diff --git a/Makefile b/Makefile
index 609f3134..e3ae23cf 100644
--- a/Makefile
+++ b/Makefile
@@ -17,9 +17,7 @@ FRONTEND_DIR             = $(BIN_DIR)/ui/app
 DOCKER_IMAGE_NAME       ?= alertmanager
 ERRCHECK_BINARY         := $(FIRST_GOPATH)/bin/errcheck
 
-STATICCHECK_IGNORE = \
-  github.com/prometheus/alertmanager/notify/notify.go:SA6002
-
+STATICCHECK_IGNORE =
 
 # Go modules needs the bzr binary because of the dependency on launchpad.net/gocheck.
 $(eval $(call PRECHECK_COMMAND_template,bzr))
diff --git a/Makefile.common b/Makefile.common
index 741579e6..fff85f92 100644
--- a/Makefile.common
+++ b/Makefile.common
@@ -29,6 +29,8 @@ GO           ?= go
 GOFMT        ?= $(GO)fmt
 FIRST_GOPATH := $(firstword $(subst :, ,$(shell $(GO) env GOPATH)))
 GOOPTS       ?=
+GOHOSTOS     ?= $(shell $(GO) env GOHOSTOS)
+GOHOSTARCH   ?= $(shell $(GO) env GOHOSTARCH)
 
 GO_VERSION        ?= $(shell $(GO) version)
 GO_VERSION_NUMBER ?= $(word 3, $(GO_VERSION))
@@ -62,17 +64,30 @@ PROMU        := $(FIRST_GOPATH)/bin/promu
 STATICCHECK  := $(FIRST_GOPATH)/bin/staticcheck
 pkgs          = ./...
 
-GO_VERSION        ?= $(shell $(GO) version)
-GO_BUILD_PLATFORM ?= $(subst /,-,$(lastword $(GO_VERSION)))
+ifeq (arm, $(GOHOSTARCH))
+	GOHOSTARM ?= $(shell GOARM= $(GO) env GOARM)
+	GO_BUILD_PLATFORM ?= $(GOHOSTOS)-$(GOHOSTARCH)v$(GOHOSTARM)
+else
+	GO_BUILD_PLATFORM ?= $(GOHOSTOS)-$(GOHOSTARCH)
+endif
 
 PROMU_VERSION ?= 0.2.0
 PROMU_URL     := https://github.com/prometheus/promu/releases/download/v$(PROMU_VERSION)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM).tar.gz
+STATICCHECK_VERSION ?= 2019.1
+STATICCHECK_URL     := https://github.com/dominikh/go-tools/releases/download/$(STATICCHECK_VERSION)/staticcheck_$(GOHOSTOS)_$(GOHOSTARCH)
 
 PREFIX                  ?= $(shell pwd)
 BIN_DIR                 ?= $(shell pwd)
 DOCKER_IMAGE_TAG        ?= $(subst /,-,$(shell git rev-parse --abbrev-ref HEAD))
 DOCKER_REPO             ?= prom
 
+ifeq ($(GOHOSTARCH),amd64)
+        ifeq ($(GOHOSTOS),$(filter $(GOHOSTOS),linux freebsd darwin windows))
+                # Only supported on amd64
+                test-flags := -race
+        endif
+endif
+
 .PHONY: all
 all: precheck style staticcheck unused build test
 
@@ -110,12 +125,12 @@ common-test-short:
 .PHONY: common-test
 common-test:
 	@echo ">> running all tests"
-	GO111MODULE=$(GO111MODULE) $(GO) test -race $(GOOPTS) $(pkgs)
+	GO111MODULE=$(GO111MODULE) $(GO) test $(test-flags) $(GOOPTS) $(pkgs)
 
 .PHONY: common-format
 common-format:
 	@echo ">> formatting code"
-	GO111MODULE=$(GO111MODULE) $(GO) fmt $(GOOPTS) $(pkgs)
+	GO111MODULE=$(GO111MODULE) $(GO) fmt $(pkgs)
 
 .PHONY: common-vet
 common-vet:
@@ -125,8 +140,12 @@ common-vet:
 .PHONY: common-staticcheck
 common-staticcheck: $(STATICCHECK)
 	@echo ">> running staticcheck"
+	chmod +x $(STATICCHECK)
 ifdef GO111MODULE
-	GO111MODULE=$(GO111MODULE) $(STATICCHECK) -ignore "$(STATICCHECK_IGNORE)" -checks "SA*" $(pkgs)
+# 'go list' needs to be executed before staticcheck to prepopulate the modules cache.
+# Otherwise staticcheck might fail randomly for some reason not yet explained.
+	GO111MODULE=$(GO111MODULE) $(GO) list -e -compiled -test=true -export=false -deps=true -find=false -tags= -- ./... > /dev/null
+	GO111MODULE=$(GO111MODULE) $(STATICCHECK) -ignore "$(STATICCHECK_IGNORE)" $(pkgs)
 else
 	$(STATICCHECK) -ignore "$(STATICCHECK_IGNORE)" $(pkgs)
 endif
@@ -140,8 +159,9 @@ else
 ifdef GO111MODULE
 	@echo ">> running check for unused/missing packages in go.mod"
 	GO111MODULE=$(GO111MODULE) $(GO) mod tidy
+ifeq (,$(wildcard vendor))
 	@git diff --exit-code -- go.sum go.mod
-ifneq (,$(wildcard vendor))
+else
 	@echo ">> running check for unused packages in vendor/"
 	GO111MODULE=$(GO111MODULE) $(GO) mod vendor
 	@git diff --exit-code -- go.sum go.mod vendor/
@@ -175,30 +195,20 @@ common-docker-tag-latest:
 promu: $(PROMU)
 
 $(PROMU):
-	curl -s -L $(PROMU_URL) | tar -xvz -C /tmp
-	mkdir -v -p $(FIRST_GOPATH)/bin
-	cp -v /tmp/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM)/promu $(PROMU)
+	$(eval PROMU_TMP := $(shell mktemp -d))
+	curl -s -L $(PROMU_URL) | tar -xvzf - -C $(PROMU_TMP)
+	mkdir -p $(FIRST_GOPATH)/bin
+	cp $(PROMU_TMP)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM)/promu $(FIRST_GOPATH)/bin/promu
+	rm -r $(PROMU_TMP)
 
 .PHONY: proto
 proto:
 	@echo ">> generating code from proto files"
 	@./scripts/genproto.sh
 
-.PHONY: $(STATICCHECK)
 $(STATICCHECK):
-ifdef GO111MODULE
-# Get staticcheck from a temporary directory to avoid modifying the local go.{mod,sum}.
-# See https://github.com/golang/go/issues/27643.
-# For now, we are using the next branch of staticcheck because master isn't compatible yet with Go modules.
-	tmpModule=$$(mktemp -d 2>&1) && \
-	mkdir -p $${tmpModule}/staticcheck && \
-	cd "$${tmpModule}"/staticcheck && \
-	GO111MODULE=on $(GO) mod init example.com/staticcheck && \
-	GO111MODULE=on GOOS= GOARCH= $(GO) get -u honnef.co/go/tools/cmd/staticcheck@next && \
-	rm -rf $${tmpModule};
-else
-	GOOS= GOARCH= GO111MODULE=off $(GO) get -u honnef.co/go/tools/cmd/staticcheck
-endif
+	mkdir -p $(FIRST_GOPATH)/bin
+	curl -s -L $(STATICCHECK_URL) > $(STATICCHECK)
 
 ifdef GOVENDOR
 .PHONY: $(GOVENDOR)
diff --git a/api/v1/api.go b/api/v1/api.go
index 6b19cd53..a8e2cc52 100644
--- a/api/v1/api.go
+++ b/api/v1/api.go
@@ -165,7 +165,6 @@ func (api *API) Update(cfg *config.Config, resolveTimeout time.Duration) error {
 type errorType string
 
 const (
-	errorNone     errorType = ""
 	errorInternal errorType = "server_error"
 	errorBadData  errorType = "bad_data"
 )
diff --git a/cli/routing.go b/cli/routing.go
index eaafbe6a..9d9556b3 100644
--- a/cli/routing.go
+++ b/cli/routing.go
@@ -29,7 +29,6 @@ type routingShow struct {
 	configFile        string
 	labels            []string
 	expectedReceivers string
-	tree              treeprint.Tree
 	debugTree         bool
 }
 
@@ -106,15 +105,15 @@ func getMatchingTree(route *dispatch.Route, tree treeprint.Tree, lset client.Lab
 	final := true
 	branch := tree.AddBranch(getRouteTreeSlug(route, false, false))
 	for _, r := range route.Routes {
-		if r.Matchers.Match(convertClientToCommonLabelSet(lset)) == true {
+		if r.Matchers.Match(convertClientToCommonLabelSet(lset)) {
 			getMatchingTree(r, branch, lset)
 			final = false
-			if r.Continue != true {
+			if !r.Continue {
 				break
 			}
 		}
 	}
-	if final == true {
+	if final {
 		branch.SetValue(getRouteTreeSlug(route, false, true))
 	}
 }
diff --git a/cli/test_routing.go b/cli/test_routing.go
index 2c68bad8..0a35d4e9 100644
--- a/cli/test_routing.go
+++ b/cli/test_routing.go
@@ -84,7 +84,7 @@ func (c *routingShow) routingTestAction(ctx context.Context, _ *kingpin.ParseCon
 		kingpin.Fatalf("Failed to parse labels: %v\n", err)
 	}
 
-	if c.debugTree == true {
+	if c.debugTree {
 		printMatchingTree(mainRoute, ls)
 	}
 
diff --git a/cli/utils.go b/cli/utils.go
index 66b481ed..929ded42 100644
--- a/cli/utils.go
+++ b/cli/utils.go
@@ -112,7 +112,7 @@ func loadAlertmanagerConfig(ctx context.Context, alertmanagerURL *url.URL, confi
 		}
 		return status.ConfigJSON, nil
 	}
-	return nil, errors.New("Failed to get Alertmanager configuration.")
+	return nil, errors.New("failed to get Alertmanager configuration")
 }
 
 // convertClientToCommonLabelSet converts client.LabelSet to model.Labelset
diff --git a/client/client.go b/client/client.go
index 976fe62b..fbeedc90 100644
--- a/client/client.go
+++ b/client/client.go
@@ -31,11 +31,10 @@ import (
 const (
 	apiPrefix = "/api/v1"
 
-	epStatus      = apiPrefix + "/status"
-	epSilence     = apiPrefix + "/silence/:id"
-	epSilences    = apiPrefix + "/silences"
-	epAlerts      = apiPrefix + "/alerts"
-	epAlertGroups = apiPrefix + "/alerts/groups"
+	epStatus   = apiPrefix + "/status"
+	epSilence  = apiPrefix + "/silence/:id"
+	epSilences = apiPrefix + "/silences"
+	epAlerts   = apiPrefix + "/alerts"
 
 	statusSuccess = "success"
 	statusError   = "error"
diff --git a/client/client_test.go b/client/client_test.go
index 56004363..b9bdf47b 100644
--- a/client/client_test.go
+++ b/client/client_test.go
@@ -319,7 +319,7 @@ func TestAPI(t *testing.T) {
 			if err != nil {
 				t.Fatal(err)
 			}
-			if bytes.Compare(want, got) != 0 {
+			if !bytes.Equal(want, got) {
 				t.Errorf("unexpected result: want: %s, got: %s", string(want), string(got))
 			}
 		})
diff --git a/nflog/nflogpb/set_test.go b/nflog/nflogpb/set_test.go
index 49fe1d33..5a2182a4 100644
--- a/nflog/nflogpb/set_test.go
+++ b/nflog/nflogpb/set_test.go
@@ -84,7 +84,7 @@ func newSubset(elements ...uint64) map[uint64]struct{} {
 
 func elements(m map[uint64]struct{}) []uint64 {
 	els := make([]uint64, 0, len(m))
-	for k, _ := range m {
+	for k := range m {
 		els = append(els, k)
 	}
 
diff --git a/notify/impl.go b/notify/impl.go
index 5d514b76..c2f7b670 100644
--- a/notify/impl.go
+++ b/notify/impl.go
@@ -895,7 +895,7 @@ func (n *Hipchat) Notify(ctx context.Context, as ...*types.Alert) (bool, error)
 	)
 	apiURL.Path += fmt.Sprintf("v2/room/%s/notification", roomid)
 	q := apiURL.Query()
-	q.Set("auth_token", fmt.Sprintf("%s", n.conf.AuthToken))
+	q.Set("auth_token", string(n.conf.AuthToken))
 	apiURL.RawQuery = q.Encode()
 
 	if n.conf.MessageFormat == "html" {
@@ -1007,7 +1007,7 @@ func (n *Wechat) Notify(ctx context.Context, as ...*types.Alert) (bool, error) {
 	}
 
 	// Refresh AccessToken over 2 hours
-	if n.accessToken == "" || time.Now().Sub(n.accessTokenAt) > 2*time.Hour {
+	if n.accessToken == "" || time.Since(n.accessTokenAt) > 2*time.Hour {
 		parameters := url.Values{}
 		parameters.Add("corpsecret", tmpl(string(n.conf.APISecret)))
 		parameters.Add("corpid", tmpl(string(n.conf.CorpID)))
diff --git a/notify/notify.go b/notify/notify.go
index 4e28428d..bf72b2db 100644
--- a/notify/notify.go
+++ b/notify/notify.go
@@ -489,6 +489,7 @@ func getHashBuffer() []byte {
 
 func putHashBuffer(b []byte) {
 	b = b[:0]
+	//lint:ignore SA6002 relax staticcheck verification.
 	hashBuffers.Put(b)
 }
 
diff --git a/pkg/parse/parse.go b/pkg/parse/parse.go
index 1a03592d..fd526aba 100644
--- a/pkg/parse/parse.go
+++ b/pkg/parse/parse.go
@@ -33,12 +33,8 @@ var (
 
 func Matchers(s string) ([]*labels.Matcher, error) {
 	matchers := []*labels.Matcher{}
-	if strings.HasPrefix(s, "{") {
-		s = s[1:]
-	}
-	if strings.HasSuffix(s, "}") {
-		s = s[:len(s)-1]
-	}
+	s = strings.TrimPrefix(s, "{")
+	s = strings.TrimSuffix(s, "}")
 
 	var insideQuotes bool
 	var token string
diff --git a/test/with_api_v1/acceptance.go b/test/with_api_v1/acceptance.go
index 97265ce7..ea181d5c 100644
--- a/test/with_api_v1/acceptance.go
+++ b/test/with_api_v1/acceptance.go
@@ -191,7 +191,7 @@ func (t *AcceptanceTest) Run() {
 	deadline := t.opts.expandTime(latest)
 
 	select {
-	case <-time.After(deadline.Sub(time.Now())):
+	case <-time.After(time.Until(deadline)):
 		// continue
 	case err := <-errc:
 		t.Error(err)
@@ -213,7 +213,7 @@ func (t *AcceptanceTest) runActions() {
 
 		for _, f := range fs {
 			go func(f func()) {
-				time.Sleep(ts.Sub(time.Now()))
+				time.Sleep(time.Until(ts))
 				f()
 				wg.Done()
 			}(f)
diff --git a/test/with_api_v2/acceptance.go b/test/with_api_v2/acceptance.go
index 81c49057..2725d52f 100644
--- a/test/with_api_v2/acceptance.go
+++ b/test/with_api_v2/acceptance.go
@@ -199,7 +199,7 @@ func (t *AcceptanceTest) Run() {
 	deadline := t.opts.expandTime(latest)
 
 	select {
-	case <-time.After(deadline.Sub(time.Now())):
+	case <-time.After(time.Until(deadline)):
 		// continue
 	case err := <-errc:
 		t.Error(err)
@@ -216,7 +216,7 @@ func (t *AcceptanceTest) runActions() {
 
 		for _, f := range fs {
 			go func(f func()) {
-				time.Sleep(ts.Sub(time.Now()))
+				time.Sleep(time.Until(ts))
 				f()
 				wg.Done()
 			}(f)
diff --git a/types/types.go b/types/types.go
index 1299f45a..67713584 100644
--- a/types/types.go
+++ b/types/types.go
@@ -373,10 +373,6 @@ type Silence struct {
 	CreatedBy string `json:"createdBy"`
 	Comment   string `json:"comment,omitempty"`
 
-	// timeFunc provides the time against which to evaluate
-	// the silence. Used for test injection.
-	now func() time.Time
-
 	Status SilenceStatus `json:"status"`
 }