golint check only works on Go 1.5

.travis.yml

@@ -19,6 +19,7 @@ before_install:
  - cd ssdb
  - make
  - cd ..
+ - '[[ $(go version) == *1.[5-9]* ]] && go get github.com/golang/lint/golint'
 install:
   - go get github.com/lib/pq
   - go get github.com/go-sql-driver/mysql
@@ -32,7 +33,6 @@ install:
   - go get github.com/siddontang/ledisdb/config
   - go get github.com/siddontang/ledisdb/ledis
   - go get golang.org/x/tools/cmd/vet
-  - go get github.com/golang/lint/golint
   - go get github.com/ssdb/gossdb/ssdb
 before_script:
   - sh -c "if [ '$ORM_DRIVER' = 'postgres' ]; then psql -c 'create database orm_test;' -U postgres; fi"
@@ -45,7 +45,7 @@ after_script:
   - rm -rf ./res/var/*
 script:
   - go vet -x ./...
-  - $HOME/gopath/bin/golint ./...
+  - '[[ $(go version) == *1.[5-9]* ]] && $HOME/gopath/bin/golint ./...'
   - go test -v ./...
 notifications:
   webhooks: https://hooks.pubu.im/services/z7m9bvybl3rgtg9