Bug#1057533: qpid-proton-j-extensions: FTBFS with default Java 21

[Vladimir Petko]

Source: qpid-proton-j-extensions
Version: 1.2.4-1
Severity: important
Tags: ftbfs
User: debian-java at lists.debian.org
Usertags: default-java21

Dear Maintainers,

The package qpid-proton-j-extensions ftbfs with default Java 21.
The relevant part of the build log:
---------------
[WARNING] COMPILATION WARNING :
[INFO] -------------------------------------------------------------
[WARNING] source value 8 is obsolete and will be removed in a future release
[WARNING] target value 8 is obsolete and will be removed in a future release
[WARNING] To suppress warnings about obsolete options, use -Xlint:-options.
[INFO] 3 warnings
[INFO] -------------------------------------------------------------
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] warnings found and -Werror specified
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  1.282 s
[INFO] Finished at: 2023-12-04T11:02:51Z
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.10.1:compile (base-compile) on project qpid-proton-j-extensions: Compilation failure
[ERROR] warnings found and -Werror specified
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
---------------


-- System Information:
Debian Release: trixie/sid
  APT prefers mantic-updates
  APT policy: (500, 'mantic-updates'), (500, 'mantic-security'), (500, 'mantic')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.5.0-13-generic (SMP w/32 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled