--- a/services/sync/modules/resource.js
+++ b/services/sync/modules/resource.js
@@ -166,16 +166,17 @@ Resource.prototype = {
       didTimeout = true;
       this._log.error(`Request timed out after ${this.ABORT_TIMEOUT}ms. Aborting.`);
       controller.abort();
     }, this.ABORT_TIMEOUT);
     let response;
     try {
       response = await responsePromise;
     } catch (e) {
+      this._log.warn(`${method} request to ${this.uri.spec} failed`, e);
       if (!didTimeout) {
         throw e;
       }
       throw Components.Exception("Request aborted (timeout)", Cr.NS_ERROR_NET_TIMEOUT);
     } finally {
       clearTimeout(timeoutId);
     }
     return this._processResponse(response, method);