ruby-trunk on cygwin (win7,64bit) でテストが通らない件

$ uname -a
CYGWIN_NT-6.1-WOW64 xxx 1.7.9(0.237/5/3) 2011-03-29 10:10 i686 Cygwin
$ make test

test_attr.rb 31 [main] ruby 1500 D:\cygwin\home\user\work\ruby\ruby.exe: *** fatal error - unable to remap \\?\D:\cygwin\home\user\
work\ruby\.ext\i386-cygwin\etc.so to same address as parent: 0x410000 != 0x8B0000
Stack trace:
Frame Function Args
002895C8 6102796B (002895C8, 00000000, 00000000, 00000000)
002898B8 6102796B (6117EC60, 00008000, 00000000, 61180977)
0028A8E8 61004F1B (611A7FAC, 612470FC, 00410000, 008B0000)
End of stack trace
      1 [main] ruby 5436 fork: child 1500 - died waiting for dll loading, errno 11

so の読み込みでこけるとか不思議すぎるんですが、テストだけなんかなぁ。

1.9.2-p0 のビルドしたやつは普通に使えてたんですけど。