SwiftPM Pull Request Toolchain Windows timeouts

It appears pretty much all builds in the SwiftPM Pull Request Toolchain Windows fail with a timeout. In the logs, I see they're getting stuck at:

[996/997] Linking SwiftPMPackageTests.xctest
Build complete! (1132.22s)

And then after some time:

Build timed out (after 60 minutes). Marking the build as aborted.
Build was aborted
Adding one-line test results to commit status...
Setting status of b05555df23372d7280a36884b2389c50e4bc930f to FAILURE with url https://ci-external.swift.org/job/swiftpm-PR-windows/12480/ and message: 'Build finished. No test results found.'
Using context: Swift Test Windows Platform
Finished: ABORTED

Can someone look into this, please?

A change was recently submitted to the Windows Platform Testing (smoke test), ie: build.ps1, that would execute the SwiftPM automated tests.

This Platform build passed the original PR testing, but I have since posted a revert to unblock development.

FYI/ @compnerd