1 error: expected one of `,`, `:`, `=`, or `>`, found `;`
2 --> $DIR/lifetime-semicolon.rs:7:31
4 LL | fn foo<'a, 'b>(_x: &mut Foo<'a; 'b>) {}
5 | ^ expected one of `,`, `:`, `=`, or `>`
7 help: use a comma to separate type parameters
9 LL | fn foo<'a, 'b>(_x: &mut Foo<'a, 'b>) {}
12 error: aborting due to previous error