~250 crashes for the Firefox v106 release cycle, 6 for v105, 55 for v107 so far. >90% on Linux, others on macOS.

For Firefox 107.0, 31 crashes are from our official builds and 24 from other builds (could be from distros).

Crash report: https://crash-stats.mozilla.org/report/index/7ac88176-b79f-4549-9618-d1dde0221130

MOZ_CRASH Reason: Index out-of-range

Top 10 frames of crashing thread:

0  libxul.so  MOZ_Crash  mfbt/Assertions.h:261
0  libxul.so  RustMozCrash  mozglue/static/rust/wrappers.cpp:18
1  libxul.so  mozglue_static::panic_hook  mozglue/static/rust/lib.rs:91
2  libxul.so  core::ops::function::Fn::call  library/core/src/ops/function.rs:77
3  libxul.so  std::panicking::rust_panic_with_hook  library/std/src/panicking.rs:702
4  libxul.so  std::panicking::begin_panic_handler::{{closure}}  library/std/src/panicking.rs:588
5  libxul.so  std::sys_common::backtrace::__rust_end_short_backtrace  library/std/src/sys_common/backtrace.rs:138
6  libxul.so  rust_begin_unwind  library/std/src/panicking.rs:584
7  libxul.so  core::panicking::panic_fmt  library/core/src/panicking.rs:142
8  libxul.so  core::panicking::panic_display  library/core/src/panicking.rs:72

This was fixed by Bug 1773733