We are seeing telemetry that indicates that enabling Mach bootstrap is failing in some cases. Add logging to help diagnose this.
Pull request: https://github.com/WebKit/WebKit/pull/1011
Committed r294809 (250963@main): <https://commits.webkit.org/250963@main> Reviewed commits have been landed. Closing PR #1011 and removing active labels.
<rdar://problem/93914605>