Thread 2 killed on uncaught exception Failure("0") Raised at Stdlib.failwith in file "stdlib.ml", line 29, characters 17-33 Called from Backtrace_systhreads.thread_func in file "backtrace_systhreads.ml", line 14, characters 6-37 Re-raised at Backtrace_systhreads.thread_func in file "backtrace_systhreads.ml", line 18, characters 5-14 Called from Thread.create.(fun) in file "thread.ml", line 48, characters 8-14 Thread 3 killed on uncaught exception Failure("1") Raised at Stdlib.failwith in file "stdlib.ml", line 29, characters 17-33 Called from Backtrace_systhreads.thread_func in file "backtrace_systhreads.ml", line 14, characters 6-37 Re-raised at Backtrace_systhreads.thread_func in file "backtrace_systhreads.ml", line 18, characters 5-14 Called from Thread.create.(fun) in file "thread.ml", line 48, characters 8-14 Thread 4 killed on uncaught exception Failure("2") Raised at Stdlib.failwith in file "stdlib.ml", line 29, characters 17-33 Called from Backtrace_systhreads.thread_func in file "backtrace_systhreads.ml", line 14, characters 6-37 Re-raised at Backtrace_systhreads.thread_func in file "backtrace_systhreads.ml", line 18, characters 5-14 Called from Thread.create.(fun) in file "thread.ml", line 48, characters 8-14 Thread 5 killed on uncaught exception Failure("3") Raised at Stdlib.failwith in file "stdlib.ml", line 29, characters 17-33 Called from Backtrace_systhreads.thread_func in file "backtrace_systhreads.ml", line 14, characters 6-37 Re-raised at Backtrace_systhreads.thread_func in file "backtrace_systhreads.ml", line 18, characters 5-14 Called from Thread.create.(fun) in file "thread.ml", line 48, characters 8-14 Thread 1 killed on uncaught exception Failure("backtrace") Raised at Stdlib.failwith in file "stdlib.ml", line 29, characters 17-33 Called from Backtrace_systhreads.thread_backtrace in file "backtrace_systhreads.ml", line 22, characters 6-27 Re-raised at Backtrace_systhreads.thread_backtrace in file "backtrace_systhreads.ml", line 26, characters 5-14 Called from Thread.create.(fun) in file "thread.ml", line 48, characters 8-14