Build Error when trying to deploy ndjson package to shinyapps.io

[josh]

The switch to Ubuntu 16.04 will take place later today.

Update on R 3.5.0 on shinyapps.io

First of all, thank you for bearing with us in this delay. Historically new versions of R were made available for Ubuntu on CRAN just a few days after the regular release, and we were caught flat-footed; our apologies. In order to support R 3.5.0 and to have more control in the future, on 5/31/2018 we will be updating the base system that we provide on shinyapps.io from Ubuntu 14.04 (trusty) to Ubuntu 16.04 (xenial). Initially only new applications and new deployments of existing applications will take advantage of this. If you run into any issues while deploying your application after this change, please reach out to us (here, or at shinyapps-support@rstudio.com if you are on paid plan) an…