/proc/4/task/5/root/proc
This explorer reads the filesystem of the server it runs on, so /workspace/user isn't present here. Browsing and the terminal still work against this server's own disk from /.
#subsys_name hierarchy num_cgroups enabledcpuset 6 1 1cpu 4 38 1cpuacct 4 38 1blkio 5 35 1memory 8 51 1devices 3 35 1freezer 9 4 1net_cls 7 1 1perf_event 2 1 1net_prio 7 1 1hugetlb 11 1 1pids 10 35 1