/proc/4/task/4/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 2 1 1cpu 8 38 1cpuacct 8 38 1blkio 4 35 1memory 7 50 1devices 9 35 1freezer 11 4 1net_cls 10 1 1perf_event 6 1 1net_prio 10 1 1hugetlb 3 1 1pids 5 35 1