`::core::assert!` in `#![no_implicit_prelude]` fails to compile because it calls `panic!` instead of `::core::panic!`

[KSXGitHub]

I tried this code:

#![no_implicit_prelude]

fn main() {
    ::core::assert!(false, "wow");
}

playground.

I expected to see this happen: It panics at runtime.

Instead, this happened: It fails to compile.

error: cannot find macro `panic` in this scope
 --> src/main.rs:4:5
  |
4 |     ::core::assert!(false, "wow");
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: consider importing one of these items:
          core::panic
          pin_utils::core_reexport::panic
          std::panic
  = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

Meta

rustc --version --verbose:

rustc 1.51.0 (2fd73fabe 2021-03-23)
binary: rustc
commit-hash: 2fd73fabe469357a12c2c974c140f67e7cdd76d0
commit-date: 2021-03-23
host: x86_64-unknown-linux-gnu
release: 1.51.0
LLVM version: 11.0.1

[syvb]

This is a known issue that will be fixed in Rust 2021: #78343 (comment)

[camelid]

Looks like it's fixed now that Rust 2021 is stable.