[qemu-mainline bisection] 148481: testing test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict

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

branch xen-unstable
xenbranch xen-unstable
job test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict
testid debian-hvm-install

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-xl-qemuu-dmrestrict-amd64-dmrestrict.debian-hvm-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-xl-qemuu-dmrestrict-amd64-dmrestrict.debian-hvm-install
 --summary-out=tmp/148481.bisection-summary --basis-template=144861 
--blessings=real,real-bisect --flight=148481 qemu-mainline 
test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict debian-hvm-install
Searching for failure / basis pass:
 148421 fail [host=huxelrebe1] / 147546 [host=italia0] 147482 [host=rimava1] 
147415 [host=albana1] 147325 [host=godello1] 147241 [host=albana0] 147161 
[host=debina1] 147088 [host=huxelrebe0] 147032 [host=godello0] 146978 
[host=fiano0] 145664 [host=huxelrebe0] 145649 [host=rimava1] 145624 
[host=italia0] 145592 [host=chardonnay1] 145573 [host=fiano1] 145547 
[host=albana1] 145535 [host=debina1] 145518 [host=elbling1] 145502 
[host=pinot1] 145486 [host=godello0] 145472 [host=godello1] 145463 ok.
Failure / basis pass flights: 148421 / 145463
(tree with no url: minios)
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 c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
a3e25cc8a1dd3d1ea24ed02f90c44221e015e965 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
ba29883206d92a29ad5a466e679ccfc2ee6132ef 
24d3938ca96a6420ec1a5f1f8479f90f2e9fdd56 
0d99c909d7e1cbe69329a00f7772946f10a7865b
Basis pass b98aebd298246df37b472c52a2ee1023256d02e3 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
a5abd9cc2cebe7fac001f7bb7b647c47cf54af1a 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
dd5b0f95490883cd8bc7d070db8de70d5c979cbc 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
0cd791c499bdc698d14a24050ec56d60b45732e0
Generating revisions with ./adhoc-revtuple-generator  
git://xenbits.xen.org/linux-pvops.git#b98aebd298246df37b472c52a2ee1023256d02e3-c3038e718a19fc596f7b1baba0f83d5146dc7784
 
git://xenbits.xen.org/osstest/linux-firmware.git#c530a75c1e6a472b0eb9558310b518f0dfcd8860-c530a75c1e6a472b0eb9558310b518f0dfcd8860
 
git://xenbits.xen.org/osstest/ovmf.git#a5abd9cc2cebe7fac001f7bb7b647c47cf54af1a-a3e25cc8a1dd3d1ea24ed02f90c44221e015e965
 git://xenbits.xen.org/qemu-xen-traditional.git#d0d8ad39ecb51cd7497cd524484\
 fe09f50876798-d0d8ad39ecb51cd7497cd524484fe09f50876798 
git://git.qemu.org/qemu.git#dd5b0f95490883cd8bc7d070db8de70d5c979cbc-ba29883206d92a29ad5a466e679ccfc2ee6132ef
 
git://xenbits.xen.org/osstest/seabios.git#f21b5a4aeb020f2a5e2c6503f906a9349dd2f069-24d3938ca96a6420ec1a5f1f8479f90f2e9fdd56
 
git://xenbits.xen.org/xen.git#0cd791c499bdc698d14a24050ec56d60b45732e0-0d99c909d7e1cbe69329a00f7772946f10a7865b
adhoc-revtuple-generator: tree discontiguous: linux-pvops
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 94688 nodes in revision graph
Searching for test results:
 145195 pass b98aebd298246df37b472c52a2ee1023256d02e3 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
a5abd9cc2cebe7fac001f7bb7b647c47cf54af1a 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
dd5b0f95490883cd8bc7d070db8de70d5c979cbc 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
0cd791c499bdc698d14a24050ec56d60b45732e0
 145206 [host=rimava1]
 145270 [host=godello0]
 145242 [host=elbling0]
 145221 [host=albana0]
 145255 [host=italia0]
 145287 [host=pinot1]
 145301 [host=albana1]
 145313 [host=chardonnay0]
 145328 [host=godello1]
 145343 [host=fiano1]
 145358 [host=chardonnay1]
 145388 [host=rimava1]
 145373 [host=debina1]
 145401 [host=huxelrebe0]
 145413 [host=pinot0]
 145425 [host=fiano0]
 145438 [host=italia0]
 145486 [host=godello0]
 145463 pass b98aebd298246df37b472c52a2ee1023256d02e3 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
a5abd9cc2cebe7fac001f7bb7b647c47cf54af1a 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
dd5b0f95490883cd8bc7d070db8de70d5c979cbc 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
0cd791c499bdc698d14a24050ec56d60b45732e0
 145449 [host=albana0]
 145472 [host=godello1]
 145502 [host=pinot1]
 145518 [host=elbling1]
 145547 [host=albana1]
 145535 [host=debina1]
 145573 [host=fiano1]
 145592 [host=chardonnay1]
 145624 [host=italia0]
 145698 []
 145664 [host=huxelrebe0]
 145649 [host=rimava1]
 145692 []
 145681 []
 145685 []
 145716 []
 145722 []
 145707 []
 145730 []
 145736 []
 145743 []
 145750 []
 145777 []
 145756 []
 145795 []
 145759 []
 145765 []
 145782 []
 145770 []
 145808 []
 145802 []
 145789 []
 145816 []
 145823 []
 145829 []
 145834 []
 145845 []
 145852 []
 145859 []
 145908 []
 145866 []
 145895 []
 145871 []
 145923 []
 145877 []
 145884 []
 145915 []
 145888 []
 145900 []
 145930 []
 145939 []
 145934 []
 145947 []
 145954 []
 145959 []
 145964 []
 145975 []
 145980 []
 146010 []
 146012 []
 146031 []
 145985 []
 146013 []
 146033 []
 146015 []
 145990 []
 146046 []
 145996 []
 146034 []
 146017 []
 146000 []
 146049 []
 146036 []
 146022 []
 146003 []
 146023 []
 146037 []
 146025 []
 146060 []
 146027 []
 146052 []
 146029 []
 146040 []
 146042 []
 146062 []
 146053 []
 146043 []
 146054 []
 146045 []
 146055 []
 146057 []
 146063 []
 146070 []
 146067 []
 146095 []
 146073 []
 146085 []
 146160 []
 146109 []
 146185 []
 146204 []
 146216 []
 146235 []
 146261 []
 146268 []
 146284 []
 146295 []
 146302 []
 146307 []
 146343 []
 146349 []
 146322 []
 146363 []
 146336 []
 146372 []
 146382 []
 146356 []
 146400 []
 146388 []
 146387 []
 146375 []
 146403 []
 146415 []
 146416 []
 146397 []
 146409 []
 146418 []
 146432 []
 146422 []
 146453 []
 146496 []
 146439 []
 146481 []
 146483 []
 146448 []
 146465 []
 146529 []
 146497 []
 146485 []
 146473 []
 146499 []
 146488 []
 146507 []
 146475 []
 146491 []
 146493 []
 146502 []
 146527 []
 146516 []
 146506 []
 146522 []
 146513 []
 146519 []
 146515 []
 146520 []
 146525 []
 146540 []
 146538 []
 146532 []
 146541 []
 146550 []
 146547 []
 146643 []
 146553 []
 146582 []
 146556 []
 146617 []
 146558 []
 146602 []
 146561 []
 146583 []
 146566 []
 146570 []
 146572 []
 146591 []
 146608 []
 146576 []
 146579 []
 146595 []
 146622 []
 146598 []
 146613 []
 146638 []
 146631 []
 146627 []
 146637 []
 146647 []
 146652 []
 146658 []
 146669 []
 146673 []
 146722 []
 146702 []
 146677 []
 146707 []
 146710 []
 146680 []
 146727 []
 146688 []
 146711 []
 146729 []
 146692 []
 146696 []
 146731 []
 146717 []
 146752 []
 146742 []
 146734 []
 146758 []
 146736 []
 146747 []
 146738 []
 146770 []
 146755 []
 146749 []
 146766 []
 146764 []
 146773 []
 146774 []
 146779 []
 146782 []
 146794 []
 146784 []
 146789 []
 146793 []
 146795 []
 146800 []
 146802 []
 146807 []
 146836 []
 146892 []
 146840 []
 146844 []
 146875 []
 146978 [host=fiano0]
 146922 []
 147088 [host=huxelrebe0]
 147032 [host=godello0]
 147241 [host=albana0]
 147161 [host=debina1]
 147325 [host=godello1]
 147415 [host=albana1]
 147546 [host=italia0]
 147482 [host=rimava1]
 147641 fail irrelevant
 147710 fail irrelevant
 147758 fail irrelevant
 147821 fail irrelevant
 148010 fail irrelevant
 148184 fail irrelevant
 148120 fail irrelevant
 148261 fail irrelevant
 148421 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
a3e25cc8a1dd3d1ea24ed02f90c44221e015e965 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
ba29883206d92a29ad5a466e679ccfc2ee6132ef 
24d3938ca96a6420ec1a5f1f8479f90f2e9fdd56 
0d99c909d7e1cbe69329a00f7772946f10a7865b
 148340 fail irrelevant
 148456 pass b98aebd298246df37b472c52a2ee1023256d02e3 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
a5abd9cc2cebe7fac001f7bb7b647c47cf54af1a 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
dd5b0f95490883cd8bc7d070db8de70d5c979cbc 
f21b5a4aeb020f2a5e2c6503f906a9349dd2f069 
0cd791c499bdc698d14a24050ec56d60b45732e0
 148466 fail irrelevant
 148468 fail irrelevant
 148471 fail irrelevant
 148472 fail irrelevant
 148473 fail irrelevant
 148475 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
4c0f6e349d32cf27a7104ddd3e729d6ebc88ea70 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
bdfd66788349acc43cd3f1298718ad491663cfcc 
76551856b28d227cb0386a1ab0e774329b941f7d 
d6e732c32a82eb8f03c1bf86c6bc530f24dc05b3
 148480 fail c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
a3e25cc8a1dd3d1ea24ed02f90c44221e015e965 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
ba29883206d92a29ad5a466e679ccfc2ee6132ef 
24d3938ca96a6420ec1a5f1f8479f90f2e9fdd56 
0d99c909d7e1cbe69329a00f7772946f10a7865b
Searching for interesting versions
 Result found: flight 145195 (pass), for basis pass
 Result found: flight 148421 (fail), for basis failure
 Repro found: flight 148456 (pass), for basis pass
 Repro found: flight 148480 (fail), for basis failure
 6561517918427169430 revisions at c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
4c0f6e349d32cf27a7104ddd3e729d6ebc88ea70 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
16e15a73089102c3d8846792d514e769300fcc3c 
76551856b28d227cb0386a1ab0e774329b941f7d 
d6e732c32a82eb8f03c1bf86c6bc530f24dc05b3
Looking 3280758959213584715 below c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
4c0f6e349d32cf27a7104ddd3e729d6ebc88ea70 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
16e15a73089102c3d8846792d514e769300fcc3c 
76551856b28d227cb0386a1ab0e774329b941f7d 
d6e732c32a82eb8f03c1bf86c6bc530f24dc05b3.
Should test c3038e718a19fc596f7b1baba0f83d5146dc7784 
c530a75c1e6a472b0eb9558310b518f0dfcd8860 
4c0f6e349d32cf27a7104ddd3e729d6ebc88ea70 
d0d8ad39ecb51cd7497cd524484fe09f50876798 
a4c7ed8b89e8919ddb71c78c4f42b8fdc455ac27 
76551856b28d227cb0386a1ab0e774329b941f7d 
9649cef3b3a7eaca1347154ea7f274586d48bc29.
dot: graph is too large for cairo-renderer bitmaps. Scaling by 0.292502 to fit
pnmtopng: 73 colors found
Revision graph left in 
/home/logs/results/bisect/qemu-mainline/test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict.debian-hvm-install.{dot,ps,png,html,svg}.
Populating 148481...
Need 148481.test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict (like 148421)
Creating 148481.test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict (copying 
from 148421)
Need 148481.build-amd64 (like 148421)
 revision_ovmf=4c0f6e349d32cf27a7104ddd3e729d6ebc88ea70
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=a4c7ed8b89e8919ddb71c78c4f42b8fdc455ac27
 revision_seabios=76551856b28d227cb0386a1ab0e774329b941f7d
 revision_xen=9649cef3b3a7eaca1347154ea7f274586d48bc29
Searching for build-amd64 (like 148421) to reuse...
Can reuse build 148354.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='148354.build-amd64', 2='148481', 
3='test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict', 4='buildjob']
DB conflict (messages above may refer); retrying...
Populating 148481...
Need 148481.test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict (like 148421)
Creating 148481.test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict (copying 
from 148421)
Need 148481.build-amd64 (like 148421)
 revision_ovmf=4c0f6e349d32cf27a7104ddd3e729d6ebc88ea70
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=a4c7ed8b89e8919ddb71c78c4f42b8fdc455ac27
 revision_seabios=76551856b28d227cb0386a1ab0e774329b941f7d
 revision_xen=9649cef3b3a7eaca1347154ea7f274586d48bc29
Can reuse build 148354.build-amd64.
Need 148481.build-amd64-pvops (like 148421)
 revision_linux=c3038e718a19fc596f7b1baba0f83d5146dc7784
 revision_linuxfirmware=c530a75c1e6a472b0eb9558310b518f0dfcd8860
Searching for build-amd64-pvops (like 148421) 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 148481...
Need 148481.test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict (like 148421)
Creating 148481.test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict (copying 
from 148421)
Need 148481.build-amd64 (like 148421)
 revision_ovmf=4c0f6e349d32cf27a7104ddd3e729d6ebc88ea70
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=a4c7ed8b89e8919ddb71c78c4f42b8fdc455ac27
 revision_seabios=76551856b28d227cb0386a1ab0e774329b941f7d
 revision_xen=9649cef3b3a7eaca1347154ea7f274586d48bc29
Can reuse build 148354.build-amd64.
Need 148481.build-amd64-pvops (like 148421)
 revision_linux=c3038e718a19fc596f7b1baba0f83d5146dc7784
 revision_linuxfirmware=c530a75c1e6a472b0eb9558310b518f0dfcd8860
Searching for build-amd64-pvops (like 148421) 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 148481...
Need 148481.test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict (like 148421)
Creating 148481.test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict (copying 
from 148421)
Need 148481.build-amd64 (like 148421)
 revision_ovmf=4c0f6e349d32cf27a7104ddd3e729d6ebc88ea70
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=a4c7ed8b89e8919ddb71c78c4f42b8fdc455ac27
 revision_seabios=76551856b28d227cb0386a1ab0e774329b941f7d
 revision_xen=9649cef3b3a7eaca1347154ea7f274586d48bc29
Can reuse build 148354.build-amd64.
Need 148481.build-amd64-pvops (like 148421)
 revision_linux=c3038e718a19fc596f7b1baba0f83d5146dc7784
 revision_linuxfirmware=c530a75c1e6a472b0eb9558310b518f0dfcd8860
Searching for build-amd64-pvops (like 148421) 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 148481...
Need 148481.test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict (like 148421)
Creating 148481.test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict (copying 
from 148421)
Need 148481.build-amd64 (like 148421)
 revision_ovmf=4c0f6e349d32cf27a7104ddd3e729d6ebc88ea70
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=a4c7ed8b89e8919ddb71c78c4f42b8fdc455ac27
 revision_seabios=76551856b28d227cb0386a1ab0e774329b941f7d
 revision_xen=9649cef3b3a7eaca1347154ea7f274586d48bc29
Can reuse build 148354.build-amd64.
Need 148481.build-amd64-pvops (like 148421)
 revision_linux=c3038e718a19fc596f7b1baba0f83d5146dc7784
 revision_linuxfirmware=c530a75c1e6a472b0eb9558310b518f0dfcd8860
Searching for build-amd64-pvops (like 148421) 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 148481...
Need 148481.test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict (like 148421)
Creating 148481.test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict (copying 
from 148421)
Need 148481.build-amd64 (like 148421)
 revision_ovmf=4c0f6e349d32cf27a7104ddd3e729d6ebc88ea70
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=a4c7ed8b89e8919ddb71c78c4f42b8fdc455ac27
 revision_seabios=76551856b28d227cb0386a1ab0e774329b941f7d
 revision_xen=9649cef3b3a7eaca1347154ea7f274586d48bc29
Can reuse build 148354.build-amd64.
Need 148481.build-amd64-pvops (like 148421)
 revision_linux=c3038e718a19fc596f7b1baba0f83d5146dc7784
 revision_linuxfirmware=c530a75c1e6a472b0eb9558310b518f0dfcd8860
Searching for build-amd64-pvops (like 148421) to reuse...
Can reuse build-kern 148421.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='148421.build-amd64-pvops', 2='148481', 
3='test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict', 4='kernbuildjob']
DB conflict (messages above may refer); retrying...
Populating 148481...
Need 148481.test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict (like 148421)
Creating 148481.test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict (copying 
from 148421)
Need 148481.build-amd64 (like 148421)
 revision_ovmf=4c0f6e349d32cf27a7104ddd3e729d6ebc88ea70
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=a4c7ed8b89e8919ddb71c78c4f42b8fdc455ac27
 revision_seabios=76551856b28d227cb0386a1ab0e774329b941f7d
 revision_xen=9649cef3b3a7eaca1347154ea7f274586d48bc29
Can reuse build 148354.build-amd64.
Need 148481.build-amd64-pvops (like 148421)
 revision_linux=c3038e718a19fc596f7b1baba0f83d5146dc7784
 revision_linuxfirmware=c530a75c1e6a472b0eb9558310b518f0dfcd8860
Can reuse build-kern 148421.build-amd64-pvops.
Need 148481.build-amd64 (like 148421)
 revision_ovmf=4c0f6e349d32cf27a7104ddd3e729d6ebc88ea70
 revision_qemu=d0d8ad39ecb51cd7497cd524484fe09f50876798
 revision_qemuu=a4c7ed8b89e8919ddb71c78c4f42b8fdc455ac27
 revision_seabios=76551856b28d227cb0386a1ab0e774329b941f7d
 revision_xen=9649cef3b3a7eaca1347154ea7f274586d48bc29
Can reuse build 148354.build-amd64.
Checking for flail (since 145195)...
Flight 148481 ready to go.

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