unreachable code: Failed to find trait impl during monomorphization

[jfecher]

Aim

use dep::std::collections::map::HashMap;
use dep::std::hash::poseidon2::Poseidon2Hasher;
use dep::std::hash::BuildHasherDefault;

global MAP: HashMap<Field, Field, 2, Poseidon2Hasher> = {
    let mut map = HashMap::default();
    map.insert(1, 2);
    map.insert(3, 4);
    map
};

fn main() {
    println(MAP);
}

Expected Behavior

The compiler to error that there is no impl BuildHasher for Poseidon2Hasher. The correct type would be BuildHasherDefault<Poseidon2Hasher>

Bug

The application panicked (crashed).
Message:  internal error: entered unreachable code: Failed to find trait impl during monomorphization. The failed constraint(s) are:
  Poseidon2Hasher: BuildHasher<H'304 -> '22670>
Location: compiler/noirc_frontend/src/monomorphization/mod.rs:1060

To Reproduce

1. 2. 3. 4.

Project Impact

None

Impact Context

No response

Workaround

None

Workaround Description

No response

Additional Context

No response

Installation Method

None

Nargo Version

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NoirJS Version

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[asterite]

@jfecher I think this got fixed in #5602. Or, put another way, #5029 was a duplicate of this one. But please reopen if what I'm saying is wrong.

[jfecher]

Looks like there's a new error here that the expression type is ambiguous when it should not be.

[asterite]

Should we reopen this issue or open a new one?

[asterite]

(the "No matching impl" is still there, I wonder if the new error happens as a cascade because of the other error)

[jfecher]

@asterite I made a replacement issue for it since it is a different error: https://github.com/noir-lang/noir/issues/5626