Can't upgrade urllib3 until CacheControl does

Author: mr-c

requirements.txt

@@ -5,5 +5,6 @@ rdflib>= 4.2.2, < 6.0.0;python_version<='3.6'
 rdflib-jsonld>=0.4.0, <= 0.6.1;python_version<='3.6'
 mistune>=2.0.3,<2.1
 CacheControl[filecache]==0.12.11
+urllib3<2  # until there is a new CacheControl release containing a fix
 black<23.4
 mypy_extensions

schema_salad/tests/test_examples.py

@@ -52,6 +52,14 @@ def test_bad_schemas(caplog: pytest.LogCaptureFixture) -> None:
         "Could not load extension schema https://bad.example.com/missing.ttl: "
         "Error fetching https://bad.example.com/missing.ttl"
     ) in caplog.text
+    assert (
+        "https://schema.org/!DOCTYPE html does not look like a valid URI, "
+        "trying to serialize this will break"
+    ) in caplog.text
+    assert (
+        "Could not load extension schema https://schema.org/docs/schema_org_rdfa.html: "
+        "No plugin registered for (rdfa, <class 'rdflib.parser.Parser'>)"
+    ) in caplog.text
 
 
 def test_skip_bad_schemas(caplog: pytest.LogCaptureFixture) -> None:

setup.py

@@ -87,6 +87,7 @@
     "rdflib-jsonld>=0.4.0, <= 0.6.1;python_version<='3.6'",
     "mistune>=2.0.3,<2.1",
     "CacheControl[filecache] >= 0.11.7, < 0.13",
+    "urllib3<2",  # until CacheControl fixes their incompatability
     "mypy_extensions",
 ]