error: implementing `LintPass` by hand
  --> $DIR/lint_pass_impl_without_macro.rs:20:6
   |
LL | impl LintPass for Foo {
   |      ^^^^^^^^
   |
   = help: try using `declare_lint_pass!` or `impl_lint_pass!` instead
note: the lint level is defined here
  --> $DIR/lint_pass_impl_without_macro.rs:4:9
   |
LL | #![deny(rustc::lint_pass_impl_without_macro)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: implementing `LintPass` by hand
  --> $DIR/lint_pass_impl_without_macro.rs:30:14
   |
LL |         impl LintPass for Custom {
   |              ^^^^^^^^
...
LL | custom_lint_pass_macro!();
   | ------------------------- in this macro invocation
   |
   = help: try using `declare_lint_pass!` or `impl_lint_pass!` instead
   = note: this error originates in the macro `custom_lint_pass_macro` (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 2 previous errors