error[E0710]: an unknown tool name found in scoped lint: `foo::bar`
  --> $DIR/unknown-lint-tool-name.rs:1:9
   |
LL | #![deny(foo::bar)]
   |         ^^^

error[E0710]: an unknown tool name found in scoped lint: `foo::bar`
  --> $DIR/unknown-lint-tool-name.rs:3:9
   |
LL | #[allow(foo::bar)]
   |         ^^^

error: aborting due to 2 previous errors