PYTHON-5492 Mark csot test as flaky on linux as well

Author: blink1073

.evergreen/scripts/install-dependencies.sh

@@ -48,6 +48,7 @@ if ! command -v just &>/dev/null; then
     _TARGET="--target x86_64-pc-windows-msvc"
   fi
   _BIN_DIR=$PYMONGO_BIN_DIR
+  mkdir -p ${_BIN_DIR}
   echo "Installing just..."
   mkdir -p "$_BIN_DIR" 2>/dev/null || true
   curl --proto '=https' --tlsv1.2 -sSf https://just.systems/install.sh | bash -s -- $_TARGET --to "$_BIN_DIR" || {
@@ -59,6 +60,7 @@ fi
 # Ensure uv is installed.
 if ! command -v uv &>/dev/null; then
   _BIN_DIR=$PYMONGO_BIN_DIR
+  mkdir -p ${_BIN_DIR}
   echo "Installing uv..."
   # On most systems we can install directly.
   curl -LsSf https://astral.sh/uv/install.sh | env UV_INSTALL_DIR="$_BIN_DIR" INSTALLER_NO_MODIFY_PATH=1 sh || {

test/asynchronous/test_pooling.py

@@ -429,7 +429,7 @@ async def find_one():
         # maxConnecting = unbounded: 30+ connections in ~0.140+ seconds
         print(len(pool.conns))
 
-    @flaky(reason="PYTHON-5492")
+    @flaky(reason="PYTHON-5492", affects_cpython_linux=True)
     @async_client_context.require_failCommand_appName
     async def test_csot_timeout_message(self):
         client = await self.async_rs_or_single_client(appName="connectionTimeoutApp")

test/test_pooling.py

@@ -429,7 +429,7 @@ def find_one():
         # maxConnecting = unbounded: 30+ connections in ~0.140+ seconds
         print(len(pool.conns))
 
-    @flaky(reason="PYTHON-5492")
+    @flaky(reason="PYTHON-5492", affects_cpython_linux=True)
     @client_context.require_failCommand_appName
     def test_csot_timeout_message(self):
         client = self.rs_or_single_client(appName="connectionTimeoutApp")