[xen-4.9-testing bisection] doubtful build-i386-prev

[osstest service owner <osstest-admin@xxxxxxxxxxxxxx>]

branch xen-4.9-testing
xenbranch xen-4.9-testing
job build-i386-prev
testid xen-build

Tree: ovmf prev git://xenbits.xen.org/osstest/ovmf.git
Tree: seabios prev git://xenbits.xen.org/osstest/seabios.git
Tree: xen prev git://xenbits.xen.org/xen.git

*** Flailing - >=5 identical flights to no useful effect ***
  Bisector is flailing: >=5 identical flights generated.
  Problem occurs when attempting to test this revision:
   de15e7c2651ada46cc649c5b3c8c0c145354ac04 
eaaf726038cb9b2d01312d6430b4e93842aa96eb 
8db85532cbb80c6396e5dab8809feb7b7b0d5c45
  
  Identical previous flights on this branch:
   151005  started 2020-06-10 07:07:32 Z  blessed real-bisect
   151003  started 2020-06-10 05:58:02 Z  blessed real-bisect
   151001  started 2020-06-10 04:34:36 Z  blessed real-bisect
   151000  started 2020-06-10 04:31:47 Z  blessed real-bisect
   150995  started 2020-06-10 03:06:02 Z  blessed real-bisect
   151007  just generated


----------------------------------------
Running cs-bisection-step 
--graph-out=/home/logs/results/bisect/xen-4.9-testing/build-i386-prev.xen-build 
--summary-out=tmp/151007.bisection-summary --basis-template=150120 
--blessings=real,real-bisect --flight=151007 xen-4.9-testing build-i386-prev 
xen-build
Searching for failure / basis pass:
 150951 fail [host=fiano1] / 150120 [host=fiano0] 150102 [host=fiano0] 150085 
[host=huxelrebe0] 150068 [host=huxelrebe0] 150051 ok.
Failure / basis pass flights: 150951 / 150051
Tree: ovmf prev git://xenbits.xen.org/osstest/ovmf.git
Tree: seabios prev git://xenbits.xen.org/osstest/seabios.git
Tree: xen prev git://xenbits.xen.org/xen.git
Latest 6ff7c838d09224dd4e4c9b5b93152d8db1b19740 
2e3de6253422112ae43e608661ba94ea6b345694 
8db85532cbb80c6396e5dab8809feb7b7b0d5c45
Basis pass de15e7c2651ada46cc649c5b3c8c0c145354ac04 
eaaf726038cb9b2d01312d6430b4e93842aa96eb 
8db85532cbb80c6396e5dab8809feb7b7b0d5c45
Generating revisions with ./adhoc-revtuple-generator  
git://xenbits.xen.org/osstest/ovmf.git#de15e7c2651ada46cc649c5b3c8c0c145354ac04-6ff7c838d09224dd4e4c9b5b93152d8db1b19740
 
git://xenbits.xen.org/osstest/seabios.git#eaaf726038cb9b2d01312d6430b4e93842aa96eb-2e3de6253422112ae43e608661ba94ea6b345694
 
git://xenbits.xen.org/xen.git#8db85532cbb80c6396e5dab8809feb7b7b0d5c45-8db85532cbb80c6396e5dab8809feb7b7b0d5c45
Use of uninitialized value $parents in array dereference at 
./adhoc-revtuple-generator line 465.
Use of uninitialized value in concatenation (.) or string at 
./adhoc-revtuple-generator line 465.
Loaded 7573 nodes in revision graph
Searching for test results:
 150038 pass irrelevant
 150051 pass de15e7c2651ada46cc649c5b3c8c0c145354ac04 
eaaf726038cb9b2d01312d6430b4e93842aa96eb 
8db85532cbb80c6396e5dab8809feb7b7b0d5c45
 150085 [host=huxelrebe0]
 150068 [host=huxelrebe0]
 150120 [host=fiano0]
 150102 [host=fiano0]
 150940 [host=fiano0]
 150995 !! flight 150995 no revisions or trees
 151000 !! flight 151000 no revisions or trees
 151001 !! flight 151001 no revisions or trees
 150951 fail 6ff7c838d09224dd4e4c9b5b93152d8db1b19740 
2e3de6253422112ae43e608661ba94ea6b345694 
8db85532cbb80c6396e5dab8809feb7b7b0d5c45
 151003 !! flight 151003 no revisions or trees
 151005 !! flight 151005 no revisions or trees
Searching for interesting versions
 Result found: flight 150051 (pass), for basis pass
 For basis failure, parent search stopping at 
de15e7c2651ada46cc649c5b3c8c0c145354ac04 
eaaf726038cb9b2d01312d6430b4e93842aa96eb 
8db85532cbb80c6396e5dab8809feb7b7b0d5c45, results HASH(0x55a6d554bf68) Result 
found: flight 150951 (fail), for basis failure (at ancestor ~7572)
Need to reproduce basis pass (pass); had 1 already.
Should test de15e7c2651ada46cc649c5b3c8c0c145354ac04 
eaaf726038cb9b2d01312d6430b4e93842aa96eb 
8db85532cbb80c6396e5dab8809feb7b7b0d5c45.
pnmtopng: 104 colors found
Revision graph left in 
/home/logs/results/bisect/xen-4.9-testing/build-i386-prev.xen-build.{dot,ps,png,html,svg}.
Populating 151007...
Need 151007.build-i386-prev (like 150951)
Creating 151007.build-i386-prev (copying from 150951)
Checking for flail (since 150051)...

*** Flailing - >=5 identical flights to no useful effect ***
  Bisector is flailing: >=5 identical flights generated.
  Problem occurs when attempting to test this revision:
   de15e7c2651ada46cc649c5b3c8c0c145354ac04 
eaaf726038cb9b2d01312d6430b4e93842aa96eb 
8db85532cbb80c6396e5dab8809feb7b7b0d5c45
  
  Identical previous flights on this branch:
   151005  started 2020-06-10 07:07:32 Z  blessed real-bisect
   151003  started 2020-06-10 05:58:02 Z  blessed real-bisect
   151001  started 2020-06-10 04:34:36 Z  blessed real-bisect
   151000  started 2020-06-10 04:31:47 Z  blessed real-bisect
   150995  started 2020-06-10 03:06:02 Z  blessed real-bisect
   151007  just generated