/usr/share/maven-repo/org/antlr/ is in libantlr3-runtime-java 3.5.2-9.
This file is owned by root:root, with mode 0o755.
..
/usr/share/maven-repo/org/antlr/antlr-master/
/usr/share/maven-repo/org/antlr/antlr-master/3.5.2/
/usr/share/maven-repo/org/antlr/antlr-master/3.5.2/antlr-master-3.5.2.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/3.5.2/
/usr/share/maven-repo/org/antlr/antlr-runtime/3.5.2/antlr-runtime-3.5.2.jar
/usr/share/maven-repo/org/antlr/antlr-runtime/3.5.2/antlr-runtime-3.5.2.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