[CI] OSX Builds on Travis-CI time out often

[asfimport]

It looks like this command:

brew bundle --file=cpp/Brewfile

takes quite awhile to run. In this build (https://travis-ci.org/cpcloud/arrow/jobs/299219939) it took about 16 minutes to run.

Is there something we can do to make this faster or use something else to install those packages?

cc @kou @xhochy

Reporter: Phillip Cloud / @cpcloud
Assignee: Uwe Korn / @xhochy

PRs and other links:

• GitHub Pull Request #1295

_{Note: This issue was originally created as ARROW-1781. Please see the migration documentation for further details.}

[asfimport]

Wes McKinney / @wesm:
I think we'd be better off getting these toolchain bits from conda-forge

[asfimport]

Uwe Korn / @xhochy:
16min sounds way too long, this is probably due to one of the dependencies being built by brew. I will make a PR that pulls the things from conda.

[asfimport]

Wes McKinney / @wesm:
Issue resolved by pull request 1295
#1295