conditional rust setup in travis.yml
conditional rust setup in travis.yml

snowballstem/snowball,JDemler/snowball,snowballstem/snowball,snowballstem/snowball,JDemler/snowball,JDemler/snowball,JDemler/snowball,snowballstem/snowball,snowballstem/snowball,snowballstem/snowball,snowballstem/snowball,snowballstem/snowball,JDemler/snowball,JDemler/snowball