--- a/testing/geckodriver/CHANGES.md
+++ b/testing/geckodriver/CHANGES.md
@@ -1,13 +1,22 @@
 Change log
 ==========
 
 All notable changes to this program is documented in this file.
 
+Unreleased
+----------
+
+### Changed
+
+- Backtraces from geckodriver no longer substitute for missing
+  Marionette stacktraces
+
+
 0.19.1 (2017-10-30)
 -------------------
 
 ### Changed
 
 - Search suggestions in the location bar turned off as not to
   trigger network connections
 
@@ -23,17 +32,17 @@ 0.19.1 (2017-10-30)
 
 - Removed obsolete `socksUsername` and `socksPassword` proxy
   configuration keys because neither were picked up or recognised
 
 
 0.19.0 (2017-09-16)
 -------------------
 
-Note that with geckodriver v0.19.0 the following versions are recommended:
+Note that with geckodriver 0.19.0 the following versions are recommended:
 - Firefox 55.0 (and greater)
 - Selenium 3.5 (and greater)
 
 ### Added
 
 - Added endpoint:
   - POST `/session/{session id}/window/minimize` for the [Minimize Window]
     command

--- a/testing/webdriver/src/error.rs
+++ b/testing/webdriver/src/error.rs
@@ -1,9 +1,8 @@
-use backtrace::Backtrace;
 use hyper::status::StatusCode;
 use rustc_serialize::base64::FromBase64Error;
 use rustc_serialize::json::{DecoderError, Json, ParserError, ToJson};
 use std::borrow::Cow;
 use std::collections::BTreeMap;
 use std::convert::From;
 use std::error::Error;
 use std::fmt;
@@ -264,17 +263,17 @@ pub struct WebDriverError {
 
 impl WebDriverError {
     pub fn new<S>(error: ErrorStatus, message: S) -> WebDriverError
         where S: Into<Cow<'static, str>>
     {
         WebDriverError {
             error: error,
             message: message.into(),
-            stack: format!("{:?}", Backtrace::new()).into(),
+            stack: "".into(),
             delete_session: false,
         }
     }
 
     pub fn new_with_stack<S>(error: ErrorStatus, message: S, stack: S) -> WebDriverError
         where S: Into<Cow<'static, str>>
     {
         WebDriverError {

--- a/testing/webdriver/src/lib.rs
+++ b/testing/webdriver/src/lib.rs
@@ -1,11 +1,10 @@
 #![allow(non_snake_case)]
 
-extern crate backtrace;
 #[macro_use]
 extern crate log;
 extern crate rustc_serialize;
 extern crate hyper;
 extern crate regex;
 extern crate cookie;
 extern crate time;
 extern crate url;