diff --git a/.gitignore b/.gitignore
index bcbae80..2a246a8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,5 +10,6 @@
 
 /*.egg-info
 /virtualenv
+/venv
 
 config.yaml
diff --git a/README.rst b/README.rst
index f2b9818..cf9e702 100644
--- a/README.rst
+++ b/README.rst
@@ -52,6 +52,15 @@ You can run only the boto3 tests with::
 
 This section contains some basic tests for the AssumeRole, GetSessionToken and AssumeRoleWithWebIdentity API's. The test file is located under ``s3tests_boto3/functional``.
 
+To run the STS tests, the vstart cluster should be started with the following parameter (in addition to any parameters already used with it)::
+
+        vstart.sh -o rgw_sts_key=abcdefghijklmnop -o rgw_s3_auth_use_sts=true
+
+Note that the ``rgw_sts_key`` can be set to anything that is 128 bits in length.
+After the cluster is up the following command should be executed::
+
+      radosgw-admin caps add --tenant=testx --uid="9876543210abcdef0123456789abcdef0123456789abcdef0123456789abcdef" --caps="roles=*"
+
 You can run only the sts tests (all the three API's) with::
 
         S3TEST_CONF=your.conf tox s3tests_boto3/functional/test_sts.py
diff --git a/requirements.txt b/requirements.txt
index ac1d18f..7742d8f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,3 +12,4 @@ pytz >=2011k
 httplib2
 lxml
 pytest
+tox
diff --git a/s3tests/functional/test_s3_website.py b/s3tests/functional/test_s3_website.py
index 8cc04ed..641cd71 100644
--- a/s3tests/functional/test_s3_website.py
+++ b/s3tests/functional/test_s3_website.py
@@ -1,5 +1,5 @@
 import sys
-import collections
+from collections.abc import Container
 import pytest
 import string
 import random
@@ -159,9 +159,9 @@ def _test_website_prep(bucket, xml_template, hardcoded_fields = {}, expect_fail=
     return f
 
 def __website_expected_reponse_status(res, status, reason):
-    if not isinstance(status, collections.Container):
+    if not isinstance(status, Container):
         status = set([status])
-    if not isinstance(reason, collections.Container):
+    if not isinstance(reason, Container):
         reason = set([reason])
 
     if status is not IGNORE_FIELD:
@@ -179,7 +179,7 @@ def _website_expected_default_html(**kwargs):
         v = kwargs[k]
         if isinstance(v, str):
             v = [v]
-        elif not isinstance(v, collections.Container):
+        elif not isinstance(v, Container):
             v = [v]
         for v2 in v:
             s = '<li>%s: %s</li>' % (k,v2)
@@ -199,7 +199,7 @@ def _website_expected_error_response(res, bucket_name, status, reason, code, con
         if code is not IGNORE_FIELD:
             assert errorcode == code
 
-    if not isinstance(content, collections.Container):
+    if not isinstance(content, Container):
         content = set([content])
     for f in content:
         if f is not IGNORE_FIELD and f is not None:
diff --git a/s3tests_boto3/functional/__init__.py b/s3tests_boto3/functional/__init__.py
index 22b136c..a65b54c 100644
--- a/s3tests_boto3/functional/__init__.py
+++ b/s3tests_boto3/functional/__init__.py
@@ -82,18 +82,13 @@ def get_objects_list(bucket, client=None, prefix=None):
 # generator function that returns object listings in batches, where each
 # batch is a list of dicts compatible with delete_objects()
 def list_versions(client, bucket, batch_size):
-    key_marker = ''
-    version_marker = ''
+    kwargs = {'Bucket': bucket, 'MaxKeys': batch_size}
     truncated = True
     while truncated:
-        listing = client.list_object_versions(
-                Bucket=bucket,
-                KeyMarker=key_marker,
-                VersionIdMarker=version_marker,
-                MaxKeys=batch_size)
+        listing = client.list_object_versions(**kwargs)
 
-        key_marker = listing.get('NextKeyMarker')
-        version_marker = listing.get('NextVersionIdMarker')
+        kwargs['KeyMarker'] = listing.get('NextKeyMarker')
+        kwargs['VersionIdMarker'] = listing.get('NextVersionIdMarker')
         truncated = listing['IsTruncated']
 
         objs = listing.get('Versions', []) + listing.get('DeleteMarkers', [])
diff --git a/s3tests_boto3/functional/test_iam.py b/s3tests_boto3/functional/test_iam.py
index 0995f97..fa44357 100644
--- a/s3tests_boto3/functional/test_iam.py
+++ b/s3tests_boto3/functional/test_iam.py
@@ -477,6 +477,7 @@ def test_allow_bucket_actions_in_user_policy():
 
 @pytest.mark.user_policy
 @pytest.mark.test_of_iam
+@pytest.mark.fails_on_dbstore
 def test_deny_bucket_actions_in_user_policy():
     client = get_iam_client()
     s3_client = get_alt_client()
@@ -551,6 +552,7 @@ def test_allow_object_actions_in_user_policy():
 
 @pytest.mark.user_policy
 @pytest.mark.test_of_iam
+@pytest.mark.fails_on_dbstore
 def test_deny_object_actions_in_user_policy():
     client = get_iam_client()
     s3_client_alt = get_alt_client()
@@ -625,6 +627,7 @@ def test_allow_multipart_actions_in_user_policy():
 
 @pytest.mark.user_policy
 @pytest.mark.test_of_iam
+@pytest.mark.fails_on_dbstore
 def test_deny_multipart_actions_in_user_policy():
     client = get_iam_client()
     s3_client = get_alt_client()
@@ -667,6 +670,7 @@ def test_deny_multipart_actions_in_user_policy():
 
 @pytest.mark.user_policy
 @pytest.mark.test_of_iam
+@pytest.mark.fails_on_dbstore
 def test_allow_tagging_actions_in_user_policy():
     client = get_iam_client()
     s3_client_alt = get_alt_client()
@@ -712,6 +716,7 @@ def test_allow_tagging_actions_in_user_policy():
 
 @pytest.mark.user_policy
 @pytest.mark.test_of_iam
+@pytest.mark.fails_on_dbstore
 def test_deny_tagging_actions_in_user_policy():
     client = get_iam_client()
     s3_client = get_alt_client()
@@ -763,6 +768,7 @@ def test_deny_tagging_actions_in_user_policy():
 
 @pytest.mark.user_policy
 @pytest.mark.test_of_iam
+@pytest.mark.fails_on_dbstore
 def test_verify_conflicting_user_policy_statements():
     s3client = get_alt_client()
     bucket = get_new_bucket(client=s3client)
@@ -794,6 +800,7 @@ def test_verify_conflicting_user_policy_statements():
 
 @pytest.mark.user_policy
 @pytest.mark.test_of_iam
+@pytest.mark.fails_on_dbstore
 def test_verify_conflicting_user_policies():
     s3client = get_alt_client()
     bucket = get_new_bucket(client=s3client)
diff --git a/s3tests_boto3/functional/test_s3.py b/s3tests_boto3/functional/test_s3.py
index e309c48..0d47f1c 100644
--- a/s3tests_boto3/functional/test_s3.py
+++ b/s3tests_boto3/functional/test_s3.py
@@ -1573,6 +1573,19 @@ def test_object_write_to_nonexist_bucket():
     assert error_code == 'NoSuchBucket'
 
 
+def _ev_add_te_header(request, **kwargs):
+    request.headers.add_header('Transfer-Encoding', 'chunked')
+
+def test_object_write_with_chunked_transfer_encoding():
+    bucket_name = get_new_bucket()
+    client = get_client()
+
+    client.meta.events.register_first('before-sign.*.*', _ev_add_te_header)
+    response = client.put_object(Bucket=bucket_name, Key='foo', Body='bar')
+
+    assert response['ResponseMetadata']['HTTPStatusCode'] == 200
+
+
 def test_bucket_create_delete():
     bucket_name = get_new_bucket()
     client = get_client()
@@ -1624,6 +1637,39 @@ def _make_objs_dict(key_names):
     objs_dict = {'Objects': objs_list}
     return objs_dict
 
+def test_versioning_concurrent_multi_object_delete():
+    num_objects = 5
+    num_threads = 5
+    bucket_name = get_new_bucket()
+
+    check_configure_versioning_retry(bucket_name, "Enabled", "Enabled")
+
+    key_names = ["key_{:d}".format(x) for x in range(num_objects)]
+    bucket = _create_objects(bucket_name=bucket_name, keys=key_names)
+
+    client = get_client()
+    versions = client.list_object_versions(Bucket=bucket_name)['Versions']
+    assert len(versions) == num_objects
+    objs_dict = {'Objects': [dict((k, v[k]) for k in ["Key", "VersionId"]) for v in versions]}
+    results = [None] * num_threads
+
+    def do_request(n):
+        results[n] = client.delete_objects(Bucket=bucket_name, Delete=objs_dict)
+
+    t = []
+    for i in range(num_threads):
+        thr = threading.Thread(target = do_request, args=[i])
+        thr.start()
+        t.append(thr)
+    _do_wait_completion(t)
+
+    for response in results:
+        assert len(response['Deleted']) == num_objects
+        assert 'Errors' not in response
+
+    response = client.list_objects(Bucket=bucket_name)
+    assert 'Contents' not in response
+
 def test_multi_object_delete():
     key_names = ['key0', 'key1', 'key2']
     bucket_name = _create_objects(keys=key_names)
@@ -2818,6 +2864,53 @@ def test_post_object_upload_size_below_minimum():
     r = requests.post(url, files=payload, verify=get_config_ssl_verify())
     assert r.status_code == 400
 
+def test_post_object_upload_size_rgw_chunk_size_bug():
+    # Test for https://tracker.ceph.com/issues/58627
+    # TODO: if this value is different in Teuthology runs, this would need tuning
+    # https://github.com/ceph/ceph/blob/main/qa/suites/rgw/verify/striping%24/stripe-greater-than-chunk.yaml
+    _rgw_max_chunk_size = 4 * 2**20 # 4MiB
+    min_size = _rgw_max_chunk_size
+    max_size = _rgw_max_chunk_size * 3
+    # [(chunk),(small)]
+    test_payload_size = _rgw_max_chunk_size + 200 # extra bit to push it over the chunk boundary
+    # it should be valid when we run this test!
+    assert test_payload_size > min_size
+    assert test_payload_size < max_size
+
+    bucket_name = get_new_bucket()
+    client = get_client()
+
+    url = _get_post_url(bucket_name)
+    utc = pytz.utc
+    expires = datetime.datetime.now(utc) + datetime.timedelta(seconds=+6000)
+
+    policy_document = {"expiration": expires.strftime("%Y-%m-%dT%H:%M:%SZ"),\
+    "conditions": [\
+    {"bucket": bucket_name},\
+    ["starts-with", "$key", "foo"],\
+    {"acl": "private"},\
+    ["starts-with", "$Content-Type", "text/plain"],\
+    ["content-length-range", min_size, max_size],\
+    ]\
+    }
+
+    test_payload = 'x' * test_payload_size
+
+    json_policy_document = json.JSONEncoder().encode(policy_document)
+    bytes_json_policy_document = bytes(json_policy_document, 'utf-8')
+    policy = base64.b64encode(bytes_json_policy_document)
+    aws_secret_access_key = get_main_aws_secret_key()
+    aws_access_key_id = get_main_aws_access_key()
+
+    signature = base64.b64encode(hmac.new(bytes(aws_secret_access_key, 'utf-8'), policy, hashlib.sha1).digest())
+
+    payload = OrderedDict([ ("key" , "foo.txt"),("AWSAccessKeyId" , aws_access_key_id),\
+    ("acl" , "private"),("signature" , signature),("policy" , policy),\
+    ("Content-Type" , "text/plain"),('file', (test_payload))])
+
+    r = requests.post(url, files=payload, verify=get_config_ssl_verify())
+    assert r.status_code == 204
+
 def test_post_object_empty_conditions():
     bucket_name = get_new_bucket()
     client = get_client()
@@ -7412,20 +7505,17 @@ def test_versioning_multi_object_delete():
     num_versions = 2
 
     (version_ids, contents) = create_multiple_versions(client, bucket_name, key, num_versions)
+    assert len(version_ids) == 2
 
-    response = client.list_object_versions(Bucket=bucket_name)
-    versions = response['Versions']
-    versions.reverse()
-
-    for version in versions:
-        client.delete_object(Bucket=bucket_name, Key=key, VersionId=version['VersionId'])
+    # delete both versions
+    objects = [{'Key': key, 'VersionId': v} for v in version_ids]
+    client.delete_objects(Bucket=bucket_name, Delete={'Objects': objects})
 
     response = client.list_object_versions(Bucket=bucket_name)
     assert not 'Versions' in response
 
     # now remove again, should all succeed due to idempotency
-    for version in versions:
-        client.delete_object(Bucket=bucket_name, Key=key, VersionId=version['VersionId'])
+    client.delete_objects(Bucket=bucket_name, Delete={'Objects': objects})
 
     response = client.list_object_versions(Bucket=bucket_name)
     assert not 'Versions' in response
@@ -7440,33 +7530,24 @@ def test_versioning_multi_object_delete_with_marker():
     num_versions = 2
 
     (version_ids, contents) = create_multiple_versions(client, bucket_name, key, num_versions)
+    assert len(version_ids) == num_versions
+    objects = [{'Key': key, 'VersionId': v} for v in version_ids]
 
-    client.delete_object(Bucket=bucket_name, Key=key)
-    response = client.list_object_versions(Bucket=bucket_name)
-    versions = response['Versions']
-    delete_markers = response['DeleteMarkers']
+    # create a delete marker
+    response = client.delete_object(Bucket=bucket_name, Key=key)
+    assert response['DeleteMarker']
+    objects += [{'Key': key, 'VersionId': response['VersionId']}]
 
-    version_ids.append(delete_markers[0]['VersionId'])
-    assert len(version_ids) == 3
-    assert len(delete_markers) == 1
-
-    for version in versions:
-        client.delete_object(Bucket=bucket_name, Key=key, VersionId=version['VersionId'])
-
-    for delete_marker in delete_markers:
-        client.delete_object(Bucket=bucket_name, Key=key, VersionId=delete_marker['VersionId'])
+    # delete all versions
+    client.delete_objects(Bucket=bucket_name, Delete={'Objects': objects})
 
     response = client.list_object_versions(Bucket=bucket_name)
     assert not 'Versions' in response
     assert not 'DeleteMarkers' in response
 
-    for version in versions:
-        client.delete_object(Bucket=bucket_name, Key=key, VersionId=version['VersionId'])
-
-    for delete_marker in delete_markers:
-        client.delete_object(Bucket=bucket_name, Key=key, VersionId=delete_marker['VersionId'])
-
     # now remove again, should all succeed due to idempotency
+    client.delete_objects(Bucket=bucket_name, Delete={'Objects': objects})
+
     response = client.list_object_versions(Bucket=bucket_name)
     assert not 'Versions' in response
     assert not 'DeleteMarkers' in response
@@ -7480,8 +7561,11 @@ def test_versioning_multi_object_delete_with_marker_create():
 
     key = 'key'
 
-    response = client.delete_object(Bucket=bucket_name, Key=key)
-    delete_marker_version_id = response['VersionId']
+    # use delete_objects() to create a delete marker
+    response = client.delete_objects(Bucket=bucket_name, Delete={'Objects': [{'Key': key}]})
+    assert len(response['Deleted']) == 1
+    assert response['Deleted'][0]['DeleteMarker']
+    delete_marker_version_id = response['Deleted'][0]['DeleteMarkerVersionId']
 
     response = client.list_object_versions(Bucket=bucket_name)
     delete_markers = response['DeleteMarkers']
@@ -8299,10 +8383,11 @@ def test_lifecycle_expiration_header_tags_head():
     # stat the object, check header
     response = client.head_object(Bucket=bucket_name, Key=key1)
     assert response['ResponseMetadata']['HTTPStatusCode'] == 200
-    assert check_lifecycle_expiration_header(response, datetime.datetime.now(None), 'rule1', 1)
+    assert check_lifecycle_expiration_header(response, datetime.datetime.now(None), 'rule1', 1) == False
 
 @pytest.mark.lifecycle
 @pytest.mark.lifecycle_expiration
+@pytest.mark.fails_on_dbstore
 def test_lifecycle_expiration_header_and_tags_head():
     now = datetime.datetime.now(None)
     bucket_name = get_new_bucket()
@@ -8344,7 +8429,7 @@ def test_lifecycle_expiration_header_and_tags_head():
     # stat the object, check header
     response = client.head_object(Bucket=bucket_name, Key=key1)
     assert response['ResponseMetadata']['HTTPStatusCode'] == 200
-    assert check_lifecycle_expiration_header(response, datetime.datetime.now(None), 'rule1', 1)
+    assert check_lifecycle_expiration_header(response, datetime.datetime.now(None), 'rule1', 1) == False
 
 @pytest.mark.lifecycle
 def test_lifecycle_set_noncurrent():
@@ -12594,6 +12679,7 @@ def test_sse_s3_default_multipart_upload():
 
     assert response['Metadata'] == metadata
     assert response['ResponseMetadata']['HTTPHeaders']['content-type'] == content_type
+    assert response['ResponseMetadata']['HTTPHeaders']['x-amz-server-side-encryption'] == 'AES256'
 
     body = _get_body(response)
     assert body == data
@@ -12738,3 +12824,24 @@ def test_sse_s3_encrypted_upload_1mb():
 @pytest.mark.fails_on_dbstore
 def test_sse_s3_encrypted_upload_8mb():
     _test_sse_s3_encrypted_upload(8*1024*1024)
+
+def test_get_object_torrent():
+    client = get_client()
+    bucket_name = get_new_bucket()
+    key = 'Avatar.mpg'
+
+    file_size = 7 * 1024 * 1024
+    data = 'A' * file_size
+
+    client.put_object(Bucket=bucket_name, Key=key, Body=data)
+
+    response = None
+    try:
+        response = client.get_object_torrent(Bucket=bucket_name, Key=key)
+        # if successful, verify the torrent contents are different from the body
+        assert data != _get_body(response)
+    except ClientError as e:
+        # accept 404 errors - torrent support may not be configured
+        status, error_code = _get_status_and_error_code(e.response)
+        assert status == 404
+        assert error_code == 'NoSuchKey'
diff --git a/s3tests_boto3/functional/test_s3select.py b/s3tests_boto3/functional/test_s3select.py
index 5c18073..1ce4fa3 100644
--- a/s3tests_boto3/functional/test_s3select.py
+++ b/s3tests_boto3/functional/test_s3select.py
@@ -403,6 +403,7 @@ def test_count_operation():
 def test_count_json_operation():
     json_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     num_of_rows = 1
     obj_to_load = create_random_json_object(num_of_rows,10)
     upload_object(bucket_name,json_obj_name,obj_to_load)
@@ -425,6 +426,7 @@ def test_json_column_sum_min_max():
 
     json_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,json_obj_name,json_obj)
     
     json_obj_name_2 = get_random_string()
@@ -491,6 +493,7 @@ def test_json_nullif_expressions():
 
     json_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,json_obj_name,json_obj)
 
     res_s3select_nullif = remove_xml_tags_from_result(  run_s3select_json(bucket_name,json_obj_name,"select count(0) from s3object[*].root where nullif(_1.c1,_1.c2) is null ;")  ).replace("\n","")
@@ -530,6 +533,7 @@ def test_column_sum_min_max():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+    
     upload_object(bucket_name,csv_obj_name,csv_obj)
     
     csv_obj_name_2 = get_random_string()
@@ -596,6 +600,7 @@ def test_nullif_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_nullif = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,"select count(0) from s3object where nullif(_1,_2) is null ;")  ).replace("\n","")
@@ -651,6 +656,7 @@ def test_nulliftrue_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_nullif = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,"select count(0) from s3object where (nullif(_1,_2) is null) = true ;")  ).replace("\n","")
@@ -678,6 +684,7 @@ def test_is_not_null_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_null = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,"select count(*) from s3object where nullif(_1,_2) is not null ;")  ).replace("\n","")
@@ -699,6 +706,7 @@ def test_lowerupper_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,'select lower("AB12cd$$") from s3object ;')  ).replace("\n","")
@@ -717,6 +725,7 @@ def test_in_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_in = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,'select int(_1) from s3object where int(_1) in(1);')).replace("\n","")
@@ -786,6 +795,7 @@ def test_true_false_in_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_in = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,'select int(_1) from s3object where (int(_1) in(1)) = true;')).replace("\n","")
@@ -831,6 +841,7 @@ def test_like_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_like = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,'select count(*) from s3object where _1 like "%aeio%";')).replace("\n","")
@@ -918,6 +929,7 @@ def test_truefalselike_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_like = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,'select count(*) from s3object where (_1 like "%aeio%") = true;')).replace("\n","")
@@ -963,6 +975,7 @@ def test_nullif_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_nullif = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,"select count(0) from stdin where nullif(_1,_2) is null ;")  ).replace("\n","")
@@ -990,6 +1003,7 @@ def test_lowerupper_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,'select lower("AB12cd$$") from stdin ;')  ).replace("\n","")
@@ -1008,6 +1022,7 @@ def test_in_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_in = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,'select int(_1) from stdin where int(_1) in(1);')).replace("\n","")
@@ -1047,6 +1062,7 @@ def test_like_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_in = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,'select count(*) from stdin where _1 like "%aeio%";')).replace("\n","")
@@ -1094,6 +1110,7 @@ def test_complex_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,"select min(int(_1)),max(int(_2)),min(int(_3))+1 from s3object;")).replace("\n","")
@@ -1130,6 +1147,7 @@ def test_alias():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_alias = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,"select int(_1) as a1, int(_2) as a2 , (a1+a2) as a3 from s3object where a3>100 and a3<300;")  ).replace(",","")
@@ -1149,6 +1167,7 @@ def test_alias_cyclic_refernce():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_alias = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,"select int(_1) as a1,int(_2) as a2, a1+a4 as a3, a5+a1 as a4, int(_3)+a3 as a5 from s3object;")  )
@@ -1334,6 +1353,7 @@ def test_when_then_else_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,'select case when cast(_1 as int)>100 and cast(_1 as int)<200 then "(100-200)" when cast(_1 as int)>200 and cast(_1 as int)<300 then "(200-300)" else "NONE" end from s3object;')  ).replace("\n","")
@@ -1363,6 +1383,7 @@ def test_coalesce_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,'select count(*) from s3object where char_length(_3)>2 and char_length(_4)>2 and cast(substring(_3,1,2) as int) = cast(substring(_4,1,2) as int);')  ).replace("\n","")  
@@ -1385,6 +1406,7 @@ def test_cast_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,'select count(*) from s3object where cast(_3 as int)>999;')  ).replace("\n","")  
@@ -1424,6 +1446,7 @@ def test_trim_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_trim = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,'select count(*) from s3object where trim(_1) = "aeiou";')).replace("\n","")
@@ -1463,6 +1486,7 @@ def test_truefalse_trim_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_trim = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,'select count(*) from s3object where trim(_1) = "aeiou" = true;')).replace("\n","")
@@ -1502,6 +1526,7 @@ def test_escape_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_escape = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,'select count(*) from s3object where _1 like "%_ar" escape "%";')).replace("\n","")
@@ -1523,6 +1548,7 @@ def test_case_value_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_case = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,'select case cast(_1 as int) when cast(_2 as int) then "case_1_1" else "case_2_2" end from s3object;')).replace("\n","")
@@ -1538,6 +1564,7 @@ def test_bool_cast_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_cast = remove_xml_tags_from_result(  run_s3select(bucket_name,csv_obj_name,'select count(*) from s3object where cast(int(_1) as bool) = true ;')).replace("\n","")
@@ -1553,6 +1580,7 @@ def test_progress_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     obj_size = len(csv_obj.encode('utf-8'))
@@ -1586,6 +1614,7 @@ def test_output_serial_expressions():
 
     csv_obj_name = get_random_string()
     bucket_name = get_new_bucket_name()
+
     upload_object(bucket_name,csv_obj_name,csv_obj)
 
     res_s3select_1 = remove_xml_tags_from_result(  run_s3select_output(bucket_name,csv_obj_name,"select _1, _2 from s3object where nullif(_1,_2) is null ;", "ALWAYS")  ).replace("\n",",").replace(",","")
diff --git a/s3tests_boto3/functional/test_sts.py b/s3tests_boto3/functional/test_sts.py
index 0229dbd..8969167 100644
--- a/s3tests_boto3/functional/test_sts.py
+++ b/s3tests_boto3/functional/test_sts.py
@@ -56,6 +56,7 @@ log = logging.getLogger(__name__)
 
 def create_role(iam_client,path,rolename,policy_document,description,sessionduration,permissionboundary,tag_list=None):
     role_err=None
+    role_response = None
     if rolename is None:
         rolename=get_parameter_name()
     if tag_list is None:
@@ -68,6 +69,7 @@ def create_role(iam_client,path,rolename,policy_document,description,sessiondura
 
 def put_role_policy(iam_client,rolename,policyname,role_policy):
     role_err=None
+    role_response = None
     if policyname is None:
         policyname=get_parameter_name() 
     try:
@@ -78,6 +80,7 @@ def put_role_policy(iam_client,rolename,policyname,role_policy):
 
 def put_user_policy(iam_client,username,policyname,policy_document):
     role_err=None
+    role_response = None
     if policyname is None:
         policyname=get_parameter_name()
     try:
@@ -222,11 +225,17 @@ def test_assume_role_allow():
     
     policy_document = "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"arn:aws:iam:::user/"+sts_user_id+"\"]},\"Action\":[\"sts:AssumeRole\"]}]}"
     (role_error,role_response,general_role_name)=create_role(iam_client,'/',None,policy_document,None,None,None)
-    assert role_response['Role']['Arn'] == 'arn:aws:iam:::role/'+general_role_name+''
+    if role_response:
+        assert role_response['Role']['Arn'] == 'arn:aws:iam:::role/'+general_role_name+''
+    else:
+        assert False, role_error
     
     role_policy = "{\"Version\":\"2012-10-17\",\"Statement\":{\"Effect\":\"Allow\",\"Action\":\"s3:*\",\"Resource\":\"arn:aws:s3:::*\"}}"
     (role_err,response)=put_role_policy(iam_client,general_role_name,None,role_policy)
-    assert response['ResponseMetadata']['HTTPStatusCode'] == 200
+    if response:
+        assert response['ResponseMetadata']['HTTPStatusCode'] == 200
+    else:
+        assert False, role_err
     
     resp=sts_client.assume_role(RoleArn=role_response['Role']['Arn'],RoleSessionName=role_session_name)
     assert resp['ResponseMetadata']['HTTPStatusCode'] == 200
@@ -256,11 +265,17 @@ def test_assume_role_deny():
     
     policy_document = "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"arn:aws:iam:::user/"+sts_user_id+"\"]},\"Action\":[\"sts:AssumeRole\"]}]}"
     (role_error,role_response,general_role_name)=create_role(iam_client,'/',None,policy_document,None,None,None)
-    assert role_response['Role']['Arn'] == 'arn:aws:iam:::role/'+general_role_name+''
+    if role_response:
+        assert role_response['Role']['Arn'] == 'arn:aws:iam:::role/'+general_role_name+''
+    else:
+        assert False, role_error
     
     role_policy = "{\"Version\":\"2012-10-17\",\"Statement\":{\"Effect\":\"Deny\",\"Action\":\"s3:*\",\"Resource\":\"arn:aws:s3:::*\"}}"
     (role_err,response)=put_role_policy(iam_client,general_role_name,None,role_policy)
-    assert response['ResponseMetadata']['HTTPStatusCode'] == 200
+    if response:
+        assert response['ResponseMetadata']['HTTPStatusCode'] == 200
+    else:
+        assert False, role_err
     
     resp=sts_client.assume_role(RoleArn=role_response['Role']['Arn'],RoleSessionName=role_session_name)
     assert resp['ResponseMetadata']['HTTPStatusCode'] == 200
@@ -290,11 +305,17 @@ def test_assume_role_creds_expiry():
     
     policy_document = "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"arn:aws:iam:::user/"+sts_user_id+"\"]},\"Action\":[\"sts:AssumeRole\"]}]}"
     (role_error,role_response,general_role_name)=create_role(iam_client,'/',None,policy_document,None,None,None)
-    assert role_response['Role']['Arn'] == 'arn:aws:iam:::role/'+general_role_name+''
+    if role_response:
+        assert role_response['Role']['Arn'] == 'arn:aws:iam:::role/'+general_role_name+''
+    else:
+        assert False, role_error
     
     role_policy = "{\"Version\":\"2012-10-17\",\"Statement\":{\"Effect\":\"Allow\",\"Action\":\"s3:*\",\"Resource\":\"arn:aws:s3:::*\"}}"
     (role_err,response)=put_role_policy(iam_client,general_role_name,None,role_policy)
-    assert response['ResponseMetadata']['HTTPStatusCode'] == 200
+    if response:
+        assert response['ResponseMetadata']['HTTPStatusCode'] == 200
+    else:
+        assert False, role_err
     
     resp=sts_client.assume_role(RoleArn=role_response['Role']['Arn'],RoleSessionName=role_session_name,DurationSeconds=900)
     assert resp['ResponseMetadata']['HTTPStatusCode'] == 200
@@ -329,12 +350,18 @@ def test_assume_role_deny_head_nonexistent():
 
     policy_document = '{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Principal":{"AWS":["arn:aws:iam:::user/'+sts_user_id+'"]},"Action":["sts:AssumeRole"]}]}'
     (role_error,role_response,general_role_name)=create_role(iam_client,'/',None,policy_document,None,None,None)
-    assert role_response['Role']['Arn'] == 'arn:aws:iam:::role/'+general_role_name
+    if role_response:
+        assert role_response['Role']['Arn'] == 'arn:aws:iam:::role/'+general_role_name
+    else:
+        assert False, role_error
 
     # allow GetObject but deny ListBucket
     role_policy = '{"Version":"2012-10-17","Statement":{"Effect":"Allow","Action":"s3:GetObject","Principal":"*","Resource":"arn:aws:s3:::*"}}'
     (role_err,response)=put_role_policy(iam_client,general_role_name,None,role_policy)
-    assert response['ResponseMetadata']['HTTPStatusCode'] == 200
+    if response:
+        assert response['ResponseMetadata']['HTTPStatusCode'] == 200
+    else:
+        assert False, role_err
 
     resp=sts_client.assume_role(RoleArn=role_response['Role']['Arn'],RoleSessionName=role_session_name)
     assert resp['ResponseMetadata']['HTTPStatusCode'] == 200
@@ -367,12 +394,18 @@ def test_assume_role_allow_head_nonexistent():
 
     policy_document = '{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Principal":{"AWS":["arn:aws:iam:::user/'+sts_user_id+'"]},"Action":["sts:AssumeRole"]}]}'
     (role_error,role_response,general_role_name)=create_role(iam_client,'/',None,policy_document,None,None,None)
-    assert role_response['Role']['Arn'] == 'arn:aws:iam:::role/'+general_role_name
+    if role_response:
+        assert role_response['Role']['Arn'] == 'arn:aws:iam:::role/'+general_role_name
+    else:
+        assert False, role_error
 
     # allow GetObject and ListBucket
     role_policy = '{"Version":"2012-10-17","Statement":{"Effect":"Allow","Action":["s3:GetObject","s3:ListBucket"],"Principal":"*","Resource":"arn:aws:s3:::*"}}'
     (role_err,response)=put_role_policy(iam_client,general_role_name,None,role_policy)
-    assert response['ResponseMetadata']['HTTPStatusCode'] == 200
+    if response:
+        assert response['ResponseMetadata']['HTTPStatusCode'] == 200
+    else:
+        assert False, role_err
 
     resp=sts_client.assume_role(RoleArn=role_response['Role']['Arn'],RoleSessionName=role_session_name)
     assert resp['ResponseMetadata']['HTTPStatusCode'] == 200
@@ -418,7 +451,10 @@ def test_assume_role_with_web_identity():
     
     role_policy = "{\"Version\":\"2012-10-17\",\"Statement\":{\"Effect\":\"Allow\",\"Action\":\"s3:*\",\"Resource\":\"arn:aws:s3:::*\"}}"
     (role_err,response)=put_role_policy(iam_client,general_role_name,None,role_policy)
-    assert response['ResponseMetadata']['HTTPStatusCode'] == 200
+    if response:
+        assert response['ResponseMetadata']['HTTPStatusCode'] == 200
+    else:
+        assert False, role_err
     
     resp=sts_client.assume_role_with_web_identity(RoleArn=role_response['Role']['Arn'],RoleSessionName=role_session_name,WebIdentityToken=token)
     assert resp['ResponseMetadata']['HTTPStatusCode'] == 200
diff --git a/tox.ini b/tox.ini
index 93fde38..e4a30e5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,5 +3,7 @@ envlist = py
 
 [testenv]
 deps = -rrequirements.txt
-passenv = S3TEST_CONF S3_USE_SIGV4
+passenv =
+  S3TEST_CONF
+  S3_USE_SIGV4
 commands = pytest {posargs}