error[E0254]: the name `alloc` is defined multiple times --> $DIR/E0254.rs:11:5 | LL | extern crate alloc; | ------------------- previous import of the extern crate `alloc` here ... LL | use foo::alloc; | ^^^^^^^^^^ `alloc` reimported here | = note: `alloc` must be defined only once in the type namespace of this module help: you can use `as` to change the binding name of the import | LL | use foo::alloc as other_alloc; | ~~~~~~~~~~~~~~~~~~~~~~~~~ error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0254`.