Cannot build Lucee from source

Following the instructions here and trying to run

mvn test

from the loader subfolder, I get the following error:

[INFO] ------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.354 s
[INFO] Finished at: 2017-04-13T10:19:22-04:00
[INFO] Final Memory: 20M/377M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project lucee: Could not resolve dependencies for project org.lucee:lucee:jar: The following artifacts could not be resolved: org.apache.commons:image:jar:1.0.0.R1534292, org.apache:oro:jar:2.0.8, backport.util:concurrent:jar:2.2.0, fusiondebug.api:server:jar:1.0.20, hsqldb:hsqldb:jar:1.8.0, jacob:jacob:jar:1.16.1, javasysmon:javasysmon:jar:0.3.3, org.samba:jcifs:jar:1.3.17, jencrypt:jencrypt:jar:, metadata:extractor:jar:, ss:css2:jar:0.9.4, stax:api:jar:, sun.jai:codec:jar:, sun.jai:core:jar:, sun.jndi:ldap:jar:1.2.4, sun.jndi:ldapbp:jar:1.2.4, sun.jndi:ldapsec:jar:1.2.4, sun.jndi:providerutil:jar:1.2.4, javax.mail:activation:jar:,, tagsoup:tagsoup:jar:, w3c:dom:jar:1.1.0, xdb:xdb:jar:1.0.0, xmlparserv2:xmlparserv2:jar:1.2.2, xmpcore:xmpcore:jar: Could not find artifact org.apache.commons:image:jar:1.0.0.R1534292 in nexus ( -> [Help 1]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1]

Is there some super duper secret maven repository I need to be using?