IOEnv failure with -fbyte-code-and-object-code

To reproduce: create Main.hs:

module Main where
main = return ()

and invoke ./stage1/bin/ghc -fbyte-code-and-object-code Main two times. The first time it succeeds, the second time I get

typecheckWholeCoreBindings:
  main Failed to load interface for ‘:Main’
       Use -v (or `:set -v` in ghci) to see a list of the files searched for.

<no location info>: error: IOEnv failure

cc @mpickering