error[E0261]: use of undeclared lifetime name `'b` --> $DIR/undeclared-lifetime-used-in-debug-macro-issue-70152.rs:3:9 | LL | struct Test { | - help: consider introducing lifetime `'b` here: `<'b>` LL | a: &'b str, | ^^ undeclared lifetime error[E0261]: use of undeclared lifetime name `'b` --> $DIR/undeclared-lifetime-used-in-debug-macro-issue-70152.rs:3:9 | LL | #[derive(Eq, PartialEq)] | -- lifetime `'b` is missing in item created through this procedural macro LL | struct Test { | - help: consider introducing lifetime `'b` here: `<'b>` LL | a: &'b str, | ^^ undeclared lifetime error[E0261]: use of undeclared lifetime name `'b` --> $DIR/undeclared-lifetime-used-in-debug-macro-issue-70152.rs:13:13 | LL | fn foo(&'b self) {} | ^^ undeclared lifetime | help: consider introducing lifetime `'b` here | LL | fn foo<'b>(&'b self) {} | ++++ help: consider introducing lifetime `'b` here | LL | impl<'b> T for Test { | ++++ error: aborting due to 3 previous errors For more information about this error, try `rustc --explain E0261`.