[xen-4.10-testing bisection] doubtful build-amd64-prev

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

branch xen-4.10-testing
xenbranch xen-4.10-testing
job build-amd64-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:
   804666c86e7b6f04fe5c5cfdb13199c19e0e99b0 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
43ab30b13fe8b1d5f92a9ad2ca7d61f4c77b6cac
  
  Identical previous flights on this branch:
   146138  started 2020-01-15 22:39:56 Z  blessed real-bisect
   146133  started 2020-01-15 21:42:25 Z  blessed real-bisect
   146127  started 2020-01-15 20:12:33 Z  blessed real-bisect
   146124  started 2020-01-15 19:06:10 Z  blessed real-bisect
   146123  started 2020-01-15 18:05:49 Z  blessed real-bisect
   146143  just generated


----------------------------------------
Running cs-bisection-step 
--graph-out=/home/logs/results/bisect/xen-4.10-testing/build-amd64-prev.xen-build
 --summary-out=tmp/146143.bisection-summary --basis-template=144798 
--blessings=real,real-bisect --flight=146143 xen-4.10-testing build-amd64-prev 
xen-build
Searching for failure / basis pass:
 146076 fail [host=albana1] / 144798 ok.
Failure / basis pass flights: 146076 / 144798
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 70911f1f4aee0366b6122f2b90d367ec0f066beb 
2f4d068645c211e309812372cd0ac58c9024e93b 
43ab30b13fe8b1d5f92a9ad2ca7d61f4c77b6cac
Basis pass 804666c86e7b6f04fe5c5cfdb13199c19e0e99b0 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
43ab30b13fe8b1d5f92a9ad2ca7d61f4c77b6cac
Generating revisions with ./adhoc-revtuple-generator  
git://xenbits.xen.org/osstest/ovmf.git#804666c86e7b6f04fe5c5cfdb13199c19e0e99b0-70911f1f4aee0366b6122f2b90d367ec0f066beb
 
git://xenbits.xen.org/osstest/seabios.git#f21b5a4aeb020f2a5e2c6503f906a9349dd2f069-2f4d068645c211e309812372cd0ac58c9024e93b
 
git://xenbits.xen.org/xen.git#43ab30b13fe8b1d5f92a9ad2ca7d61f4c77b6cac-43ab30b13fe8b1d5f92a9ad2ca7d61f4c77b6cac
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 2615 nodes in revision graph
Searching for test results:
 144772 [host=pinot0]
 144728 [host=godello0]
 144798 pass 804666c86e7b6f04fe5c5cfdb13199c19e0e99b0 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
43ab30b13fe8b1d5f92a9ad2ca7d61f4c77b6cac
 146076 fail 70911f1f4aee0366b6122f2b90d367ec0f066beb 
2f4d068645c211e309812372cd0ac58c9024e93b 
43ab30b13fe8b1d5f92a9ad2ca7d61f4c77b6cac
 146127 !! flight 146127 no revisions or trees
 146133 !! flight 146133 no revisions or trees
 146123 !! flight 146123 no revisions or trees
 146124 !! flight 146124 no revisions or trees
 146138 !! flight 146138 no revisions or trees
Searching for interesting versions
 Result found: flight 144798 (pass), for basis pass
 Result found: flight 146076 (fail), for basis failure
Need to reproduce basis pass (pass); had 1 already.
Should test 804666c86e7b6f04fe5c5cfdb13199c19e0e99b0 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
43ab30b13fe8b1d5f92a9ad2ca7d61f4c77b6cac.
pnmtopng: 180 colors found
Revision graph left in 
/home/logs/results/bisect/xen-4.10-testing/build-amd64-prev.xen-build.{dot,ps,png,html,svg}.
Populating 146143...
Need 146143.build-amd64-prev (like 146076)
Creating 146143.build-amd64-prev (copying from 146076)
Checking for flail (since 144798)...

*** Flailing - >=5 identical flights to no useful effect ***
  Bisector is flailing: >=5 identical flights generated.
  Problem occurs when attempting to test this revision:
   804666c86e7b6f04fe5c5cfdb13199c19e0e99b0 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
43ab30b13fe8b1d5f92a9ad2ca7d61f4c77b6cac
  
  Identical previous flights on this branch:
   146138  started 2020-01-15 22:39:56 Z  blessed real-bisect
   146133  started 2020-01-15 21:42:25 Z  blessed real-bisect
   146127  started 2020-01-15 20:12:33 Z  blessed real-bisect
   146124  started 2020-01-15 19:06:10 Z  blessed real-bisect
   146123  started 2020-01-15 18:05:49 Z  blessed real-bisect
   146143  just generated


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