E0545, // incorrect 'issue'
E0546, // missing 'feature'
E0547, // missing 'issue'
- E0548, // incorrect stability attribute type
+// E0548, // replaced with a generic attribute input check
E0549, // rustc_deprecated attribute must be paired with either stable or unstable attribute
E0550, // multiple deprecated attributes
E0551, // incorrect meta item
E0553, // multiple rustc_const_unstable attributes
- E0555, // malformed feature attribute, expected #![feature(...)]
+// E0555, // replaced with a generic attribute input check
E0556, // malformed feature, expected just one word
E0584, // file for module `..` found at both .. and ..
E0629, // missing 'feature' (rustc_const_unstable)