diff --git a/CHANGES b/CHANGES
index fef9a2113..d5a67ac27 100644
--- a/CHANGES
+++ b/CHANGES
@@ -33,6 +33,12 @@ Bugs fixed
 * #5091: latex: curly braces in index entries are not handled correctly
 * #5070: epub: Wrong internal href fragment links
 * #5104: apidoc: Interface of ``sphinx.apidoc:main()`` has changed
+* #5076: napoleon raises RuntimeError with python 3.7
+* #5125: sphinx-build: Interface of ``sphinx:main()`` has changed
+* sphinx-build: ``sphinx.cmd.build.main()`` refers ``sys.argv`` instead of given
+  argument
+* #5146: autosummary: warning is emitted when the first line of docstring ends
+  with literal notation
 * autosummary: warnings of autosummary indicates wrong location (refs: #5146)
 
 Testing
diff --git a/sphinx/__init__.py b/sphinx/__init__.py
index c81166603..34bd365bc 100644
--- a/sphinx/__init__.py
+++ b/sphinx/__init__.py
@@ -60,15 +60,15 @@ if __version__.endswith('+'):
         pass
 
 
-def main(*args, **kwargs):
+def main(argv=sys.argv):
     from .cmd import build
     warnings.warn(
         '`sphinx.main()` has moved to `sphinx.cmd.build.main()`.',
         RemovedInSphinx20Warning,
         stacklevel=2,
     )
-    args = args[1:]  # skip first argument to adjust arguments (refs: #4615)
-    return build.main(*args, **kwargs)
+    argv = argv[1:]  # skip first argument to adjust arguments (refs: #4615)
+    return build.main(argv)
 
 
 def build_main(argv=sys.argv):
diff --git a/sphinx/cmd/build.py b/sphinx/cmd/build.py
index c0c31ae67..1add951ca 100644
--- a/sphinx/cmd/build.py
+++ b/sphinx/cmd/build.py
@@ -32,7 +32,7 @@ def make_main(argv=sys.argv[1:]):
 
 def main(argv=sys.argv[1:]):
     # type: (List[str]) -> int
-    if sys.argv[1:2] == ['-M']:
+    if argv[:1] == ['-M']:
         return make_main(argv)
     else:
         return build_main(argv)
diff --git a/sphinx/ext/autosummary/__init__.py b/sphinx/ext/autosummary/__init__.py
index 84ef340f7..c1c6a9fb0 100644
--- a/sphinx/ext/autosummary/__init__.py
+++ b/sphinx/ext/autosummary/__init__.py
@@ -91,6 +91,7 @@ logger = logging.getLogger(__name__)
 
 
 periods_re = re.compile(r'\.(?:\s+)')
+literal_re = re.compile(r'::\s*$')
 
 
 # -- autosummary_toc node ------------------------------------------------------
@@ -486,6 +487,9 @@ def extract_summary(doc, document):
                 # considered as that splitting by period does not break inline markups
                 break
 
+    # strip literal notation mark ``::`` from tail of summary
+    summary = literal_re.sub('.', summary)
+
     return summary
 
 
diff --git a/sphinx/ext/napoleon/docstring.py b/sphinx/ext/napoleon/docstring.py
index b349c761f..64107d8fb 100644
--- a/sphinx/ext/napoleon/docstring.py
+++ b/sphinx/ext/napoleon/docstring.py
@@ -527,7 +527,14 @@ class GoogleDocstring(UnicodeMixin):
         self._parsed_lines = self._consume_empty()
 
         if self._name and (self._what == 'attribute' or self._what == 'data'):
-            self._parsed_lines.extend(self._parse_attribute_docstring())
+            # Implicit stop using StopIteration no longer allowed in
+            # Python 3.7; see PEP 479
+            res = []  # type: List[unicode]
+            try:
+                res = self._parse_attribute_docstring()
+            except StopIteration:
+                pass
+            self._parsed_lines.extend(res)
             return
 
         while self._line_iter.has_next():
diff --git a/tests/test_ext_autosummary.py b/tests/test_ext_autosummary.py
index 1138fe4a6..fba0ae33c 100644
--- a/tests/test_ext_autosummary.py
+++ b/tests/test_ext_autosummary.py
@@ -81,6 +81,10 @@ def test_extract_summary(capsys):
     doc = ['Blabla, i.e. bla.']
     assert extract_summary(doc, document) == 'Blabla, i.e.'
 
+    # literal
+    doc = ['blah blah::']
+    assert extract_summary(doc, document) == 'blah blah.'
+
     _, err = capsys.readouterr()
     assert err == ''