1 #![feature(foo_bar_baz, foo(bar), foo = "baz", foo)]
2 //~^ ERROR malformed `feature`
3 //~| ERROR malformed `feature`
5 #![feature] //~ ERROR malformed `feature` attribute
6 #![feature = "foo"] //~ ERROR malformed `feature` attribute
8 #![feature(test_removed_feature)] //~ ERROR: feature has been removed