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) = ? ERESTARTNOHAND (To be restarted)
742   --- SIGCHLD (Child exited) @ 0 (0) ---
742   _newselect(6, [3 4 5], [], NULL, NULL <unfinished ...>