diff --git a/.circleci/config.yml b/.circleci/config.yml
index 77a27bdd06..b32db9b411 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -3,7 +3,7 @@ jobs:
   build:
     working_directory: /go/src/github.com/grafana/metrictank
     docker:
-      - image: circleci/golang:1.10
+      - image: circleci/golang:1.10.3
     steps:
       - checkout
       - run: scripts/build.sh
diff --git a/cluster/mock.go b/cluster/mock.go
index a1b25aa17e..8b3a5820da 100644
--- a/cluster/mock.go
+++ b/cluster/mock.go
@@ -48,12 +48,11 @@ func NewMockNode(isLocal bool, name string, postResponse []byte) *MockNode {
 }
 
 type MockClusterManager struct {
-	Peers           []*MockNode
-	membersForQuery []*MockNode
-	thisNode        int
-	isPrimary       bool
-	isReady         bool
-	partitions      []int32
+	Peers      []*MockNode
+	thisNode   int
+	isPrimary  bool
+	isReady    bool
+	partitions []int32
 }
 
 func (c *MockClusterManager) MemberList() []Node {
diff --git a/scripts/qa/unused.sh b/scripts/qa/unused.sh
index 7a14ef4507..3aa007d6aa 100755
--- a/scripts/qa/unused.sh
+++ b/scripts/qa/unused.sh
@@ -3,30 +3,28 @@
 DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
 # and cd into root project dir
 cd ${DIR}/../..
-#which unused &>/dev/null || go get -u honnef.co/go/tools/...
-#which varcheck &>/dev/null || go get github.com/opennota/check/cmd/varcheck
-#which structcheck &>/dev/null || go get github.com/opennota/check/cmd/structcheck
+which unused &>/dev/null || go get honnef.co/go/tools/cmd/unused
+which varcheck &>/dev/null || go get github.com/opennota/check/cmd/varcheck
+which structcheck &>/dev/null || go get github.com/opennota/check/cmd/structcheck
 # for https://github.com/remyoudompheng/go-misc/pull/14
 which deadcode &>/dev/null || go get -u github.com/Dieterbe/go-misc/deadcode
 
 ret=0
 
-# temporarily commented becaused the repo of "unused" is broken. uncomment once it is fixed
-#echo "## running unused"
-#unused .
-#r=$?
-#[ $r -gt $ret ] && ret=$r
+echo "## running unused"
+unused .
+r=$?
+[ $r -gt $ret ] && ret=$r
 
-# temporarily commented because a commit on the 31th of July also broke those two
-#echo "## running varcheck"
-#varcheck
-#r=$?
-#[ $r -gt $ret ] && ret=$r
+echo "## running varcheck"
+varcheck ./...
+r=$?
+[ $r -gt $ret ] && ret=$r
 
-#echo "## running structcheck"
-#structcheck
-#r=$?
-#[ $r -gt $ret ] && ret=$r
+echo "## running structcheck"
+structcheck ./...
+r=$?
+[ $r -gt $ret ] && ret=$r
 
 echo "## running deadcode"
 deadcode -test $(find . -type d | grep -v '.git' | grep -v vendor | grep -v docker)