96         PLOG(ERROR) << "Failed to find cgroup for tid " << tid;  in CgroupGetAttributePathForTask()
170                     PLOG(WARNING) << "Failed to remove " << path;  in RemoveUidProcessGroups()
195             PLOG(ERROR) << "Failed to open " << cgroup_root_path;  in removeAllProcessGroups()
214                     PLOG(WARNING) << "Failed to remove " << path;  in removeAllProcessGroups()
238         PLOG(ERROR) << "opendir failed for " << path;  in MkdirAndChown()
251             PLOG(ERROR) << "lchown failed for " << file_path;  in MkdirAndChown()
256             PLOG(ERROR) << "fchmodat failed for " << file_path;  in MkdirAndChown()
281         PLOG(WARNING) << "Failed to open process cgroup uid " << uid << " pid " << initialPid;  in DoKillProcessGroupOnce()
302         if (pgid == -1) PLOG(ERROR) << "getpgid(" << pid << ") failed";  in DoKillProcessGroupOnce()
326             PLOG(WARNING) << "kill(" << -pgid << ", " << signal << ") failed";  in DoKillProcessGroupOnce()
336             PLOG(WARNING) << "kill(" << pid << ", " << signal << ") failed";  in DoKillProcessGroupOnce()
371         PLOG(ERROR) << "Error encountered killing process cgroup uid " << uid << " pid "  in KillProcessGroup()
428         PLOG(ERROR) << "Failed to get stats for " << cgroup;  in createProcessGroupInternal()
436         PLOG(ERROR) << "Failed to make and chown " << uid_path;  in createProcessGroupInternal()
443         PLOG(ERROR) << "Failed to make and chown " << uid_pid_path;  in createProcessGroupInternal()
452         PLOG(ERROR) << "Failed to write '" << initialPid << "' to " << uid_pid_procs_file;  in createProcessGroupInternal()
462         PLOG(ERROR) << "service memory controls are used without per-process memory cgroup support";  in createProcessGroup()
481         PLOG(ERROR) << "Memcg is not mounted.";  in SetProcessGroupValue()
487         PLOG(ERROR) << "Failed to find attribute '" << attr_name << "'";  in SetProcessGroupValue()
492         PLOG(ERROR) << "Failed to write '" << value << "' to " << path;  in SetProcessGroupValue()