diff --git a/AUTHORS b/AUTHORS
index 9f6ee048d..e11400c1f 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -267,5 +267,6 @@ Wouter van Ackooy
 Xixi Zhao
 Xuan Luong
 Xuecong Liao
+Yoav Caspi
 Zac Hatfield-Dodds
 Zoltán Máté
diff --git a/changelog/5906.bugfix.rst b/changelog/5906.bugfix.rst
new file mode 100644
index 000000000..f5ded6cd2
--- /dev/null
+++ b/changelog/5906.bugfix.rst
@@ -0,0 +1 @@
+Fix crash with ``KeyboardInterrupt`` during ``--setup-show``.
diff --git a/doc/en/example/parametrize.rst b/doc/en/example/parametrize.rst
index 0b94e425c..1220cfb4d 100644
--- a/doc/en/example/parametrize.rst
+++ b/doc/en/example/parametrize.rst
@@ -678,4 +678,4 @@ Or, if desired, you can ``pip install contextlib2`` and use:
 
 .. code-block:: python
 
-    from contextlib2 import ExitStack as does_not_raise
+    from contextlib2 import nullcontext as does_not_raise
diff --git a/src/_pytest/cacheprovider.py b/src/_pytest/cacheprovider.py
index 496931e0f..7a5deaa39 100755
--- a/src/_pytest/cacheprovider.py
+++ b/src/_pytest/cacheprovider.py
@@ -135,7 +135,7 @@ class Cache:
         readme_path.write_text(README_CONTENT)
 
         gitignore_path = self._cachedir.joinpath(".gitignore")
-        msg = "# Created by pytest automatically.\n*"
+        msg = "# Created by pytest automatically.\n*\n"
         gitignore_path.write_text(msg, encoding="UTF-8")
 
         cachedir_tag_path = self._cachedir.joinpath("CACHEDIR.TAG")
diff --git a/src/_pytest/config/__init__.py b/src/_pytest/config/__init__.py
index cd23281fa..ea709a26a 100644
--- a/src/_pytest/config/__init__.py
+++ b/src/_pytest/config/__init__.py
@@ -195,7 +195,6 @@ def get_plugin_manager():
 
 
 def _prepareconfig(args=None, plugins=None):
-    warning = None
     if args is None:
         args = sys.argv[1:]
     elif isinstance(args, py.path.local):
@@ -213,10 +212,6 @@ def _prepareconfig(args=None, plugins=None):
                     pluginmanager.consider_pluginarg(plugin)
                 else:
                     pluginmanager.register(plugin)
-        if warning:
-            from _pytest.warnings import _issue_warning_captured
-
-            _issue_warning_captured(warning, hook=config.hook, stacklevel=4)
         return pluginmanager.hook.pytest_cmdline_parse(
             pluginmanager=pluginmanager, args=args
         )
diff --git a/src/_pytest/setuponly.py b/src/_pytest/setuponly.py
index 70d6ed12f..639349748 100644
--- a/src/_pytest/setuponly.py
+++ b/src/_pytest/setuponly.py
@@ -1,5 +1,3 @@
-import sys
-
 import pytest
 
 
@@ -51,7 +49,6 @@ def _show_fixture_action(fixturedef, msg):
     capman = config.pluginmanager.getplugin("capturemanager")
     if capman:
         capman.suspend_global_capture()
-        out, err = capman.read_global_capture()
 
     tw = config.get_terminal_writer()
     tw.line()
@@ -74,8 +71,6 @@ def _show_fixture_action(fixturedef, msg):
 
     if capman:
         capman.resume_global_capture()
-        sys.stdout.write(out)
-        sys.stderr.write(err)
 
 
 @pytest.hookimpl(tryfirst=True)
diff --git a/testing/test_cacheprovider.py b/testing/test_cacheprovider.py
index e2fd5a4ca..fc788e304 100644
--- a/testing/test_cacheprovider.py
+++ b/testing/test_cacheprovider.py
@@ -1029,7 +1029,7 @@ def test_gitignore(testdir):
     config = testdir.parseconfig()
     cache = Cache.for_config(config)
     cache.set("foo", "bar")
-    msg = "# Created by pytest automatically.\n*"
+    msg = "# Created by pytest automatically.\n*\n"
     gitignore_path = cache._cachedir.joinpath(".gitignore")
     assert gitignore_path.read_text(encoding="UTF-8") == msg
 
diff --git a/testing/test_setuponly.py b/testing/test_setuponly.py
index 6343991ae..7549874db 100644
--- a/testing/test_setuponly.py
+++ b/testing/test_setuponly.py
@@ -1,4 +1,5 @@
 import pytest
+from _pytest.main import ExitCode
 
 
 @pytest.fixture(params=["--setup-only", "--setup-plan", "--setup-show"], scope="module")
@@ -267,3 +268,27 @@ def test_show_fixtures_and_execute_test(testdir):
     result.stdout.fnmatch_lines(
         ["*SETUP    F arg*", "*test_arg (fixtures used: arg)F*", "*TEARDOWN F arg*"]
     )
+
+
+def test_setup_show_with_KeyboardInterrupt_in_test(testdir):
+    p = testdir.makepyfile(
+        """
+        import pytest
+        @pytest.fixture
+        def arg():
+            pass
+        def test_arg(arg):
+            raise KeyboardInterrupt()
+    """
+    )
+    result = testdir.runpytest("--setup-show", p, no_reraise_ctrlc=True)
+    result.stdout.fnmatch_lines(
+        [
+            "*SETUP    F arg*",
+            "*test_arg (fixtures used: arg)*",
+            "*TEARDOWN F arg*",
+            "*! KeyboardInterrupt !*",
+            "*= no tests ran in *",
+        ]
+    )
+    assert result.ret == ExitCode.INTERRUPTED