src/test/ui/feature-gates/feature-gate-no_core.stderr

   1 error[E0658]: no_core is experimental
   2   --> $DIR/feature-gate-no_core.rs:3:1
   3    |
   4 LL | #![no_core]
   5    | ^^^^^^^^^^^
   6    |
   7    = note: for more information, see https://github.com/rust-lang/rust/issues/29639
   8    = help: add #![feature(no_core)] to the crate attributes to enable
   9
  10 error: aborting due to previous error
  11
  12 For more information about this error, try `rustc --explain E0658`.