Version-Release number of selected component:
mock-3.5-2.fc38

Additional info:
reporter:       libreport-2.17.10
kernel:         6.2.14-300.fc38.x86_64
cmdline:        /usr/bin/python3 -tt /usr/libexec/mock/mock --configdir /tmp/rhel-9.2.0-candidate-x86_64.133a07prmockconfig -r rhel-9.2.0-candidate-x86_64 --resultdir /home/pemensik/rhel/dnsmasq/results_dnsmasq/2.85/6.el9_2.2 --rebuild /home/pemensik/rhel/dnsmasq/dnsmasq-2.85-6.el9_2.2.src.rpm
cgroup:         0::/user.slice/user-100616.slice/user/app.slice/app-org.gnome.Terminal.slice/vte-spawn-5a907f66-d9f7-4fb3-b9ce-d3330130dbd7.scope
uid:            0
reason:         file_util.py:67:rmtree:OSError: [Errno 16] Device or resource busy: '/var/lib/mock/rhel-9.2.0-candidate-x86_64/root/proc/filesystems'
executable:     /usr/libexec/mock/mock
type:           Python3
package:        mock-3.5-2.fc38
runlevel:       N 5
exception_type: KeyboardInterrupt
crash_function: logOutput
interpreter:    python3-3.11.3-1.fc38.x86_64

Truncated backtrace:
#1 [/usr/lib/python3.11/site-packages/mockbuild/util.py:394] logOutput
#2 [/usr/lib/python3.11/site-packages/mockbuild/util.py:556] do_with_status
#3 [/usr/lib/python3.11/site-packages/mockbuild/trace_decorator.py:93] trace
#4 [/usr/lib/python3.11/site-packages/mockbuild/util.py:499] do
#5 [/usr/lib/python3.11/site-packages/mockbuild/plugins/selinux.py:106] _selinuxDoYum
#6 [/usr/lib/python3.11/site-packages/mockbuild/package_manager.py:226] execute
#7 [/usr/lib/python3.11/site-packages/mockbuild/trace_decorator.py:93] trace
#8 [/usr/lib/python3.11/site-packages/mockbuild/buildroot.py:388] _init_pkg_management
#9 [/usr/lib/python3.11/site-packages/mockbuild/trace_decorator.py:93] trace
#10 [/usr/lib/python3.11/site-packages/mockbuild/buildroot.py:209] _init
#11 [/usr/lib/python3.11/site-packages/mockbuild/trace_decorator.py:93] trace
#12 [/usr/lib/python3.11/site-packages/mockbuild/buildroot.py:141] initialize
#13 [/usr/lib/python3.11/site-packages/mockbuild/trace_decorator.py:93] trace
#14 [/usr/lib/python3.11/site-packages/mockbuild/backend.py:168] init
#15 [/usr/lib/python3.11/site-packages/mockbuild/trace_decorator.py:93] trace
#16 [/usr/lib/python3.11/site-packages/mockbuild/rebuild.py:24] rebuild_generic