What new feature of FreeBSD 10.2 is required by Rocket?

We can perhaps install it directly if it's userland-related.

In the rocket chat doc it's noted:

Prerequisites

Valid for:

• FreeBSD 10.2-RELEASE

Please use a fresh system without traces of node or npm. Most of my initial problems came from old and/or special versions of node/npm/meteor

Well...

To install right now a 10.2 userland with a 10.1 kernel isn't a optimal solution, so I'd suggest to read the "Valid for 10.2-RELEASE" as "Tested under 10.2 and will so be OK under 10.x and a fresh ports tree":

• The wiki page has been created very recently, so I guess FreeBSD 10.2 is the OS version the page creator has tested
• A short survol of the release notes doesn't pop any thing pertinent to Node
• FreeBSD don't freeze ports/packages by system version: the ports tree and the base system are independent in term of release engineering
• If you wish to get the freshest stuff, you need to use ports system, not packages: https://www.freebsd.org/doc/handbook/ports-using.html

Pro tip. Save the compiled packages.

If you reach to a working fresh installation of Node following this result, I'd suggest to publish them to ftp://ftp.nasqueron.org/pub/freebsd/packages/ so (1) you don't need to recompile next time (2) we can suggest to users to download up-to-date packages.