commons-math version 2.2-1 failed to build with openjdk-7

During a rebuild test on precise with default-jdk switched to openjdk-7, a build failure was detected for commons-math version 2.2-1.

See attached log for full build failure details.

This log snippet might also be of interest:

    [javac] /«PKGBUILDDIR»/src/test/java/org/apache/commons/math/stat/descriptive/moment/StandardDeviationTest.java:26: error: unmappable character for encoding ASCII
    [javac] * @version $Revision: 990655 $ $Date: 2010-08-29 23:49:40 +0200 (dim. 29 ao??t 2010) $
    [javac] ^
    [javac] /«PKGBUILDDIR»/src/test/java/org/apache/commons/math/stat/descriptive/moment/StandardDeviationTest.java:26: error: unmappable character for encoding ASCII
    [javac] * @version $Revision: 990655 $ $Date: 2010-08-29 23:49:40 +0200 (dim. 29 ao??t 2010) $
    [javac] ^
    [javac] /«PKGBUILDDIR»/src/test/java/org/apache/commons/math/transform/FastCosineTransformerTest.java:29: error: unmappable character for encoding ASCII
    [javac] * @version $Revision: 1070725 $ $Date: 2011-02-15 02:31:12 +0100 (mar. 15 f??vr. 2011) $
    [javac] ^
    [javac] /«PKGBUILDDIR»/src/test/java/org/apache/commons/math/transform/FastCosineTransformerTest.java:29: error: unmappable character for encoding ASCII
    [javac] * @version $Revision: 1070725 $ $Date: 2011-02-15 02:31:12 +0100 (mar. 15 f??vr. 2011) $
    [javac] ^
    [javac] /«PKGBUILDDIR»/src/test/java/org/apache/commons/math/transform/FastFourierTransformerTest.java:30: error: unmappable character for encoding ASCII
    [javac] * @version $Revision: 1070725 $ $Date: 2011-02-15 02:31:12 +0100 (mar. 15 f??vr. 2011) $
    [javac] ^
    [javac] /«PKGBUILDDIR»/src/test/java/org/apache/commons/math/transform/FastFourierTransformerTest.java:30: error: unmappable character for encoding ASCII
    [javac] * @version $Revision: 1070725 $ $Date: 2011-02-15 02:31:12 +0100 (mar. 15 f??vr. 2011) $
    [javac] ^
    [javac] /«PKGBUILDDIR»/src/test/java/org/apache/commons/math/transform/FastSineTransformerTest.java:29: error: unmappable character for encoding ASCII
    [javac] * @version $Revision: 1070725 $ $Date: 2011-02-15 02:31:12 +0100 (mar. 15 f??vr. 2011) $
    [javac] ^
    [javac] /«PKGBUILDDIR»/src/test/java/org/apache/commons/math/transform/FastSineTransformerTest.java:29: error: unmappable character for encoding ASCII
    [javac] * @version $Revision: 1070725 $ $Date: 2011-02-15 02:31:12 +0100 (mar. 15 f??vr. 2011) $
    [javac] ^
    [javac] /«PKGBUILDDIR»/src/test/java/org/apache/commons/math/util/DefaultTransformerTest.java:28: error: unmappable character for encoding ASCII
    [javac] * @version $Revision: 1073658 $ $Date: 2011-02-23 10:45:42 +0100 (mer. 23 f??vr. 2011) $
    [javac] ^
    [javac] /«PKGBUILDDIR»/src/test/java/org/apache/commons/math/util/DefaultTransformerTest.java:28: error: unmappable character for encoding ASCII
    [javac] * @version $Revision: 1073658 $ $Date: 2011-02-23 10:45:42 +0100 (mer. 23 f??vr. 2011) $
    [javac] ^
    [javac] /«PKGBUILDDIR»/src/test/java/org/apache/commons/math/util/ResizableDoubleArrayTest.java:25: error: unmappable character for encoding ASCII
    [javac] * @version $Revision: 1053282 $ $Date: 2010-12-28 10:03:40 +0100 (mar. 28 d??c. 2010) $
    [javac] ^
    [javac] /«PKGBUILDDIR»/src/test/java/org/apache/commons/math/util/ResizableDoubleArrayTest.java:25: error: unmappable character for encoding ASCII
    [javac] * @version $Revision: 1053282 $ $Date: 2010-12-28 10:03:40 +0100 (mar. 28 d??c. 2010) $
    [javac] ^
    [javac] 100 errors

BUILD FAILED
/«PKGBUILDDIR»/build.xml:177: Compile failed; see the compiler error output for details.

Total time: 3 seconds
make: *** [debian/stamp-ant-check] Error 1
dpkg-buildpackage: error: debian/rules build gave error exit status 2
────────────────────────────────────────────────────────────────────────────────
Build finished at 20111110-0708

Finished
────────

E: Build failure (dpkg-buildpackage died)