Bug#893179: icu4j-49 FTBFS with openjdk-9

[Adrian Bunk]

Source: icu4j-49
Version: 49.1-2
Severity: serious
Tags: buster sid

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/icu4j-49.html

...
dh_auto_clean
	ant clean
Buildfile: /build/1st/icu4j-49-49.1/build.xml

BUILD FAILED
/build/1st/icu4j-49-49.1/build.xml:57: The JDK version is too old or unknown.

Total time: 0 seconds
dh_auto_clean: ant clean returned exit code 1
make[1]: *** [debian/rules:19: override_dh_auto_clean] Error 2