We are seeing occasional failures when multiple jobs attempt to invoke the function at the same time. This should be fixed by JuliaLang/julia#50842, but in the meantime we can add a pidlock.

Backported PRs:
- [x] #47782 <!-- Generalize Bool parse method to AbstractString -->
- [x] #48634 <!-- Remove unused "deps" mechanism in internal sorting
keywords [NFC] -->
- [x] #49931 <!-- Lock finalizers' lists at exit -->
- [x] #50064 <!-- Fix numbered prompt with input only with comment -->
- [x] #50474 <!-- docs: Fix a `!!! note` which was miscapitalized -->
- [x] #50516 <!-- Fix visibility of assert on GCC12/13 -->
- [x] #50635 <!-- `versioninfo()`: include build info and unofficial
warning -->
- [x] #49915 <!-- Revert "Remove number / vector (#44358)" -->
- [x] #50781 <!-- fix `bit_map!` with aliasing -->
- [x] #50845 <!-- fix #50438, use default pool for at-threads -->
- [x] #49031 <!-- Update inference.md -->
- [x] #50289 <!-- Initialize prev_nold and nold in gc_reset_page -->
- [x] #50559 <!-- Expand kwcall lowering positional default check to
vararg -->
- [x] #49582 <!-- Update HISTORY.md for `DelimitedFiles` -->
- [x] #50341 <!-- invokelatest docs should say not exported before 1.9
-->
- [x] #50525 <!-- only check that values are finite in `generic_lufact`
when `check=true` -->
- [x] #50444 <!-- Optimize getfield lowering to avoid boxing in some
cases -->
- [x] #50523 <!-- Avoid generic call in most cases for getproperty -->
- [x] #50860 <!-- Add `Base.get_extension` to docs/API -->
- [x] #50164 <!-- codegen: handle dead code with unsafe_store of FCA
pointers -->
- [x] #50568 <!-- `Array(::AbstractRange)` should return an `Array` -->
- [x] #50871 <!-- macOS: Don't inspect dead threadtls during exception
handling. -->

Need manual backport:
- [ ] #48542 <!-- Add docs on task-specific buffering using
multithreading -->
- [ ] #50591 <!-- build: fix various makefile bugs -->


Non-merged PRs with backport label:
- [ ] #50842 <!-- Avoid race conditions with recursive rm -->
- [ ] #50823 <!-- Make ranges more robust with unsigned indexes. -->
- [ ] #50663 <!-- Fix Expr(:loopinfo) codegen -->
- [ ] #49716 <!-- Update varinfo() docstring signature -->
- [ ] #49713 <!-- prevent REPL from erroring in numbered mode in some
situations -->
- [ ] #49573 <!-- Implement jl_cpu_pause on PPC64 -->
- [ ] #48726 <!-- fix macro expansion of property destructuring -->
- [ ] #48642 <!-- Use gc alloc instead of alloc typed in lowering -->
- [ ] #48183 <!-- Don't use pkgimage for package if any includes fall in
tracked path for coverage or alloc tracking -->
- [ ] #48050 <!-- improve `--heap-size-hint` arg handling -->
- [ ] #47615 <!-- Allow threadsafe access to buffer of type inference
profiling trees -->

If two processes attempt to recursively delete a directory at the same
time, then we can end up in a state where the initial `isdir` is `true`,
but by the time it actually deletes the directory it is already gone.
e.g.
-
https://buildkite.com/clima/climacore-ci/builds/2460#0189d254-76a9-474b-ad25-e5b16440d629/140-142
which is triggered by

https://github.com/cjdoris/PackageExtensionCompat.jl/blob/636eb5a14ddf9134d004c93f598515903af26443/src/PackageExtensionCompat.jl#L59

-
https://buildkite.com/clima/climacore-ci/builds/2457#0189c7fe-8872-40c5-9106-da2e621ff55a/139-150
which is triggered by

https://github.com/JuliaGPU/GPUCompiler.jl/blob/06e670657d7ceebc1845d7c9534a8352c33490de/src/rtlib.jl#L152

I've been conservative and only applied this when `force=true`, but
perhaps it should apply generally?

(cherry picked from commit cbd3c89)

If two processes attempt to recursively delete a directory at the same
time, then we can end up in a state where the initial `isdir` is `true`,
but by the time it actually deletes the directory it is already gone.
e.g.
-
https://buildkite.com/clima/climacore-ci/builds/2460#0189d254-76a9-474b-ad25-e5b16440d629/140-142
which is triggered by

https://github.com/cjdoris/PackageExtensionCompat.jl/blob/636eb5a14ddf9134d004c93f598515903af26443/src/PackageExtensionCompat.jl#L59

-
https://buildkite.com/clima/climacore-ci/builds/2457#0189c7fe-8872-40c5-9106-da2e621ff55a/139-150
which is triggered by

https://github.com/JuliaGPU/GPUCompiler.jl/blob/06e670657d7ceebc1845d7c9534a8352c33490de/src/rtlib.jl#L152

I've been conservative and only applied this when `force=true`, but
perhaps it should apply generally?

(cherry picked from commit cbd3c89)

If two processes attempt to recursively delete a directory at the same
time, then we can end up in a state where the initial `isdir` is `true`,
but by the time it actually deletes the directory it is already gone.
e.g.
-
https://buildkite.com/clima/climacore-ci/builds/2460#0189d254-76a9-474b-ad25-e5b16440d629/140-142
which is triggered by

https://github.com/cjdoris/PackageExtensionCompat.jl/blob/636eb5a14ddf9134d004c93f598515903af26443/src/PackageExtensionCompat.jl#L59

-
https://buildkite.com/clima/climacore-ci/builds/2457#0189c7fe-8872-40c5-9106-da2e621ff55a/139-150
which is triggered by

https://github.com/JuliaGPU/GPUCompiler.jl/blob/06e670657d7ceebc1845d7c9534a8352c33490de/src/rtlib.jl#L152

I've been conservative and only applied this when `force=true`, but
perhaps it should apply generally?

(cherry picked from commit cbd3c89)

If two processes attempt to recursively delete a directory at the same
time, then we can end up in a state where the initial `isdir` is `true`,
but by the time it actually deletes the directory it is already gone.
e.g.
-
https://buildkite.com/clima/climacore-ci/builds/2460#0189d254-76a9-474b-ad25-e5b16440d629/140-142
which is triggered by

https://github.com/cjdoris/PackageExtensionCompat.jl/blob/636eb5a14ddf9134d004c93f598515903af26443/src/PackageExtensionCompat.jl#L59

-
https://buildkite.com/clima/climacore-ci/builds/2457#0189c7fe-8872-40c5-9106-da2e621ff55a/139-150
which is triggered by

https://github.com/JuliaGPU/GPUCompiler.jl/blob/06e670657d7ceebc1845d7c9534a8352c33490de/src/rtlib.jl#L152

I've been conservative and only applied this when `force=true`, but
perhaps it should apply generally?

(cherry picked from commit cbd3c89)

Backported PRs:
- [x] #49357 <!-- Fix unclosed code fence in src/manual/methods.md -->
- [x] #50842 <!-- Avoid race conditions with recursive rm -->
- [x] #50858 <!-- Add a `threadpool` parameter to `Channel` constructor
-->
- [x] #50730 <!-- Fix integer overflow in `isapprox` -->
- [x] #50823 <!-- Make ranges more robust with unsigned indexes. -->
- [x] #50915 <!-- Add note the `Task` about sticky bit -->
- [x] #50989 <!-- fix incorrect results in `expm1(::Union{Float16,
Float32})` -->
- [x] #50912 <!-- Separate foreign threads into a :foreign threadpool
-->
- [x] #51019 <!-- fix a case of potentially use of undefined variable
when handling error in distributed message processing -->
- [x] #51222 <!-- Check again if the tty is open inside the IO lock -->
- [x] #51254 <!-- Ryu: make sure adding zeros does not overwrite
trailing dot -->
- [x] #51284 <!-- Avoid infinite loop when doing SIGTRAP in arm64-apple
-->
- [x] #51491 <!-- Throw clearer ArgumentError for strip with two string
args -->
- [x] #51531 <!-- fix `_tryonce_download_from_cache` (busybox.exe
download error) -->