[qemu-mainline bisection] 151748: testing test-amd64-amd64-libvirt-vhd

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

branch xen-unstable
xenbranch xen-unstable
job test-amd64-amd64-libvirt-vhd
testid debian-di-install

Tree: libvirt git://xenbits.xen.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://git.qemu.org/qemu.git
Tree: seabios git://xenbits.xen.org/osstest/seabios.git
Tree: xen git://xenbits.xen.org/xen.git

For bisection revision-tuple graph see:
   
http://logs.test-lab.xenproject.org/osstest/results/bisect/qemu-mainline/test-amd64-amd64-libvirt-vhd.debian-di-install.html
Revision IDs in each graph node refer, respectively, to the Trees above.

----------------------------------------
Running cs-bisection-step 
--graph-out=/home/logs/results/bisect/qemu-mainline/test-amd64-amd64-libvirt-vhd.debian-di-install
 --summary-out=tmp/151748.bisection-summary --basis-template=151065 
--blessings=real,real-bisect --flight=151748 qemu-mainline 
test-amd64-amd64-libvirt-vhd debian-di-install
Searching for failure / basis pass:
 151721 fail [host=pinot0] / 151149 [host=chardonnay0] 151101 [host=huxelrebe1] 
151065 [host=huxelrebe0] 151047 [host=elbling0] 150970 [host=albana1] 150930 
[host=godello1] 150916 [host=elbling1] 150909 [host=rimava1] 150899 
[host=italia0] 150895 [host=albana0] 150831 [host=pinot1] 150694 [host=debina0] 
150631 [host=fiano1] 150608 [host=debina1] 150593 [host=godello0] 150585 
[host=fiano0] 150532 [host=huxelrebe0] 150492 [host=chardonnay0] 150457 ok.
Failure / basis pass flights: 151721 / 150457
(tree with no url: minios)
(tree in basispass but not in latest: libvirt_gnulib)
Tree: libvirt git://xenbits.xen.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://git.qemu.org/qemu.git
Tree: seabios git://xenbits.xen.org/osstest/seabios.git
Tree: xen git://xenbits.xen.org/xen.git
Latest e7998ebeaf15e4e8825be0dd97aa1316f194f00d 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
627d1d6693b0594d257dbe1a3363a8d4bd4d8307 
3c659044118e34603161457db9934a34f816d78b 
c8eaf81fd22638691c5bdcc7d723d31fbb80ff6f 
88ab0c15525ced2eefe39220742efe4769089ad8 
f97f99c8d88ebc108f6adc3ba74e87d53ba57c70
Basis pass a1cd25b919509be2645dbe6f952d5263e0d4e4e5 
317d3eeb963a515e15a63fa356d8ebcda7041a51 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
568eee7cf319fa95183c8d3b5e8dcf6e078ab8b3 
3c659044118e34603161457db9934a34f816d78b 
a20ab81d22300cca80325c284f21eefee99aa740 
2e3de6253422112ae43e608661ba94ea6b345694 
9f3e9139fa6c3d620eb08dff927518fc88200b8d
Generating revisions with ./adhoc-revtuple-generator  
git://xenbits.xen.org/libvirt.git#a1cd25b919509be2645dbe6f952d5263e0d4e4e5-e7998ebeaf15e4e8825be0dd97aa1316f194f00d
 
https://gitlab.com/keycodemap/keycodemapdb.git#317d3eeb963a515e15a63fa356d8ebcda7041a51-27acf0ef828bf719b2053ba398b195829413dbdd
 
git://xenbits.xen.org/linux-pvops.git#c3038e718a19fc596f7b1baba0f83d5146dc7784-c3038e718a19fc596f7b1baba0f83d5146dc7784
 
git://xenbits.xen.org/osstest/linux-firmware.git#c530a75c1e6a472b0eb9558310b518f0\
 dfcd8860-c530a75c1e6a472b0eb9558310b518f0dfcd8860 
git://xenbits.xen.org/osstest/ovmf.git#568eee7cf319fa95183c8d3b5e8dcf6e078ab8b3-627d1d6693b0594d257dbe1a3363a8d4bd4d8307
 
git://xenbits.xen.org/qemu-xen-traditional.git#3c659044118e34603161457db9934a34f816d78b-3c659044118e34603161457db9934a34f816d78b
 
git://git.qemu.org/qemu.git#a20ab81d22300cca80325c284f21eefee99aa740-c8eaf81fd22638691c5bdcc7d723d31fbb80ff6f
 
git://xenbits.xen.org/osstest/seabios.git#2e3de6253422112ae43e608661ba94ea6b345694-88ab0c1\
 5525ced2eefe39220742efe4769089ad8 
git://xenbits.xen.org/xen.git#9f3e9139fa6c3d620eb08dff927518fc88200b8d-f97f99c8d88ebc108f6adc3ba74e87d53ba57c70
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.

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.
Loaded 53410 nodes in revision graph
Searching for test results:
 150457 pass a1cd25b919509be2645dbe6f952d5263e0d4e4e5 
317d3eeb963a515e15a63fa356d8ebcda7041a51 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
568eee7cf319fa95183c8d3b5e8dcf6e078ab8b3 
3c659044118e34603161457db9934a34f816d78b 
a20ab81d22300cca80325c284f21eefee99aa740 
2e3de6253422112ae43e608661ba94ea6b345694 
9f3e9139fa6c3d620eb08dff927518fc88200b8d
 150492 [host=chardonnay0]
 150532 [host=huxelrebe0]
 150585 [host=fiano0]
 150593 [host=godello0]
 150631 [host=fiano1]
 150608 [host=debina1]
 150694 [host=debina0]
 150831 [host=pinot1]
 150909 [host=rimava1]
 150930 [host=godello1]
 150916 [host=elbling1]
 150895 [host=albana0]
 150899 [host=italia0]
 150970 [host=albana1]
 151047 [host=elbling0]
 151101 [host=huxelrebe1]
 151065 [host=huxelrebe0]
 151149 [host=chardonnay0]
 151221 fail irrelevant
 151175 fail irrelevant
 151241 fail irrelevant
 151286 fail irrelevant
 151269 fail irrelevant
 151328 fail irrelevant
 151304 fail irrelevant
 151377 fail irrelevant
 151353 fail c5815b31976f3982d18c7f6c1367ab6e403eb7eb 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
1a992030522622c42aa063788b3276789c56c1e1 
3c659044118e34603161457db9934a34f816d78b 
d4b78317b7cf8c0c635b70086503813f79ff21ec 
2e3de6253422112ae43e608661ba94ea6b345694 
fde76f895d0aa817a1207d844d793239c6639bc6
 151399 fail irrelevant
 151414 fail irrelevant
 151435 fail irrelevant
 151459 fail d482cf6bef484e697f1dbb99f2504e7d67b149e7 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
0f01cec52f4794777feb067e4fa0bfcedfdc124e 
3c659044118e34603161457db9934a34f816d78b 
e7651153a8801dad6805d450ea8bef9b46c1adf5 
88ab0c15525ced2eefe39220742efe4769089ad8 
88cfd062e8318dfeb67c7d2eb50b6cd224b0738a
 151471 fail irrelevant
 151485 fail irrelevant
 151500 fail irrelevant
 151518 fail e7998ebeaf15e4e8825be0dd97aa1316f194f00d 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
00217f1919270007d7a911f89b32e39b9dcaa907 
3c659044118e34603161457db9934a34f816d78b 
fc1bff958998910ec8d25db86cd2f53ff125f7ab 
88ab0c15525ced2eefe39220742efe4769089ad8 
23ca7ec0ba620db52a646d80e22f9703a6589f66
 151547 fail irrelevant
 151598 fail irrelevant
 151577 fail irrelevant
 151622 fail e7998ebeaf15e4e8825be0dd97aa1316f194f00d 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
627d1d6693b0594d257dbe1a3363a8d4bd4d8307 
3c659044118e34603161457db9934a34f816d78b 
7b7515702012219410802a168ae4aa45b72a44df 
88ab0c15525ced2eefe39220742efe4769089ad8 
be63d9d47f571a60d70f8fb630c03871312d9655
 151656 fail e7998ebeaf15e4e8825be0dd97aa1316f194f00d 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
627d1d6693b0594d257dbe1a3363a8d4bd4d8307 
3c659044118e34603161457db9934a34f816d78b 
eb6490f544388dd24c0d054a96dd304bc7284450 
88ab0c15525ced2eefe39220742efe4769089ad8 
be63d9d47f571a60d70f8fb630c03871312d9655
 151634 fail e7998ebeaf15e4e8825be0dd97aa1316f194f00d 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
627d1d6693b0594d257dbe1a3363a8d4bd4d8307 
3c659044118e34603161457db9934a34f816d78b 
eb6490f544388dd24c0d054a96dd304bc7284450 
88ab0c15525ced2eefe39220742efe4769089ad8 
be63d9d47f571a60d70f8fb630c03871312d9655
 151645 fail e7998ebeaf15e4e8825be0dd97aa1316f194f00d 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
627d1d6693b0594d257dbe1a3363a8d4bd4d8307 
3c659044118e34603161457db9934a34f816d78b 
eb6490f544388dd24c0d054a96dd304bc7284450 
88ab0c15525ced2eefe39220742efe4769089ad8 
be63d9d47f571a60d70f8fb630c03871312d9655
 151669 fail e7998ebeaf15e4e8825be0dd97aa1316f194f00d 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
627d1d6693b0594d257dbe1a3363a8d4bd4d8307 
3c659044118e34603161457db9934a34f816d78b 
eb6490f544388dd24c0d054a96dd304bc7284450 
88ab0c15525ced2eefe39220742efe4769089ad8 
be63d9d47f571a60d70f8fb630c03871312d9655
 151685 fail e7998ebeaf15e4e8825be0dd97aa1316f194f00d 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
627d1d6693b0594d257dbe1a3363a8d4bd4d8307 
3c659044118e34603161457db9934a34f816d78b 
eb6490f544388dd24c0d054a96dd304bc7284450 
88ab0c15525ced2eefe39220742efe4769089ad8 
be63d9d47f571a60d70f8fb630c03871312d9655
 151704 fail e7998ebeaf15e4e8825be0dd97aa1316f194f00d 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
627d1d6693b0594d257dbe1a3363a8d4bd4d8307 
3c659044118e34603161457db9934a34f816d78b 
eb6490f544388dd24c0d054a96dd304bc7284450 
88ab0c15525ced2eefe39220742efe4769089ad8 
be63d9d47f571a60d70f8fb630c03871312d9655
 151737 pass a1cd25b919509be2645dbe6f952d5263e0d4e4e5 
317d3eeb963a515e15a63fa356d8ebcda7041a51 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
568eee7cf319fa95183c8d3b5e8dcf6e078ab8b3 
3c659044118e34603161457db9934a34f816d78b 
a20ab81d22300cca80325c284f21eefee99aa740 
2e3de6253422112ae43e608661ba94ea6b345694 
9f3e9139fa6c3d620eb08dff927518fc88200b8d
 151738 fail e7998ebeaf15e4e8825be0dd97aa1316f194f00d 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
627d1d6693b0594d257dbe1a3363a8d4bd4d8307 
3c659044118e34603161457db9934a34f816d78b 
eb6490f544388dd24c0d054a96dd304bc7284450 
88ab0c15525ced2eefe39220742efe4769089ad8 
be63d9d47f571a60d70f8fb630c03871312d9655
 151721 fail e7998ebeaf15e4e8825be0dd97aa1316f194f00d 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
627d1d6693b0594d257dbe1a3363a8d4bd4d8307 
3c659044118e34603161457db9934a34f816d78b 
c8eaf81fd22638691c5bdcc7d723d31fbb80ff6f 
88ab0c15525ced2eefe39220742efe4769089ad8 
f97f99c8d88ebc108f6adc3ba74e87d53ba57c70
 151741 fail 36b1e8669d85f5dbde4e40a6625df9a78085c2a0 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
1a992030522622c42aa063788b3276789c56c1e1 
3c659044118e34603161457db9934a34f816d78b 
61fee7f45955cd0bf9b79be9fa9c7ebabb5e6a85 
2e3de6253422112ae43e608661ba94ea6b345694 
fde76f895d0aa817a1207d844d793239c6639bc6
 151743 fail e7998ebeaf15e4e8825be0dd97aa1316f194f00d 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
627d1d6693b0594d257dbe1a3363a8d4bd4d8307 
3c659044118e34603161457db9934a34f816d78b 
c8eaf81fd22638691c5bdcc7d723d31fbb80ff6f 
88ab0c15525ced2eefe39220742efe4769089ad8 
f97f99c8d88ebc108f6adc3ba74e87d53ba57c70
 151745 fail f57a8cd3df0167d72b87fdd868a287608a741b73 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
322969adf1fb3d6cfbd613f35121315715aff2ed 
3c659044118e34603161457db9934a34f816d78b 
bae31bfa48b9caecee25da3d5333901a126a06b4 
2e3de6253422112ae43e608661ba94ea6b345694 
fde76f895d0aa817a1207d844d793239c6639bc6
Searching for interesting versions
 Result found: flight 150457 (pass), for basis pass
 Result found: flight 151721 (fail), for basis failure
 Repro found: flight 151737 (pass), for basis pass
 Repro found: flight 151743 (fail), for basis failure
 14480658859 revisions at 96a39aad705f8e37950109d11636085b212af790 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
322969adf1fb3d6cfbd613f35121315715aff2ed 
3c659044118e34603161457db9934a34f816d78b 
bae31bfa48b9caecee25da3d5333901a126a06b4 
2e3de6253422112ae43e608661ba94ea6b345694 
fde76f895d0aa817a1207d844d793239c6639bc6
Looking 7240329429 below 96a39aad705f8e37950109d11636085b212af790 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
322969adf1fb3d6cfbd613f35121315715aff2ed 
3c659044118e34603161457db9934a34f816d78b 
bae31bfa48b9caecee25da3d5333901a126a06b4 
2e3de6253422112ae43e608661ba94ea6b345694 
fde76f895d0aa817a1207d844d793239c6639bc6.
Should test ea3320048897f5279bc49cb49d26f8099706a834 
27acf0ef828bf719b2053ba398b195829413dbdd 
c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
239b50a863704f7960525799eda82de061c7c458 
3c659044118e34603161457db9934a34f816d78b 
eefe34ea4b82c2b47abe28af4cc7247d51553626 
2e3de6253422112ae43e608661ba94ea6b345694 
25636ed707cf1211ce846c7ec58f8643e435d7a7.
dot: graph is too large for cairo-renderer bitmaps. Scaling by 0.219591 to fit
pnmtopng: 85 colors found
Revision graph left in 
/home/logs/results/bisect/qemu-mainline/test-amd64-amd64-libvirt-vhd.debian-di-install.{dot,ps,png,html,svg}.
Populating 151748...
Need 151748.test-amd64-amd64-libvirt-vhd (like 151721)
Creating 151748.test-amd64-amd64-libvirt-vhd (copying from 151721)
Need 151748.build-amd64 (like 151721)
 revision_ovmf=239b50a863704f7960525799eda82de061c7c458
 revision_qemu=3c659044118e34603161457db9934a34f816d78b
 revision_qemuu=eefe34ea4b82c2b47abe28af4cc7247d51553626
 revision_seabios=2e3de6253422112ae43e608661ba94ea6b345694
 revision_xen=25636ed707cf1211ce846c7ec58f8643e435d7a7
Searching for build-amd64 (like 151721) 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 151748...
Need 151748.test-amd64-amd64-libvirt-vhd (like 151721)
Creating 151748.test-amd64-amd64-libvirt-vhd (copying from 151721)
Need 151748.build-amd64 (like 151721)
 revision_ovmf=239b50a863704f7960525799eda82de061c7c458
 revision_qemu=3c659044118e34603161457db9934a34f816d78b
 revision_qemuu=eefe34ea4b82c2b47abe28af4cc7247d51553626
 revision_seabios=2e3de6253422112ae43e608661ba94ea6b345694
 revision_xen=25636ed707cf1211ce846c7ec58f8643e435d7a7
Searching for build-amd64 (like 151721) to reuse...
Can reuse build 151373.build-amd64.
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='151373.build-amd64', 2='151748', 
3='test-amd64-amd64-libvirt-vhd', 4='buildjob']
DB conflict (messages above may refer); retrying...
Populating 151748...
Need 151748.test-amd64-amd64-libvirt-vhd (like 151721)
Creating 151748.test-amd64-amd64-libvirt-vhd (copying from 151721)
Need 151748.build-amd64 (like 151721)
 revision_ovmf=239b50a863704f7960525799eda82de061c7c458
 revision_qemu=3c659044118e34603161457db9934a34f816d78b
 revision_qemuu=eefe34ea4b82c2b47abe28af4cc7247d51553626
 revision_seabios=2e3de6253422112ae43e608661ba94ea6b345694
 revision_xen=25636ed707cf1211ce846c7ec58f8643e435d7a7
Can reuse build 151373.build-amd64.
Need 151748.build-amd64-pvops (like 151721)
 revision_linux=c3038e718a19fc596f7b1baba0f83d5146dc7784
 revision_linuxfirmware=c530a75c1e6a472b0eb9558310b518f0dfcd8860
Searching for build-amd64-pvops (like 151721) 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 151748...
Need 151748.test-amd64-amd64-libvirt-vhd (like 151721)
Creating 151748.test-amd64-amd64-libvirt-vhd (copying from 151721)
Need 151748.build-amd64 (like 151721)
 revision_ovmf=239b50a863704f7960525799eda82de061c7c458
 revision_qemu=3c659044118e34603161457db9934a34f816d78b
 revision_qemuu=eefe34ea4b82c2b47abe28af4cc7247d51553626
 revision_seabios=2e3de6253422112ae43e608661ba94ea6b345694
 revision_xen=25636ed707cf1211ce846c7ec58f8643e435d7a7
Can reuse build 151373.build-amd64.
Need 151748.build-amd64-pvops (like 151721)
 revision_linux=c3038e718a19fc596f7b1baba0f83d5146dc7784
 revision_linuxfirmware=c530a75c1e6a472b0eb9558310b518f0dfcd8860
Searching for build-amd64-pvops (like 151721) 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 151748...
Need 151748.test-amd64-amd64-libvirt-vhd (like 151721)
Creating 151748.test-amd64-amd64-libvirt-vhd (copying from 151721)
Need 151748.build-amd64 (like 151721)
 revision_ovmf=239b50a863704f7960525799eda82de061c7c458
 revision_qemu=3c659044118e34603161457db9934a34f816d78b
 revision_qemuu=eefe34ea4b82c2b47abe28af4cc7247d51553626
 revision_seabios=2e3de6253422112ae43e608661ba94ea6b345694
 revision_xen=25636ed707cf1211ce846c7ec58f8643e435d7a7
Can reuse build 151373.build-amd64.
Need 151748.build-amd64-pvops (like 151721)
 revision_linux=c3038e718a19fc596f7b1baba0f83d5146dc7784
 revision_linuxfirmware=c530a75c1e6a472b0eb9558310b518f0dfcd8860
Searching for build-amd64-pvops (like 151721) to reuse...
Can reuse build-kern 151725.build-amd64-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='151725.build-amd64-pvops', 2='151748', 
3='test-amd64-amd64-libvirt-vhd', 4='kernbuildjob']
DB conflict (messages above may refer); retrying...
Populating 151748...
Need 151748.test-amd64-amd64-libvirt-vhd (like 151721)
Creating 151748.test-amd64-amd64-libvirt-vhd (copying from 151721)
Need 151748.build-amd64 (like 151721)
 revision_ovmf=239b50a863704f7960525799eda82de061c7c458
 revision_qemu=3c659044118e34603161457db9934a34f816d78b
 revision_qemuu=eefe34ea4b82c2b47abe28af4cc7247d51553626
 revision_seabios=2e3de6253422112ae43e608661ba94ea6b345694
 revision_xen=25636ed707cf1211ce846c7ec58f8643e435d7a7
Can reuse build 151373.build-amd64.
Need 151748.build-amd64-pvops (like 151721)
 revision_linux=c3038e718a19fc596f7b1baba0f83d5146dc7784
 revision_linuxfirmware=c530a75c1e6a472b0eb9558310b518f0dfcd8860
Can reuse build-kern 151725.build-amd64-pvops.
Need 151748.build-amd64-libvirt (like 151721)
 revision_libvirt=ea3320048897f5279bc49cb49d26f8099706a834
 revision_libvirt_keycodemapdb=27acf0ef828bf719b2053ba398b195829413dbdd
 revision_xen=25636ed707cf1211ce846c7ec58f8643e435d7a7
Creating 151748.build-amd64-libvirt (copying from 151721)
Need 151748.build-amd64 (like 151721)
 revision_ovmf=239b50a863704f7960525799eda82de061c7c458
 revision_qemu=3c659044118e34603161457db9934a34f816d78b
 revision_qemuu=eefe34ea4b82c2b47abe28af4cc7247d51553626
 revision_seabios=2e3de6253422112ae43e608661ba94ea6b345694
 revision_xen=25636ed707cf1211ce846c7ec58f8643e435d7a7
Can reuse build 151373.build-amd64.
Need 151748.build-amd64 (like 151721)
 revision_ovmf=239b50a863704f7960525799eda82de061c7c458
 revision_qemu=3c659044118e34603161457db9934a34f816d78b
 revision_qemuu=eefe34ea4b82c2b47abe28af4cc7247d51553626
 revision_seabios=2e3de6253422112ae43e608661ba94ea6b345694
 revision_xen=25636ed707cf1211ce846c7ec58f8643e435d7a7
Can reuse build 151373.build-amd64.
Checking for flail (since 150457)...
Flight 151748 ready to go.