FreeBSD 13 CI seg faulted

[Thomasdezeeuw]

In #1931 the FreeBSD CI failed with the following:

rustup target add i686-unknown-freebsd
info: downloading component 'rust-std' for 'i686-unknown-freebsd'
info: installing component 'rust-std' for 'i686-unknown-freebsd'
cargo test --target i686-unknown-freebsd --all-features
Segmentation fault (core dumped)
Exit status: 139

Source: https://cirrus-ci.com/task/6640557205749760.

According to https://www.freebsd.org/security/#sup, the expected EOL for FreeBSD 13 is April 30, 2026. Is this worth investigating or should we remove 13 from the CI?

/cc @asomers

[Thomasdezeeuw]

I just got a successful run: https://cirrus-ci.com/task/5848834544238592. Maybe it was just a fluke?

In that case we can wait to the proper EOL for v13.