+ bundle="$(gem env gempath | cut -f1 -d:)/bin/bundle"
+ (
+ export HOME=$GEMHOME
+ bundlers="$(gem list --details bundler)"
+ versions=(1.11.0 1.17.3 2.0.2)
+ for v in ${versions[@]}; do
+ if ! echo "$bundlers" | fgrep -q "($v)"; then
+ gem install --user $(for v in ${versions[@]}; do echo bundler:${v}; done)
+ break
+ fi
+ done
+ "$bundle" version | tee /dev/stderr | grep -q 'version 2'
+ ) || fatal 'install bundler'