2.1 Daily Builds Broken by Grafana s390x build error

Builds from Maistra brew are failing since last week. Infra is ok, and it seems to be not a PSI instability. It is possible to check more here: https://master-jenkins-csb-servicemesh.apps.ocp4.prod.psi.redhat.com/job/maistra/job/maistra-brewmultiprod/job/dailyBuild-2.1.x/job/master/15/console

See the error log here:

 
36982300 buildArch (servicemesh-proxy-2.1.0-7.el8.src.rpm, s390x): open (s390-066.build.eng.bos.redhat.com) -> FAILED: BuildError: error building package (arch s390x), mock exited with status 1; see build.log or root.log for more information
0 free 5 open 22 done 1 failed
36982263 build (rhossm-2.1-rhel-8-candidate, /rpms/servicemesh-proxy:cb64f91db5da413ae6df16c93a0a4d80e9df42b2): open (x86-038.build.eng.bos.redhat.com) -> FAILED: BuildError: error building package (arch s390x), mock exited with status 1; see build.log or root.log for more information
0 free 4 open 22 done 2 failed
36982297 buildArch (servicemesh-proxy-2.1.0-7.el8.src.rpm, ppc64le): open (ppc-056.build.eng.bos.redhat.com) -> canceled
0 free 3 open 23 done 2 failed
36982295 buildArch (servicemesh-proxy-2.1.0-7.el8.src.rpm, x86_64): open (x86-039.build.eng.bos.redhat.com) -> canceled
0 free 2 open 24 done 2 failed
36982865 buildArch (servicemesh-grafana-7.2.1-1.el8.src.rpm, ppc64le): open (ppc-034.build.eng.bos.redhat.com) -> closed
0 free 1 open 25 done 2 failed
36982837 build (rhossm-2.1-rhel-8-candidate, /rpms/servicemesh-grafana:c1fc18487ae5a7f01ef6d949c6e4a78c7eccd9d3): open (x86-vm-56.build.eng.bos.redhat.com) -> closed
0 free 0 open 26 done 2 failed

36982837 build (rhossm-2.1-rhel-8-candidate, /rpms/servicemesh-grafana:c1fc18487ae5a7f01ef6d949c6e4a78c7eccd9d3) completed successfully
36982263 build (rhossm-2.1-rhel-8-candidate, /rpms/servicemesh-proxy:cb64f91db5da413ae6df16c93a0a4d80e9df42b2) failed
36982260 build (rhossm-2.1-rhel-8-candidate, /rpms/servicemesh-operator:2258c6e5b2f0182ade63bec31d73342aa15f5d29) completed successfully
36982259 build (rhossm-2.1-rhel-8-candidate, /rpms/servicemesh:f3eb4fc4f6d7a26161443ffd567c575a48681b52) completed successfully
36982268 build (rhossm-2.1-rhel-8-candidate, /rpms/servicemesh-proxy-wasm:7816dfe20e081fc74adabf9210b35e6783538f30) completed successfully
36982272 build (rhossm-2.1-rhel-8-candidate, /rpms/servicemesh-prometheus:227d6b6f7145b761272c0562b339ffc33394b876) completed successfully
+ '[' '!' 0 -eq 0 ']'
++ egrep ' 0 free *0 open *[1-9][0-9] done *0 failed' watch-tasks.log
++ sed -e 's+^[^1-9]+' -e 's done.$++'
+ successCount=
+ '[' -z '' ']'
+ echo 'It doesn'\''t look like all tasks finished successfully. Check /tmp/workspace/ultiprod_dailyBuild-2.1.x_master/source-2.1/rpms/logs/watch-tasks.log'
+ exit 1
It doesn't look like all tasks finished successfully. Check /tmp/workspace/ultiprod_dailyBuild-2.1.x_master/source-2.1/rpms/logs/watch-tasks.log
++ print_error_message 'Error. Build terminated'
++ local 'msg=Error. Build terminated'
++ '[' dumb = dumb ']'
++ printf '\n%-6s' ' [ERR] ---->'
++ printf '%-6s\n' ' Error. Build terminated'
++ exit 1