it looks like the artifacts were deleted from maven

[flocsy]

look here: https://repo1.maven.org/maven2/com/github/
there's no subdir: grumlimited
http://artifactory.eu.moovitapp.com/artifactory/libs-release/com/github/grumlimited/geocalc/0.5.8/geocalc-0.5.8.pom => 404
http://artifactory.eu.moovitapp.com/artifactory/libs-release/com/github/grumlimited/geocalc/0.6/geocalc-0.6.pom => 404