error[E0283]: type annotations required: cannot resolve `T0: Trait0<'l0>` --> $DIR/issue-24424.rs:14:1 | LL | impl <'l0, 'l1, T0> Trait1<'l0, T0> for bool where T0 : Trait0<'l0>, T0 : Trait0<'l1> {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: required by `Trait0` --> $DIR/issue-24424.rs:12:1 | LL | trait Trait0<'l0> {} | ^^^^^^^^^^^^^^^^^ error: aborting due to previous error For more information about this error, try `rustc --explain E0283`.