ICE when useing macro defined in standard library #53512
Description
On nightly 1.30.0-nightly (33b923fd4 2018-08-18):
If you try to compile
use std::assert; fn main() { assert!(true); }you get
error[E0432]: unresolved import `std::assert` --> src/main.rs:1:5 | 1 | use std::assert; | ^^^^^^^^^^^ no `assert` in the root thread 'main' panicked at 'librustc_resolve/macros.rs:909: inconsistent resolution for a macro', librustc/util/bug.rs:47:26 note: Run with `RUST_BACKTRACE=1` for a backtrace. error: aborting due to previous error For more information about this error, try `rustc --explain E0432`. error: internal compiler error: unexpected panic note: the compiler unexpectedly panicked. this is a bug. note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports note: rustc 1.30.0-nightly (33b923fd4 2018-08-18) running on x86_64-unknown-linux-gnu note: compiler flags: -C codegen-units=1 -C debuginfo=2 --crate-type bin note: some of the compiler flags provided by cargo are hidden error: Could not compile `playground`. To learn more, run the command again with --verbose. On playground: https://play.rust-lang.org/?gist=5f24c022a2d8fd3f2256a88a6c92e8a1&version=nightly&mode=debug&edition=2015