1 warning: extern declarations without an explicit ABI are deprecated
2 --> $DIR/cli-lint-override.rs:12:1
4 LL | extern fn foo() {}
5 | ^^^^^^^^^^^^^^^ ABI should be specified here
7 = note: requested on the command line with `--force-warn missing-abi`
8 = help: the default ABI is C
10 warning: 1 warning emitted