LogWriter inspected each pipe chunk on its own. The Go runtime writes
"panic: " with a separate write before the message and traceback, so the
crash report was written from that first chunk alone and the panel left
7-byte core_crash_*.log files holding only "panic: ". Any ordinary log
line mentioning panic/exception/stack trace was also treated as a crash
and dropped from the panel log.
The writer now splits output into lines, starts a crash only on a line
beginning with the Go runtime's "panic: " / "fatal error: " header, keeps
everything after it, and writes one report from Flush, which
waitForCommand calls after cmd.Wait has delivered all output. The header
line becomes LastLine so GetResult shows the cause.
The report filename format "_000000000" is not a Go fractional-seconds
layout and always produced literal zeros, so reports from the same second
overwrote each other; os.CreateTemp now gives every report a unique name.
MHSanaei