I'd like to tune down logging during Maven Invoker tests. Right now logs are polluted with sequence of Downloading and Downloaded for every dependency in every test separately.
[INFO] [INFO] Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/surefire/surefire-grouper/2.19/surefire-grouper-2.19.jar
[INFO] [INFO] Downloaded: https://repo.maven.apache.org/maven2/org/apache/maven/surefire/surefire-grouper/2.19/surefire-grouper-2.19.jar (38 KB at 1292.5 KB/sec)
I want to preserve all other logs, so mvn -q is not an option. Also, --batch-mode hides just downloading progress, not Downloading and Downloaded logs.
Adding
-Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn
to MAVEN_OPTS should help with that. At least in maven 3.2.3 and 3.3.9 (those were the ones I've tested).