339     PLOG(ERROR) << "Failed to scan task folder";  in PtraceSiblings()
361       PLOG(ERROR) << "Failed to attach to tid " << tid;  in PtraceSiblings()
390     LOG(ERROR) << "Could not get registers to determine abi.";  in DumpABI()
434   LOG(ERROR) << "ABI: '" << abi_str << "'" << std::endl;  in DumpABI()
471       PLOG(ERROR) << "Failed to waitpid for " << pid;  in WaitForSigStopped()
477         LOG(ERROR) << "Did not get expected stopped signal for " << pid;  in WaitForSigStopped()
500   LOG(ERROR) << std::endl << "=== pid: " << pid << " tid: " << tid << " ===" << std::endl;  in DumpThread()
504     LOG(ERROR) << "Failed to wait for sigstop on " << tid;  in DumpThread()
509     LOG(ERROR) << prefix << "(failed to create Backtrace for thread " << tid << ")";  in DumpThread()
514     LOG(ERROR) << prefix << "(backtrace::Unwind failed for thread " << tid  in DumpThread()
519     LOG(ERROR) << prefix << "(no native stack frames for thread " << tid << ")";  in DumpThread()
558     LOG(ERROR) << oss.str() << std::endl;  in DumpThread()
563                            LOG_STREAM(ERROR),  in DumpThread()
570     addr2line::Drain(0, prefix, &addr2line_state, LOG_STREAM(ERROR));  in DumpThread()
575   LOG(ERROR) << "Timeout for process " << forked_pid;  in DumpProcess()
588       LOG(ERROR) << "Did not find usable addr2line";  in DumpProcess()
593     LOG(ERROR) << "Did not receive SIGSTOP for pid " << forked_pid;  in DumpProcess()
598     LOG(ERROR) << "Could not create BacktraceMap";  in DumpProcess()