Meteor mup deploy error - meteor

Question

I am continuously getting this error on meteor app deployment using mup deploy command.
mup setup command is working just fine. When mup deploy starts, it executes many commands and reach to a command where it says
'minifying app code'. It stays there for 5-6 mins and then this error occurs.
What can be causing this error and how to resolve this?
mup deploy --verbose
Building App Bundle Locally
Minifying app code
=> Build Error. Check the logs printed above.
Error: build-error
at ChildProcess.<anonymous> (/usr/lib/node_modules/mup/lib/modules/meteor/build.js:46:16)
at emitTwo (events.js:106:13)
at ChildProcess.emit (events.js:194:7)
at maybeClose (internal/child_process.js:899:16)
at Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)
Here is my mup.js file.
Other stats
node v7.7.2
npm v4.1.2
module.exports = {
servers: {
one: {
// TODO: set host address, username, and authentication method
host: '54.218.35.182',
username: 'ubuntu',
pem: '~/.ssh/iAssureIT-Ubuntu2.pem'
// password: 'server-password'
// or neither for authenticate from ssh-agent
}
},
meteor: {
// TODO: change app name and path
name: 'musissive',
path: '/var/www/meteor/musissive',
servers: {
one: {},
},
buildOptions: {
serverOnly: true,
},
env: {
// TODO: Change to your app's url
// If you are using ssl, it needs to start with https://
ROOT_URL: 'http://musifyindia.com',
MONGO_URL: 'mongodb://localhost/meteor',
PORT: 3003,
},
docker: {
// change to 'kadirahq/meteord' if your app is not using Meteor 1.4
image: 'abernix/meteord:base',
},
// This is the maximum time in seconds it will wait
// for your app to start
// Add 30 seconds if the server has 512mb of ram
// And 30 more if you have binary npm dependencies.
deployCheckWaitTime: 2400,
// Show progress bar while uploading bundle to server
// You might need to disable it on CI servers
enableUploadProgressBar: true
},
mongo: {
port: 27017,
version: '3.4.1',
servers: {
one: {}
}
}
};

Answer 1

The error happening in meteor build had nothing to do with MUP.js. The issue was with low RAM on server. I was trying the build with free EC2 instance whihc has max 1 GB available. This is not sufficient for Meteor Build. When I upgraded to 4 GB instance, it started working just fine.