macOS builds appear broken

[bnaecker]

Some of the recent bot PRs for updating dependencies have failed on macOS. Here is a link to the error I see for all of them. That points to the file /usr/lib/dtrace/tcp.d, which is a system-provided D file with what looks like definitions of a bunch of TCP-related types, presumably to support tracing TCP connections and traffic. The error is complaining about an "invalid type identifier" for a struct tcpcb*. That type is defined just below the line where the failure appears, so I'm not sure what the issue is.

I should also note that this is failing on macOS 14.7.1. I am running 14.6.1 locally, and I see no such failure.

[bnaecker]

I pushed a test commit in #332, which just prints the contents of the offending D file to compare. Of course, that did not fail, and also the setup CI job claims it's running on macOS 14.7, which is different than the failed runs.

[bnaecker]

Ok, it appears that (1) the issue occurs only with macos 14.7.1, and not 14.7, and (2) it is entirely unpredictable which runner we get for any particular CI job.