ICE: suggestion must not have overlapping parts `E0599`

Code

enum U {
    B(isize, usize),
}

fn main() {
    let x = T::A(U::C);
}

Meta

rustc --version --verbose:

rustc 1.83.0-nightly (9b72238eb 2024-09-14)
binary: rustc
commit-hash: 9b72238eb813e9d06e9e9d270168512fbffd7ee7
commit-date: 2024-09-14
host: x86_64-unknown-linux-gnu
release: 1.83.0-nightly
LLVM version: 19.1.0

Error output

error[E0433]: failed to resolve: use of undeclared type `T`
 --> k.rs:6:13
  |
6 |     let x = T::A(U::C);
  |             ^
  |             |
  |             use of undeclared type `T`
  |             help: an enum with a similar name exists: `U`

error[E0599]: no variant or associated item named `C` found for enum `U` in the current scope
 --> k.rs:6:21
  |
1 | enum U {
  | ------ variant or associated item `C` not found for this enum
...
6 |     let x = T::A(U::C);
  |                     ^ variant or associated item not found in `U`
  |
help: there is a variant with a similar name
  |
6 |     let x = T::A(/* isize */, /* usize */B);
  |                  ~~~~~~~~~~~~~~~~~~~~~~~~

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0433, E0599.
For more information about an error, try `rustc --explain E0433`.

Start by reproducing the minimal Rust example from the issue with the reported nightly compiler and inspect the E0599 diagnostic suggestion output. Trace the compiler's suggestion generation for the missing enum variant; done means the suggestion no longer contains overlapping parts and a regression test covers this example.