On September 10 the test-build-vcpkg-win nightly Crossbow job began to fail.
This job uses the current windows-2019 GHA runner image, so it often catches build errors associated with Visual Studio/MSVC updates.
The logs show these error messages (simplified for readability):
Here is a link to the logs when they first began to fail on September 10: https://github.com/ursacomputing/crossbow/runs/3564248552#step:4:2985
The error messages have remained the same since then.
Here is a link to the logs from the previous day (September 9) before they began to fail:
Possible causes include:
Updates to MSVC that were applied to the windows-2019 GHA runner image on September 9:
One of these commits on September 9:
Changes to one of the vcpkg-installed Arrow dependencies on September 9 (but I don't see any such changes in the microsoft/vcpkg repo commit history).