Catch keyboard interrupt in rerun-sdk CLI and return exit codes

[MichaelGrupp]

Fixes two issues:

• Exit codes of the main() function weren't returned to the OS by the executable.
• uncaught KeyboardInterrupt
  • if you installed rerun-sdk and terminate rerun with ctrl+c, there was an ugly traceback
  • we can catch it and return 130, which is the standard POSIX code for SIGINT termination

[2026-01-16T16:11:55Z INFO  rerun::commands::entrypoint] Caught Ctrl-C, quitting Rerun Viewer…
[2026-01-16T16:11:55Z DEBUG eframe::native::epi_integration] Closing root viewport (ViewportCommand::CancelClose was not sent)
[2026-01-16T16:11:55Z DEBUG eframe::native::run] Asking to exit event loop…
[2026-01-16T16:11:55Z DEBUG eframe::native::run] Received Event::LoopExiting - saving app state…
[2026-01-16T16:11:55Z DEBUG eframe::native::run] eframe window closed
Traceback (most recent call last):
  File "/Users/michael/code/rerun/rerun_py/rerun_sdk/rerun/__main__.py", line 25, in <module>
    main()
  File "/Users/michael/code/rerun/rerun_py/rerun_sdk/rerun/__main__.py", line 21, in main
    return cli_main()
           ^^^^^^^^^^
  File "/Users/michael/code/rerun/rerun_py/rerun_sdk/rerun_cli/__main__.py", line 35, in main
    return subprocess.call([target_path, *sys.argv[1:]])
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/michael/code/rerun/.pixi/envs/default/lib/python3.11/subprocess.py", line 391, in call
    return p.wait(timeout=timeout)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/michael/code/rerun/.pixi/envs/default/lib/python3.11/subprocess.py", line 1264, in wait
    return self._wait(timeout=timeout)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/michael/code/rerun/.pixi/envs/default/lib/python3.11/subprocess.py", line 2053, in _wait
    (pid, sts) = self._try_wait(0)
                 ^^^^^^^^^^^^^^^^^
  File "/Users/michael/code/rerun/.pixi/envs/default/lib/python3.11/subprocess.py", line 2011, in _try_wait
    (pid, sts) = os.waitpid(self.pid, wait_flags)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
KeyboardInterrupt

..now:

2026-01-16T16:22:03Z INFO  rerun::commands::entrypoint] Caught Ctrl-C, quitting Rerun Viewer…
[2026-01-16T16:22:03Z DEBUG eframe::native::epi_integration] Closing root viewport (ViewportCommand::CancelClose was not sent)
[2026-01-16T16:22:03Z DEBUG eframe::native::run] Asking to exit event loop…
[2026-01-16T16:22:03Z DEBUG eframe::native::run] Received Event::LoopExiting - saving app state…
[2026-01-16T16:22:03Z DEBUG eframe::native::run] eframe window closed

echo $?

130

[abey79]

nice

[MichaelGrupp]

e2e test fails, probably because exit codes are now not lost anymore...?

[grtlr]

What's the status of this PR?

[MichaelGrupp]

Blocked by a side-effect, discovering that e2e test is broken. See https://rerunio.slack.com/archives/C045J1Z7DU7/p1768582805102949?thread_ts=1768581103.390639&cid=C045J1Z7DU7

[github-actions]

Web viewer built successfully.

Result	Commit	Link	Manifest
✅	9d7d9e1	https://rerun.io/viewer/pr/12496	+nightly +main

View image diff on kitdiff.

^{Note: This comment is updated whenever you push a commit.}

[MichaelGrupp]

This is the workaround for the test. The rest of the diff is due to a "unnecessary match statement" clippy lint.

[MichaelGrupp]

note: this function is only for the e2e test, see comment above

[MichaelGrupp]

@rerun-bot reality-sync

[rerun-sync]

Sync complete. Mirror PR in reality: https://github.com/rerun-io/reality/pull/209

Triggered by @MichaelGrupp

[emilk]

Nice one!