error: `crate_type` requires a value
  --> $DIR/invalid_crate_type_syntax.rs:12:1
   |
LL | #![crate_type(lib)]  //~ ERROR `crate_type` requires a value
   | ^^^^^^^^^^^^^^^^^^^
   |
   = note: for example: `#![crate_type="lib"]`

error: aborting due to previous error