error[E0308]: mismatched types --> $DIR/attribute-spans-preserved.rs:7:23 | LL | #[ foo ( let y: u32 = "z"; ) ] | --- ^^^ expected `u32`, found `&str` | | | expected due to this error[E0308]: mismatched types --> $DIR/attribute-spans-preserved.rs:8:23 | LL | #[ bar { let x: u32 = "y"; } ] | --- ^^^ expected `u32`, found `&str` | | | expected due to this error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0308`.