I was able to reproduce this and it looks like the root cause: https://issues.apache.org/jira/browse/MNG-6300
Maven 3.5.3 fixes this. Maven 3.5.1 and 3.5.2 look to be the only versions that have the offending Maven commit (be223808939d75152d7157db33d45f230114555e) but no fix. Maven 3.5.0 works as well. Doesn't look like there is anything we can do to work around this from what I can tell. Kevin Risden On Tue, May 29, 2018 at 5:19 PM, Julian Hyde <jh...@apache.org> wrote: > 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> > >> > >
