containers intset-benchmark takes a long time to run on HEAD.

Works with 9.4.2:

Pandi@Ryzen MINGW64 ~/repos/containers
$ cabal run -w ghc-9.4.2 --allow-newer=* intset-benchmarks -- -p All.member
Up to date
All
  member: OK (2.44s)
    37.2 μs ± 2.6 μs

All 1 tests passed (2.44s)

But with HEAD this takes forever. I eventually killed the process as I got bored of waiting

$ time cabal --store-dir store-head run --builddir=dist-head -w /home/andi/ghc_head/_build/stage1/bin/ghc --allow-newer=* intset-benchmarks -- -p All.member
Up to date
All
  member: This benchmark takes more than 100 seconds. Consider setting --timeout, if this is unexpected (or to silence this warning).


real    3m23.322s
user    0m0.000s
sys     0m0.015s

Seems pretty bad.