/usr/share/maven-repo/org/antlr/ is in antlr3 3.2.is.3.2-7ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/maven-repo/org/antlr/antlr/
/usr/share/maven-repo/org/antlr/antlr-master/
/usr/share/maven-repo/org/antlr/antlr-master/3.2/
/usr/share/maven-repo/org/antlr/antlr-master/3.2/antlr-master-3.2.pom
/usr/share/maven-repo/org/antlr/antlr-master/3.x/
/usr/share/maven-repo/org/antlr/antlr-master/3.x/antlr-master-3.x.pom
/usr/share/maven-repo/org/antlr/antlr-runtime/
/usr/share/maven-repo/org/antlr/antlr-runtime/3.2/
/usr/share/maven-repo/org/antlr/antlr-runtime/3.2/antlr-runtime-3.2.jar
/usr/share/maven-repo/org/antlr/antlr-runtime/3.2/antlr-runtime-3.2.pom
/usr/share/maven-repo/org/antlr/antlr-runtime/3.x/
/usr/share/maven-repo/org/antlr/antlr-runtime/3.x/antlr-runtime-3.x.jar
/usr/share/maven-repo/org/antlr/antlr-runtime/3.x/antlr-runtime-3.x.pom
/usr/share/maven-repo/org/antlr/antlr/3.2/
/usr/share/maven-repo/org/antlr/antlr/3.2/antlr-3.2.jar
/usr/share/maven-repo/org/antlr/antlr/3.2/antlr-3.2.pom
/usr/share/maven-repo/org/antlr/antlr/3.x/
/usr/share/maven-repo/org/antlr/antlr/3.x/antlr-3.x.jar
/usr/share/maven-repo/org/antlr/antlr/3.x/antlr-3.x.pom