Errors downloading some extensions

[njx]

Whenever I run grabem, I get a few extensions that fail to download. There seem to be a few different kinds of errors:

Problem unpacking downloads/zips/camden.caniuse-2.0.3.zip
{ [Error: EMFILE, open 'downloads/zips/camden.caniuse-2.0.3.zip']
  errno: 20,
  code: 'EMFILE',
  path: 'downloads/zips/camden.caniuse-2.0.3.zip' }

Error downloading https://s3.amazonaws.com/extend.brackets/flovalence.imagetodata/flovalence.imagetodata-1.3.0.zip
{ [Error: connect EMFILE]
  code: 'EMFILE',
  errno: 'EMFILE',
  syscall: 'connect',
  url: 'https://s3.amazonaws.com/extend.brackets/flovalence.imagetodata/flovalence.imagetodata-1.3.0.zip' }

Error downloading https://s3.amazonaws.com/extend.brackets/dehats.ccextbuilder/dehats.ccextbuilder-0.7.3.zip
{ [Error: getaddrinfo ENOTFOUND]
  code: 'ENOTFOUND',
  errno: 'ENOTFOUND',
  syscall: 'getaddrinfo',
  url: 'https://s3.amazonaws.com/extend.brackets/dehats.ccextbuilder/dehats.ccextbuilder-0.7.3.zip' }

[njx]

(btw, there were two instances of the first error--the other was in camden.csslint-2.0.8.zip)