warning: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
  --> $DIR/suggestions-not-always-applicable.rs:17:5
   |
LL |     #[foo] //~ WARN: absolute paths must start with
   |     ^^^^^^
   |
note: lint level defined here
  --> $DIR/suggestions-not-always-applicable.rs:8:9
   |
LL | #![warn(rust_2018_compatibility)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^
   = note: #[warn(absolute_paths_not_starting_with_crate)] implied by #[warn(rust_2018_compatibility)]
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
   = note: for more information, see issue #53130 <https://github.com/rust-lang/rust/issues/53130>

warning: absolute paths must start with `self`, `super`, `crate`, or an external crate name in the 2018 edition
  --> $DIR/suggestions-not-always-applicable.rs:17:5
   |
LL |     #[foo] //~ WARN: absolute paths must start with
   |     ^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
   = note: for more information, see issue #53130 <https://github.com/rust-lang/rust/issues/53130>