From ae03782032672bae0f89bf1ad80f144dda2c9b41 Mon Sep 17 00:00:00 2001
From: Scott Wittenburg <scott.wittenburg@kitware.com>
Date: Thu, 16 Jul 2020 19:22:19 -0600
Subject: [PATCH] buildcache: list all mirrors even if one fails

---
 lib/spack/spack/binary_distribution.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/spack/spack/binary_distribution.py b/lib/spack/spack/binary_distribution.py
index 481c540bd9..6041891f44 100644
--- a/lib/spack/spack/binary_distribution.py
+++ b/lib/spack/spack/binary_distribution.py
@@ -884,8 +884,8 @@ def get_specs(allarch=False):
         except (URLError, web_util.SpackWebError) as url_err:
             tty.error('Failed to read index {0}'.format(index_url))
             tty.debug(url_err)
-            # Just return whatever specs we may already have cached
-            return _cached_specs
+            # Continue on to the next mirror
+            continue
 
         tmpdir = tempfile.mkdtemp()
         index_file_path = os.path.join(tmpdir, 'index.json')