2 files changed, 8 insertions, 12 deletions

diff --git a/services/sync/modules/engines/bookmarks.js b/services/sync/modules/engines/bookmarks.js
index 42d91f57e..41283c06d 100644
--- a/services/sync/modules/engines/bookmarks.js
+++ b/services/sync/modules/engines/bookmarks.js
@@ -373,8 +373,7 @@ BookmarksEngine.prototype = {
         // Failure to create a backup is somewhat bad, but probably not bad
         // enough to prevent syncing of bookmarks - so just log the error and
         // continue.
-        this._log.warn("Got exception \"" + Utils.exceptionStr(ex) +
-                       "\" backing up bookmarks, but continuing with sync.");
+        this._log.warn("Got exception backing up bookmarks, but continuing with sync.", ex);
         cb();
       }
     );
@@ -389,9 +388,8 @@ BookmarksEngine.prototype = {
       try {
         guidMap = this._buildGUIDMap();
       } catch (ex) {
-        this._log.warn("Got exception \"" + Utils.exceptionStr(ex) +
-                       "\" building GUID map." +
-                       " Skipping all other incoming items.");
+        this._log.warn("Got exception building GUID map." +
+                       " Skipping all other incoming items.", ex);
         throw {code: Engine.prototype.eEngineAbortApplyIncoming,
                cause: ex};
       }
@@ -637,7 +635,7 @@ BookmarksStore.prototype = {
         return true;
       }
     } catch(ex) {
-      this._log.debug("Failed to reparent item. " + Utils.exceptionStr(ex));
+      this._log.debug("Failed to reparent item. ", ex);
     }
     return false;
   },
@@ -1265,8 +1263,7 @@ BookmarksStore.prototype = {
       let u = PlacesUtils.bookmarks.getBookmarkURI(itemID);
       this._tagURI(u, tags);
     } catch (e) {
-      this._log.warn("Got exception fetching URI for " + itemID + ": not tagging. " +
-                     Utils.exceptionStr(e));
+      this._log.warn("Got exception fetching URI for " + itemID + ": not tagging. ", e);
 
       // I guess it doesn't have a URI. Don't try to tag it.
       return;
diff --git a/services/sync/modules/engines/passwords.js b/services/sync/modules/engines/passwords.js
index 2837b6a10..0ccd2e7b0 100644
--- a/services/sync/modules/engines/passwords.js
+++ b/services/sync/modules/engines/passwords.js
@@ -67,7 +67,7 @@ PasswordEngine.prototype = {
         Svc.Prefs.set("deletePwdFxA", true);
         Svc.Prefs.reset("deletePwd"); // The old prefname we previously used.
       } catch (ex) {
-        this._log.debug("Password deletes failed: " + Utils.exceptionStr(ex));
+        this._log.debug("Password deletes failed: ", ex);
       }
     }
   },
@@ -213,7 +213,7 @@ PasswordStore.prototype = {
       Services.logins.addLogin(login);
     } catch(ex) {
       this._log.debug("Adding record " + record.id +
-                      " resulted in exception " + Utils.exceptionStr(ex));
+                      " resulted in exception ", ex);
     }
   },
 
@@ -246,8 +246,7 @@ PasswordStore.prototype = {
       Services.logins.modifyLogin(loginItem, newinfo);
     } catch(ex) {
       this._log.debug("Modifying record " + record.id +
-                      " resulted in exception " + Utils.exceptionStr(ex) +
-                      ". Not modifying.");
+                      " resulted in exception. Not modifying.", ex);
     }
   },