error[E0452]: malformed lint attribute input --> $DIR/E0452.rs:1:10 | LL | #![allow(foo = "")] | ^^^^^^^^ bad attribute argument error[E0452]: malformed lint attribute input --> $DIR/E0452.rs:1:10 | LL | #![allow(foo = "")] | ^^^^^^^^ bad attribute argument error[E0452]: malformed lint attribute input --> $DIR/E0452.rs:1:10 | LL | #![allow(foo = "")] | ^^^^^^^^ bad attribute argument error[E0452]: malformed lint attribute input --> $DIR/E0452.rs:1:10 | LL | #![allow(foo = "")] | ^^^^^^^^ bad attribute argument error: aborting due to 4 previous errors For more information about this error, try `rustc --explain E0452`.