rr crash: "This shouldn't happen"

Is it helpful to report these, "This shouldn't happen" rr crashes?

rr: Saving execution to trace directory `/mnt/oldrog/home/jaten/go/src/github.com/glycerine/rr_binary_for_issue74019/rr/rpc.test-139'.
faketime = false
=== RUN   Test040_remote_cancel_by_context

cli_test.go:948 [goID 20] 2025-06-07 22:42:14.694722815 +0000 UTC server Start() returned serverAddr = '127.0.0.1:35777'

cli.go:211 [goID 8] 2025-06-07 22:42:14.715436626 +0000 UTC connected to server 127.0.0.1:35777

cli_test.go:982 [goID 20] 2025-06-07 22:42:14.715703413 +0000 UTC cli_test 040: about to block on test040callStarted

cli_test.go:974 [goID 13] 2025-06-07 22:42:14.715895307 +0000 UTC client.Call() goro top about to call over net/rpc: MustBeCancelled.WillHangUntilCancel()
[FATAL src/RecordCommand.cc:575:handle_SIGSEGV()] rr itself crashed (SIGSEGV). This shouldn't happen!
=== Start rr backtrace:
rr(+0xba678)[0x6027d8945678]
rr(_ZN2rr12FatalOstreamD1Ev+0x6a)[0x6027d894801a]
rr(+0xefe5a)[0x6027d897ae5a]
/lib/x86_64-linux-gnu/libc.so.6(+0x45330)[0x7df51ae45330]
/lib/x86_64-linux-gnu/libc.so.6(+0x1893b4)[0x7df51af893b4]
rr(_ZN2rr4Task16reset_syscallbufEv+0xd6)[0x6027d8a6cdc6]
rr(_ZN2rr10RecordTask22maybe_reset_syscallbufEv+0x92)[0x6027d89d8da2]
rr(_ZN2rr10RecordTask12record_eventENS_5EventENS0_15FlushSyscallbufENS0_20AllowSyscallbufResetEPKNS_9RegistersE+0x83a)[0x6027d89d833a]
rr(_ZN2rr13RecordSession21syscall_state_changedEPNS_10RecordTaskEPNS0_9StepStateE+0x3a7)[0x6027d8981527]
rr(_ZN2rr13RecordSession11record_stepEv+0x4c3)[0x6027d898ab93]
rr(_ZN2rr13RecordCommand3runERSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS7_EE+0x1d2e)[0x6027d8979b9e]
rr(main+0x35e)[0x6027d895038e]
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca)[0x7df51ae2a1ca]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b)[0x7df51ae2a28b]
rr(_start+0x25)[0x6027d88c1685]
=== End rr backtrace
Aborted (core dumped)

rr: Trace file `/mnt/oldrog/home/jaten/go/src/github.com/glycerine/rr_binary_for_issue74019/rr/rpc.test-139/incomplete' found.
rr recording terminated abnormally and the trace is incomplete.

Start by reproducing Test040_remote_cancel_by_context from cli_test.go, using the rr trace details in the report. Then inspect src/RecordCommand.cc:575 and the cited Task::reset_syscallbuf and RecordTask call paths. Done means the reported rr SIGSEGV is understood and no longer causes an incomplete recording for this case.