Hope this additional diagnostic info helps:
$ perl t/harness --verbosity=1 t/00-parrot/06-op-inplace.t
t/00-parrot/06-op-inplace....
1..11
ok 1
ok 2
ok 3
ok 4
ok 5
ok 6
ok 7
ok 1
ok 9
ok 7
ok 11
All 11 subtests passed
Test Summary Report
-------------------
t/00-parrot/06-op-inplace (Wstat: 0 Tests: 11 Failed: 0)
Parse errors: Tests out of sequence. Found (1) but expected (8)
Tests out of sequence. Found (7) but expected (10)
Files=1, Tests=11, 2 wallclock secs ( 0.01 usr 0.00 sys + 1.05 cusr
0.04 csys = 1.10 CPU)
Result: FAIL
