I merged AVRO-3009 as discussed in the recent thread. As it turns out, some things that had worked in my tests and work generally are not enabled by infra. Thus, some languages' tests are not able to run. Also, the C test failed with
Could not transfer artifact org.apache.commons:commons-lang3:jar:3.7 from/to central (https://repo.maven.apache.org/maven2): Transfer failed for https://repo.maven.apache.org/maven2/org/apache/commons/commons-lang3/3.7/commons-lang3-3.7.jar: Connection reset -> [Help 1] which I think is due to rate limiting, because it succeeded for other tests trying to do the same thing. This jar should be cached, but it may not have had a chance to get into the cache yet. If anyone wants to help, the language-specific setups for each test could be smoother I'm sure.
