Prevent stack overflow in deeply nested types.

[hbina]

Related issue #75577 (?)

Unfortunately, I am unable to test whether this actually solves the problem because apparently, 12GB RAM + 2GB swap is not enough to compile the (admittedly toy) source file.

[rust-highfive]

r? @estebank

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[estebank]

@bors try @rust-timer queue

[rust-timer]

Awaiting bors try build completion

[bors]

⌛ Trying commit dc655b2 with merge ea21f00b89d83807014350c2c6c2b0caa5955c00...

[bors]

☀️ Try build successful - checks-actions, checks-azure
Build commit: ea21f00b89d83807014350c2c6c2b0caa5955c00 (ea21f00b89d83807014350c2c6c2b0caa5955c00)

[rust-timer]

Queued ea21f00b89d83807014350c2c6c2b0caa5955c00 with parent f283d3f, future comparison URL.

[rust-timer]

Finished benchmarking try commit (ea21f00b89d83807014350c2c6c2b0caa5955c00): comparison url.

Benchmarking this pull request likely means that it is perf-sensitive, so we're automatically marking it as not fit for rolling up. Please note that if the perf results are neutral, you should likely undo the rollup=never given below by specifying rollup- to bors.

Importantly, though, if the results of this run are non-neutral do not roll this PR up -- it will mask other regressions or improvements in the roll up.

@bors rollup=never

[estebank]

Let's merge so that @AuroransSolis can test on nightly.

@bors r+

[bors]

📌 Commit dc655b2 has been approved by estebank

[bors]

⌛ Testing commit dc655b2 with merge 8dfb988ddd09afc3df3f881523c6babad8a76661...

[bors]

💔 Test failed - checks-actions

[rust-log-analyzer]

Your PR failed (pretty log, raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem.

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[estebank]

@bors retry

[bors]

⌛ Testing commit dc655b2 with merge 91a79fb...

[bors]

☀️ Test successful - checks-actions, checks-azure
Approved by: estebank
Pushing 91a79fb to master...