error: cannot find macro panic in this scope

[phlopsi]

I tried this code:

#![no_implicit_prelude]

fn main() {
    ::std::todo!();
    ::std::unimplemented!();
}

(Playground)

I expected to see this happen:
Successful compilation

Instead, this happened:

   Compiling playground v0.0.1 (/playground)
error: cannot find macro `panic` in this scope
 --> src/main.rs:4:5
  |
4 |     ::std::todo!();
  |     ^^^^^^^^^^^^^^^
  |
  = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find macro `panic` in this scope
 --> src/main.rs:5:5
  |
5 |     ::std::unimplemented!();
  |     ^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 2 previous errors

error: could not compile `playground`.

To learn more, run the command again with --verbose.

Meta

rustc --version --verbose Playground Stable Version:

1.47.0

The macros should be using $crate::panic!, instead of panic!.