mode-rust.js is not found

[traviscross]

Problem

When loading a page with Rust editable code blocks, such as the "Rust Codeblocks" page in the test book, the browser throws a 404 on trying to access /mode-rust.js. It's hitting this because the script tag isn't using the hashed version of the file name.

There's some strange interaction with the ace editor going on here. The script tag that triggers this 404 is inserted dynamically.

This was introduced, I'm guessing, by #1368. A bisection points at commit 74200f7, but I'm guessing that's just because it fixed another issue that may have been masking this one.

Is this why the move-between-pages.goml test had to keep fail-on-request-error disabled in #2552?

cc @notriddle @GuillaumeGomez @ehuss

Steps

No response

Possible Solution(s)

No response

Notes

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Version

[GuillaumeGomez]

Yes and it's why I opened #2617.