Checked out Logback 1.3.0-SNAPSHOT into Eclipse Neon.3 (4.6.3). The other modules build OK but the classic module fails with the error:

Error(s) found in manifest configuration (org.apache.felix:maven-bundle-plugin:2.5.4:manifest:bundle-manifest:process-classes) org.apache.maven.plugin.MojoExecutionException: Error(s) found in manifest configurationation

   at org.apache.felix.bundleplugin.ManifestPlugin.execute(ManifestPlugin.java:84)

The maven console shows the error:

5/30/17, 10:58:11 AM EDT: [ERROR] Manifest ch.qos.logback:logback-classic:jar:1.3.0-SNAPSHPOT : The default package '.' is not permitted by the Import-Package syntax.

This can be caused by compile errors in Eclipse because Eclipse creates }}{{valid class files regardless of compile errors.

{{The following package(s) import from the default package [ch.qos.logback.classic.gaffer]   }}

5/30/17, 10:58:11 AM EDT: [ERROR] Error(s) found in manifest configuration