On the strace it didn't exit automatically (not sure if this is intended), i waited 5 minutes on the last line before canceling manually. cat /proc/cmdline quiet cat /proc/self/mountinfo 2655 2517 182:696641 / / rw,relatime shared:2202 - ext4 /dev/ploop43540p1 rw,stripe=4096,data=ordered,balloon_ino=12,jqfmt=vfsv1,usrjquota=aquota.user,grpjquota=aquota.group 2656 2655 0:381 / /sys rw,relatime shared:2203 - sysfs none rw 2657 2656 0:382 / /sys/fs/cgroup ro,nosuid,nodev,noexec shared:2204 - tmpfs none ro 2658 2657 0:28 / /sys/fs/cgroup/cpu,cpuacct rw,nosuid,nodev,noexec,relatime shared:2205 - cgroup cgroup rw,cpuacct,cpu 2659 2657 0:30 / /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime shared:2206 - cgroup cgroup rw,cpuset 2660 2657 0:31 / /sys/fs/cgroup/net_cls,net_prio rw,nosuid,nodev,noexec,relatime shared:2207 - cgroup cgroup rw,net_prio,net_cls 2661 2657 0:18 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime shared:2208 - cgroup cgroup rw,memory 2662 2657 0:32 / /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime shared:2209 - cgroup cgroup rw,devices 2663 2657 0:17 / /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime shared:2210 - cgroup cgroup rw,blkio 2664 2657 0:35 / /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime shared:2211 - cgroup cgroup rw,freezer 2665 2657 0:29 / /sys/fs/cgroup/perf_event rw,nosuid,nodev,noexec,relatime shared:2212 - cgroup cgroup rw,perf_event 2666 2657 0:33 / /sys/fs/cgroup/hugetlb rw,nosuid,nodev,noexec,relatime shared:2213 - cgroup cgroup rw,hugetlb 2667 2657 0:19 / /sys/fs/cgroup/pids rw,nosuid,nodev,noexec,relatime shared:2214 - cgroup cgroup rw,pids 2668 2657 0:26 / /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime shared:2215 - cgroup cgroup rw,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd 2642 2655 0:380 / /proc rw,relatime shared:2216 - proc proc rw 2643 2655 0:383 / /dev rw,nosuid shared:2217 - devtmpfs none rw,mode=755 2518 2643 0:384 / /dev/shm rw,nosuid,nodev shared:2218 - tmpfs tmpfs rw 2519 2643 0:385 / /dev/pts rw,nosuid,noexec,relatime shared:2219 - devpts devpts rw,gid=5,mode=620,ptmxmode=000 2520 2655 0:386 / /run rw,nosuid,nodev shared:2220 - tmpfs tmpfs rw,mode=755 2521 2520 0:387 / /run/lock rw,nosuid,nodev,noexec,relatime shared:2221 - tmpfs tmpfs rw,size=5120k 2522 2642 0:388 / /proc/sys/fs/binfmt_misc rw,relatime shared:2222 - autofs systemd-1 rw,fd=24,pipe_ino=25250595,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=25250595 2523 2643 0:379 / /dev/mqueue rw,relatime shared:2223 - mqueue mqueue rw 2524 2520 0:389 / /run/shm rw,relatime shared:2224 - tmpfs none rw 2870 2655 0:410 / /var/lib/docker/overlay2/01668781ea05a993a005080efbec5554b7d1156190fe800b5b0e71edb0a269a5/merged rw,relatime shared:2940 - overlay overlay rw,lowerdir=/var/lib/docker/overlay2/l/4QDYPQDEJ57YRMCEFLPXILMWH7:/var/lib/docker/overlay2/l/ZIQFQ2WVX2RB7I3DO5YBX2SFY2:/var/lib/docker/overlay2/l/WD3BJDHR2AGYDQ3EO43N27TBOE:/var/lib/docker/overlay2/l/3LV3YBWVBS7ITQ4GRXTRMNP2PP,upperdir=/var/lib/docker/overlay2/01668781ea05a993a005080efbec5554b7d1156190fe800b5b0e71edb0a269a5/diff,workdir=/var/lib/docker/overlay2/01668781ea05a993a005080efbec5554b7d1156190fe800b5b0e71edb0a269a5/work 3569 2520 0:380 net:[4026536532] /run/docker/netns/ef92ee21ca2f rw,relatime shared:2216 - proc proc rw 3211 2655 0:482 / /snap/core/9993 ro,nodev,relatime shared:2681 - fuse.snapfuse snapfuse ro,user_id=0,group_id=0,allow_other 3219 2520 0:386 /snapd/ns /run/snapd/ns rw,nosuid,nodev - tmpfs tmpfs rw,mode=755 2318 2655 0:377 / /snap/canonical-livepatch/95 ro,nodev,relatime shared:2301 - fuse.snapfuse snapfuse ro,user_id=0,group_id=0,allow_other 2672 3219 0:380 mnt:[4026534168] /run/snapd/ns/canonical-livepatch.mnt rw,relatime shared:2216 - proc proc rw 5346 2522 0:1218 / /proc/sys/fs/binfmt_misc rw,relatime shared:6357 - binfmt_misc binfmt_misc rw 9342 2655 0:1554 / /snap/core/10126 ro,nodev,relatime shared:8024 - fuse.snapfuse snapfuse ro,user_id=0,group_id=0,allow_other