-testfailuremsg "E: The repository 'https://localhost:${APTHTTPSPORT} stable Release' does not have a Release file." apt update
-testfailure aptget update -q=0 --no-allow-insecure-repositories
+testfailuremsg "E: The repository 'https://localhost:${APTHTTPSPORT} stable Release' does not have a Release file.
+N: Updating from such a repository can't be done securely, and is therefore disabled by default.
+N: See apt-secure(8) manpage for repository creation and user configuration details." apt update
+testfailure aptget update --no-allow-insecure-repositories