diff --git a/.goreleaser.yml b/.goreleaser.yml
index e3cdc393..edf9277d 100644
--- a/.goreleaser.yml
+++ b/.goreleaser.yml
@@ -37,6 +37,6 @@ changelog:
   sort: asc
   filters:
     exclude:
-    - '^docs:'
-    - '^test:'
-    - 'README'
+      - '^docs:'
+      - '^test:'
+      - 'README'
diff --git a/gomock/call.go b/gomock/call.go
index 7bdeab94..7345f654 100644
--- a/gomock/call.go
+++ b/gomock/call.go
@@ -295,7 +295,7 @@ func (c *Call) String() string {
 func (c *Call) matches(args []interface{}) error {
 	if !c.methodType.IsVariadic() {
 		if len(args) != len(c.args) {
-			return fmt.Errorf("Expected call at %s has the wrong number of arguments. Got: %d, want: %d",
+			return fmt.Errorf("expected call at %s has the wrong number of arguments. Got: %d, want: %d",
 				c.origin, len(args), len(c.args))
 		}
 
@@ -307,22 +307,22 @@ func (c *Call) matches(args []interface{}) error {
 				}
 
 				return fmt.Errorf(
-					"Expected call at %s doesn't match the argument at index %d.\nGot: %v\nWant: %v",
+					"expected call at %s doesn't match the argument at index %d.\nGot: %v\nWant: %v",
 					c.origin, i, got, m,
 				)
 			}
 		}
 	} else {
 		if len(c.args) < c.methodType.NumIn()-1 {
-			return fmt.Errorf("Expected call at %s has the wrong number of matchers. Got: %d, want: %d",
+			return fmt.Errorf("expected call at %s has the wrong number of matchers. Got: %d, want: %d",
 				c.origin, len(c.args), c.methodType.NumIn()-1)
 		}
 		if len(c.args) != c.methodType.NumIn() && len(args) != len(c.args) {
-			return fmt.Errorf("Expected call at %s has the wrong number of arguments. Got: %d, want: %d",
+			return fmt.Errorf("expected call at %s has the wrong number of arguments. Got: %d, want: %d",
 				c.origin, len(args), len(c.args))
 		}
 		if len(args) < len(c.args)-1 {
-			return fmt.Errorf("Expected call at %s has the wrong number of arguments. Got: %d, want: greater than or equal to %d",
+			return fmt.Errorf("expected call at %s has the wrong number of arguments. Got: %d, want: greater than or equal to %d",
 				c.origin, len(args), len(c.args)-1)
 		}
 
@@ -330,7 +330,7 @@ func (c *Call) matches(args []interface{}) error {
 			if i < c.methodType.NumIn()-1 {
 				// Non-variadic args
 				if !m.Matches(args[i]) {
-					return fmt.Errorf("Expected call at %s doesn't match the argument at index %s.\nGot: %v\nWant: %v",
+					return fmt.Errorf("expected call at %s doesn't match the argument at index %s.\nGot: %v\nWant: %v",
 						c.origin, strconv.Itoa(i), args[i], m)
 				}
 				continue
@@ -403,7 +403,7 @@ func (c *Call) dropPrereqs() (preReqs []*Call) {
 	return
 }
 
-func (c *Call) call(args []interface{}) []func([]interface{}) []interface{} {
+func (c *Call) call() []func([]interface{}) []interface{} {
 	c.numCalls++
 	return c.actions
 }
diff --git a/gomock/callset.go b/gomock/callset.go
index c44a8a58..b046b525 100644
--- a/gomock/callset.go
+++ b/gomock/callset.go
@@ -72,7 +72,7 @@ func (cs callSet) FindMatch(receiver interface{}, method string, args []interfac
 	for _, call := range expected {
 		err := call.matches(args)
 		if err != nil {
-			fmt.Fprintf(&callsErrors, "\n%v", err)
+			_, _ = fmt.Fprintf(&callsErrors, "\n%v", err)
 		} else {
 			return call, nil
 		}
@@ -83,12 +83,12 @@ func (cs callSet) FindMatch(receiver interface{}, method string, args []interfac
 	exhausted := cs.exhausted[key]
 	for _, call := range exhausted {
 		if err := call.matches(args); err != nil {
-			fmt.Fprintf(&callsErrors, "\n%v", err)
+			_, _ = fmt.Fprintf(&callsErrors, "\n%v", err)
 		}
 	}
 
 	if len(expected)+len(exhausted) == 0 {
-		fmt.Fprintf(&callsErrors, "there are no expected calls of the method %q for that receiver", method)
+		_, _ = fmt.Fprintf(&callsErrors, "there are no expected calls of the method %q for that receiver", method)
 	}
 
 	return nil, fmt.Errorf(callsErrors.String())
diff --git a/gomock/controller.go b/gomock/controller.go
index 75f23502..d7c3c656 100644
--- a/gomock/controller.go
+++ b/gomock/controller.go
@@ -209,7 +209,7 @@ func (ctrl *Controller) Call(receiver interface{}, method string, args ...interf
 			ctrl.expectedCalls.Remove(preReqCall)
 		}
 
-		actions := expected.call(args)
+		actions := expected.call()
 		if expected.exhausted() {
 			ctrl.expectedCalls.Remove(expected)
 		}
diff --git a/gomock/controller_test.go b/gomock/controller_test.go
index c0d42c86..c22908b8 100644
--- a/gomock/controller_test.go
+++ b/gomock/controller_test.go
@@ -426,7 +426,7 @@ func TestMaxTimes1(t *testing.T) {
 	ctrl.Call(subject, "FooMethod", "argument")
 	ctrl.Finish()
 
-	//It fails if there are more
+	// It fails if there are more
 	reporter, ctrl := createFixtures(t)
 	subject = new(Subject)
 	ctrl.RecordCall(subject, "FooMethod", "argument").MaxTimes(1)
@@ -757,7 +757,7 @@ func TestVariadicNoMatch(t *testing.T) {
 	ctrl.RecordCall(s, "VariadicMethod", 0)
 	rep.assertFatal(func() {
 		ctrl.Call(s, "VariadicMethod", 1)
-	}, "Expected call at", "doesn't match the argument at index 0",
+	}, "expected call at", "doesn't match the argument at index 0",
 		"Got: 1\nWant: is equal to 0")
 	ctrl.Call(s, "VariadicMethod", 0)
 	ctrl.Finish()
diff --git a/gomock/matchers.go b/gomock/matchers.go
index 7aa43a6d..70efc75c 100644
--- a/gomock/matchers.go
+++ b/gomock/matchers.go
@@ -89,7 +89,7 @@ func GotFormatterAdapter(s GotFormatter, m Matcher) Matcher {
 
 type anyMatcher struct{}
 
-func (anyMatcher) Matches(x interface{}) bool {
+func (anyMatcher) Matches(interface{}) bool {
 	return true
 }
 
diff --git a/mockgen/mockgen.go b/mockgen/mockgen.go
index a0d483f5..70bc55f1 100644
--- a/mockgen/mockgen.go
+++ b/mockgen/mockgen.go
@@ -158,7 +158,7 @@ func parseMockNames(names string) map[string]string {
 }
 
 func usage() {
-	io.WriteString(os.Stderr, usageText)
+	_, _ = io.WriteString(os.Stderr, usageText)
 	flag.PrintDefaults()
 }
 
@@ -305,14 +305,14 @@ func (g *generator) Generate(pkg *model.Package, pkgName string, outputPackagePa
 	g.p("")
 	g.p("import (")
 	g.in()
-	for path, pkg := range g.packageMap {
-		if path == outputPackagePath {
+	for pkgPath, pkg := range g.packageMap {
+		if pkgPath == outputPackagePath {
 			continue
 		}
-		g.p("%v %q", pkg, path)
+		g.p("%v %q", pkg, pkgPath)
 	}
-	for _, path := range pkg.DotImports {
-		g.p(". %q", path)
+	for _, pkgPath := range pkg.DotImports {
+		g.p(". %q", pkgPath)
 	}
 	g.out()
 	g.p(")")
@@ -357,9 +357,9 @@ func (g *generator) GenerateMockInterface(intf *model.Interface, outputPackagePa
 	g.p("")
 
 	// TODO: Re-enable this if we can import the interface reliably.
-	//g.p("// Verify that the mock satisfies the interface at compile time.")
-	//g.p("var _ %v = (*%v)(nil)", typeName, mockType)
-	//g.p("")
+	// g.p("// Verify that the mock satisfies the interface at compile time.")
+	// g.p("var _ %v = (*%v)(nil)", typeName, mockType)
+	// g.p("")
 
 	g.p("// New%v creates a new mock instance", mockType)
 	g.p("func New%v(ctrl *gomock.Controller) *%v {", mockType, mockType)
@@ -387,9 +387,9 @@ func (g *generator) GenerateMockInterface(intf *model.Interface, outputPackagePa
 func (g *generator) GenerateMockMethods(mockType string, intf *model.Interface, pkgOverride string) {
 	for _, m := range intf.Methods {
 		g.p("")
-		g.GenerateMockMethod(mockType, m, pkgOverride)
+		_ = g.GenerateMockMethod(mockType, m, pkgOverride)
 		g.p("")
-		g.GenerateMockRecorderMethod(mockType, m)
+		_ = g.GenerateMockRecorderMethod(mockType, m)
 	}
 }
 
diff --git a/mockgen/model/model.go b/mockgen/model/model.go
index b93e062a..9c143cfc 100644
--- a/mockgen/model/model.go
+++ b/mockgen/model/model.go
@@ -35,7 +35,7 @@ type Package struct {
 
 // Print writes the package name and its exported interfaces.
 func (pkg *Package) Print(w io.Writer) {
-	fmt.Fprintf(w, "package %s\n", pkg.Name)
+	_, _ = fmt.Fprintf(w, "package %s\n", pkg.Name)
 	for _, intf := range pkg.Interfaces {
 		intf.Print(w)
 	}
@@ -58,7 +58,7 @@ type Interface struct {
 
 // Print writes the interface name and its methods.
 func (intf *Interface) Print(w io.Writer) {
-	fmt.Fprintf(w, "interface %s\n", intf.Name)
+	_, _ = fmt.Fprintf(w, "interface %s\n", intf.Name)
 	for _, m := range intf.Methods {
 		m.Print(w)
 	}
@@ -79,19 +79,19 @@ type Method struct {
 
 // Print writes the method name and its signature.
 func (m *Method) Print(w io.Writer) {
-	fmt.Fprintf(w, "  - method %s\n", m.Name)
+	_, _ = fmt.Fprintf(w, "  - method %s\n", m.Name)
 	if len(m.In) > 0 {
-		fmt.Fprintf(w, "    in:\n")
+		_, _ = fmt.Fprintf(w, "    in:\n")
 		for _, p := range m.In {
 			p.Print(w)
 		}
 	}
 	if m.Variadic != nil {
-		fmt.Fprintf(w, "    ...:\n")
+		_, _ = fmt.Fprintf(w, "    ...:\n")
 		m.Variadic.Print(w)
 	}
 	if len(m.Out) > 0 {
-		fmt.Fprintf(w, "    out:\n")
+		_, _ = fmt.Fprintf(w, "    out:\n")
 		for _, p := range m.Out {
 			p.Print(w)
 		}
@@ -122,7 +122,7 @@ func (p *Parameter) Print(w io.Writer) {
 	if n == "" {
 		n = `""`
 	}
-	fmt.Fprintf(w, "    - %v: %v\n", n, p.Type.String(nil, ""))
+	_, _ = fmt.Fprintf(w, "    - %v: %v\n", n, p.Type.String(nil, ""))
 }
 
 // Type is a Go type.
@@ -264,6 +264,7 @@ func (nt *NamedType) String(pm map[string]string, pkgOverride string) string {
 
 	return nt.Type
 }
+
 func (nt *NamedType) addImports(im map[string]bool) {
 	if nt.Package != "" {
 		im[nt.Package] = true
@@ -283,8 +284,8 @@ func (pt *PointerType) addImports(im map[string]bool) { pt.Type.addImports(im) }
 // PredeclaredType is a predeclared type such as "int".
 type PredeclaredType string
 
-func (pt PredeclaredType) String(pm map[string]string, pkgOverride string) string { return string(pt) }
-func (pt PredeclaredType) addImports(im map[string]bool)                          {}
+func (pt PredeclaredType) String(map[string]string, string) string { return string(pt) }
+func (pt PredeclaredType) addImports(map[string]bool)              {}
 
 // The following code is intended to be called by the program generated by ../reflect.go.
 
diff --git a/mockgen/parse.go b/mockgen/parse.go
index 1fe16c5e..b0403e58 100644
--- a/mockgen/parse.go
+++ b/mockgen/parse.go
@@ -101,8 +101,8 @@ func parseFile(source string) (*model.Package, error) {
 	if err != nil {
 		return nil, err
 	}
-	for path := range dotImports {
-		pkg.DotImports = append(pkg.DotImports, path)
+	for pkgPath := range dotImports {
+		pkg.DotImports = append(pkg.DotImports, pkgPath)
 	}
 	return pkg, nil
 }
@@ -161,18 +161,18 @@ func (p *fileParser) addAuxInterfacesFromFile(pkg string, file *ast.File) {
 func (p *fileParser) parseFile(importPath string, file *ast.File) (*model.Package, error) {
 	allImports, dotImports := importsOfFile(file)
 	// Don't stomp imports provided by -imports. Those should take precedence.
-	for pkg, path := range allImports {
+	for pkg, pkgPath := range allImports {
 		if _, ok := p.imports[pkg]; !ok {
-			p.imports[pkg] = path
+			p.imports[pkg] = pkgPath
 		}
 	}
 	// Add imports from auxiliary files, which might be needed for embedded interfaces.
 	// Don't stomp any other imports.
 	for _, f := range p.auxFiles {
 		auxImports, _ := importsOfFile(f)
-		for pkg, path := range auxImports {
+		for pkg, pkgPath := range auxImports {
 			if _, ok := p.imports[pkg]; !ok {
-				p.imports[pkg] = path
+				p.imports[pkg] = pkgPath
 			}
 		}
 	}
diff --git a/mockgen/reflect.go b/mockgen/reflect.go
index 21a1b3d6..15f819ce 100644
--- a/mockgen/reflect.go
+++ b/mockgen/reflect.go
@@ -145,7 +145,7 @@ func reflect(importPath string, symbols []string) (*model.Package, error) {
 	}
 
 	if *progOnly {
-		os.Stdout.Write(program)
+		_, _ = os.Stdout.Write(program)
 		os.Exit(0)
 	}