpl<'2, '_, T>` | 
 | LL |             BarImpl(ctx); | 
 |    |                     ^^^ this usage requires that `'1` must outlive `'2` | 
 |    | | 
 |    = note: requirement occurs because of a mutable reference to `FooImpl<'_, '_, T>` | 
 |    = note: mutable references are invariant over their type parameter | 
 |    = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance | 
 |  | 
 | error: lifetime may not live long enough | 
 |   --> $DIR/lifetime-not-long-enough-suggestion-regression-test-124563.rs:22:9 | 
 |    | | 
 | LL |   impl<'a, 'b, T> Foo for FooImpl<'a, 'b, T> | 
 |    |        --  -- lifetime `'b` defined here | 
 |    |        | | 
 |    |        lifetime `'a` defined here | 
 | ... | 
 | LL | /         self.enter_scope(|ctx| { | 
 | LL | |             BarImpl(ctx); | 
 | LL | |         }); | 
 |    | |__________^ argument requires that `'a` must outlive `'b` | 
 |    | | 
 |    = help: consider adding the following bound: `'a: 'b` | 
 |    = note: requirement occurs because of a mutable reference to `FooImpl<'_, '_, T>` | 
 |    = note: mutable references are invariant over their type parameter | 
 |    = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance | 
 |  | 
 | error: aborting due to 3 previous errors | 
 |  | 
 | For more information about this error, try `rustc --explain E0478`. |