$ mupx logs --tail=50

Meteor Up: Production Quality Meteor Deployments
------------------------------------------------
Configuration file : mup.json
Settings file      : settings.json

[52.40.64.188]     at Object.<anonymous> (/bundle/bundle/programs/server/node_modules/fibers/fibers.js:16:8)
[52.40.64.188]     at Module._compile (module.js:456:26)
[52.40.64.188]     at Object.Module._extensions..js (module.js:474:10)
[52.40.64.188]     at Module.load (module.js:356:32)
[52.40.64.188]     at Function.Module._load (module.js:312:12)
[52.40.64.188]     at Module.require (module.js:364:17)
[52.40.64.188]     at require (module.js:380:17)
[52.40.64.188]     at Object.<anonymous> (/bundle/bundle/programs/server/boot.js:1:75)
[52.40.64.188]     at Module._compile (module.js:456:26)
[52.40.64.188]     at Object.Module._extensions..js (module.js:474:10)
[52.40.64.188] npm WARN deprecated This version of npm lacks support for important features,
[52.40.64.188] npm WARN deprecated such as scoped packages, offered by the primary npm
[52.40.64.188] npm WARN deprecated registry. Consider upgrading to at least npm@2, if not the
[52.40.64.188] npm WARN deprecated latest stable version. To upgrade to npm@2, run:
[52.40.64.188] npm WARN deprecated
[52.40.64.188] npm WARN deprecated   npm -g install npm@latest-2
[52.40.64.188] npm WARN deprecated
[52.40.64.188] npm WARN deprecated To upgrade to the latest stable version, run:
[52.40.64.188] npm WARN deprecated
[52.40.64.188] npm WARN deprecated   npm -g install npm@latest
[52.40.64.188] npm WARN deprecated
[52.40.64.188] npm WARN deprecated (Depending on how Node.js was installed on your system, you
[52.40.64.188] npm WARN deprecated may need to prefix the preceding commands with `sudo`, or if
[52.40.64.188] npm WARN deprecated on Windows, run them from an Administrator prompt.)
[52.40.64.188] npm WARN deprecated
[52.40.64.188] npm WARN deprecated If you're running the version of npm bundled with
[52.40.64.188] npm WARN deprecated Node.js 0.10 LTS, be aware that the next version of 0.10 LTS
[52.40.64.188] npm WARN deprecated will be bundled with a version of npm@2, which has some small
[52.40.64.188] npm WARN deprecated backwards-incompatible changes made to `npm run-script` and
[52.40.64.188] npm WARN deprecated semver behavior.
[52.40.64.188] npm WARN package.json meteor-dev-bundle@0.0.0 No description
[52.40.64.188] npm WARN package.json meteor-dev-bundle@0.0.0 No repository field.
[52.40.64.188] npm WARN package.json meteor-dev-bundle@0.0.0 No README data
[52.40.64.188] npm WARN cannot run in wd meteor-dev-bundle@0.0.0 node npm-rebuild.js (wd=/bundle/bundle/programs/server)
[52.40.64.188] => Starting meteor app on port:80
[52.40.64.188]
[52.40.64.188] /bundle/bundle/programs/server/node_modules/fibers/fibers.js:16
[52.40.64.188] 	throw new Error('`'+ modPath+ '.node` is missing. Try reinstalling `node-fibe
[52.40.64.188] 	      ^
[52.40.64.188] Error: `/bundle/bundle/programs/server/node_modules/fibers/bin/linux-x64-v8-3.14/fibers.node` is missing. Try reinstalling `node-fibers`?
[52.40.64.188]     at Object.<anonymous> (/bundle/bundle/programs/server/node_modules/fibers/fibers.js:16:8)
[52.40.64.188]     at Module._compile (module.js:456:26)
[52.40.64.188]     at Object.Module._extensions..js (module.js:474:10)
[52.40.64.188]     at Module.load (module.js:356:32)
[52.40.64.188]     at Function.Module._load (module.js:312:12)
[52.40.64.188]     at Module.require (module.js:364:17)
[52.40.64.188]     at require (module.js:380:17)
[52.40.64.188]     at Object.<anonymous> (/bundle/bundle/programs/server/boot.js:1:75)
[52.40.64.188]     at Module._compile (module.js:456:26)