[crater experiment] Turn on debug assertions

[saethlin]

The standard library has a lot more debug assertions since #92686 which also found and fixed some UB in the compiler using them. It has been suggested that as a follow-up to trying out the LLVM assertions in #101591, we try out the Rust assertions.

I think this would only need a check run.

[rust-highfive]

r? @pietroalbini

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[emilyalbini]

@bors try

[bors]

⌛ Trying commit ca14fbe with merge 3bbb5242a8064de4ca3af4036745ddf603ddaa85...

[bors]

☀️ Try build successful - checks-actions
Build commit: 3bbb5242a8064de4ca3af4036745ddf603ddaa85 (3bbb5242a8064de4ca3af4036745ddf603ddaa85)

[emilyalbini]

@craterbot run mode=build-only

[craterbot]

👌 Experiment pr-101929 created and queued.
🤖 Automatically detected try build 3bbb5242a8064de4ca3af4036745ddf603ddaa85
🔍 You can check out the queue and this experiment's details.

ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

[craterbot]

🚧 Experiment pr-101929 is now running

ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

[craterbot]

🎉 Experiment pr-101929 is completed!
📊 224 regressed and 3 fixed (243718 total)
📰 Open the full report.

⚠️ If you notice any spurious failure please add them to the blacklist!
ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

[saethlin]

Looks like the majority of these are SIGILL crashes in either syntex_syntax which is an old and deprecated crate, rle-decode-fast version 1.0.1, and clang's 1.0 series. The first two are doing out-of-bounds unchecked indexing, and clang creates null slices. There's also one showing from font-kit's null slices, always nice to see an old friend.

It looks like the rest of the regressions are OOMs of some kind or another.

I reported what looks like the single net-new finding here: #102074

There are also plenty of other ICEs in here, but nothing new as best I can tell. I think this matter is closed.