There were 2 warnings:

1) Test\Files\ViewTest::testRenameFailDeleteTargetKeepSource
Trying to configure method "writeStream" which cannot be configured because it does not exist, has not been specified, is final, or is static

2) Test\Files\ViewTest::testCopyFailDeleteTargetKeepSource
Trying to configure method "writeStream" which cannot be configured because it does not exist, has not been specified, is final, or is static

--

There was 1 failure:

1) OCA\Files_Sharing\Tests\SharedMountTest::testPermissionMovedGroupShare with data set #139 ('folder', 9, 23)
Failed asserting that false is true.

/drone/src/apps/files_sharing/tests/SharedMountTest.php:367