tests/docker: avoid invalid escape in Python string

This is an error in Python 3.12; fix it by using a raw string literal.

Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/tests/docker/docker.py b/tests/docker/docker.py
index 688ef62989c6817dd39a79f44f44a094c6c05e58..3b8a26704df1987dac947219a3cea47a6121f0b9 100755 (executable)
--- a/tests/docker/docker.py
+++ b/tests/docker/docker.py
@@ -186,7 +186,7 @@ def _check_binfmt_misc(executable):
               (binary))
         return None, True
 
-    m = re.search("interpreter (\S+)\n", entry)
+    m = re.search(r"interpreter (\S+)\n", entry)
     interp = m.group(1)
     if interp and interp != executable:
         print("binfmt_misc for %s does not point to %s, using %s" %