error[E0601]: `main` function not found in crate `imported_main_const_forbidden`
  --> $DIR/imported_main_const_forbidden.rs:1:1
   |
LL | / #![feature(imported_main)]
LL | |
LL | | pub mod foo {
LL | |     pub const BAR: usize = 42;
LL | | }
LL | |
LL | | use foo::BAR as main;
   | |_____----------------^ consider adding a `main` function to `$DIR/imported_main_const_forbidden.rs`
   |       |
   |       non-function item at `crate::main` is found

error: aborting due to previous error

For more information about this error, try `rustc --explain E0601`.