Travis tests failing all of a sudden

[gibsramen]

Relevant to #106

Looks like something has gone wrong with the Travis build. After submitting the aforementioned PR, I noticed that the Travis build was failing with the following error:

ImportError (/usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.22' not found (required by /home/travis/miniconda/envs/test_env/lib/python3.6/site-packages/scipy/fft/_pocketfft/pypocketfft.cpython-36m-x86_64-linux-gnu.so))

@gwarmstrong suggested making a small change to the current (passing) Songbird master branch which I did here. This change should have no effect on the Travis build, yet it fails with the same error. (Test branch Travis build).

EDIT: Current passing build

[gwarmstrong]

Found this relevant thread

[mortonjt]

Sorry, I'm quite swamped and can't look at this for the next couple of weeks. But thanks for uncovering this

On Tue, Jan 21, 2020, 7:17 PM George Armstrong notifications@github.com wrote:

Found this https://askubuntu.com/questions/575505/glibcxx-3-4-20-not-found-how-to-fix-this-error relevant thread

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[gibsramen]

No problem - completely understand. Will work on our end to diagnose/fix the problem(s) and minimize effort on your part when you get the chance.

[fedarko]

Just to update this thread with the progress @gibsramen and @gwarmstrong have made -- looks like there are (at least) two three solutions that solve this problem:

1. sudo apt-get installing / upgrading a few GCC/C++-related packages

   • see George's commit here
   • solution described here

2. pip uninstalling and then reinstalling scipy

   • see Gibs' commit here
   • solution described here

3. bumping up the minimum tensorflow versions

   • see my PR here

Since any of these solutions works, I don't think which we use matters that much. Mostly I just wanted to document these solutions in a visible place here, since I imagine other people will run into these sorts of problems eventually -- it's likely worth updating the README FAQs at some point... :)

[fedarko]

This has been closed now that #108 has been merged in. Thanks @gwarmstrong!

[mortonjt]

Thanks!

On Wed, Feb 5, 2020, 5:57 PM Marcus Fedarko notifications@github.com wrote:

Closed #107 https://github.com/biocore/songbird/issues/107.

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