error: malformed `coverage` attribute input
  --> $DIR/bad-syntax.rs:23:1
   |
LL | #[coverage = true]
   | ^^^^^^^^^^^^^^^^^^
   |
help: the following are the possible correct uses
   |
LL | #[coverage(on|off)]
   |
LL | #[coverage]
   |

error: expected identifier, found `,`
  --> $DIR/bad-syntax.rs:52:12
   |
LL | #[coverage(,off)]
   |            ^
   |            |
   |            expected identifier
   |            help: remove this comma

error: expected `coverage(off)` or `coverage(on)`
  --> $DIR/bad-syntax.rs:18:1
   |
LL | #[coverage]
   | ^^^^^^^^^^^

error: expected `coverage(off)` or `coverage(on)`
  --> $DIR/bad-syntax.rs:23:1
   |
LL | #[coverage = true]
   | ^^^^^^^^^^^^^^^^^^

error: expected `coverage(off)` or `coverage(on)`
  --> $DIR/bad-syntax.rs:30:1
   |
LL | #[coverage()]
   | ^^^^^^^^^^^^^

error: expected `coverage(off)` or `coverage(on)`
  --> $DIR/bad-syntax.rs:33:1
   |
LL | #[coverage(off, off)]
   | ^^^^^^^^^^^^^^^^^^^^^

error: expected `coverage(off)` or `coverage(on)`
  --> $DIR/bad-syntax.rs:36:1
   |
LL | #[coverage(off, on)]
   | ^^^^^^^^^^^^^^^^^^^^

error: expected `coverage(off)` or `coverage(on)`
  --> $DIR/bad-syntax.rs:39:1
   |
LL | #[coverage(bogus)]
   | ^^^^^^^^^^^^^^^^^^

error: expected `coverage(off)` or `coverage(on)`
  --> $DIR/bad-syntax.rs:42:1
   |
LL | #[coverage(bogus, off)]
   | ^^^^^^^^^^^^^^^^^^^^^^^

error: expected `coverage(off)` or `coverage(on)`
  --> $DIR/bad-syntax.rs:45:1
   |
LL | #[coverage(off, bogus)]
   | ^^^^^^^^^^^^^^^^^^^^^^^

error: expected `coverage(off)` or `coverage(on)`
  --> $DIR/bad-syntax.rs:52:1
   |
LL | #[coverage(,off)]
   | ^^^^^^^^^^^^^^^^^

error: aborting due to 11 previous errors