[2026-01-01 15:06:56,206][ INFO][PID:4009955] Marking build as starting [2026-01-01 15:06:56,310][ INFO][PID:4009955] Checking that /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/repodata/repomd.xml exists [2026-01-01 15:06:56,316][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:06:56,321][ INFO][PID:4009955] VM allocation process starts [2026-01-01 15:06:56,361][ INFO][PID:4009955] Trying to allocate VM: ResallocHost, ticket_id=614685, requested_tags=['copr_builder', 'arch_x86_64'] [2026-01-01 15:06:59,397][ INFO][PID:4009955] Allocated host ResallocHost, ticket_id=614685, hostname=3.236.255.245, name=aws_x86_64_normalreserved_prod_00882094_20260101_144305, requested_tags=['copr_builder', 'arch_x86_64'] [2026-01-01 15:06:59,397][ INFO][PID:4009955] Allocating ssh connection to builder [2026-01-01 15:06:59,398][ INFO][PID:4009955] Checking that builder machine is OK [2026-01-01 15:06:59,725][ INFO][PID:4009955] Running remote command: copr-builder-ready fedora-rawhide-x86_64 [2026-01-01 15:06:59,940][ INFO][PID:4009955] Red Hat subscription not needed for fedora-rawhide-x86_64 Builder is ready to be used [2026-01-01 15:06:59,941][ INFO][PID:4009955] Filling build.info file with builder info [2026-01-01 15:06:59,943][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:06:59,944][ INFO][PID:4009955] Sending build state back to frontend: { "builds": [ { "timeout": 115200, "frontend_base_url": "https://copr.fedorainfracloud.org", "memory_reqs": 2048, "enable_net": false, "project_owner": "siddhesh", "project_name": "mbp-gcc-16", "project_dirname": "mbp-gcc-16", "submitter": "siddhesh", "ended_on": null, "started_on": 1767280019.9439576, "submitted_on": null, "status": 3, "chroot": "fedora-rawhide-x86_64", "arch": "x86_64", "buildroot_pkgs": [], "task_id": "9964420-fedora-rawhide-x86_64", "build_id": 9964420, "package_name": "userspace-rcu", "package_version": "0.15.5-1", "git_repo": "https://copr-dist-git.fedorainfracloud.org/git/siddhesh/mbp-gcc-16/userspace-rcu", "git_hash": "cf8d8d928e60c2de67214bab05c32d5e22690005", "git_branch": null, "source_type": null, "source_json": null, "pkg_name": null, "pkg_main_version": null, "pkg_epoch": null, "pkg_release": null, "srpm_url": null, "uses_devel_repo": false, "sandbox": "siddhesh/mbp-gcc-16--siddhesh", "results": null, "appstream": false, "allow_user_ssh": false, "ssh_public_keys": null, "storage": 0, "repos": [ { "baseurl": "https://download.copr.fedorainfracloud.org/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/", "id": "copr_base", "name": "Copr repository", "priority": null }, { "baseurl": "https://kojipkgs.fedoraproject.org/repos/f44-build-side-124978/latest/$basearch/", "id": "https_kojipkgs_fedoraproject_org_repos_f44_build_side_124978_latest_basearch", "name": "Additional repo https_kojipkgs_fedoraproject_org_repos_f44_build_side_124978_latest_basearch" } ], "background": true, "fedora_review": false, "isolation": "default", "repo_priority": null, "tags": [ "arch_x86_64" ], "with_opts": [], "without_opts": [], "destdir": "/var/lib/copr/public_html/results/siddhesh/mbp-gcc-16", "results_repo_url": "https://download.copr.fedorainfracloud.org/results/siddhesh/mbp-gcc-16", "result_dir": "09964420-userspace-rcu", "built_packages": "", "id": 9964420, "mockchain_macros": { "copr_username": "siddhesh", "copr_projectname": "mbp-gcc-16", "vendor": "Fedora Project COPR (siddhesh/mbp-gcc-16)" } } ] } [2026-01-01 15:07:00,000][ INFO][PID:4009955] Sending fedora-messaging bus message in build.start [2026-01-01 15:07:00,586][ INFO][PID:4009955] Sending fedora-messaging bus message in chroot.start [2026-01-01 15:07:00,623][ INFO][PID:4009955] Starting remote build: copr-rpmbuild --verbose --drop-resultdir --task-url https://copr.fedorainfracloud.org/backend/get-build-task/9964420-fedora-rawhide-x86_64 --chroot fedora-rawhide-x86_64 --detached [2026-01-01 15:07:00,949][ INFO][PID:4009955] The copr-rpmbuild seems started, per: stdout: stderr: Warning: Permanently added '3.236.255.245' (ED25519) to the list of known hosts. [2026-01-01 15:07:00,950][ INFO][PID:4009955] Downloading the builder-live.log file, attempt 1 [2026-01-01 15:07:00,954][ INFO][PID:4009955] Popen command started: ssh -F /home/copr/.ssh/config mockbuilder@3.236.255.245 copr-rpmbuild-log [2026-01-01 15:07:05,967][ INFO][PID:4009955] Periodic builder liveness probe: alive [2026-01-01 15:07:05,968][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:07:10,976][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:07:15,978][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:07:20,980][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:07:25,981][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:07:30,985][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:07:35,993][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:07:40,996][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:07:45,998][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:07:51,001][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:07:56,011][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:08:01,013][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:08:06,014][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:08:11,016][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:08:16,021][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:08:21,025][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:08:26,030][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:08:31,034][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:08:36,040][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:08:41,046][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:08:46,054][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:08:51,057][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:08:56,060][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:09:01,061][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:09:06,067][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:09:11,069][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:09:16,070][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:09:21,072][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:09:26,079][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:09:31,080][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:09:36,083][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:09:41,085][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:09:46,086][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:09:51,088][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:09:56,089][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:10:01,095][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:10:06,097][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:10:11,100][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:10:16,102][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:10:21,105][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:10:26,108][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:10:31,109][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:10:36,110][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:10:41,112][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:10:46,113][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:10:51,114][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:10:56,118][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:11:01,121][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:11:06,123][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:11:11,130][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:11:16,135][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:11:21,138][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:11:26,141][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:11:31,143][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:11:36,145][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:11:41,148][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:11:46,152][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:11:51,153][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:11:56,155][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:12:01,157][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:12:06,159][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:12:11,160][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:12:16,161][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:12:21,162][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:12:26,164][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:12:31,166][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:12:36,168][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:12:41,169][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:12:46,171][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:12:51,173][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:12:56,176][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:13:01,184][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:13:06,186][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:13:11,187][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:13:16,190][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:13:21,191][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:13:26,192][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:13:31,194][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:13:36,195][ INFO][PID:4009955] Checking for cancel request [2026-01-01 15:13:40,100][ INFO][PID:4009955] Downloading results from builder [2026-01-01 15:13:40,101][ INFO][PID:4009955] rsyncing of mockbuilder@3.236.255.245:/var/lib/copr-rpmbuild/results/ to /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu started [2026-01-01 15:13:40,102][ INFO][PID:4009955] Popen command started: /usr/bin/rsync -rltDvH --chmod=D755,F644 -e 'ssh -F /home/copr/.ssh/config' mockbuilder@3.236.255.245:/var/lib/copr-rpmbuild/results/ /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu/ &> /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu/build-09964420.rsync.log [2026-01-01 15:13:40,371][ INFO][PID:4009955] rsyncing finished. [2026-01-01 15:13:40,372][ INFO][PID:4009955] Releasing VM back to pool [2026-01-01 15:13:40,382][ INFO][PID:4009955] Searching for 'success' file in resultdir [2026-01-01 15:13:40,383][ INFO][PID:4009955] Going to sign pkgs from source: 9964420-fedora-rawhide-x86_64 in chroot: /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64 [2026-01-01 15:13:40,384][ INFO][PID:4009955] Calling '/bin/sign -u siddhesh#mbp-gcc-16@copr.fedorahosted.org -p' (attempt #1) [2026-01-01 15:13:40,559][ INFO][PID:4009955] Calling '/bin/sign -4 -h sha256 -u siddhesh#mbp-gcc-16@copr.fedorahosted.org -r /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu/userspace-rcu-debuginfo-0.15.5-1.fc44.x86_64.rpm' (attempt #1) [2026-01-01 15:13:41,306][ INFO][PID:4009955] signed rpm: /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu/userspace-rcu-debuginfo-0.15.5-1.fc44.x86_64.rpm [2026-01-01 15:13:41,307][ INFO][PID:4009955] Calling '/bin/sign -4 -h sha256 -u siddhesh#mbp-gcc-16@copr.fedorahosted.org -r /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu/userspace-rcu-0.15.5-1.fc44.x86_64.rpm' (attempt #1) [2026-01-01 15:13:41,959][ INFO][PID:4009955] signed rpm: /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu/userspace-rcu-0.15.5-1.fc44.x86_64.rpm [2026-01-01 15:13:41,960][ INFO][PID:4009955] Calling '/bin/sign -4 -h sha256 -u siddhesh#mbp-gcc-16@copr.fedorahosted.org -r /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu/userspace-rcu-devel-0.15.5-1.fc44.x86_64.rpm' (attempt #1) [2026-01-01 15:13:42,773][ INFO][PID:4009955] signed rpm: /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu/userspace-rcu-devel-0.15.5-1.fc44.x86_64.rpm [2026-01-01 15:13:42,774][ INFO][PID:4009955] Calling '/bin/sign -4 -h sha256 -u siddhesh#mbp-gcc-16@copr.fedorahosted.org -r /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu/userspace-rcu-debugsource-0.15.5-1.fc44.x86_64.rpm' (attempt #1) [2026-01-01 15:13:43,512][ INFO][PID:4009955] signed rpm: /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu/userspace-rcu-debugsource-0.15.5-1.fc44.x86_64.rpm [2026-01-01 15:13:43,513][ INFO][PID:4009955] Calling '/bin/sign -4 -h sha256 -u siddhesh#mbp-gcc-16@copr.fedorahosted.org -r /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu/userspace-rcu-0.15.5-1.fc44.src.rpm' (attempt #1) [2026-01-01 15:13:44,264][ INFO][PID:4009955] signed rpm: /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu/userspace-rcu-0.15.5-1.fc44.src.rpm [2026-01-01 15:13:44,265][ INFO][PID:4009955] Sign done [2026-01-01 15:13:44,266][ INFO][PID:4009955] Incremental createrepo run, adding 09964420-userspace-rcu into https://download.copr.fedorainfracloud.org/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64, (auto-create-repo=True) [2026-01-01 15:13:44,268][ INFO][PID:4009955] Running command 'copr-repo --batched /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64 --add 09964420-userspace-rcu --no-appstream-metadata' as PID 4052055 [2026-01-01 15:14:31,219][ INFO][PID:4009955] Finished after 46 seconds with exit code 0 (copr-repo --batched /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64 --add 09964420-userspace-rcu --no-appstream-metadata) [2026-01-01 15:14:31,221][ INFO][PID:4009955] Getting build details [2026-01-01 15:14:31,222][ INFO][PID:4009955] Listing built binary packages in /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu [2026-01-01 15:14:31,223][ INFO][PID:4009955] Built packages: ['userspace-rcu-debugsource 0.15.5', 'userspace-rcu 0.15.5', 'userspace-rcu-debuginfo 0.15.5', 'userspace-rcu-devel 0.15.5'] [2026-01-01 15:14:31,224][ INFO][PID:4009955] build details: {'built_packages': 'userspace-rcu-debugsource 0.15.5\nuserspace-rcu 0.15.5\nuserspace-rcu-debuginfo 0.15.5\nuserspace-rcu-devel 0.15.5'} [2026-01-01 15:14:31,225][ INFO][PID:4009955] Retrieving pubkey [2026-01-01 15:14:31,226][ INFO][PID:4009955] Calling '/bin/sign -u siddhesh#mbp-gcc-16@copr.fedorahosted.org -p' (attempt #1) [2026-01-01 15:14:31,509][ INFO][PID:4009955] Added pubkey for user siddhesh project mbp-gcc-16 into: /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/pubkey.gpg [2026-01-01 15:14:31,510][ INFO][PID:4009955] Finished build: id=9964420 failed=False timeout=115200 destdir=/var/lib/copr/public_html/results/siddhesh/mbp-gcc-16 chroot=fedora-rawhide-x86_64 [2026-01-01 15:14:31,513][ INFO][PID:4009955] Worker succeeded build, took 451.56993889808655 [2026-01-01 15:14:31,515][ INFO][PID:4009955] Sending build state back to frontend: { "builds": [ { "timeout": 115200, "frontend_base_url": "https://copr.fedorainfracloud.org", "memory_reqs": 2048, "enable_net": false, "project_owner": "siddhesh", "project_name": "mbp-gcc-16", "project_dirname": "mbp-gcc-16", "submitter": "siddhesh", "ended_on": 1767280471.5138965, "started_on": 1767280019.9439576, "submitted_on": null, "status": 1, "chroot": "fedora-rawhide-x86_64", "arch": "x86_64", "buildroot_pkgs": [], "task_id": "9964420-fedora-rawhide-x86_64", "build_id": 9964420, "package_name": "userspace-rcu", "package_version": "0.15.5-1", "git_repo": "https://copr-dist-git.fedorainfracloud.org/git/siddhesh/mbp-gcc-16/userspace-rcu", "git_hash": "cf8d8d928e60c2de67214bab05c32d5e22690005", "git_branch": null, "source_type": null, "source_json": null, "pkg_name": null, "pkg_main_version": null, "pkg_epoch": null, "pkg_release": null, "srpm_url": null, "uses_devel_repo": false, "sandbox": "siddhesh/mbp-gcc-16--siddhesh", "results": { "packages": [ { "name": "userspace-rcu-debugsource", "epoch": null, "version": "0.15.5", "release": "1.fc44", "arch": "x86_64" }, { "name": "userspace-rcu", "epoch": null, "version": "0.15.5", "release": "1.fc44", "arch": "x86_64" }, { "name": "userspace-rcu-debuginfo", "epoch": null, "version": "0.15.5", "release": "1.fc44", "arch": "x86_64" }, { "name": "userspace-rcu", "epoch": null, "version": "0.15.5", "release": "1.fc44", "arch": "src" }, { "name": "userspace-rcu-devel", "epoch": null, "version": "0.15.5", "release": "1.fc44", "arch": "x86_64" } ] }, "appstream": false, "allow_user_ssh": false, "ssh_public_keys": null, "storage": 0, "repos": [ { "baseurl": "https://download.copr.fedorainfracloud.org/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/", "id": "copr_base", "name": "Copr repository", "priority": null }, { "baseurl": "https://kojipkgs.fedoraproject.org/repos/f44-build-side-124978/latest/$basearch/", "id": "https_kojipkgs_fedoraproject_org_repos_f44_build_side_124978_latest_basearch", "name": "Additional repo https_kojipkgs_fedoraproject_org_repos_f44_build_side_124978_latest_basearch" } ], "background": true, "fedora_review": false, "isolation": "default", "repo_priority": null, "tags": [ "arch_x86_64" ], "with_opts": [], "without_opts": [], "destdir": "/var/lib/copr/public_html/results/siddhesh/mbp-gcc-16", "results_repo_url": "https://download.copr.fedorainfracloud.org/results/siddhesh/mbp-gcc-16", "result_dir": "09964420-userspace-rcu", "built_packages": "userspace-rcu-debugsource 0.15.5\nuserspace-rcu 0.15.5\nuserspace-rcu-debuginfo 0.15.5\nuserspace-rcu-devel 0.15.5", "id": 9964420, "mockchain_macros": { "copr_username": "siddhesh", "copr_projectname": "mbp-gcc-16", "vendor": "Fedora Project COPR (siddhesh/mbp-gcc-16)" } } ] } [2026-01-01 15:14:31,574][ INFO][PID:4009955] Sending fedora-messaging bus message in build.end [2026-01-01 15:14:31,606][ INFO][PID:4009955] Compressing /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu/builder-live.log by gzip [2026-01-01 15:14:31,607][ INFO][PID:4009955] Running command 'gzip /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu/builder-live.log' as PID 4055615 [2026-01-01 15:14:31,659][ INFO][PID:4009955] Finished after 0 seconds with exit code 0 (gzip /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu/builder-live.log) [2026-01-01 15:14:31,660][ INFO][PID:4009955] Compressing /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu/backend.log by gzip [2026-01-01 15:14:31,661][ INFO][PID:4009955] Running command 'gzip /var/lib/copr/public_html/results/siddhesh/mbp-gcc-16/fedora-rawhide-x86_64/09964420-userspace-rcu/backend.log' as PID 4055621