error[E0433]: failed to resolve: use of undeclared type or module `foo`
--> $DIR/unknown-tool-name.rs:1:3
|
-LL | #[foo::bar] //~ ERROR failed to resolve: use of undeclared type or module `foo`
+LL | #[foo::bar]
| ^^^ use of undeclared type or module `foo`
error: aborting due to previous error