Given following log snippets, their explanation, and nothing else, explain what failure, if any, occurred during build of this package.

  Snippets are in a format of [X] : [Y], where [X] is a log snippet, and [Y] is the explanation.

  Snippets are delimited with '================'.

  Drawing on information from all snippets, provide a concise explanation of the issue and recommend a solution.

  Explanation of the issue, and recommended solution, should take a handful of sentences.

  Snippets:

  [>           raise ConnectionError(e, request=request)
E           requests.exceptions.ConnectionError: HTTPSConnectionPool(host='raw.githubusercontent.com', port=443): Max retries exceeded with url: /scipy/dataset-ascent/main/ascent.dat (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x7ff3d1dc9250>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution'))]: [An exception indicates failed connection to the internet]

Issue: An offline build tries to download things from the internet
Resolution: Skip the tests that don't work offline.