note: external requirements --> $DIR/ty-param-closure-outlives-from-where-clause.rs:27:26 | LL | with_signature(a, b, |x, y| { | ^^^^^^ | = note: defining type: no_region::::{closure#0} with closure args [ i32, extern "rust-call" fn((std::cell::Cell<&'?1 ()>, T)), (), ] = note: late-bound region is '?2 = note: number of external vids: 3 = note: where T: '?1 note: no external requirements --> $DIR/ty-param-closure-outlives-from-where-clause.rs:26:1 | LL | fn no_region<'a, T>(a: Cell<&'a ()>, b: T) { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: defining type: no_region:: error[E0309]: the parameter type `T` may not live long enough --> $DIR/ty-param-closure-outlives-from-where-clause.rs:32:9 | LL | fn no_region<'a, T>(a: Cell<&'a ()>, b: T) { | -- the parameter type `T` must be valid for the lifetime `'a` as defined here... ... LL | require(&x, &y) | ^^^^^^^^^^^^^^^ ...so that the type `T` will meet its required lifetime bounds | help: consider adding an explicit lifetime bound | LL | fn no_region<'a, T: 'a>(a: Cell<&'a ()>, b: T) { | ++++ note: external requirements --> $DIR/ty-param-closure-outlives-from-where-clause.rs:42:26 | LL | with_signature(a, b, |x, y| { | ^^^^^^ | = note: defining type: correct_region::<'?1, T>::{closure#0} with closure args [ i32, extern "rust-call" fn((std::cell::Cell<&'?2 ()>, T)), (), ] = note: number of external vids: 3 = note: where T: '?2 note: no external requirements --> $DIR/ty-param-closure-outlives-from-where-clause.rs:38:1 | LL | / fn correct_region<'a, T>(a: Cell<&'a ()>, b: T) LL | | where LL | | T: 'a, | |__________^ | = note: defining type: correct_region::<'?1, T> note: external requirements --> $DIR/ty-param-closure-outlives-from-where-clause.rs:63:26 | LL | with_signature(a, b, |x, y| { | ^^^^^^ | = note: defining type: wrong_region::<'?1, T>::{closure#0} with closure args [ i32, extern "rust-call" fn((std::cell::Cell<&'?2 ()>, T)), (), ] = note: late-bound region is '?3 = note: number of external vids: 4 = note: where T: '?2 note: no external requirements --> $DIR/ty-param-closure-outlives-from-where-clause.rs:59:1 | LL | / fn wrong_region<'a, 'b, T>(a: Cell<&'a ()>, b: T) LL | | where LL | | T: 'b, | |__________^ | = note: defining type: wrong_region::<'?1, T> error[E0309]: the parameter type `T` may not live long enough --> $DIR/ty-param-closure-outlives-from-where-clause.rs:65:9 | LL | fn wrong_region<'a, 'b, T>(a: Cell<&'a ()>, b: T) | -- the parameter type `T` must be valid for the lifetime `'a` as defined here... ... LL | require(&x, &y) | ^^^^^^^^^^^^^^^ ...so that the type `T` will meet its required lifetime bounds | help: consider adding an explicit lifetime bound | LL | T: 'b + 'a, | ++++ note: external requirements --> $DIR/ty-param-closure-outlives-from-where-clause.rs:76:26 | LL | with_signature(a, b, |x, y| { | ^^^^^^ | = note: defining type: outlives_region::<'?1, '?2, T>::{closure#0} with closure args [ i32, extern "rust-call" fn((std::cell::Cell<&'?3 ()>, T)), (), ] = note: number of external vids: 4 = note: where T: '?3 note: no external requirements --> $DIR/ty-param-closure-outlives-from-where-clause.rs:71:1 | LL | / fn outlives_region<'a, 'b, T>(a: Cell<&'a ()>, b: T) LL | | where LL | | T: 'b, LL | | 'b: 'a, | |___________^ | = note: defining type: outlives_region::<'?1, '?2, T> error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0309`.