diff --git a/ansible_mitogen/target.py b/ansible_mitogen/target.py
index 40e5c57b..652b5adc 100644
--- a/ansible_mitogen/target.py
+++ b/ansible_mitogen/target.py
@@ -93,7 +93,7 @@ MAKE_TEMP_FAILED_MSG = (
     u"were mounted on 'noexec' filesystems.\n"
     u"\n"
     u"The following paths were tried:\n"
-    u"    %(namelist)s\n"
+    u"    %(paths)s\n"
     u"\n"
     u"Please check '-vvv' output for a log of individual path errors."
 )
diff --git a/docs/changelog.rst b/docs/changelog.rst
index a10ac883..84b24cd0 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -27,6 +27,10 @@ Fixes
 * `#557 <https://github.com/dw/mitogen/issues/557>`_: fix a crash when running
   on machines with high CPU counts.
 
+* `#575 <https://github.com/dw/mitogen/issues/575>`_: fix a crash when
+  rendering an error message to indicate no usable temporary directories could
+  be found.
+
 * `#570 <https://github.com/dw/mitogen/issues/570>`_: the ``firewalld`` module
   internally caches a dbus name that changes across ``firewalld`` restarts,
   causing a failure if the service is restarted between ``firewalld`` module invocations.
@@ -37,7 +41,8 @@ Thanks!
 
 Mitogen would not be possible without the support of users. A huge thanks for
 bug reports, testing, features and fixes in this release contributed by
-`Orion Poplawski <https://github.com/opoplawski>`_, and
+`Orion Poplawski <https://github.com/opoplawski>`_,
+`Thibaut Barrère <https://github.com/thbar>`_, and
 `@Moumoutaru <https://github.com/Moumoutaru>`_.
 
 
diff --git a/tests/ansible/tests/target_test.py b/tests/ansible/tests/target_test.py
index 7d6c0b46..6bdc949b 100644
--- a/tests/ansible/tests/target_test.py
+++ b/tests/ansible/tests/target_test.py
@@ -15,14 +15,47 @@ LOGGER_NAME = ansible_mitogen.target.LOG.name
 
 
 class NamedTemporaryDirectory(object):
+    def __init__(self, **kwargs):
+        self.kwargs = kwargs
+
     def __enter__(self):
-        self.path = tempfile.mkdtemp()
+        self.path = tempfile.mkdtemp(**self.kwargs)
         return self.path
 
     def __exit__(self, _1, _2, _3):
         subprocess.check_call(['rm', '-rf', self.path])
 
 
+class FindGoodTempDirTest(testlib.TestCase):
+    func = staticmethod(ansible_mitogen.target.find_good_temp_dir)
+
+    def test_expands_usernames(self):
+        with NamedTemporaryDirectory(
+            prefix='.ansible_mitogen_test',
+            dir=os.environ['HOME']
+        ) as tmpdir:
+            path = self.func(['~'])
+            self.assertTrue(path.startswith(os.environ['HOME']))
+
+    def test_expands_vars(self):
+        with NamedTemporaryDirectory(
+            prefix='.ansible_mitogen_test',
+            dir=os.environ['HOME']
+        ) as tmpdir:
+            os.environ['somevar'] = 'xyz'
+            path = self.func([tmpdir + '/$somevar'])
+            self.assertTrue(path.startswith('%s/%s' % (tmpdir, 'xyz')))
+
+    @mock.patch('ansible_mitogen.target.is_good_temp_dir')
+    def test_no_good_candidate(self, is_good_temp_dir):
+        is_good_temp_dir.return_value = False
+        e = self.assertRaises(IOError,
+            lambda: self.func([])
+        )
+        self.assertTrue(str(e).startswith('Unable to find a useable'))
+
+
+
 class ApplyModeSpecTest(unittest2.TestCase):
     func = staticmethod(ansible_mitogen.target.apply_mode_spec)