error[E0453]: allow(deprecated) overruled by outer forbid(deprecated)
  --> $DIR/lint-forbid-attr.rs:13:9
   |
11 | #![forbid(deprecated)]
   |           ---------- `forbid` level set here
12 | 
13 | #[allow(deprecated)]
   |         ^^^^^^^^^^ overruled by previous forbid

error: aborting due to previous error

If you want more information on this error, try using "rustc --explain E0453"