error: parenthesized lifetime bounds are not supported --> $DIR/trait-object-lifetime-parens.rs:5:21 | LL | fn f<'a, T: Trait + ('a)>() {} | ^^^^ | help: remove the parentheses | LL - fn f<'a, T: Trait + ('a)>() {} LL + fn f<'a, T: Trait + 'a>() {} | error: parenthesized lifetime bounds are not supported --> $DIR/trait-object-lifetime-parens.rs:8:24 | LL | let _: Box; | ^^^^ | help: remove the parentheses | LL - let _: Box; LL + let _: Box; | error: lifetime in trait object type must be followed by `+` --> $DIR/trait-object-lifetime-parens.rs:10:17 | LL | let _: Box<('a) + Trait>; | ^^ error: aborting due to 3 previous errors