ci: fix more errors

Author: ylchen07

integration/main_test.go

@@ -2,7 +2,7 @@ package integration
 
 import (
 	"encoding/json"
-	"fmt"
+	"errors"
 	"io/ioutil"
 	"log"
 	"os"

pkg/imp/github/issue.go

@@ -3,9 +3,9 @@ package github
 import (
 	"bytes"
 	"crypto/md5"
-	"fmt"
 	"hash"
 	"io"
+	"strconv"
 	"time"
 
 	"github.com/gofrs/uuid"
@@ -15,7 +15,6 @@ import (
 // IssueData is a compact way to represent an issue
 // so that templates can be expanded simply (without nested properties).
 type IssueData struct {
-
 	// internal properties
 	uuidHash hash.Hash     // to generate UUID's
 	buf      *bytes.Buffer // to expand templates into

taskset.go

@@ -3,6 +3,7 @@ package dstask
 // main task data structures
 
 import (
+	"errors"
 	"fmt"
 	"log"
 	"os"