`diagnostic_namespace` was not listed in `declare_features` ICE about rust HOT 8 CLOSED

Moving to rust-lang/rust in that case, since it sounds like fixing this requires changes in the compiler and we can't do much about that on the clippy side

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Here is the full ICE output:

rustc-ice-2024-03-13T16_44_18-316116.txt

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Turns out I was missing diagnostic_namespace in my deny list. Not sure if that should be an ICE or not, feel free to close if that is expected behavior.

This wasn't a fix, the behavior still happened.

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Does this specifically only happen with clippy, or does this ICE also happen with a regular cargo check/cargo build? The backtrace and the fact that these are all rustc lints/features makes me think it's a bug in the compiler

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cargo check and cargo build both produce the same ICE.

from rust.

From what I can tell, MCVE is

#![deny(unknown_or_malformed_diagnostic_attributes)]

or, alternatively,

#![feature(diagnostic_namespace)]
#![deny(unknown_or_malformed_diagnostic_attributes)]

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searched nightlies: from nightly-2024-01-01 to nightly-2024-03-12
regressed nightly: nightly-2024-03-09
searched commit range: 9c3ad80...46b180e
regressed commit: 9823f17

cargo bisect-rustc -vv --preserve --start=2024-01-01 --end=2024-03-12 --access=github --regress ice 

Probably #119888, cc @weiznich

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I filled #122482 to address this

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