[libvirt bisection] doubtful test-amd64-i386-libvirt-xsm

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

branch xen-unstable
xenbranch xen-unstable
job test-amd64-i386-libvirt-xsm
testid guest-start.2

Tree: libvirt git://libvirt.org/libvirt.git
Tree: libvirt_keycodemapdb https://gitlab.com/keycodemap/keycodemapdb.git
Tree: linux git://xenbits.xen.org/linux-pvops.git
Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git
Tree: ovmf git://xenbits.xen.org/osstest/ovmf.git
Tree: qemu git://xenbits.xen.org/qemu-xen-traditional.git
Tree: qemuu git://xenbits.xen.org/qemu-xen.git
Tree: seabios git://xenbits.xen.org/osstest/seabios.git
Tree: xen 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:
   6f894a29d812381ffaf8e321f710ceb4bef8f944 
317d3eeb963a515e15a63fa356d8ebcda7041a51 
b98aebd298246df37b472c52a2ee1023256d02e3 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
804666c86e7b6f04fe5c5cfdb13199c19e0e99b0 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
933ebad2470a169504799a1d95b8e410bd9847ef 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
c9115affa6f83aebe29ae9cbf503aa163911a5bb
  
  Identical previous flights on this branch:
   151784  started 2020-07-10 08:00:22 Z  blessed real-bisect
   151781  started 2020-07-10 06:38:53 Z  blessed real-bisect
   151776  started 2020-07-10 04:18:34 Z  blessed real-bisect
   151773  started 2020-07-10 02:02:36 Z  blessed real-bisect
   151771  started 2020-07-10 00:35:30 Z  blessed real-bisect
   151787  just generated


----------------------------------------
Running cs-bisection-step 
--graph-out=/home/logs/results/bisect/libvirt/test-amd64-i386-libvirt-xsm.guest-start.2
 --summary-out=tmp/151787.bisection-summary --basis-template=151496 
--blessings=real,real-bisect --flight=151787 libvirt 
test-amd64-i386-libvirt-xsm guest-start.2
Searching for failure / basis pass:
 151754 fail [host=rimava1] / 151729 [host=pinot0] 151698 [host=albana0] 151665 
[host=huxelrebe1] 151638 [host=elbling1] 151608 [host=huxelrebe0] 151564 
[host=fiano1] 151527 [host=albana1] 151496 [host=pinot1] 151469 
[host=chardonnay0] 151417 [host=chardonnay1] 151396 [host=fiano0] 151370 
[host=elbling0] 151352 [host=huxelrebe1] 151330 [host=pinot0] 151308 
[host=albana0] 151251 [host=huxelrebe0] 151229 [host=fiano1] 151197 
[host=albana1] 151165 [host=elbling1] 151091 [host=albana1] 151062 [host=\
 fiano0] 151040 [host=huxelrebe1] 150997 [host=albana0] 150932 
[host=chardonnay1] 146182 [host=fiano0] 146156 [host=pinot1] 146103 
[host=albana0] 146061 [host=huxelrebe0] 145969 [host=debina1] 145906 
[host=italia0] 145842 [host=fiano1] 145779 [host=albana1] 145511 
[host=elbling0] 145212 [host=albana0] 145173 [host=italia0] 145133 
[host=pinot1] 145054 [host=chardonnay0] 144995 [host=fiano1] 144958 
[host=elbling1] 144920 [host=chardonnay1] 144885 ok.
Failure / basis pass flights: 151754 / 144885
(tree with no url: minios)
(tree in basispass but not in latest: libvirt_gnulib)
Tree: libvirt git://libvirt.org/libvirt.git
Tree: libvirt_keycodemapdb https://gitlab.com/keycodemap/keycodemapdb.git
Tree: linux git://xenbits.xen.org/linux-pvops.git
Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git
Tree: ovmf git://xenbits.xen.org/osstest/ovmf.git
Tree: qemu git://xenbits.xen.org/qemu-xen-traditional.git
Tree: qemuu git://xenbits.xen.org/qemu-xen.git
Tree: seabios git://xenbits.xen.org/osstest/seabios.git
Tree: xen git://xenbits.xen.org/xen.git
Latest a4d97f0c199e980bb55d3b659214308c1b371b73 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
bdafda8c457eb90c65f37026589b54258300f05c 
3c659044118e34603161457db9934a34f816d78b 
ea6d3cd1ed79d824e605a70c3626bc437c386260 
88ab0c15525ced2eefe39220742efe4769089ad8 
3fdc211b01b29f252166937238efe02d15cb5780
Basis pass 6f894a29d812381ffaf8e321f710ceb4bef8f944 
317d3eeb963a515e15a63fa356d8ebcda7041a51 
b98aebd298246df37b472c52a2ee1023256d02e3 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
804666c86e7b6f04fe5c5cfdb13199c19e0e99b0 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
933ebad2470a169504799a1d95b8e410bd9847ef 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
c9115affa6f83aebe29ae9cbf503aa163911a5bb
Generating revisions with ./adhoc-revtuple-generator  
git://libvirt.org/libvirt.git#6f894a29d812381ffaf8e321f710ceb4bef8f944-a4d97f0c199e980bb55d3b659214308c1b371b73
 
https://gitlab.com/keycodemap/keycodemapdb.git#317d3eeb963a515e15a63fa356d8ebcda7041a51-27acf0ef828bf719b2053ba398b195829413dbdd
 
git://xenbits.xen.org/linux-pvops.git#b98aebd298246df37b472c52a2ee1023256d02e3-c3038e718a19fc596f7b1baba0f83d5146dc7784
 
git://xenbits.xen.org/osstest/linux-firmware.git#c530a75c1e6a472b0eb9558310b518f0dfcd\
 8860-c530a75c1e6a472b0eb9558310b518f0dfcd8860 
git://xenbits.xen.org/osstest/ovmf.git#804666c86e7b6f04fe5c5cfdb13199c19e0e99b0-bdafda8c457eb90c65f37026589b54258300f05c
 
git://xenbits.xen.org/qemu-xen-traditional.git#d0d8ad39ecb51cd7497cd524484fe09f50876798-3c659044118e34603161457db9934a34f816d78b
 
git://xenbits.xen.org/qemu-xen.git#933ebad2470a169504799a1d95b8e410bd9847ef-ea6d3cd1ed79d824e605a70c3626bc437c386260
 
git://xenbits.xen.org/osstest/seabios.git#f21b5a4aeb020f2a5e2c6503f906a9349dd2f069-88ab\
 0c15525ced2eefe39220742efe4769089ad8 
git://xenbits.xen.org/xen.git#c9115affa6f83aebe29ae9cbf503aa163911a5bb-3fdc211b01b29f252166937238efe02d15cb5780
Auto packing the repository in background for optimum performance.
See "git help gc" for manual housekeeping.
error: The last gc run reported the following. Please correct the root cause
and remove gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to 
remove them.

adhoc-revtuple-generator: tree discontiguous: linux-pvops
Auto packing the repository in background for optimum performance.
See "git help gc" for manual housekeeping.
error: The last gc run reported the following. Please correct the root cause
and remove gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to 
remove them.

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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 214667 nodes in revision graph
Searching for test results:
 144885 pass 6f894a29d812381ffaf8e321f710ceb4bef8f944 
317d3eeb963a515e15a63fa356d8ebcda7041a51 
b98aebd298246df37b472c52a2ee1023256d02e3 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
804666c86e7b6f04fe5c5cfdb13199c19e0e99b0 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
933ebad2470a169504799a1d95b8e410bd9847ef 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
c9115affa6f83aebe29ae9cbf503aa163911a5bb
 144958 [host=elbling1]
 144920 [host=chardonnay1]
 144995 [host=fiano1]
 145054 [host=chardonnay0]
 145173 [host=italia0]
 145133 [host=pinot1]
 145212 [host=albana0]
 145511 [host=elbling0]
 145542 []
 145589 []
 145656 []
 145710 []
 145779 [host=albana1]
 145842 [host=fiano1]
 145906 [host=italia0]
 145969 [host=debina1]
 146061 [host=huxelrebe0]
 146103 [host=albana0]
 146182 [host=fiano0]
 146156 [host=pinot1]
 146240 []
 146211 []
 146299 []
 146344 []
 146374 []
 146410 []
 146455 []
 146509 []
 146489 []
 146528 []
 146546 []
 146565 []
 146586 []
 146616 []
 146636 []
 146660 []
 146689 []
 146737 []
 146756 []
 146714 []
 146775 []
 146799 []
 146843 []
 146921 []
 146995 []
 147040 []
 147084 []
 147141 []
 147195 []
 147265 []
 147340 []
 147419 []
 147477 []
 147520 []
 147583 []
 147649 []
 147703 []
 147784 []
 147736 []
 147885 []
 147831 []
 147981 []
 148068 []
 148144 []
 148196 []
 148269 []
 148331 []
 148406 []
 148459 []
 148503 []
 148547 []
 148615 []
 148583 []
 148651 []
 148688 []
 148729 []
 148775 []
 148799 []
 148830 []
 148887 []
 148954 []
 149001 []
 149043 []
 149074 []
 149123 []
 149154 []
 149193 []
 149234 []
 149268 []
 149314 []
 149376 []
 149407 []
 149434 []
 149455 []
 149482 []
 149550 []
 149508 []
 149590 []
 149643 []
 149629 []
 149615 []
 149635 []
 149684 []
 149666 []
 149696 []
 149732 []
 149773 []
 149746 []
 149803 []
 149826 []
 149886 []
 149833 []
 149850 []
 149870 []
 149909 []
 149902 []
 149895 []
 150053 []
 150062 []
 150083 []
 150099 []
 150121 []
 150155 []
 150131 []
 150146 []
 150170 []
 150210 []
 150228 []
 150190 []
 150222 []
 150237 []
 150268 []
 150287 []
 150347 []
 150317 []
 150339 []
 150359 []
 150374 []
 150393 []
 150462 []
 150419 []
 150523 []
 150555 []
 150592 []
 150612 []
 150639 []
 150932 [host=chardonnay1]
 150997 [host=albana0]
 151040 [host=huxelrebe1]
 151062 [host=fiano0]
 151091 [host=albana1]
 151165 [host=elbling1]
 151197 [host=albana1]
 151251 [host=huxelrebe0]
 151229 [host=fiano1]
 151330 [host=pinot0]
 151308 [host=albana0]
 151352 [host=huxelrebe1]
 151370 [host=elbling0]
 151417 [host=chardonnay1]
 151396 [host=fiano0]
 151469 [host=chardonnay0]
 151496 [host=pinot1]
 151564 [host=fiano1]
 151527 [host=albana1]
 151608 [host=huxelrebe0]
 151638 [host=elbling1]
 151665 [host=huxelrebe1]
 151698 [host=albana0]
 151781 blocked 6f894a29d812381ffaf8e321f710ceb4bef8f944 
317d3eeb963a515e15a63fa356d8ebcda7041a51 
b98aebd298246df37b472c52a2ee1023256d02e3 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
804666c86e7b6f04fe5c5cfdb13199c19e0e99b0 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
933ebad2470a169504799a1d95b8e410bd9847ef 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
c9115affa6f83aebe29ae9cbf503aa163911a5bb
 151765 blocked 6f894a29d812381ffaf8e321f710ceb4bef8f944 
317d3eeb963a515e15a63fa356d8ebcda7041a51 
b98aebd298246df37b472c52a2ee1023256d02e3 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
804666c86e7b6f04fe5c5cfdb13199c19e0e99b0 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
933ebad2470a169504799a1d95b8e410bd9847ef 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
c9115affa6f83aebe29ae9cbf503aa163911a5bb
 151771 blocked 6f894a29d812381ffaf8e321f710ceb4bef8f944 
317d3eeb963a515e15a63fa356d8ebcda7041a51 
b98aebd298246df37b472c52a2ee1023256d02e3 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
804666c86e7b6f04fe5c5cfdb13199c19e0e99b0 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
933ebad2470a169504799a1d95b8e410bd9847ef 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
c9115affa6f83aebe29ae9cbf503aa163911a5bb
 151729 [host=pinot0]
 151784 blocked 6f894a29d812381ffaf8e321f710ceb4bef8f944 
317d3eeb963a515e15a63fa356d8ebcda7041a51 
b98aebd298246df37b472c52a2ee1023256d02e3 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
804666c86e7b6f04fe5c5cfdb13199c19e0e99b0 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
933ebad2470a169504799a1d95b8e410bd9847ef 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
c9115affa6f83aebe29ae9cbf503aa163911a5bb
 151773 blocked 6f894a29d812381ffaf8e321f710ceb4bef8f944 
317d3eeb963a515e15a63fa356d8ebcda7041a51 
b98aebd298246df37b472c52a2ee1023256d02e3 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
804666c86e7b6f04fe5c5cfdb13199c19e0e99b0 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
933ebad2470a169504799a1d95b8e410bd9847ef 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
c9115affa6f83aebe29ae9cbf503aa163911a5bb
 151754 fail a4d97f0c199e980bb55d3b659214308c1b371b73 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
bdafda8c457eb90c65f37026589b54258300f05c 
3c659044118e34603161457db9934a34f816d78b 
ea6d3cd1ed79d824e605a70c3626bc437c386260 
88ab0c15525ced2eefe39220742efe4769089ad8 
3fdc211b01b29f252166937238efe02d15cb5780
 151776 blocked 6f894a29d812381ffaf8e321f710ceb4bef8f944 
317d3eeb963a515e15a63fa356d8ebcda7041a51 
b98aebd298246df37b472c52a2ee1023256d02e3 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
804666c86e7b6f04fe5c5cfdb13199c19e0e99b0 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
933ebad2470a169504799a1d95b8e410bd9847ef 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
c9115affa6f83aebe29ae9cbf503aa163911a5bb
Searching for interesting versions
 Result found: flight 144885 (pass), for basis pass
 Result found: flight 151754 (fail), for basis failure (at ancestor ~525)
Need to reproduce basis pass (pass); had 1 already.
Should test 6f894a29d812381ffaf8e321f710ceb4bef8f944 
317d3eeb963a515e15a63fa356d8ebcda7041a51 
b98aebd298246df37b472c52a2ee1023256d02e3 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
804666c86e7b6f04fe5c5cfdb13199c19e0e99b0 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
933ebad2470a169504799a1d95b8e410bd9847ef 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
c9115affa6f83aebe29ae9cbf503aa163911a5bb.
dot: graph is too large for cairo-renderer bitmaps. Scaling by 0.14067 to fit
pnmtopng: 25 colors found
Revision graph left in 
/home/logs/results/bisect/libvirt/test-amd64-i386-libvirt-xsm.guest-start.2.{dot,ps,png,html,svg}.
Populating 151787...
Need 151787.test-amd64-i386-libvirt-xsm (like 151754)
Creating 151787.test-amd64-i386-libvirt-xsm (copying from 151754)
Need 151787.build-i386-xsm (like 151754)
 revision_ovmf=804666c86e7b6f04fe5c5cfdb13199c19e0e99b0
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=933ebad2470a169504799a1d95b8e410bd9847ef
 revision_seabios=f21b5a4aeb020f2a5e2c6503f906a9349dd2f069
 revision_xen=c9115affa6f83aebe29ae9cbf503aa163911a5bb
Searching for build-i386-xsm (like 151754) to reuse...
Can reuse build 151765.build-i386-xsm.
DB confict (err=7 state=40001): DBD::Pg::st execute failed: ERROR:  could not 
serialize access due to read/write dependencies among transactions
DETAIL:  Reason code: Canceled on identification as a pivot, during write.
HINT:  The transaction might succeed if retried. [for Statement "        UPDATE 
runvars SET val=?
            WHERE  flight=? AND job=? AND name=?
" with ParamValues: 1='151765.build-i386-xsm', 2='151787', 
3='test-amd64-i386-libvirt-xsm', 4='buildjob']
DB conflict (messages above may refer); retrying...
Populating 151787...
Need 151787.test-amd64-i386-libvirt-xsm (like 151754)
Creating 151787.test-amd64-i386-libvirt-xsm (copying from 151754)
Need 151787.build-i386-xsm (like 151754)
 revision_ovmf=804666c86e7b6f04fe5c5cfdb13199c19e0e99b0
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=933ebad2470a169504799a1d95b8e410bd9847ef
 revision_seabios=f21b5a4aeb020f2a5e2c6503f906a9349dd2f069
 revision_xen=c9115affa6f83aebe29ae9cbf503aa163911a5bb
Can reuse build 151765.build-i386-xsm.
Need 151787.build-i386-pvops (like 151754)
 revision_linux=b98aebd298246df37b472c52a2ee1023256d02e3
 revision_linuxfirmware=c530a75c1e6a472b0eb9558310b518f0dfcd8860
Searching for build-i386-pvops (like 151754) to reuse...
Can reuse build-kern 151765.build-i386-pvops.
DB confict (err=7 state=40001): DBD::Pg::st execute failed: ERROR:  could not 
serialize access due to read/write dependencies among transactions
DETAIL:  Reason code: Canceled on identification as a pivot, during write.
HINT:  The transaction might succeed if retried. [for Statement "        UPDATE 
runvars SET val=?
            WHERE  flight=? AND job=? AND name=?
" with ParamValues: 1='151765.build-i386-pvops', 2='151787', 
3='test-amd64-i386-libvirt-xsm', 4='kernbuildjob']
DB conflict (messages above may refer); retrying...
Populating 151787...
Need 151787.test-amd64-i386-libvirt-xsm (like 151754)
Creating 151787.test-amd64-i386-libvirt-xsm (copying from 151754)
Need 151787.build-i386-xsm (like 151754)
 revision_ovmf=804666c86e7b6f04fe5c5cfdb13199c19e0e99b0
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=933ebad2470a169504799a1d95b8e410bd9847ef
 revision_seabios=f21b5a4aeb020f2a5e2c6503f906a9349dd2f069
 revision_xen=c9115affa6f83aebe29ae9cbf503aa163911a5bb
Can reuse build 151765.build-i386-xsm.
Need 151787.build-i386-pvops (like 151754)
 revision_linux=b98aebd298246df37b472c52a2ee1023256d02e3
 revision_linuxfirmware=c530a75c1e6a472b0eb9558310b518f0dfcd8860
Can reuse build-kern 151765.build-i386-pvops.
Need 151787.build-i386-libvirt (like 151754)
 revision_libvirt=6f894a29d812381ffaf8e321f710ceb4bef8f944
 revision_libvirt_keycodemapdb=317d3eeb963a515e15a63fa356d8ebcda7041a51
 revision_xen=c9115affa6f83aebe29ae9cbf503aa163911a5bb
Creating 151787.build-i386-libvirt (copying from 151754)
Need 151787.build-i386 (like 151754)
 revision_ovmf=804666c86e7b6f04fe5c5cfdb13199c19e0e99b0
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=933ebad2470a169504799a1d95b8e410bd9847ef
 revision_seabios=f21b5a4aeb020f2a5e2c6503f906a9349dd2f069
 revision_xen=c9115affa6f83aebe29ae9cbf503aa163911a5bb
Searching for build-i386 (like 151754) to reuse...
Can reuse build 151765.build-i386.
DB confict (err=7 state=40001): DBD::Pg::st execute failed: ERROR:  could not 
serialize access due to read/write dependencies among transactions
DETAIL:  Reason code: Canceled on identification as a pivot, during write.
HINT:  The transaction might succeed if retried. [for Statement "        UPDATE 
runvars SET val=?
            WHERE  flight=? AND job=? AND name=?
" with ParamValues: 1='151765.build-i386', 2='151787', 3='build-i386-libvirt', 
4='buildjob']
DB conflict (messages above may refer); retrying...
Populating 151787...
Need 151787.test-amd64-i386-libvirt-xsm (like 151754)
Creating 151787.test-amd64-i386-libvirt-xsm (copying from 151754)
Need 151787.build-i386-xsm (like 151754)
 revision_ovmf=804666c86e7b6f04fe5c5cfdb13199c19e0e99b0
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=933ebad2470a169504799a1d95b8e410bd9847ef
 revision_seabios=f21b5a4aeb020f2a5e2c6503f906a9349dd2f069
 revision_xen=c9115affa6f83aebe29ae9cbf503aa163911a5bb
Can reuse build 151765.build-i386-xsm.
Need 151787.build-i386-pvops (like 151754)
 revision_linux=b98aebd298246df37b472c52a2ee1023256d02e3
 revision_linuxfirmware=c530a75c1e6a472b0eb9558310b518f0dfcd8860
Can reuse build-kern 151765.build-i386-pvops.
Need 151787.build-i386-libvirt (like 151754)
 revision_libvirt=6f894a29d812381ffaf8e321f710ceb4bef8f944
 revision_libvirt_keycodemapdb=317d3eeb963a515e15a63fa356d8ebcda7041a51
 revision_xen=c9115affa6f83aebe29ae9cbf503aa163911a5bb
Creating 151787.build-i386-libvirt (copying from 151754)
Need 151787.build-i386 (like 151754)
 revision_ovmf=804666c86e7b6f04fe5c5cfdb13199c19e0e99b0
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=933ebad2470a169504799a1d95b8e410bd9847ef
 revision_seabios=f21b5a4aeb020f2a5e2c6503f906a9349dd2f069
 revision_xen=c9115affa6f83aebe29ae9cbf503aa163911a5bb
Can reuse build 151765.build-i386.
Need 151787.build-amd64-xsm (like 151754)
 revision_ovmf=804666c86e7b6f04fe5c5cfdb13199c19e0e99b0
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=933ebad2470a169504799a1d95b8e410bd9847ef
 revision_seabios=f21b5a4aeb020f2a5e2c6503f906a9349dd2f069
 revision_xen=c9115affa6f83aebe29ae9cbf503aa163911a5bb
Searching for build-amd64-xsm (like 151754) to reuse...
DB confict (err=7 state=40001): DBD::Pg::db selectrow_hashref failed: ERROR:  
could not serialize access due to read/write dependencies among transactions
DETAIL:  Reason code: Canceled on identification as a pivot, during conflict 
out checking.
HINT:  The transaction might succeed if retried. [for Statement "            
SELECT  *
            FROM    flights JOIN jobs j USING (flight)
            WHERE   j.job=?
            AND     j.status='pass'
            AND     (blessing='real' OR  blessing='real-bisect')
            AND     (TRUE)
            AND     0 = ( SELECT count(*)
                          FROM
                              ( SELECT name,val
                                FROM   runvars
                                WHERE  runvars.flight = flights.flight
                                  AND  job=? AND synth='f'
                              ) o
                          FULL OUTER JOIN
                              bisection_runvars want
                          USING (name)
                          WHERE (o.val = want.val) IS NOT TRUE
                        )
            ORDER BY flights.started desc
            LIMIT 1
"]
DB conflict (messages above may refer); retrying...
Populating 151787...
Need 151787.test-amd64-i386-libvirt-xsm (like 151754)
Creating 151787.test-amd64-i386-libvirt-xsm (copying from 151754)
Need 151787.build-i386-xsm (like 151754)
 revision_ovmf=804666c86e7b6f04fe5c5cfdb13199c19e0e99b0
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=933ebad2470a169504799a1d95b8e410bd9847ef
 revision_seabios=f21b5a4aeb020f2a5e2c6503f906a9349dd2f069
 revision_xen=c9115affa6f83aebe29ae9cbf503aa163911a5bb
Can reuse build 151765.build-i386-xsm.
Need 151787.build-i386-pvops (like 151754)
 revision_linux=b98aebd298246df37b472c52a2ee1023256d02e3
 revision_linuxfirmware=c530a75c1e6a472b0eb9558310b518f0dfcd8860
Can reuse build-kern 151765.build-i386-pvops.
Need 151787.build-i386-libvirt (like 151754)
 revision_libvirt=6f894a29d812381ffaf8e321f710ceb4bef8f944
 revision_libvirt_keycodemapdb=317d3eeb963a515e15a63fa356d8ebcda7041a51
 revision_xen=c9115affa6f83aebe29ae9cbf503aa163911a5bb
Creating 151787.build-i386-libvirt (copying from 151754)
Need 151787.build-i386 (like 151754)
 revision_ovmf=804666c86e7b6f04fe5c5cfdb13199c19e0e99b0
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=933ebad2470a169504799a1d95b8e410bd9847ef
 revision_seabios=f21b5a4aeb020f2a5e2c6503f906a9349dd2f069
 revision_xen=c9115affa6f83aebe29ae9cbf503aa163911a5bb
Can reuse build 151765.build-i386.
Need 151787.build-amd64-xsm (like 151754)
 revision_ovmf=804666c86e7b6f04fe5c5cfdb13199c19e0e99b0
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=933ebad2470a169504799a1d95b8e410bd9847ef
 revision_seabios=f21b5a4aeb020f2a5e2c6503f906a9349dd2f069
 revision_xen=c9115affa6f83aebe29ae9cbf503aa163911a5bb
Searching for build-amd64-xsm (like 151754) to reuse...
Can reuse build 151765.build-amd64-xsm.
DB confict (err=7 state=40001): DBD::Pg::st execute failed: ERROR:  could not 
serialize access due to read/write dependencies among transactions
DETAIL:  Reason code: Canceled on identification as a pivot, during write.
HINT:  The transaction might succeed if retried. [for Statement "        UPDATE 
runvars SET val=?
            WHERE  flight=? AND job=? AND name=?
" with ParamValues: 1='151765.build-amd64-xsm', 2='151787', 
3='test-amd64-i386-libvirt-xsm', 4='xenbuildjob']
DB conflict (messages above may refer); retrying...
Populating 151787...
Need 151787.test-amd64-i386-libvirt-xsm (like 151754)
Creating 151787.test-amd64-i386-libvirt-xsm (copying from 151754)
Need 151787.build-i386-xsm (like 151754)
 revision_ovmf=804666c86e7b6f04fe5c5cfdb13199c19e0e99b0
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=933ebad2470a169504799a1d95b8e410bd9847ef
 revision_seabios=f21b5a4aeb020f2a5e2c6503f906a9349dd2f069
 revision_xen=c9115affa6f83aebe29ae9cbf503aa163911a5bb
Can reuse build 151765.build-i386-xsm.
Need 151787.build-i386-pvops (like 151754)
 revision_linux=b98aebd298246df37b472c52a2ee1023256d02e3
 revision_linuxfirmware=c530a75c1e6a472b0eb9558310b518f0dfcd8860
Can reuse build-kern 151765.build-i386-pvops.
Need 151787.build-i386-libvirt (like 151754)
 revision_libvirt=6f894a29d812381ffaf8e321f710ceb4bef8f944
 revision_libvirt_keycodemapdb=317d3eeb963a515e15a63fa356d8ebcda7041a51
 revision_xen=c9115affa6f83aebe29ae9cbf503aa163911a5bb
Creating 151787.build-i386-libvirt (copying from 151754)
Need 151787.build-i386 (like 151754)
 revision_ovmf=804666c86e7b6f04fe5c5cfdb13199c19e0e99b0
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=933ebad2470a169504799a1d95b8e410bd9847ef
 revision_seabios=f21b5a4aeb020f2a5e2c6503f906a9349dd2f069
 revision_xen=c9115affa6f83aebe29ae9cbf503aa163911a5bb
Can reuse build 151765.build-i386.
Need 151787.build-amd64-xsm (like 151754)
 revision_ovmf=804666c86e7b6f04fe5c5cfdb13199c19e0e99b0
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=933ebad2470a169504799a1d95b8e410bd9847ef
 revision_seabios=f21b5a4aeb020f2a5e2c6503f906a9349dd2f069
 revision_xen=c9115affa6f83aebe29ae9cbf503aa163911a5bb
Can reuse build 151765.build-amd64-xsm.
Checking for flail (since 144885)...

*** Flailing - >=5 identical flights to no useful effect ***
  Bisector is flailing: >=5 identical flights generated.
  Problem occurs when attempting to test this revision:
   6f894a29d812381ffaf8e321f710ceb4bef8f944 
317d3eeb963a515e15a63fa356d8ebcda7041a51 
b98aebd298246df37b472c52a2ee1023256d02e3 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
804666c86e7b6f04fe5c5cfdb13199c19e0e99b0 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
933ebad2470a169504799a1d95b8e410bd9847ef 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
c9115affa6f83aebe29ae9cbf503aa163911a5bb
  
  Identical previous flights on this branch:
   151784  started 2020-07-10 08:00:22 Z  blessed real-bisect
   151781  started 2020-07-10 06:38:53 Z  blessed real-bisect
   151776  started 2020-07-10 04:18:34 Z  blessed real-bisect
   151773  started 2020-07-10 02:02:36 Z  blessed real-bisect
   151771  started 2020-07-10 00:35:30 Z  blessed real-bisect
   151787  just generated