742   _newselect(6, [3 4 5], [], NULL, NULL) = 1 (in [4])
742   read(4, "e", 2022)                = 1
742   _newselect(6, [3 4 5], [5], NULL, NULL) = 1 (out [5])
742   write(5, "e", 1) = 1
742   _newselect(6, [3 4 5], [], NULL, NULL) = 1 (in [5])
742   read(5, "e", 2022)                = 1
742   _newselect(6, [3 4 5], [4], NULL, NULL) = 1 (out [4])
742   write(4, "e", 1)                  = 1
742   _newselect(6, [3 4 5], [], NULL, NULL) = 1 (in [4])
742   read(4, "x", 2022)                = 1
742   _newselect(6, [3 4 5], [5], NULL, NULL) = 1 (out [5])
742   write(5, "x", 1) = 1
742   _newselect(6, [3 4 5], [], NULL, NULL) = 1 (in [5])
742   read(5, "x", 2022)                = 1
742   _newselect(6, [3 4 5], [4], NULL, NULL) = 1 (out [4])
742   write(4, "x", 1)                  = 1
742   _newselect(6, [3 4 5], [], NULL, NULL) = 1 (in [4])
742   read(4, "i", 2022)                = 1
742   _newselect(6, [3 4 5], [5], NULL, NULL) = 1 (out [5])
742   write(5, "i", 1) = 1
742   _newselect(6, [3 4 5], [], NULL, NULL) = 1 (in [5])
742   read(5, "i", 2022)                = 1
742   _newselect(6, [3 4 5], [4], NULL, NULL) = 1 (out [4])
742   write(4, "i", 1)                  = 1
742   _newselect(6, [3 4 5], [], NULL, NULL) = 1 (in [4])
742   read(4, "t", 2022)                = 1
742   _newselect(6, [3 4 5], [5], NULL, NULL) = 1 (out [5])
742   write(5, "t", 1) = 1
742   _newselect(6, [3 4 5], [], NULL, NULL) = 1 (in [5])
742   read(5, "t", 2022)                = 1
742   _newselect(6, [3 4 5], [4], NULL, NULL) = 1 (out [4])
742   write(4, "t", 1)                  = 1
742   _newselect(6, [3 4 5], [], NULL, NULL) = 1 (in [4])
742   read(4, "\r\n", 2022)             = 2
742   _newselect(6, [3 4 5], [5], NULL, NULL) = 1 (out [5])
742   write(5, "\r", 1) = 1
742   _newselect(6, [3 4 5], [], NULL, NULL) = 1 (in [5])
742   read(5, "\r\n", 2022) = 2
742   _newselect(6, [3 4 5], [4], NULL, NULL) = 1 (out [4])
742   write(4, "\r\n", 2) = 2
742   _newselect(6, [3 4 5], [], NULL, NULL) = 1 (in [5])
742   --- SIGCHLD (Child exited) @ 0 (0) ---
742   read(5, 0x4a7822, 2022)           = -1 EIO (Input/output error)
742   kill(1186, SIGKILL)               = 0
742   wait4(1186, NULL, 0, NULL)        = 1186
742   close(5)                          = 0
742   close(4)                          = 0
742   close(4)                          = -1 EBADF (Bad file descriptor)
742   _newselect(4, [3], [], NULL, NULL <unfinished ...>