CI: TravisCI Failing
Good: https://travis-ci.org/pandas-dev/pandas/jobs/660156644#L7
Bad: https://travis-ci.org/pandas-dev/pandas/jobs/660210493#L1

https://travis-ci.org/pandas-dev/pandas/jobs/660210493#L175-L177 looks strange.

```
$ export PATTERN=""(not slow and not network and not clipboard)""

/home/travis/.travis/functions: eval: line 109: syntax error near unexpected token `('

/home/travis/.travis/functions: eval: line 109: `export PATTERN=""(not slow and not network and not clipboard)"" '
```

Most likely something changed on the TravisCI end. Opening this to track it.