Arvados

From time to time arv-boot fails to start, producing the following output in the case of wb2 integration tests pipelines:

...
18:37:19 sudo is already the newest version (1.8.27-1+deb10u2).
18:37:19 wget is already the newest version (1.20.1-1.1).
18:37:19 xvfb is already the newest version (2:1.20.4-1+deb10u1).
18:37:19 zlib1g-dev is already the newest version (1:1.2.11.dfsg-1).
18:37:19 ca-certificates is already the newest version (20200601~deb10u1).
18:37:20 0 upgraded, 0 newly installed, 0 to remove and 57 not upgraded.
18:37:20 INFO[2020-12-01T21:37:20.117040482Z] ruby 2.5.7 already installed                 
18:37:20 INFO[2020-12-01T21:37:20.122311238Z] go 1.14 already installed                    
18:37:20 INFO[2020-12-01T21:37:20.154868995Z] phantomjs 1.9.8 already installed            
18:37:20 INFO[2020-12-01T21:37:20.156001403Z] geckodriver 0.24.0 already installed         
18:37:20 INFO[2020-12-01T21:37:20.159528791Z] nodejs v8.15.1 already installed             
18:37:20 INFO[2020-12-01T21:37:20.884538246Z] gradle 5.3.1 already installed               
18:37:20 INFO[2020-12-01T21:37:20.886043239Z] locale en_US.UTF-8 already installed         
18:37:20 INFO[2020-12-01T21:37:20.920794537Z] postgresql cluster 11-main is down; trying to start 
18:37:20 2020-12-01 21:37:20.996 UTC [792] LOG:  listening on IPv4 address "127.0.0.1", port 5432
18:37:20 2020-12-01 21:37:20.996 UTC [792] LOG:  could not bind IPv6 address "::1": Cannot assign requested address
18:37:20 2020-12-01 21:37:20.996 UTC [792] HINT:  Is another postmaster already running on port 5432? If not, wait a few seconds and retry.
18:37:21 2020-12-01 21:37:21.001 UTC [792] LOG:  listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432" 
18:37:21 2020-12-01 21:37:21.020 UTC [795] LOG:  database system was shut down at 2020-09-28 16:47:32 UTC
18:37:21 2020-12-01 21:37:21.047 UTC [792] LOG:  database system is ready to accept connections
18:37:22 2020-12-01 21:37:22.009 UTC [803] root@root FATAL:  role "root" does not exist
18:37:22 INFO[2020-12-01T21:37:22.362835777Z] postgresql supports collation en_US          
18:37:22 INFO[2020-12-01T21:37:22.423076600Z] postgresql supports collation en_US.UTF-8    
18:37:22 INFO[2020-12-01T21:37:22.503320541Z] arvados role exists; superuser privileges added, password updated 
18:37:22 INFO[2020-12-01T21:37:22.503416234Z] sent SIGTERM; waiting for postgres to shut down 
18:37:22 2020-12-01 21:37:22.503 UTC [792] LOG:  received smart shutdown request
18:37:22 2020-12-01 21:37:22.508 UTC [792] LOG:  background worker "logical replication launcher" (PID 801) exited with exit code 1
18:37:22 2020-12-01 21:37:22.511 UTC [796] LOG:  shutting down
18:37:22 2020-12-01 21:37:22.577 UTC [792] LOG:  database system is shut down
18:37:22 Launching arvados in test mode...
18:39:58 + set +e +o pipefail
18:39:58 + kill 834
18:39:58 + wait 834
18:39:58 + true
18:39:58 + '[' 1 -eq 1 ']'
18:39:58 + rm -rf /tmp/tmp.1sNVIKdaCS
18:39:59 + echo done
18:39:59 done
18:39:59 make: *** [Makefile:67: integration-tests] Error 1
18:39:59 Build step 'Execute shell' marked build as failure
18:39:59 Archiving artifacts
18:39:59 An attempt to send an e-mail to empty list of recipients, ignored.
18:39:59 Started calculate disk usage of build
18:39:59 Finished Calculation of disk usage of build in 0 seconds
18:39:59 Started calculate disk usage of workspace
18:40:00 Finished Calculation of disk usage of workspace in  1 second
18:40:00 Finished: FAILURE

Attached is the arvados.log file from one of those failures when running the tests locally.