Just pointing the maven plugin at https://github.com/Graylog2/graylog2-server fails like this: [INFO] Scanning for projects... Downloading: https://oss.sonatype.org/content/repositories/releases/com/google/inject/guice-bom/4.1.0/guice-bom-4.1.0.pom Downloading: https://repo.maven.apache.org/maven2/com/google/inject/guice-bom/4.1.0/guice-bom-4.1.0.pom Downloading: https://oss.sonatype.org/content/repositories/releases/org/glassfish/hk2/hk2-bom/2.4.0-b31/hk2-bom-2.4.0-b31.pom Downloading: https://repo.maven.apache.org/maven2/org/glassfish/hk2/hk2-bom/2.4.0-b31/hk2-bom-2.4.0-b31.pom Downloading: https://oss.sonatype.org/content/repositories/releases/com/github/joschi/jackson/jackson-bom/2.8.4/jackson-bom-2.8.4.pom Downloading: https://repo.maven.apache.org/maven2/com/github/joschi/jackson/jackson-bom/2.8.4/jackson-bom-2.8.4.pom Downloading: https://oss.sonatype.org/content/repositories/releases/org/glassfish/jersey/jersey-bom/2.22.1/jersey-bom-2.22.1.pom Downloading: https://repo.maven.apache.org/maven2/org/glassfish/jersey/jersey-bom/2.22.1/jersey-bom-2.22.1.pom Downloading: https://oss.sonatype.org/content/repositories/releases/org/apache/logging/log4j/log4j-bom/2.7/log4j-bom-2.7.pom Downloading: https://repo.maven.apache.org/maven2/org/apache/logging/log4j/log4j-bom/2.7/log4j-bom-2.7.pom Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/archetype/archetype-packaging/2.2/archetype-packaging-2.2.pom [ERROR] [ERROR] Some problems were encountered while processing the POMs: [ERROR] Non-resolvable import POM: Could not transfer artifact com.google.inject:guice-bom:pom:4.1.0 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 46, column 25 [ERROR] Non-resolvable import POM: Could not transfer artifact org.glassfish.hk2:hk2-bom:pom:2.4.0-b31 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 53, column 25 [ERROR] Non-resolvable import POM: Could not transfer artifact com.github.joschi.jackson:jackson-bom:pom:2.8.4 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 60, column 25 [ERROR] Non-resolvable import POM: Could not transfer artifact org.glassfish.jersey:jersey-bom:pom:2.22.1 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 67, column 25 [ERROR] Non-resolvable import POM: Could not transfer artifact org.apache.logging.log4j:log4j-bom:pom:2.7 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 211, column 25 [ERROR] Unresolveable build extension: Plugin org.apache.maven.archetype:archetype-packaging:2.2 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.archetype:archetype-packaging:jar:2.2 @ [ERROR] Unknown packaging: maven-archetype @ org.graylog:graylog-plugin-archetype:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-plugin-archetype/pom.xml, line 36, column 16 [ERROR] Non-resolvable import POM: Failure to transfer com.google.inject:guice-bom:pom:4.1.0 from https://oss.sonatype.org/content/repositories/releases was cached in the local repository, resolution will not be reattempted until the update interval of sonatype-nexus-releases has elapsed or updates are forced. Original error: Could not transfer artifact com.google.inject:guice-bom:pom:4.1.0 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 46, column 25 [ERROR] Non-resolvable import POM: Failure to transfer org.glassfish.hk2:hk2-bom:pom:2.4.0-b31 from https://oss.sonatype.org/content/repositories/releases was cached in the local repository, resolution will not be reattempted until the update interval of sonatype-nexus-releases has elapsed or updates are forced. Original error: Could not transfer artifact org.glassfish.hk2:hk2-bom:pom:2.4.0-b31 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 53, column 25 [ERROR] Non-resolvable import POM: Failure to transfer com.github.joschi.jackson:jackson-bom:pom:2.8.4 from https://oss.sonatype.org/content/repositories/releases was cached in the local repository, resolution will not be reattempted until the update interval of sonatype-nexus-releases has elapsed or updates are forced. Original error: Could not transfer artifact com.github.joschi.jackson:jackson-bom:pom:2.8.4 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 60, column 25 [ERROR] Non-resolvable import POM: Failure to transfer org.glassfish.jersey:jersey-bom:pom:2.22.1 from https://oss.sonatype.org/content/repositories/releases was cached in the local repository, resolution will not be reattempted until the update interval of sonatype-nexus-releases has elapsed or updates are forced. Original error: Could not transfer artifact org.glassfish.jersey:jersey-bom:pom:2.22.1 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 67, column 25 [ERROR] Non-resolvable import POM: Failure to transfer org.apache.logging.log4j:log4j-bom:pom:2.7 from https://oss.sonatype.org/content/repositories/releases was cached in the local repository, resolution will not be reattempted until the update interval of sonatype-nexus-releases has elapsed or updates are forced. Original error: Could not transfer artifact org.apache.logging.log4j:log4j-bom:pom:2.7 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 211, column 25 @ [ERROR] The build could not read 2 projects -> [Help 1] [ERROR] [ERROR] The project org.graylog:graylog-project-parent:2.2.0-alpha.5-SNAPSHOT (/home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml) has 5 errors [ERROR] Non-resolvable import POM: Could not transfer artifact com.google.inject:guice-bom:pom:4.1.0 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 46, column 25 -> [Help 2] [ERROR] Non-resolvable import POM: Could not transfer artifact org.glassfish.hk2:hk2-bom:pom:2.4.0-b31 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 53, column 25 -> [Help 2] [ERROR] Non-resolvable import POM: Could not transfer artifact com.github.joschi.jackson:jackson-bom:pom:2.8.4 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 60, column 25 -> [Help 2] [ERROR] Non-resolvable import POM: Could not transfer artifact org.glassfish.jersey:jersey-bom:pom:2.22.1 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 67, column 25 -> [Help 2] [ERROR] Non-resolvable import POM: Could not transfer artifact org.apache.logging.log4j:log4j-bom:pom:2.7 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 211, column 25 -> [Help 2] [ERROR] [ERROR] The project org.graylog:graylog-plugin-archetype:2.2.0-alpha.5-SNAPSHOT (/home/daniel/graylog2-server/parts/graylog-server/build/graylog-plugin-archetype/pom.xml) has 7 errors [ERROR] Unresolveable build extension: Plugin org.apache.maven.archetype:archetype-packaging:2.2 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.archetype:archetype-packaging:jar:2.2: Could not transfer artifact org.apache.maven.archetype:archetype-packaging:pom:2.2 from/to central (https://repo.maven.apache.org/maven2): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty -> [Help 3] [ERROR] Unknown packaging: maven-archetype @ org.graylog:graylog-plugin-archetype:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-plugin-archetype/pom.xml, line 36, column 16 [ERROR] Non-resolvable import POM: Failure to transfer com.google.inject:guice-bom:pom:4.1.0 from https://oss.sonatype.org/content/repositories/releases was cached in the local repository, resolution will not be reattempted until the update interval of sonatype-nexus-releases has elapsed or updates are forced. Original error: Could not transfer artifact com.google.inject:guice-bom:pom:4.1.0 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 46, column 25 -> [Help 2] [ERROR] Non-resolvable import POM: Failure to transfer org.glassfish.hk2:hk2-bom:pom:2.4.0-b31 from https://oss.sonatype.org/content/repositories/releases was cached in the local repository, resolution will not be reattempted until the update interval of sonatype-nexus-releases has elapsed or updates are forced. Original error: Could not transfer artifact org.glassfish.hk2:hk2-bom:pom:2.4.0-b31 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 53, column 25 -> [Help 2] [ERROR] Non-resolvable import POM: Failure to transfer com.github.joschi.jackson:jackson-bom:pom:2.8.4 from https://oss.sonatype.org/content/repositories/releases was cached in the local repository, resolution will not be reattempted until the update interval of sonatype-nexus-releases has elapsed or updates are forced. Original error: Could not transfer artifact com.github.joschi.jackson:jackson-bom:pom:2.8.4 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 60, column 25 -> [Help 2] [ERROR] Non-resolvable import POM: Failure to transfer org.glassfish.jersey:jersey-bom:pom:2.22.1 from https://oss.sonatype.org/content/repositories/releases was cached in the local repository, resolution will not be reattempted until the update interval of sonatype-nexus-releases has elapsed or updates are forced. Original error: Could not transfer artifact org.glassfish.jersey:jersey-bom:pom:2.22.1 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 67, column 25 -> [Help 2] [ERROR] Non-resolvable import POM: Failure to transfer org.apache.logging.log4j:log4j-bom:pom:2.7 from https://oss.sonatype.org/content/repositories/releases was cached in the local repository, resolution will not be reattempted until the update interval of sonatype-nexus-releases has elapsed or updates are forced. Original error: Could not transfer artifact org.apache.logging.log4j:log4j-bom:pom:2.7 from/to sonatype-nexus-releases (https://oss.sonatype.org/content/repositories/releases): java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty @ org.graylog:graylog-project-parent:[unknown-version], /home/daniel/graylog2-server/parts/graylog-server/build/graylog-project-parent/pom.xml, line 211, column 25 -> [Help 2] [ERROR] [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] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException [ERROR] [Help 2] http://cwiki.apache.org/confluence/display/MAVEN/UnresolvableModelException [ERROR] [Help 3] http://cwiki.apache.org/confluence/display/MAVEN/PluginManagerException