Comment 8 for bug 1668876

To pro-actively see what else was broken I did this. The errors below are just 'arch=amd64 release=yakkety'. I'll go ahead and run a full pass.

$ bzr branch lp:simplestreams simplestreams
$ cd simplestreams

# I then modified sstream-mirror to only warn on errors
# and log to file /tmp/errors.log
$ bzr diff
=== modified file 'simplestreams/mirrors/__init__.py'
--- simplestreams/mirrors/__init__.py 2016-06-10 11:20:18 +0000
+++ simplestreams/mirrors/__init__.py 2017-03-01 13:41:33 +0000
@@ -473,9 +473,16 @@
         if not self.config.get('item_download', True):
             return
         LOG.debug("inserting %s to %s", contentsource.url, data['path'])
- self.store.insert(data['path'], contentsource,
- checksums=checksum_util.item_checksums(data),
- mutable=False, size=data.get('size'))
+ try:
+ self.store.insert(data['path'], contentsource,
+ checksums=checksum_util.item_checksums(data),
+ mutable=False, size=data.get('size'))
+ except checksum_util.InvalidChecksum as e:
+ with open("/tmp/errors.log", "a") as fp:
+ fp.write("%s\n" % e)
+ import sys
+ sys.stderr.write("%s\n" % e)
+
         self._inc_rc(data['path'], src, pedigree)

     def insert_index_entry(self, data, src, pedigree, contentsource):

$ url=http://cloud-images.ubuntu.com/daily/streams/v1/index.json
$ rm -Rf out.d
$ ./tools/tenv sstream-mirror --max=1 $url --progress out.d release=yakkety arch=amd64
...
cat /tmp/errors.log
Invalid sha256 Checksum at http://cloud-images.ubuntu.com/daily/server/yakkety/20170222.1/yakkety-server-cloudimg-amd64-lxd.tar.xz. Found fd9f97481a3d21f6cf017b5e8b199c7b5a9fbd3fe0896fa697edd44267b93036. Expected 522ea193e4414cc41baa578e82f4eba7b6c5e516049656ba8cdae84a4d10b0cb. read 848 bytes expected 840 bytes. (size 848 expected 840)
Invalid sha256 Checksum at http://cloud-images.ubuntu.com/daily/server/yakkety/20170222.1/yakkety-server-cloudimg-amd64.manifest. Found a7018e21f0b9119231d7c25cacb360b753d4d40e11bf6fdbda9398ea8e00fc60. Expected d6f2d40732308b2f0a95d2b36fec0d2899976f459536abedfeb5e2af48474326. read 14255 bytes expected 14255 bytes. (size 14255 expected 14255)
Invalid sha256 Checksum at http://cloud-images.ubuntu.com/daily/server/yakkety/20170222.1/yakkety-server-cloudimg-amd64.squashfs.manifest. Found 0bda9b9a517cb85dd818136d4cef13b998607fc555bc2f6e0ce0637950dddd15. Expected 955f530579667721260241d9c82df219ecb66817ea6aeba70515a5d5033ada92. read 13736 bytes expected 13736 bytes. (size 13736 expected 13736)
Invalid sha256 Checksum at http://cloud-images.ubuntu.com/daily/server/yakkety/20170222.1/yakkety-server-cloudimg-amd64.img. Found 9a209e74abceb899c73e678758401eed18832e90347ad81f56975525cd718224. Expected ea089b13a75cc6ad92aa6533796f912adf3fd8f860b0134752bade9b6644ccc8. read 342630400 bytes expected 342622208 bytes. (size 342630400 expected 342622208)
Invalid sha256 Checksum at http://cloud-images.ubuntu.com/daily/server/yakkety/20170222.1/yakkety-server-cloudimg-amd64.tar.gz. Found ebaecba0a4aba918637e7d5ab4861290fd513ec3113b7f2c6be19d2c82382aba. Expected 350f1aebe32a370c16078977e4ee1aa56a97e6c0c3498ced5c9ef8168a127468. read 266919813 bytes expected 266936375 bytes. (size 266919813 expected 266936375)
Invalid sha256 Checksum at http://cloud-images.ubuntu.com/daily/server/yakkety/20170222.1/yakkety-server-cloudimg-amd64.squashfs. Found 5f39a83a9ae0286a13ca405a59eacc47e8e27abe4806a192944c33945e883b24. Expected a96a84cefac3a3e2cba92cb80a8e49c0d4bf91d8141f3fa0612ee71f3bf2e3d1. read 163205120 bytes expected 163196928 bytes. (size 163205120 expected 163196928)
Invalid sha256 Checksum at http://cloud-images.ubuntu.com/daily/server/yakkety/20170222.1/yakkety-server-cloudimg-amd64.ova. Found 4eca9179cd629ca71256153164386215872b8056a90b23d736146ee6d61e8522. Expected d7fa2eb5596842650c50b06b8c1f3406dc52d809891f98e7bbacdc5fce3cf737. read 327761920 bytes expected 327761920 bytes. (size 327761920 expected 327761920)