==4==WARNING: reading executable name failed with errno 2, some stack frames may not be symbolized
==4==WARNING: reading executable name failed with errno 2, some stack frames may not be symbolized
PASS 9989 initialized values/square pairs; board=4748 bytes, history=256 entries
==5==Can't open /proc/4/task for reading.
==4==LeakSanitizer has encountered a fatal error.
==4==HINT: For debugging, try setting environment variable LSAN_OPTIONS=verbosity=1:log_threads=1
==4==HINT: LeakSanitizer does not work under ptrace (strace, gdb, etc)
