tree ace78d88da4b9f6368384515bf342d68027f56c7
parent a514908c7fd29e668dd775d7a32c949dbc8fe7d7
author Mikhail Pukhlikov <cynede@gentoo.org> 1474016393 +0400
committer Zac Medico <zmedico@gentoo.org> 1474236784 -0700
gpgsig -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iEYEABECAAYFAlffEXYACgkQ/ejvha5XGaMJIwCeMFwilVfr7payE6BcAG9o56zW
 P8IAoI9ImBBQSe+uhZt8eT9ahLBwFJ4M
 =o5oU
 -----END PGP SIGNATURE-----

writeable_check: handle invalid entries in /proc/self/mountinfo

That fixes Gentoo installation won WLS
Source: https://github.com/Microsoft/BashOnWindows/issues/992#issuecomment-244460439
Can reproduce on two machines