what is ELF - something line feed?

i'm getting this error in travis and i have no idea what it means:

/home/travis/.nvm/v0.11.13/bin/node:1
(function (exports, require, module, __filename, __dirname) { ELF
                                                          ^
SyntaxError: Unexpected token ILLEGAL

it also doesn't work on my local OS X - it just stalls. what does this mean?

reference: https://travis-ci.org/normalize/shorthands.js/builds/32499909

what happens is that somewhere in your code node binary is used with require, something like require('/home/travis/.nvm/v0.11.13/bin/node'). Since it's not a valid js file, it causes SyntaxError. ELF is just a part of the binary, see wikipedia