error[E0452]: malformed lint attribute
  --> $DIR/lint-malformed.rs:2:10
   |
LL | #![allow(bar = "baz")]
   |          ^^^^^^^^^^^

error: attribute must be of the form `#[deny(lint1, lint2, ..., /*opt*/ reason = "...")]`
  --> $DIR/lint-malformed.rs:1:1
   |
LL | #![deny = "foo"]
   | ^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0452`.