error[E0658]: msp430-interrupt ABI is experimental and subject to change
  --> $DIR/feature-gate-abi-msp430-interrupt.rs:4:1
   |
LL | extern "msp430-interrupt" fn foo() {}
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: for more information, see https://github.com/rust-lang/rust/issues/38487
   = help: add `#![feature(abi_msp430_interrupt)]` to the crate attributes to enable

error: aborting due to previous error

For more information about this error, try `rustc --explain E0658`.