Fix tests for rust 1.79

[workingjubilee]

• Fix the accuracy test for collapse_debuginfo
• Fix a couple of unexpected_cfgs warnings about Cargo features
• Silence the rest, ain't nobody got time for all that shit
• Use rustup update --no-self-update consistently to avoid spurious CI errors

[workingjubilee]

The sweet irony of "it won't actually work until its committed".

[workingjubilee]

I suppose there is a way to fix it, actually...

[ChrisDenton]

Looks good. Are there any docs for collapse_debuginfo yet?

[ChrisDenton]

Btw, it's just check_cfg that's failing.

[workingjubilee]

@Urgau It caught like two things that it should have caught and I almost missed them because it was squawking irrelevantly on all the nonsense like --cfg backtrace_in_libstd.

[workingjubilee]

I didn't design this crate's silliness, I just keep it running.

[workingjubilee]

@ChrisDenton It looks like there's only one for the associated codegen option:

https://github.com/rust-lang/rust/blob/31110152e2b3ce3c009be4a0a13edaff7c008b61/src/doc/rustc/src/codegen-options/index.md?plain=1#L45-L55

[workingjubilee]

Ah, found it: https://github.com/rust-lang/reference/pull/1468

[ChrisDenton]

Thank you!

[Urgau]

@Urgau It caught like two things that it should have caught and I almost missed them because it was squawking irrelevantly on all the nonsense like --cfg backtrace_in_libstd.

@workingjubilee This crate has already many build.rs, you could have simply added the required cargo::check-check-cfg instructions in it.

[workingjubilee]

@Urgau I intend to delete this crate's main build.rs, so no.

[workingjubilee]

@Urgau This crate only has a build.rs because Rust currently has tail-end Android legacy support that is not actually supported anymore upstream by the NDK. So, rust-lang/rust has a PR up to remove it, but that is blocked on rust's own CI. This crate never should have had a build.rs, and that will soon be fixed for good, and I will not merge another.