maven compile error

[petyaracz]

After cloning repository, mvn package -DskipTests returns

[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] error: Source option 6 is no longer supported. Use 7 or later.
[ERROR] error: Target option 6 is no longer supported. Use 7 or later.

specs:

java version "13.0.2" 2020-01-14
Java(TM) SE Runtime Environment (build 13.0.2+8)
Java HotSpot(TM) 64-Bit Server VM (build 13.0.2+8, mixed mode, sharing)

Maven home: /opt/apache-maven
Java version: 13.0.2, vendor: Oracle Corporation, runtime: /Library/Java/JavaVirtualMachines/jdk-13.0.2.jdk/Contents/Home
Default locale: en_AU, platform encoding: UTF-8
OS name: "mac os x", version: "10.15.6", arch: "x86_64", family: "mac"

ProductName: Mac OS X
ProductVersion: 10.15.6
BuildVersion: 19G73

I don't know whether the issue is with my machine or the repo (or both etc).

[dlazesz]

The source code is rather old and not maintained. It compiles well on Debian stable an OpenJDK 11.

In your case increasing the source and target versions may help, but other errors could be introduced due to source code incompatibilities.