diff --git a/gomock/call.go b/gomock/call.go
index e1ea826..ef76fd3 100644
--- a/gomock/call.go
+++ b/gomock/call.go
@@ -251,11 +251,7 @@ func (c *Call) SetArg(n int, value any) *Call {
 			c.t.Fatalf("SetArg(%d, ...) argument is a %v, not assignable to %v [%s]",
 				n, vt, dt, c.origin)
 		}
-	case reflect.Interface:
-		// nothing to do
-	case reflect.Slice:
-		// nothing to do
-	case reflect.Map:
+	case reflect.Interface, reflect.Slice, reflect.Map:
 		// nothing to do
 	default:
 		c.t.Fatalf("SetArg(%d, ...) referring to argument of non-pointer non-interface non-slice non-map type %v [%s]",
diff --git a/mockgen/generic.go b/mockgen/generic.go
index d425e77..c2289c2 100644
--- a/mockgen/generic.go
+++ b/mockgen/generic.go
@@ -12,7 +12,6 @@ import (
 	"fmt"
 	"go/ast"
 	"go/token"
-	"strings"
 
 	"go.uber.org/mock/mockgen/model"
 )
@@ -64,29 +63,6 @@ func (p *fileParser) parseGenericType(pkg string, typ ast.Expr, tps map[string]m
 	return nil, nil
 }
 
-func getIdentTypeParams(decl any) string {
-	if decl == nil {
-		return ""
-	}
-	ts, ok := decl.(*ast.TypeSpec)
-	if !ok {
-		return ""
-	}
-	if ts.TypeParams == nil || len(ts.TypeParams.List) == 0 {
-		return ""
-	}
-	var sb strings.Builder
-	sb.WriteString("[")
-	for i, v := range ts.TypeParams.List {
-		if i != 0 {
-			sb.WriteString(", ")
-		}
-		sb.WriteString(v.Names[0].Name)
-	}
-	sb.WriteString("]")
-	return sb.String()
-}
-
 func (p *fileParser) parseGenericMethod(field *ast.Field, it *namedInterface, iface *model.Interface, pkg string, tps map[string]model.Type) ([]*model.Method, error) {
 	var indices []ast.Expr
 	var typ ast.Expr
diff --git a/mockgen/mockgen.go b/mockgen/mockgen.go
index cca4467..7fe3770 100644
--- a/mockgen/mockgen.go
+++ b/mockgen/mockgen.go
@@ -256,7 +256,7 @@ type generator struct {
 }
 
 func (g *generator) p(format string, args ...any) {
-	fmt.Fprintf(&g.buf, g.indent+format+"\n", args...)
+	_, _ = fmt.Fprintf(&g.buf, g.indent+format+"\n", args...)
 }
 
 func (g *generator) in() {