Upgrade Error from v1.6.0.beta1 to 1.6.0.beta2?

I hope I’m not hijacking your thread, and it’s not the same error as yours, but when I tried updating from +281 to beta 2 yesterday it would always fail with the following:

$ cd /var/www/discourse && git fetch && git reset --hard HEAD@{upstream} HEAD is now at e7d1fa8 Merge pull request #4186 from shaktikatare1989/suspention-details-in-log . . . . . Compressing: docker-manager-app-c32d676193f61b3085ec0e77f8d9fca361291a549828d82d1e33c356786f8ca0.js gzip /var/www/discourse/public/assets/docker-manager-app-c32d676193f61b3085ec0e77f8d9fca361291a549828d82d1e33c356786f8ca0.js Bundling assets Compressing Javascript and Generating Source Maps rake aborted! Errno::ENOMEM: Cannot allocate memory - gzip -f -c -7 /var/www/discourse/public/assets/docker-manager-app-c32d676193f61b3085ec0e77f8d9fca361291a549828d82d1e33c356786f8ca0.js > /var/www/discourse/public/assets/docker-manager-app-c32d676193f61b3085ec0e77f8d9fca361291a549828d82d1e33c356786f8ca0.js.gz /var/www/discourse/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.6/lib/active_support/core_ext/kernel/agnostics.rb:7:in ``' /var/www/discourse/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.6/lib/active_support/core_ext/kernel/agnostics.rb:7:in ``' /var/www/discourse/lib/tasks/assets.rake:108:in `gzip' /var/www/discourse/lib/tasks/assets.rake:161:in `block (4 levels) in ' /var/www/discourse/lib/tasks/assets.rake:125:in `call' /var/www/discourse/lib/tasks/assets.rake:125:in `block in concurrent?' /var/www/discourse/lib/tasks/assets.rake:152:in `call' /var/www/discourse/lib/tasks/assets.rake:152:in `block (3 levels) in ' /var/www/discourse/lib/tasks/assets.rake:141:in `each' /var/www/discourse/lib/tasks/assets.rake:141:in `block (2 levels) in ' /var/www/discourse/lib/tasks/assets.rake:125:in `concurrent?' /var/www/discourse/lib/tasks/assets.rake:137:in `block in ' Tasks: TOP => assets:precompile