Omar Padron edf9548310 bugfix: fetch prefers to fetch local mirrors over remote resources (#13545) ... - [x] insert at beginning of list so fetch grabs local mirrors before remote resources - [x] update the S3FetchStrategy so that it throws a SpackError if the fetch fails. Before, it was throwing URLError, which was not being caught in stage.py. - [x] move error handling out of S3FetchStrategy and into web_util.read_from_url() - [x] pass string instead of URLError to SpackWebError		2019-11-03 17:13:02 -08:00
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spack	bugfix: fetch prefers to fetch local mirrors over remote resources (#13545)	2019-11-03 17:13:02 -08:00