Drush 8.1.10 not patching multiple patches for a project

[shrop]

When patching a project with more than one patch, the second patch consistently fails. I can switch the order and the second fails the same way. I am running Drush 8.1.10.

Here is the section from the drush make file:

; Field collection feeds
projects[field_collection_feeds][type] = module
projects[field_collection_feeds][subdir] = contrib
projects[field_collection_feeds][version] = 1.0-alpha3
projects[field_collection_feeds][patch][] = https://www.drupal.org/files/issues/field_collection_feeds-broken_references_on_delete-1992422-6.patch
projects[field_collection_feeds][patch][] = https://www.drupal.org/files/issues/FeedsUpdateIssue-1921128-12.patch

Here is an example where the second patch fails for me running drush -vvv:

Downloading field_collection_feeds-7.x-1.0-alpha3.tar.gz was successful.                                       [notice]
Md5 checksum of field_collection_feeds-7.x-1.0-alpha3.tar.gz verified.                                         [notice]
Project field_collection_feeds (7.x-1.0-alpha3) downloaded to                                               [success]
/private/tmp/make_tmp_1490058590_58d07d5e1f465/__build__/sites/all/modules/contrib/field_collection_feeds.
Command dispatch complete                                                                                      [notice]
field_collection_feeds-7.x-1.0-alpha3 downloaded.                                                           [ok]
/Users/shrop/.drush/cache/download/https---www.drupal.org-files-issues-field_collection_feeds-broken_references_on_delete-1992422-6.patch   [notice]
retrieved from cache.
Checking patch plugins/FeedsFieldCollectionProcessor.inc...                                                    [notice]
Applied patch plugins/FeedsFieldCollectionProcessor.inc cleanly.
field_collection_feeds patched with field_collection_feeds-broken_references_on_delete-1992422-6.patch.     [ok]
/Users/shrop/.drush/cache/download/https---www.drupal.org-files-issues-FeedsUpdateIssue-1921128-12.patch       [notice]
retrieved from cache.
can't find file to patch at input line 3                                                                       [notice]
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|--- a/plugins/FeedsFieldCollectionProcessor.inc
|+++ b/plugins/FeedsFieldCollectionProcessor.inc
--------------------------
File to patch:
Skip this patch? [y]
Skipping patch.
4 out of 4 hunks ignored
Unable to patch field_collection_feeds with FeedsUpdateIssue-1921128-12.patch.                              [error]

[shrop]

Turns out Drush is working just fine. The patches seem to have a conflict with each other.