Set: pp::colors
  Set: pp::unicode
  Assumed: x
env_errors.lean:3:0 error: set_opaque failed, 'x' is not a definition
before import
env_errors.lean:11:0 error: file 'tstblafoo.lean' not found in the LEAN_PATH
before load1
env_errors.lean:17:0 error: failed to open file 'tstblafoo.lean'
before load2
env_errors.lean:23:0 error: corrupted binary file
before load3
env_errors.lean:28:0 error: file 'fake2.olean' does not seem to be a valid object Lean file