error[E0469]: imported macro not found
  --> $DIR/invalid-macro-use.rs:51:13
   |
LL | #[macro_use(a)]
   |             ^

error[E0469]: imported macro not found
  --> $DIR/invalid-macro-use.rs:53:13
   |
LL | #[macro_use(b)]
   |             ^

error: valid forms for the attribute are `#[macro_use(name1, name2, ...)]` and `#[macro_use]`
  --> $DIR/invalid-macro-use.rs:4:1
   |
LL | #[macro_use = 5]
   | ^^^^^^^^^^^^^^^^

error[E0539]: malformed `macro_use` attribute input
  --> $DIR/invalid-macro-use.rs:8:1
   |
LL | #[macro_use(5)]
   | ^^^^^^^^^^^^-^^
   |             |
   |             expected a valid identifier here
   |
   = note: for more information, visit <https://doc.rust-lang.org/reference/macros-by-example.html#the-macro_use-attribute>
help: try changing it to one of the following valid forms of the attribute
   |
LL - #[macro_use(5)]
LL + #[macro_use(name1, name2, ...)]
   |
LL - #[macro_use(5)]
LL + #[macro_use]
   |

error[E0565]: malformed `macro_use` attribute input
  --> $DIR/invalid-macro-use.rs:14:1
   |
LL | #[macro_use(a = "b")]
   | ^^^^^^^^^^^^^^-----^^
   |               |
   |               didn't expect any arguments here
   |
   = note: for more information, visit <https://doc.rust-lang.org/reference/macros-by-example.html#the-macro_use-attribute>
help: try changing it to one of the following valid forms of the attribute
   |
LL - #[macro_use(a = "b")]
LL + #[macro_use(name1, name2, ...)]
   |
LL - #[macro_use(a = "b")]
LL + #[macro_use]
   |

error[E0565]: malformed `macro_use` attribute input
  --> $DIR/invalid-macro-use.rs:20:1
   |
LL | #[macro_use(a(b))]
   | ^^^^^^^^^^^^^---^^
   |              |
   |              didn't expect any arguments here
   |
   = note: for more information, visit <https://doc.rust-lang.org/reference/macros-by-example.html#the-macro_use-attribute>
help: try changing it to one of the following valid forms of the attribute
   |
LL - #[macro_use(a(b))]
LL + #[macro_use(name1, name2, ...)]
   |
LL - #[macro_use(a(b))]
LL + #[macro_use]
   |

error[E0539]: malformed `macro_use` attribute input
  --> $DIR/invalid-macro-use.rs:26:1
   |
LL | #[macro_use(a::b)]
   | ^^^^^^^^^^^^----^^
   |             |
   |             expected a valid identifier here
   |
   = note: for more information, visit <https://doc.rust-lang.org/reference/macros-by-example.html#the-macro_use-attribute>
help: try changing it to one of the following valid forms of the attribute
   |
LL - #[macro_use(a::b)]
LL + #[macro_use(name1, name2, ...)]
   |
LL - #[macro_use(a::b)]
LL + #[macro_use]
   |

error: unused attribute
  --> $DIR/invalid-macro-use.rs:32:1
   |
LL | #[macro_use(a)]
   | ^^^^^^^^^^^^^^^ help: remove this attribute
   |
note: attribute also specified here
  --> $DIR/invalid-macro-use.rs:34:1
   |
LL | #[macro_use]
   | ^^^^^^^^^^^^
note: the lint level is defined here
  --> $DIR/invalid-macro-use.rs:1:9
   |
LL | #![deny(unused_attributes)]
   |         ^^^^^^^^^^^^^^^^^

error: unused attribute
  --> $DIR/invalid-macro-use.rs:40:1
   |
LL | #[macro_use(a)]
   | ^^^^^^^^^^^^^^^ help: remove this attribute
   |
note: attribute also specified here
  --> $DIR/invalid-macro-use.rs:38:1
   |
LL | #[macro_use]
   | ^^^^^^^^^^^^

error: unused attribute
  --> $DIR/invalid-macro-use.rs:46:1
   |
LL | #[macro_use]
   | ^^^^^^^^^^^^ help: remove this attribute
   |
note: attribute also specified here
  --> $DIR/invalid-macro-use.rs:44:1
   |
LL | #[macro_use]
   | ^^^^^^^^^^^^

error: aborting due to 10 previous errors

Some errors have detailed explanations: E0469, E0539, E0565.
For more information about an error, try `rustc --explain E0469`.