Panic from Rust is not caught properly when trying to reset with an invalid pci id

[nhuang-tt]

tt-smi -r 3, 3 is invalid. Using an invalid PCI index is not handled properly by tt-smi. I can see tt_smi/tt_smi_backend.py:590 has code to catch Python Exceptions but the real error is a panic coming from a Rust library.

The system is a Wormhole B0, tt-smi v 3.0.2.

thread '<unnamed>' panicked at crates/pyluwen/src/lib.rs:557:70:
called `Result::unwrap()` on an `Err` value: DeviceOpenFailed { id: 3, source: Os { code: 2, kind: NotFound, message: "No such file or directory" } }
stack backtrace:
   0:     0x7610996fa85b - std::backtrace_rs::backtrace::libunwind::trace::h3926e05c1d1f3b6d
                               at /build/rustc-60UC9b/rustc-1.75.0+dfsg0ubuntu1~bpo0/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
   1:     0x7610996fa85b - std::backtrace_rs::backtrace::trace_unsynchronized::h9f5691494ac25ae6
                               at /build/rustc-60UC9b/rustc-1.75.0+dfsg0ubuntu1~bpo0/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7610996fa85b - std::sys_common::backtrace::_print_fmt::h7e6bb7b81bf214f4
                               at /build/rustc-60UC9b/rustc-1.75.0+dfsg0ubuntu1~bpo0/library/std/src/sys_common/backtrace.rs:67:5
   3:     0x7610996fa85b - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hcf688c88e28c91b4
                               at /build/rustc-60UC9b/rustc-1.75.0+dfsg0ubuntu1~bpo0/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x76109972e490 - core::fmt::rt::Argument::fmt::h59a542682908b618
                               at /build/rustc-60UC9b/rustc-1.75.0+dfsg0ubuntu1~bpo0/library/core/src/fmt/rt.rs:142:9
   5:     0x76109972e490 - core::fmt::write::hce91e70849a27dee
                               at /build/rustc-60UC9b/rustc-1.75.0+dfsg0ubuntu1~bpo0/library/core/src/fmt/mod.rs:1120:17
   6:     0x7610996f0bbd - std::io::Write::write_fmt::h0bba58d3b1b495e9
                               at /build/rustc-60UC9b/rustc-1.75.0+dfsg0ubuntu1~bpo0/library/std/src/io/mod.rs:1762:15
   7:     0x7610996fa644 - std::sys_common::backtrace::_print::hf3a4f110a22f16df
                               at /build/rustc-60UC9b/rustc-1.75.0+dfsg0ubuntu1~bpo0/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7610996fa644 - std::sys_common::backtrace::print::h0450d1fd5fc83f73
                               at /build/rustc-60UC9b/rustc-1.75.0+dfsg0ubuntu1~bpo0/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x76109971736a - std::panicking::default_hook::{{closure}}::hee7ec73fab21a529
  10:     0x76109971700d - std::panicking::default_hook::he65be6b11b67d1e4
                               at /build/rustc-60UC9b/rustc-1.75.0+dfsg0ubuntu1~bpo0/library/std/src/panicking.rs:292:9
  11:     0x7610997176a8 - std::panicking::rust_panic_with_hook::h9e4f07a5a69c9caf
                               at /build/rustc-60UC9b/rustc-1.75.0+dfsg0ubuntu1~bpo0/library/std/src/panicking.rs:779:13
  12:     0x7610996fac3e - std::panicking::begin_panic_handler::{{closure}}::h69a9732dd2e7007d
                               at /build/rustc-60UC9b/rustc-1.75.0+dfsg0ubuntu1~bpo0/library/std/src/panicking.rs:657:13
  13:     0x7610996faa76 - std::sys_common::backtrace::__rust_end_short_backtrace::hf159dc40d4738bc4
                               at /build/rustc-60UC9b/rustc-1.75.0+dfsg0ubuntu1~bpo0/library/std/src/sys_common/backtrace.rs:170:18
  14:     0x7610997173d2 - rust_begin_unwind
                               at /build/rustc-60UC9b/rustc-1.75.0+dfsg0ubuntu1~bpo0/library/std/src/panicking.rs:645:5
  15:     0x761099658ac5 - core::panicking::panic_fmt::hf38ef33e65607e17
                               at /build/rustc-60UC9b/rustc-1.75.0+dfsg0ubuntu1~bpo0/library/core/src/panicking.rs:72:14
  16:     0x7610996591d3 - core::result::unwrap_failed::h93afb55b612add5a
                               at /build/rustc-60UC9b/rustc-1.75.0+dfsg0ubuntu1~bpo0/library/core/src/result.rs:1653:5
  17:     0x76109966107f - pyluwen::PciChip::new::h18a5d5b21bdf257b
  18:     0x761099687e8f - pyluwen::_::_::__INVENTORY::trampoline::h7d04eee8a05a4bd1
  19:           0x5e7173 - _PyObject_MakeTpCall
  20:           0x56247d - _PyEval_EvalFrameDefault
  21:           0x55abda - _PyEval_EvalCodeWithName
  22:           0x5e6c43 - _PyFunction_Vectorcall
  23:           0x55dafb - _PyEval_EvalFrameDefault
  24:           0x5e6a66 - _PyFunction_Vectorcall
  25:           0x55c91d - _PyEval_EvalFrameDefault
  26:           0x55abda - _PyEval_EvalCodeWithName
  27:           0x68bfe7 - PyEval_EvalCode
  28:           0x67d831 - <unknown>
  29:           0x67d8af - <unknown>
  30:           0x67d951 - <unknown>
  31:           0x67e5e7 - PyRun_SimpleFileExFlags
  32:           0x6b5732 - Py_RunMain
  33:           0x6b5abd - Py_BytesMain
  34:     0x76109b7a3083 - __libc_start_main
  35:           0x5eb5ee - _start
  36:                0x0 - <unknown>
Traceback (most recent call last):
  File "/home/nhuang/.local/bin/tt-smi", line 8, in <module>
    sys.exit(main())
  File "/home/nhuang/.local/lib/python3.8/site-packages/tt_smi/tt_smi.py", line 779, in main
    pci_board_reset(args.reset, reinit=True)
  File "/home/nhuang/.local/lib/python3.8/site-packages/tt_smi/tt_smi_backend.py", line 590, in pci_board_reset
    chip = PciChip(pci_interface=pci_idx)
pyo3_runtime.PanicException: called `Result::unwrap()` on an `Err` value: DeviceOpenFailed { id: 3, source: Os { code: 2, kind: NotFound, message: "No such file or directory" } }