Bug#893294: libtruth-java FTBFS with openjdk-9

[Adrian Bunk]

Source: libtruth-java
Version: 0.7.0-2
Severity: serious
Tags: buster sid

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/libtruth-java.html

...
   debian/rules override_dh_auto_build
make[1]: Entering directory '/build/1st/libtruth-java-0.7.0'
jh_build --javacopts="-source 1.5 -target 1.5" libtruth-0.7.0.jar src 
find src -name *.java -and -type f -print0 | xargs -s 512000 -0 /usr/lib/jvm/default-java/bin/javac -g -cp /usr/share/java/junit4.jar:debian/_jh_build.libtruth-0.7.0 -d debian/_jh_build.libtruth-0.7.0 -encoding ISO8859-1 -source 1.5 -target 1.5
warning: [options] bootstrap class path not set in conjunction with -source 1.5
error: Source option 1.5 is no longer supported. Use 1.6 or later.
error: Target option 1.5 is no longer supported. Use 1.6 or later.
make[1]: *** [debian/rules:10: override_dh_auto_build] Error 123