do not manually update trace files for Debian

merlin/sync/post.go

@@ -4,8 +4,6 @@ import (
 	"io"
 	"os"
 	"os/exec"
-	"path/filepath"
-	"time"
 
 	"git.csclub.uwaterloo.ca/public/merlin/config"
 )
@@ -50,25 +48,8 @@ func zfsSync(repo *config.Repo) {
 func postSyncTraceUpdate(repo *config.Repo) {
 	switch repo.SyncType {
 	case "csc-sync-debian":
-		cscPostDebian(repo)
-	}
-}
-
-// update our trace file's modification date by writing the current time
-func cscPostDebian(repo *config.Repo) {
-	targetDir := filepath.Join(buildDownloadDir(repo), "project/trace")
-	target := filepath.Join(targetDir, config.Conf.Hostname)
-
-	os.MkdirAll(targetDir, 0755)
-	f, err := os.OpenFile(target, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
-
-	if err != nil {
-		repo.Logger.Error("Unable to open trace file: " + target)
-		return
-	}
-	if _, err = f.WriteString(time.Now().UTC().Format(time.RFC1123)); err != nil {
-		repo.Logger.Error("Unable to write to trace file: " + target)
-		return
+		// The ftpsync script provided by Debian takes care of updating the trace
+		// file, so we don't need to do this manually anymore.
 	}
 }