error: `#[macro_use]` attribute cannot be used on macro defs
  --> $DIR/unused-attr-macro-rules.rs:7:1
   |
LL | #[macro_use]
   | ^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[macro_use]` can be applied to modules, extern crates, and crates
note: the lint level is defined here
  --> $DIR/unused-attr-macro-rules.rs:1:9
   |
LL | #![deny(unused_attributes)]
   |         ^^^^^^^^^^^^^^^^^

error: `#[path]` attribute cannot be used on macro defs
  --> $DIR/unused-attr-macro-rules.rs:9:1
   |
LL | #[path="foo"]
   | ^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[path]` can only be applied to modules

error: crate-level attribute should be an inner attribute: add an exclamation mark: `#![recursion_limit]`
  --> $DIR/unused-attr-macro-rules.rs:11:1
   |
LL | #[recursion_limit="1"]
   | ^^^^^^^^^^^^^^^^^^^^^^
   |
note: This attribute does not have an `!`, which means it is applied to this macro def
  --> $DIR/unused-attr-macro-rules.rs:12:1
   |
LL | / macro_rules! foo {
LL | |     () => {};
LL | | }
   | |_^

error: aborting due to 3 previous errors