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Rollup merge of #129619 - sunshowers:update-stacker, r=Mark-Simulacrum
Update stacker to 0.1.17
The main new feature is support for detecting the current stack size on illumos. (See [my blog post] for the context which led to this.)
[my blog post]: https://sunshowers.io/posts/rustc-segfault-illumos/
try-job: x86_64-mingw
