[BUG]: Clang trunk builds haven't updated since May 8

Describe the bug

The build of clang trunk appears to have stopped being updated after 9a12138b5fd8c807c3b95144236c07dfc323974f.

Steps to reproduce

Full compiler version
clang version 15.0.0 (https://github.com/llvm/llvm-project.git 9a12138b5fd8c807c3b95144236c07dfc323974f)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/compiler-explorer/clang-assertions-trunk/bin

Expected behavior

Usually the compiler explorer builds are only about 24 hours behind trunk.

Reproduction link

Not applicable

Screenshots

Not applicable

Operating System

No response

Browser version

No response

[mattgodbolt]

https://github.com/compiler-explorer/compiler-workflows/actions/runs/2332985777 - fingers crossed 😃 (am at DayJob ™️ right now hence spotty replies, will hopefully get this deployed soon though)

[RKSimon]

A post-review comment on https://reviews.llvm.org/D125315 is currently discussing this:

The OpenMP offloading runtime was always intended to be built with a newly-built Clang, either through a two-phase build or with -DLLVM_ENABLE_RUNTIMES=openmp. This patch added some code that uses standard CMake to build the library, rather than locating the clang binary directly. I could add some code to skip building this static library, or the device runtime entirely, if the compiler isn’t an up-to-date Clang. I’m not sure what the best solution to this is, since we always required that this was to be built with Clang, this patch just made it a more strict requirement.