/usr/share/maven-repo/org/antlr/ is in libantlr4-runtime-java 4.5.3-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/maven-repo/org/antlr/antlr4-master/
/usr/share/maven-repo/org/antlr/antlr4-master/4.5.4-SNAPSHOT/
/usr/share/maven-repo/org/antlr/antlr4-master/4.5.4-SNAPSHOT/antlr4-master-4.5.4-SNAPSHOT.pom
/usr/share/maven-repo/org/antlr/antlr4-master/debian/
/usr/share/maven-repo/org/antlr/antlr4-master/debian/antlr4-master-debian.pom
/usr/share/maven-repo/org/antlr/antlr4-runtime/
/usr/share/maven-repo/org/antlr/antlr4-runtime/4.5.4-SNAPSHOT/
/usr/share/maven-repo/org/antlr/antlr4-runtime/4.5.4-SNAPSHOT/antlr4-runtime-4.5.4-SNAPSHOT.jar
/usr/share/maven-repo/org/antlr/antlr4-runtime/4.5.4-SNAPSHOT/antlr4-runtime-4.5.4-SNAPSHOT.pom
/usr/share/maven-repo/org/antlr/antlr4-runtime/debian/
/usr/share/maven-repo/org/antlr/antlr4-runtime/debian/antlr4-runtime-debian.jar
/usr/share/maven-repo/org/antlr/antlr4-runtime/debian/antlr4-runtime-debian.pom