xsbt-web-plugin | Servlet support for sbt | Build Tool library

I am running a scala 2.11.12 app on lift 3.3.0 built with sbt 1.3.8. I have tried 4.0.3 and 4.2.0 of xsbt-web-plugin. My app launches fine when I use jetty:start but when I use jetty:quickstart it fails to launch - I get a 500 error in the browser and when I check the application log in the console I see java.lang.NoSuchMethodError: 'int javax.servlet.http.HttpServletResponse.getStatus()' which causes the jetty instance to give back a 500.

** edit ive gone back further in my logile

What is the difference between how quickstart runs and how start runs? I cant figure out the problem.

Below is my build.sbt in case it helps. Below that Ive include the console logs for the request in jetty:quickstart showing the error Im getting. I dont get this error for jetty:start.

** edit 2 Ive jun jetty:start then show update, and jetty:quickstart then show update. They both have javax.servlet:servlet-api:2.5:default as a dependency. But jetty:start works fine and starts the container, while jetty:quickstart fails to initialize the container. I'm at a loss to understand why one works and one fails - it seems to me both should fail.

** edit 3 I figured out why servlet-api 2.5 was coming in, and have updated the paypal dependencies to fix that. I'd still love to know why jetty:start worked but jetty:quickstart didnt - they both seemingly should've failed.

build.sbt