Github user kshchepanovskyi commented on the issue:
https://github.com/apache/logging-log4j2/pull/147
Travis build fails with
```
$ ./mvnw --toolchains=./.travis-toolchains.xml install -DskipTests=true
-Dmaven.javadoc.skip=true -B -V
Error: JAVA_HOME is not defined correctly.
We cannot execute /usr/lib/jvm/java-7-oracle/bin/java
The command "./mvnw --toolchains=./.travis-toolchains.xml install
-DskipTests=true -Dmaven.javadoc.skip=true -B -V" failed and exited with 1
during .
```
Definitely not related to changes I did.
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