[tor-bugs] #31194 [Metrics/Library]: Upgrade metrics-lib to Debian buster libraries

[Tor Bug Tracker & Wiki]

#31194: Upgrade metrics-lib to Debian buster libraries
-----------------------------+------------------------------
 Reporter:  karsten          |          Owner:  metrics-team
     Type:  enhancement      |         Status:  merge_ready
 Priority:  Medium           |      Milestone:
Component:  Metrics/Library  |        Version:
 Severity:  Normal           |     Resolution:
 Keywords:                   |  Actual Points:
Parent ID:  #31193           |         Points:
 Reviewer:  irl              |        Sponsor:
-----------------------------+------------------------------

Comment (by irl):

 You're right, it is `/usr/share/java/cobertura-2.1.1.jar` but for some
 reason I didn't have that file in my system. An apt remove and apt install
 later and it was back, and now `ant coverage` does something that looks
 more like expected.

 {{{
 [cobertura-report] Cobertura 2.1.1 - GNU GPL License (NO WARRANTY) - See
 COPYRIGHT file
 [cobertura-report] Exception in thread "main"
 java.lang.UnsupportedClassVersionError:
 org/apache/oro/text/regex/MalformedPatternException has been compiled by a
 more recent version of the Java Runtime (class file version 54.0), this
 version of the Java Runtime only recognizes class file versions up to 52.0
 [cobertura-report]      at java.lang.ClassLoader.defineClass1(Native
 Method)
 [cobertura-report]      at
 java.lang.ClassLoader.defineClass(ClassLoader.java:763)
 [cobertura-report]      at
 java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
 [cobertura-report]      at
 java.net.URLClassLoader.defineClass(URLClassLoader.java:468)
 [cobertura-report]      at
 java.net.URLClassLoader.access$100(URLClassLoader.java:74)
 [cobertura-report]      at
 java.net.URLClassLoader$1.run(URLClassLoader.java:369)
 [cobertura-report]      at
 java.net.URLClassLoader$1.run(URLClassLoader.java:363)
 [cobertura-report]      at
 java.security.AccessController.doPrivileged(Native Method)
 [cobertura-report]      at
 java.net.URLClassLoader.findClass(URLClassLoader.java:362)
 [cobertura-report]      at
 java.lang.ClassLoader.loadClass(ClassLoader.java:424)
 [cobertura-report]      at
 sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
 [cobertura-report]      at
 java.lang.ClassLoader.loadClass(ClassLoader.java:357)
 [cobertura-report]      at
 net.sourceforge.cobertura.dsl.Cobertura.<init>(Cobertura.java:61)
 [cobertura-report]      at
 net.sourceforge.cobertura.reporting.ReportMain.parseArgumentsAndReport(ReportMain.java:91)
 [cobertura-report]      at
 net.sourceforge.cobertura.reporting.ReportMain.generateReport(ReportMain.java:141)
 [cobertura-report]      at
 net.sourceforge.cobertura.reporting.ReportMain.main(ReportMain.java:151)
 }}}

 ...but it fails

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31194#comment:4>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online