The buildfarm showed failure for Windows MSVC builds due to this omission. This might not be the only problem with the Makefile for this feature, but hopefully this will get it past the immediate problem.
Fix suggested by Tom Lane
279d86a Add snapshot_too_old to NSVC @contrib_excludes
src/tools/msvc/Mkvcbuild.pm | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
Upstream: git.postgresql.org