diff --git a/changelogs/fragments/1161-fix.yml b/changelogs/fragments/1161-fix.yml
new file mode 100644
index 00000000..a7446de4
--- /dev/null
+++ b/changelogs/fragments/1161-fix.yml
@@ -0,0 +1,4 @@
+bugfixes:
+  - "docker connection plugin - fix crash instead of warning if Docker version does not support ``remote_user`` (https://github.com/ansible-collections/community.docker/pull/1161)."
+  - "docker_compose_v2_exec - fix crash instead of reporting error if ``detach=true`` and ``stdin`` is provided (https://github.com/ansible-collections/community.docker/pull/1161)."
+  - "docker_compose_v2_run - fix crash instead of reporting error if ``detach=true`` and ``stdin`` is provided (https://github.com/ansible-collections/community.docker/pull/1161)."
diff --git a/plugins/connection/docker.py b/plugins/connection/docker.py
index 8fd86f88..f4b8ce4e 100644
--- a/plugins/connection/docker.py
+++ b/plugins/connection/docker.py
@@ -320,7 +320,7 @@ class Connection(ConnectionBase):
                 actual_user = self._get_docker_remote_user()
                 if actual_user != self.get_option('remote_user'):
                     display.warning(u'docker {0} does not support remote_user, using container default: {1}'
-                                    .format(self.docker_version, self.actual_user or u'?'))
+                                    .format(self.docker_version, actual_user or u'?'))
                 return actual_user
         elif self._display.verbosity > 2:
             # Since we are not setting the actual_user, look it up so we have it for logging later
diff --git a/plugins/modules/docker_compose_v2_exec.py b/plugins/modules/docker_compose_v2_exec.py
index 13fcab0c..e7eead9d 100644
--- a/plugins/modules/docker_compose_v2_exec.py
+++ b/plugins/modules/docker_compose_v2_exec.py
@@ -203,7 +203,7 @@ class ExecManager(BaseComposeManager):
             self.argv = shlex.split(parameters['command'])
 
         if self.detach and self.stdin is not None:
-            self.mail('If detach=true, stdin cannot be provided.')
+            self.fail('If detach=true, stdin cannot be provided.')
 
         if self.stdin is not None and parameters['stdin_add_newline']:
             self.stdin += '\n'
diff --git a/plugins/modules/docker_compose_v2_run.py b/plugins/modules/docker_compose_v2_run.py
index b9352404..a02666cb 100644
--- a/plugins/modules/docker_compose_v2_run.py
+++ b/plugins/modules/docker_compose_v2_run.py
@@ -289,7 +289,7 @@ class ExecManager(BaseComposeManager):
             self.argv = shlex.split(parameters['command'])
 
         if self.detach and self.stdin is not None:
-            self.mail('If detach=true, stdin cannot be provided.')
+            self.fail('If detach=true, stdin cannot be provided.')
 
         if self.stdin is not None and parameters['stdin_add_newline']:
             self.stdin += '\n'