error[E0658]: using an imported function as entry point `main` is experimental --> $DIR/feature-gate-imported_main.rs:6:5 | LL | use foo::bar as main; | ^^^^^^^^^^^^^^^^ | = note: see issue #28937 for more information = help: add `#![feature(imported_main)]` to the crate attributes to enable error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0658`.