Panic (in refineFromInScope?) on head.hackage perf job

Job #1211977 failed for 2a556f25:

Two packages were affected: fixed-vector and indexed-traversable. Both panicked with messages beginning:

<no location info>: error:
    panic! (the 'impossible' happened)
  GHC version 9.5.20221025:
	refineFromInScope
  InScope {wild_00 wild_X1 f_a30x a_a30y as_a30z $citraverse_a4gX
           ...