Fix format error in lated go version

Author: aisk

.travis.yml

@@ -5,6 +5,14 @@ go:
   - 1.4
   - 1.5
   - 1.6
+  - 1.7
+  - 1.8
+  - 1.9
+  - '1.0'
+  - 1.11
+  - 1.12
+  - 1.13
+  - tip
 
 install: go get
 

scgi.go

@@ -143,7 +143,7 @@ func (s *Server) handleScgiRequest(fd io.ReadWriteCloser) {
 	defer fd.Close()
 	req, err := s.readScgiRequest(fd)
 	if err != nil {
-		s.Logger.Println("Error reading SCGI request: %q", err.Error())
+		s.Logger.Printf("Error reading SCGI request: %q\n", err.Error())
 		return
 	}
 	sc := scgiConn{fd, req, make(map[string][]string), false}

web_test.go

@@ -461,7 +461,7 @@ func TestReadScgiRequest(t *testing.T) {
 	var s Server
 	httpReq, err := s.readScgiRequest(&ioBuffer{input: req, output: nil})
 	if err != nil {
-		t.Fatalf("Error while reading SCGI request: ", err.Error())
+		t.Fatalf("Error while reading SCGI request: %s", err.Error())
 	}
 	if httpReq.ContentLength != 12 {
 		t.Fatalf("Content length mismatch, expected %d, got %d ", 12, httpReq.ContentLength)