The symptoms look very much like this: https://github.com/travis-ci/travis-ci/issues/8499 <https://github.com/travis-ci/travis-ci/issues/8499>.
If so, maven versions before 3.5.0 (e.g. 3.3.9) should be OK. Julian > On May 29, 2018, at 2:46 PM, Kevin Risden <kris...@apache.org> wrote: > > Are they fixed in Maven proper or are we relying on a default Maven plugin > version that is failing? > > Maven 3.5.3 was released early in March. Seems weird to require such a > recent version. > > I can try to take a look tonight to see if I can reproduce. > > Kevin Risden > > On Tue, May 29, 2018, 16:43 Michael Mior <mm...@uwaterloo.ca> wrote: > >> Sounds like a good idea to me. Unfortunately, Ubuntu 18.04 (the current LTS >> release) is currently on Maven 3.5.2. Not much we can do about that though. >> >> -- >> Michael Mior >> mm...@uwaterloo.ca >> >> >> Le mar. 29 mai 2018 à 17:24, Julian Hyde <jh...@apache.org> a écrit : >> >>> I’ve run into problems building Avatica using maven-3.5.2 that are fixed >>> using maven-3.5.3. When executing “mvn clean install javadoc:javadoc >> site” >>> (on Ubuntu, on virtually any JDK version), I get >>> >>> [ERROR] Failed to execute goal >>> org.apache.maven.plugins:maven-shade-plugin:2.1:shade (default) on >> project >>> avatica-standalone-server: Error creating shaded jar: >>> /home/jhyde/regress/calcite-avatica/server/target/classes (Is a >> directory) >>> -> [Help 1] >>> >>> The currently recommended version is "3.2.1 or later” [1]. Any objections >>> if I change the recommended version to "3.5.3 or later”? >>> >>> >>> Julian >>> >>> [1] http://calcite.apache.org/avatica/develop/avatica.html < >>> http://calcite.apache.org/avatica/develop/avatica.html> >>
