diff --git a/Makefile b/Makefile
index 8487febf1..cadf85442 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,8 @@
 GOTOOLS = \
 					github.com/mitchellh/gox \
 					github.com/Masterminds/glide \
-					github.com/alecthomas/gometalinter \
+					gopkg.in/alecthomas/gometalinter.v2 \
+					github.com/ckaznocha/protoc-gen-lint \
 					github.com/gogo/protobuf/protoc-gen-gogo \
 					github.com/gogo/protobuf/gogoproto
 
@@ -27,6 +28,9 @@ protoc:
 	##   ldconfig (may require sudo)
 	## https://stackoverflow.com/a/25518702
 	protoc $(INCLUDE) --gogo_out=plugins=grpc:. types/*.proto
+	@ echo "--> adding nolint declarations to protobuf generated files"
+	@ awk '/package types/ { print "//nolint: gas"; print; next }1' types/types.pb.go > types/types.pb.go.new
+	@ mv types/types.pb.go.new types/types.pb.go
 
 install:
 	@ go install ./cmd/...
@@ -59,19 +63,20 @@ get_deps:
 
 ensure_tools:
 	go get -u -v $(GOTOOLS)
-	@ gometalinter --install
+	@ gometalinter.v2 --install
 
 get_vendor_deps: ensure_tools
-	@rm -rf vendor/
-	@echo "--> Running glide install"
+	@ rm -rf vendor/
+	@ echo "--> Running glide install"
 	@ glide install
 
 metalinter_all:
-	gometalinter --vendor --deadline=600s --enable-all --disable=lll ./...
+	protoc $(INCLUDE) --lint_out=. types/*.proto
+	gometalinter.v2 --vendor --deadline=600s --enable-all --disable=lll ./...
 
 metalinter:
-	@ echo "==> Running linter"
-	gometalinter --vendor --deadline=600s --disable-all  \
+  @ echo "==> Running linter"
+	gometalinter.v2 --vendor --deadline=600s --disable-all  \
 		--enable=maligned \
 		--enable=deadcode \
 		--enable=goconst \
@@ -80,12 +85,12 @@ metalinter:
 	 	--enable=ineffassign \
 		--enable=megacheck \
 	 	--enable=misspell \
-	   	--enable=staticcheck \
+	  --enable=staticcheck \
 		--enable=safesql \
-	   	--enable=structcheck \
-	   	--enable=unconvert \
+	  --enable=structcheck \
+	  --enable=unconvert \
 		--enable=unused \
-	   	--enable=varcheck \
+	  --enable=varcheck \
 		--enable=vetshadow \
 		./...
 
@@ -95,8 +100,8 @@ metalinter:
 		#--enable=gocyclo \
 		#--enable=golint \ <== comments on anything exported
 		#--enable=gotype \
-	   	#--enable=interfacer \
-	   	#--enable=unparam \
+	  #--enable=interfacer \
+	  #--enable=unparam \
 		#--enable=vet \
 
 build-docker:
diff --git a/circle.yml b/circle.yml
index 7d4545e54..95d1dea5e 100644
--- a/circle.yml
+++ b/circle.yml
@@ -2,7 +2,6 @@ machine:
   environment:
     GOPATH: /home/ubuntu/.go_workspace
     REPO: $GOPATH/src/github.com/$CIRCLE_PROJECT_USERNAME/$CIRCLE_PROJECT_REPONAME
-    GO15VENDOREXPERIMENT: 1
   hosts:
     circlehost: 127.0.0.1
     localhost: 127.0.0.1
@@ -16,7 +15,7 @@ checkout:
 
 test:
   override:
-    - cd $REPO && make get_vendor_deps && make test_integrations
+    - cd $REPO && make get_vendor_deps && make metalinter_test && make test_integrations
   post:
     - cd "$REPO" && bash <(curl -s https://codecov.io/bash) -f coverage.txt
     - cd "$REPO" && mv coverage.txt "${CIRCLE_ARTIFACTS}"
diff --git a/tests/server/client.go b/tests/server/client.go
index f1757fe15..9cc8131d3 100644
--- a/tests/server/client.go
+++ b/tests/server/client.go
@@ -21,7 +21,7 @@ func InitChain(client abcicli.Client) error {
 	}
 	_, err := client.InitChainSync(types.RequestInitChain{Validators: vals})
 	if err != nil {
-		fmt.Println("Failed test: InitChain - %v", err)
+		fmt.Printf("Failed test: InitChain - %v\n", err)
 		return err
 	}
 	fmt.Println("Passed test: InitChain")
@@ -33,7 +33,7 @@ func SetOption(client abcicli.Client, key, value string) error {
 	log := res.GetLog()
 	if err != nil {
 		fmt.Println("Failed test: SetOption")
-		fmt.Printf("setting %v=%v: \nlog: %v", key, value, log)
+		fmt.Printf("setting %v=%v: \nlog: %v\n", key, value, log)
 		fmt.Println("Failed test: SetOption")
 		return err
 	}
@@ -46,12 +46,12 @@ func Commit(client abcicli.Client, hashExp []byte) error {
 	_, data := res.Code, res.Data
 	if err != nil {
 		fmt.Println("Failed test: Commit")
-		fmt.Printf("committing %v\nlog: %v", res.GetLog())
+		fmt.Printf("committing %v\nlog: %v\n", data, res.GetLog())
 		return err
 	}
 	if !bytes.Equal(data, hashExp) {
 		fmt.Println("Failed test: Commit")
-		fmt.Printf("Commit hash was unexpected. Got %X expected %X",
+		fmt.Printf("Commit hash was unexpected. Got %X expected %X\n",
 			data.Bytes(), hashExp)
 		return errors.New("CommitTx failed")
 	}
@@ -64,13 +64,13 @@ func DeliverTx(client abcicli.Client, txBytes []byte, codeExp uint32, dataExp []
 	code, data, log := res.Code, res.Data, res.Log
 	if code != codeExp {
 		fmt.Println("Failed test: DeliverTx")
-		fmt.Printf("DeliverTx response code was unexpected. Got %v expected %v. Log: %v",
+		fmt.Printf("DeliverTx response code was unexpected. Got %v expected %v. Log: %v\n",
 			code, codeExp, log)
 		return errors.New("DeliverTx error")
 	}
 	if !bytes.Equal(data, dataExp) {
 		fmt.Println("Failed test: DeliverTx")
-		fmt.Printf("DeliverTx response data was unexpected. Got %X expected %X",
+		fmt.Printf("DeliverTx response data was unexpected. Got %X expected %X\n",
 			data, dataExp)
 		return errors.New("DeliverTx error")
 	}
@@ -83,13 +83,13 @@ func CheckTx(client abcicli.Client, txBytes []byte, codeExp uint32, dataExp []by
 	code, data, log := res.Code, res.Data, res.Log
 	if code != codeExp {
 		fmt.Println("Failed test: CheckTx")
-		fmt.Printf("CheckTx response code was unexpected. Got %v expected %v. Log: %v",
+		fmt.Printf("CheckTx response code was unexpected. Got %v expected %v. Log: %v\n",
 			code, codeExp, log)
 		return errors.New("CheckTx")
 	}
 	if !bytes.Equal(data, dataExp) {
 		fmt.Println("Failed test: CheckTx")
-		fmt.Printf("CheckTx response data was unexpected. Got %X expected %X",
+		fmt.Printf("CheckTx response data was unexpected. Got %X expected %X\n",
 			data, dataExp)
 		return errors.New("CheckTx")
 	}
diff --git a/types/protoreplace/protoreplace.go b/types/protoreplace/protoreplace.go
index c859098f8..3ea0c73da 100644
--- a/types/protoreplace/protoreplace.go
+++ b/types/protoreplace/protoreplace.go
@@ -1,7 +1,7 @@
-package main
-
 // +build ignore
 
+package main
+
 import (
 	"bytes"
 	"fmt"
diff --git a/types/types.pb.go b/types/types.pb.go
index 14026a8b1..712726288 100644
--- a/types/types.pb.go
+++ b/types/types.pb.go
@@ -44,6 +44,7 @@ It has these top-level messages:
 	Evidence
 	KVPair
 */
+//nolint: gas
 package types
 
 import proto "github.com/gogo/protobuf/proto"