From 8beeaf1a73c6bd0bb2e43e4196a0b58a6de35805 Mon Sep 17 00:00:00 2001
From: Chad Retz <chad@temporal.io>
Date: Mon, 23 Oct 2023 14:54:12 -0500
Subject: [PATCH] CI fix

---
 .github/workflows/ci.yml       |  6 ++++--
 README.md                      |  3 +--
 tests/test_client.py           | 17 +++++++----------
 tests/testing/test_workflow.py |  3 +--
 4 files changed, 13 insertions(+), 16 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1c74a791..13f7724e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -44,11 +44,13 @@ jobs:
       - if: ${{ !endsWith(matrix.os, '-arm') }}
         uses: actions/setup-python@v4
         with:
-          python-version: ${{ matrix.python }}
+          # Due to a yet-uninvestigated change in 3.11.6 that breaks the Rust
+          # linker, we are pinning 3.11 to 3.11.5 here
+          python-version: ${{ matrix.python == '3.11' && '3.11.5' || matrix.python }}
       - if: ${{ matrix.os == 'ubuntu-arm' }}
         uses: deadsnakes/action@v2.1.1
         with:
-          python-version: ${{ matrix.python }}
+          python-version: ${{ matrix.python == '3.11' && '3.11.5' || matrix.python }}
       # Using fixed Poetry version until
       # https://github.com/python-poetry/poetry/issues/7611 and
       # https://github.com/python-poetry/poetry/pull/7694 are fixed
diff --git a/README.md b/README.md
index 600730b5..bc311e34 100644
--- a/README.md
+++ b/README.md
@@ -733,8 +733,7 @@ This internally downloads the Temporal time-skipping test server to a temporary
 then starts the test server which has special APIs for skipping time.
 
 **NOTE:** The time-skipping test environment does not work on ARM. The SDK will try to download the x64 binary on macOS
-for use with the Intel emulator, but for Linux or Windows ARM there will be no proper time-skipping test server at this
-time.
+for use with the Intel emulator, but for Linux or Windows ARM there is no proper time-skipping test server at this time.
 
 ##### Automatic Time Skipping
 
diff --git a/tests/test_client.py b/tests/test_client.py
index 913f3aef..7ce9d307 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -910,10 +910,7 @@ async def test_schedule_backfill(
         pytest.skip("Java test server doesn't support schedules")
     await assert_no_schedules(client)
 
-    # Just in case it's on the minute boundary, move it off
-    now = datetime.utcnow()
-    if now.second == 0:
-        now += timedelta(seconds=1)
+    begin = datetime(year=2020, month=1, day=20, hour=5)
 
     # Create paused schedule that runs every minute and has two backfills
     handle = await client.create_schedule(
@@ -934,8 +931,8 @@ async def test_schedule_backfill(
         ),
         backfill=[
             ScheduleBackfill(
-                start_at=now - timedelta(minutes=30),
-                end_at=now - timedelta(minutes=29),
+                start_at=begin - timedelta(minutes=30),
+                end_at=begin - timedelta(minutes=29),
                 overlap=ScheduleOverlapPolicy.ALLOW_ALL,
             )
         ],
@@ -945,13 +942,13 @@ async def test_schedule_backfill(
     # Add two more backfills and and -2m will be deduped
     await handle.backfill(
         ScheduleBackfill(
-            start_at=now - timedelta(minutes=4),
-            end_at=now - timedelta(minutes=2),
+            start_at=begin - timedelta(minutes=4),
+            end_at=begin - timedelta(minutes=2),
             overlap=ScheduleOverlapPolicy.ALLOW_ALL,
         ),
         ScheduleBackfill(
-            start_at=now - timedelta(minutes=2),
-            end_at=now,
+            start_at=begin - timedelta(minutes=2),
+            end_at=begin,
             overlap=ScheduleOverlapPolicy.ALLOW_ALL,
         ),
     )
diff --git a/tests/testing/test_workflow.py b/tests/testing/test_workflow.py
index e0c1117b..22bdd818 100644
--- a/tests/testing/test_workflow.py
+++ b/tests/testing/test_workflow.py
@@ -132,8 +132,7 @@ async def test_workflow_env_time_skipping_heartbeat_timeout():
             # Check the causes until heartbeat timeout
             assert isinstance(err.value.cause, ActivityError)
             assert isinstance(err.value.cause.cause, TimeoutError)
-            assert isinstance(err.value.cause.cause.cause, TimeoutError)
-            assert err.value.cause.cause.cause.type == TimeoutType.HEARTBEAT
+            assert err.value.cause.cause.type == TimeoutType.HEARTBEAT
 
 
 @workflow.defn