diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index bbc888ac0..ef4277174 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -67,9 +67,7 @@ jobs:
 
       - name: Run pytest
         run: |
-          python -m pytest -vv tests \
-            --reruns 3 --reruns-delay 30 \
-            --only-rerun requests.exceptions.HTTPError
+          python -m pytest -vv tests --reruns 3 --reruns-delay 30 --only-rerun "(?i)http|timeout"
 
   vanilla-build:
     strategy:
@@ -93,4 +91,4 @@ jobs:
 
       - name: Run pytest
         run: |
-          python -m pytest -vv tests --reruns 3 --reruns-delay 30 --only-rerun requests.exceptions.HTTPError
+          python -m pytest -vv tests --reruns 3 --reruns-delay 30 --only-rerun "(?i)http|timeout"
diff --git a/src/uproot/source/chunk.py b/src/uproot/source/chunk.py
index 9a268f63a..4d22a94ae 100644
--- a/src/uproot/source/chunk.py
+++ b/src/uproot/source/chunk.py
@@ -30,6 +30,9 @@ class Resource:
     :doc:`uproot.source.futures.ResourceFuture`.
     """
 
+    def __init__(self):
+        self._file_path = None
+
     @property
     def file_path(self) -> str:
         """
@@ -49,6 +52,14 @@ class Source:
     the file.
     """
 
+    def __init__(self):
+        self._num_requested_bytes = 0
+        self._num_requests = 0
+        self._num_requested_chunks = 0
+        self._file_path = None
+        self._num_bytes = None
+        self._executor = None
+
     def chunk(self, start: int, stop: int) -> Chunk:
         """
         Args:
@@ -139,6 +150,9 @@ def closed(self) -> bool:
         True if the associated file/connection/thread pool is closed; False
         otherwise.
         """
+        if self._executor is None:
+            return True
+
         return self._executor.closed
 
 
diff --git a/src/uproot/source/fsspec.py b/src/uproot/source/fsspec.py
index 2b9ba1d49..2cb874575 100644
--- a/src/uproot/source/fsspec.py
+++ b/src/uproot/source/fsspec.py
@@ -26,10 +26,12 @@ class FSSpecSource(uproot.source.chunk.Source):
     def __init__(self, file_path: str, **options):
         import fsspec.core
 
-        default_options = uproot.reading.open.defaults
-
-        exclude_keys = set(default_options.keys())
-        storage_options = {k: v for k, v in options.items() if k not in exclude_keys}
+        options = dict(uproot.reading.open.defaults, **options)
+        storage_options = {
+            k: v
+            for k, v in options.items()
+            if k not in uproot.reading.open.defaults.keys()
+        }
 
         self._executor = FSSpecLoopExecutor()
 
diff --git a/src/uproot/source/futures.py b/src/uproot/source/futures.py
index dfed35200..20673a293 100644
--- a/src/uproot/source/futures.py
+++ b/src/uproot/source/futures.py
@@ -453,9 +453,7 @@ def submit(self, future: ResourceFuture) -> ResourceFuture:
         """
         assert isinstance(future, ResourceFuture)
         if self.closed:
-            raise OSError(
-                f"resource is closed for file {self._workers[0].resource.file_path}"
-            )
+            raise OSError(f"resource is closed for file {self._resource.file_path}")
         future._run(self._resource)
         return future
 
diff --git a/src/uproot/source/http.py b/src/uproot/source/http.py
index 02e42ee95..b433f4efd 100644
--- a/src/uproot/source/http.py
+++ b/src/uproot/source/http.py
@@ -106,7 +106,7 @@ def get_num_bytes(file_path: str, parsed_url: urllib.parse.ParseResult, timeout)
                 response = connection.getresponse()
                 break
         else:
-            raise OSError(
+            raise http.client.HTTPException(
                 """remote server responded with status {} (redirect) without a 'location'
 for URL {}""".format(
                     response.status, file_path
@@ -119,7 +119,7 @@ def get_num_bytes(file_path: str, parsed_url: urllib.parse.ParseResult, timeout)
 
     if response.status != 200:
         connection.close()
-        raise OSError(
+        raise http.client.HTTPException(
             """HTTP response was {}, rather than 200, in attempt to get file size
 in file {}""".format(
                 response.status, file_path
@@ -132,7 +132,7 @@ def get_num_bytes(file_path: str, parsed_url: urllib.parse.ParseResult, timeout)
             return int(x)
     else:
         connection.close()
-        raise OSError(
+        raise http.client.HTTPException(
             """response headers did not include content-length: {}
 in file {}""".format(
                 dict(response.getheaders()), file_path
@@ -216,7 +216,7 @@ def get(self, connection, start: int, stop: int) -> bytes:
                     )
                     return self.get(redirect, start, stop)
 
-            raise OSError(
+            raise http.client.HTTPException(
                 """remote server responded with status {} (redirect) without a 'location'
 for URL {}""".format(
                     response.status, self._file_path
@@ -225,7 +225,7 @@ def get(self, connection, start: int, stop: int) -> bytes:
 
         if response.status != 206:
             connection.close()
-            raise OSError(
+            raise http.client.HTTPException(
                 """remote server responded with status {}, rather than 206 (range requests)
 for URL {}""".format(
                     response.status, self._file_path
@@ -322,7 +322,7 @@ def task(resource):
                             task(resource)
                             return
 
-                    raise OSError(
+                    raise http.client.HTTPException(
                         """remote server responded with status {} (redirect) without a 'location'
 for URL {}""".format(
                             response.status, source.file_path
@@ -428,7 +428,7 @@ def handle_multipart(
             data = response_buffer.read(length)
 
             if len(data) != length:
-                raise OSError(
+                raise http.client.HTTPException(
                     """wrong chunk length {} (expected {}) for byte range {} "
                     "in HTTP multipart
 for URL {}""".format(
@@ -454,7 +454,7 @@ def handle_multipart(
                     else:
                         range_string = range_string.decode("utf-8", "surrogateescape")
                         expecting = ", ".join(f"{a}-{b - 1}" for a, b in futures)
-                        raise OSError(
+                        raise http.client.HTTPException(
                             """unrecognized byte range in headers of HTTP multipart: {}
 
     expecting: {}
diff --git a/src/uproot/source/xrootd.py b/src/uproot/source/xrootd.py
index 0571b6713..987fada94 100644
--- a/src/uproot/source/xrootd.py
+++ b/src/uproot/source/xrootd.py
@@ -63,7 +63,10 @@ def get_server_config(file):
         XRootD_client.flags.QueryCode.CONFIG, "readv_iov_max readv_ior_max"
     )
     if status.error:
-        raise OSError(status.message)
+        if status.code in (206,):
+            raise TimeoutError(status.message)
+        else:
+            raise OSError(status.message)
 
     # Result is something like b'178956968\n2097136\n'
     readv_iov_max, readv_ior_max = map(int, result.split(b"\n", 1))
@@ -121,12 +124,12 @@ def _xrd_error(self, status):
         # https://github.com/xrootd/xrootd/blob/250eced4d3787c2ac5be2c8c922134153bbf7f08/src/XrdCl/XrdClStatus.cc#L34-L74
         if status.code in (101, 304, 400):
             raise uproot._util._file_not_found(self._file_path, status.message)
-
-        else:
-            raise OSError(
-                f"""XRootD error: {status.message}
-in file {self._file_path}"""
+        elif status.code in (206,):
+            raise TimeoutError(
+                f"XRootD error: {status.message} in file {self._file_path}"
             )
+        else:
+            raise OSError(f"XRootD error: {status.message} in file {self._file_path}")
 
     @property
     def timeout(self) -> float | None:
@@ -266,6 +269,8 @@ class XRootDSource(uproot.source.chunk.Source):
     ResourceClass = XRootDResource
 
     def __init__(self, file_path: str, **options):
+        options = dict(uproot.reading.open.defaults, **options)
+
         self._timeout = options["timeout"]
         self._desired_max_num_elements = options["max_num_elements"]
         self._use_threads = options["use_threads"]
@@ -285,7 +290,7 @@ def _open(self):
         # futures that wait for chunks that have been split to merge them.
         if self._use_threads:
             self._executor = uproot.source.futures.ResourceThreadPoolExecutor(
-                [trivial_resource() for x in range(self._num_workers)]
+                [trivial_resource() for _ in range(self._num_workers)]
             )
         else:
             self._executor = uproot.source.futures.ResourceTrivialExecutor(
@@ -458,6 +463,8 @@ class MultithreadedXRootDSource(uproot.source.chunk.MultithreadedSource):
     ResourceClass = XRootDResource
 
     def __init__(self, file_path: str, **options):
+        options = dict(uproot.reading.open.defaults, **options)
+
         self._num_workers = options["num_workers"]
         self._timeout = options["timeout"]
         self._use_threads = options["use_threads"]
@@ -501,5 +508,9 @@ def timeout(self) -> float | None:
     @property
     def num_bytes(self) -> int:
         if self._num_bytes is None:
-            self._num_bytes = self._executor.workers[0].resource.num_bytes
+            if hasattr(self._executor, "workers"):
+                self._num_bytes = self._executor.workers[0].resource.num_bytes
+            else:
+                self._num_bytes = self._executor._resource.num_bytes
+
         return self._num_bytes
diff --git a/tests/test_0001_source_class.py b/tests/test_0001_source_class.py
index 4c97d95bd..2ca6d98a7 100644
--- a/tests/test_0001_source_class.py
+++ b/tests/test_0001_source_class.py
@@ -299,9 +299,6 @@ def test_fallback(server, use_threads, num_workers):
         assert one[:4] == b"root"
 
 
-@pytest.mark.skip(
-    reason="RECHECK: Run2012B_DoubleMuParked.root is super-flaky right now"
-)
 @pytest.mark.network
 @pytest.mark.xrootd
 @pytest.mark.parametrize("use_threads", [True, False], indirect=True)
@@ -322,22 +319,6 @@ def test_xrootd(use_threads):
         assert one[:4] == b"root"
 
 
-@pytest.mark.skip(
-    reason="RECHECK: Run2012B_DoubleMuParked.root is super-flaky right now"
-)
-@pytest.mark.network
-@pytest.mark.xrootd
-@pytest.mark.parametrize("use_threads", [True, False], indirect=True)
-def test_xrootd_deadlock(use_threads):
-    pytest.importorskip("XRootD")
-    # Attach this file to the "test_xrootd_deadlock" function, so it leaks
-    pytest.uproot_test_xrootd_deadlock_f = uproot.source.xrootd.XRootDResource(
-        "root://eospublic.cern.ch//eos/root-eos/cms_opendata_2012_nanoaod/Run2012B_DoubleMuParked.root",
-        timeout=20,
-        use_threads=use_threads,
-    )
-
-
 @pytest.mark.network
 @pytest.mark.xrootd
 @pytest.mark.parametrize("use_threads", [True, False], indirect=True)
@@ -352,9 +333,6 @@ def test_xrootd_fail(use_threads):
         )
 
 
-@pytest.mark.skip(
-    reason="RECHECK: Run2012B_DoubleMuParked.root is super-flaky right now"
-)
 @pytest.mark.network
 @pytest.mark.xrootd
 @pytest.mark.parametrize("use_threads", [True, False], indirect=True)
@@ -376,9 +354,6 @@ def test_xrootd_vectorread(use_threads):
         assert one[:4] == b"root"
 
 
-@pytest.mark.skip(
-    reason="RECHECK: Run2012B_DoubleMuParked.root is super-flaky right now"
-)
 @pytest.mark.network
 @pytest.mark.xrootd
 @pytest.mark.parametrize("use_threads", [True, False], indirect=True)
@@ -398,9 +373,6 @@ def test_xrootd_vectorread_max_element_split(use_threads):
         assert len(one) == max_element_size + 1
 
 
-@pytest.mark.skip(
-    reason="RECHECK: Run2012B_DoubleMuParked.root is super-flaky right now"
-)
 @pytest.mark.network
 @pytest.mark.xrootd
 @pytest.mark.parametrize("use_threads", [True, False], indirect=True)
@@ -408,8 +380,8 @@ def test_xrootd_vectorread_max_element_split_consistency(use_threads):
     pytest.importorskip("XRootD")
     filename = "root://eospublic.cern.ch//eos/root-eos/cms_opendata_2012_nanoaod/Run2012B_DoubleMuParked.root"
 
-    def get_chunk(Source, **kwargs):
-        with Source(filename, **kwargs) as source:
+    def get_chunk(source_cls, **kwargs):
+        with source_cls(filename, **kwargs) as source:
             notifications = queue.Queue()
             max_element_size = 2097136
             chunks = source.chunks([(0, max_element_size + 1)], notifications)
@@ -444,9 +416,6 @@ def test_xrootd_vectorread_fail(use_threads):
         )
 
 
-@pytest.mark.skip(
-    reason="RECHECK: Run2012B_DoubleMuParked.root is super-flaky right now"
-)
 @pytest.mark.network
 @pytest.mark.xrootd
 @pytest.mark.parametrize("use_threads", [True, False], indirect=True)
@@ -461,7 +430,6 @@ def test_xrootd_size(use_threads):
     ) as source:
         size1 = source.num_bytes
 
-    pytest.importorskip("XRootD")
     with uproot.source.xrootd.MultithreadedXRootDSource(
         "root://eospublic.cern.ch//eos/root-eos/cms_opendata_2012_nanoaod/Run2012B_DoubleMuParked.root",
         timeout=10,
@@ -474,9 +442,6 @@ def test_xrootd_size(use_threads):
     assert size1 == 3469136394
 
 
-@pytest.mark.skip(
-    reason="RECHECK: Run2012B_DoubleMuParked.root is super-flaky right now"
-)
 @pytest.mark.network
 @pytest.mark.xrootd
 @pytest.mark.parametrize("use_threads", [True, False], indirect=True)
diff --git a/tests/test_0006_notify_when_downloaded.py b/tests/test_0006_notify_when_downloaded.py
index aea1a96da..b79b80e2f 100644
--- a/tests/test_0006_notify_when_downloaded.py
+++ b/tests/test_0006_notify_when_downloaded.py
@@ -145,9 +145,6 @@ def test_http_fallback_workers(server):
             expected.pop((chunk.start, chunk.stop))
 
 
-@pytest.mark.skip(
-    reason="RECHECK: Run2012B_DoubleMuParked.root is super-flaky right now"
-)
 @pytest.mark.network
 @pytest.mark.xrootd
 def test_xrootd():
@@ -168,9 +165,6 @@ def test_xrootd():
             expected.pop((chunk.start, chunk.stop))
 
 
-@pytest.mark.skip(
-    reason="RECHECK: Run2012B_DoubleMuParked.root is super-flaky right now"
-)
 @pytest.mark.network
 @pytest.mark.xrootd
 def test_xrootd_workers():
@@ -191,9 +185,6 @@ def test_xrootd_workers():
             expected.pop((chunk.start, chunk.stop))
 
 
-@pytest.mark.skip(
-    reason="RECHECK: Run2012B_DoubleMuParked.root is super-flaky right now"
-)
 @pytest.mark.network
 @pytest.mark.xrootd
 def test_xrootd_vectorread():
diff --git a/tests/test_0007_single_chunk_interface.py b/tests/test_0007_single_chunk_interface.py
index 5f3223a7a..dd20d134c 100644
--- a/tests/test_0007_single_chunk_interface.py
+++ b/tests/test_0007_single_chunk_interface.py
@@ -125,9 +125,6 @@ def test_http_multipart_fail():
             tobytes(source.chunk(0, 100).raw_data)
 
 
-@pytest.mark.skip(
-    reason="RECHECK: Run2012B_DoubleMuParked.root is super-flaky right now"
-)
 @pytest.mark.network
 @pytest.mark.xrootd
 def test_xrootd():
@@ -147,9 +144,6 @@ def test_xrootd():
         assert one[:4] == b"root"
 
 
-@pytest.mark.skip(
-    reason="RECHECK: Run2012B_DoubleMuParked.root is super-flaky right now"
-)
 @pytest.mark.network
 @pytest.mark.xrootd
 def test_xrootd_worker():
@@ -169,9 +163,6 @@ def test_xrootd_worker():
         assert one[:4] == b"root"
 
 
-@pytest.mark.skip(
-    reason="RECHECK: Run2012B_DoubleMuParked.root is super-flaky right now"
-)
 @pytest.mark.network
 @pytest.mark.xrootd
 def test_xrootd_vectorread():
diff --git a/tests/test_0302-pickle.py b/tests/test_0302_pickle.py
similarity index 94%
rename from tests/test_0302-pickle.py
rename to tests/test_0302_pickle.py
index b16603538..1177c7088 100644
--- a/tests/test_0302-pickle.py
+++ b/tests/test_0302_pickle.py
@@ -53,9 +53,6 @@ def test_pickle_roundtrip_http():
     ]
 
 
-@pytest.mark.skip(
-    reason="RECHECK: Run2012B_DoubleMuParked.root is super-flaky right now"
-)
 @pytest.mark.network
 @pytest.mark.xrootd
 def test_pickle_roundtrip_xrootd():
diff --git a/tests/test_0303-empty-jagged-array.py b/tests/test_0303_empty_jagged_array.py
similarity index 100%
rename from tests/test_0303-empty-jagged-array.py
rename to tests/test_0303_empty_jagged_array.py