Today's validate failures

On x86_64/Linux: Unexpected passes: perf/should_run T149 (normal) Unexpected failures: perf/compiler T3064 [stat too good] (normal) perf/haddock haddock.Cabal [stat not good enough] (normal) perf/haddock haddock.base [stat not good enough] (normal) simplCore/should_compile T3717 [stderr mismatch] (optasm) simplCore/should_compile T3772 [bad stdout] (normal) simplCore/should_compile T4908 [stderr mismatch] (optasm) simplCore/should_compile T4930 [stderr mismatch] (optasm) simplCore/should_compile T7360 [stderr mismatch] (optasm) simplCore/should_compile spec-inline [stderr mismatch] (optasm)