Add ignore and no_run to get cargo test to pass.

[LegNeato]

Without these running cargo test on a clean checkout fails.

[eddyb]

Thanks, can you add a CHANGELOG entry, and also make sure we run all the tests on CI, so this gets hit?

Ideally you could do it in a commit before the fixes, and push that commit first, such that we can see CI fail before the fix (so we know the CI changes can reproduce).

[LegNeato]

@eddyb done. I debated using --doc and/or using -p on each of the crates instead of doing the entire cargo test, but this was the "safest" as it would catch any issues.

[fornwall]

Thanks!