K 10
svn:author
V 7
asomers
K 8
svn:date
V 27
2017-03-01T23:35:05.055505Z
K 7
svn:log
V 275
lang/rust*: Advise users to mount procfs

Add a pkg-message to these ports advising users to mount procfs to see
backtraces.

Reviewed by:	dumbbell, riggs
Approved by:	dumbbell (ports)
Sponsored by:	Spectra Logic Corp
Differential Revision:	https://reviews.freebsd.org/D9838

END