Issue #7284 has been reported by usa (Usaku NAKAMURA).
Backport #7284: some failures on RubyInstaller CI
Author: usa (Usaku NAKAMURA)
Assignee: luislavena (Luis L.)
I know there are some failures on RubyInstall CI of 1.9.3.
I guess these failures are related to system code page,
because on my PC there is no failure.
And, there is no failure on RubyInstall CI of trunk, so
some backports may be needed.
Luis, can you recall what changes on trunk fixed them?