Postgres v15 windows bincheck regression test failures

Hi All:

I upgraded to postgres v15, and I am getting intermittent failures for
some of the bin regression tests when building on Windows 10. Example:

perl vcregress.pl bincheck

Installation complete.
t/001_initdb.pl .. ok
All tests successful.
Files=1, Tests=25, 12 wallclock secs ( 0.03 usr + 0.01 sys = 0.05 CPU)
Result: PASS
t/001_basic.pl ........... ok
t/002_nonesuch.pl ........ 1/?
# Failed test 'checking a non-existent database stderr /(?^:FATAL:
database "qqq" does not exist)/'
# at t/002_nonesuch.pl line 25.
# 'pg_amcheck: error: connection to server at
"127.0.0.1", port 49393 failed: server closed the connection
unexpectedly
# This probably means the server terminated abnormally
# before or while processing the request.
# '
# doesn't match '(?^:FATAL: database "qqq" does not exist)'
t/002_nonesuch.pl ........ 97/? # Looks like you failed 1 test of 100.
t/002_nonesuch.pl ........ Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/100 subtests
t/003_check.pl ........... ok
t/004_verify_heapam.pl ... ok
t/005_opclass_damage.pl .. ok

Test Summary Report
-------------------
t/002_nonesuch.pl (Wstat: 256 Tests: 100 Failed: 1)
Failed test: 3
Non-zero exit status: 1
Files=5, Tests=196, 86 wallclock secs ( 0.11 usr + 0.08 sys = 0.19 CPU)
Result: FAIL
...

I see a similar failure on the build farm at:

https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=fairywren&dt=2023-06-03%2020%3A03%3A07

I have also received the same error in the pg_dump test as the build
server above. Are these errors expected? Are they due to the fact that
windows tests use SSPI? It seems to work correctly if I recreate all
of the steps with an HBA that does not use SSPI.

thanks,
Russell