ci: work around bug in actions/cache #3731
Merged
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This PR hopefully really fixes the failures to save cache on
master
branch workflows.I re-ran a
master
workflow with extra logging (which is handy), so here I could see why the cache was not getting saved: Instead of the restore actioncache-hit
output containingfalse
ortrue
as documented, when no cache could be restored, it was set tonull
.There was a bug filed for this issue, but it was ignored and eventually closed automatically.