$ mvn clean verify -B --no-transfer-progress --settings /home/ghrunner/actions-runner/_work/vaadin-ecosystem-build/vaadin-ecosystem-build/settings.xml

java 25-tem is already installed.

Using java version 25-tem in this shell.
[INFO] Scanning for projects...
[INFO] 
[INFO] ---------< org.vaadin.addons.flowingcode:year-month-calendar >----------
[INFO] Building Year Month Calendar Add-on 4.6.3-SNAPSHOT
[INFO]   from pom.xml
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- clean:3.2.0:clean (default-clean) @ year-month-calendar ---
[INFO] Deleting /home/ghrunner/actions-runner/_work/vaadin-ecosystem-build/vaadin-ecosystem-build/work/Year-Month Calendar Add-on/target
[INFO] 
[INFO] --- resources:3.3.1:resources (default-resources) @ year-month-calendar ---
[INFO] Copying 11 resources from src/main/resources to target/classes
[INFO] 
[INFO] --- vaadin:24.9.5:prepare-frontend (default) @ year-month-calendar ---
[INFO] Reflections took 876 ms to scan 143 urls, producing 5347 keys and 23852 values
[INFO] Visited 102 classes. Took 130 ms.
[INFO] Copying frontend resources from jar files ...
[INFO] Visited 143 resources. Took 103 ms.
[INFO] 
[INFO] --- compiler:3.13.0:compile (default-compile) @ year-month-calendar ---
[INFO] Recompiling the module because of changed source code.
[INFO] Compiling 8 source files with javac [debug target 17] to target/classes
[WARNING] location of system modules is not set in conjunction with -source 17
  not setting the location of system modules may lead to class files that cannot run on JDK 17
    --release 17 is recommended instead of -source 17 -target 17 because it sets the location of system modules automatically
[INFO] 
[INFO] --- resources:3.3.1:testResources (default-testResources) @ year-month-calendar ---
[INFO] Copying 2 resources from src/test/resources to target/test-classes
[INFO] 
[INFO] --- compiler:3.13.0:testCompile (default-testCompile) @ year-month-calendar ---
[INFO] Recompiling the module because of changed dependency.
[INFO] Compiling 16 source files with javac [debug target 17] to target/test-classes
[WARNING] location of system modules is not set in conjunction with -source 17
  not setting the location of system modules may lead to class files that cannot run on JDK 17
    --release 17 is recommended instead of -source 17 -target 17 because it sets the location of system modules automatically
[INFO] /home/ghrunner/actions-runner/_work/vaadin-ecosystem-build/vaadin-ecosystem-build/work/Year-Month Calendar Add-on/src/test/java/com/flowingcode/addons/ycalendar/LocaleSelector.java: Some input files use or override a deprecated API.
[INFO] /home/ghrunner/actions-runner/_work/vaadin-ecosystem-build/vaadin-ecosystem-build/work/Year-Month Calendar Add-on/src/test/java/com/flowingcode/addons/ycalendar/LocaleSelector.java: Recompile with -Xlint:deprecation for details.
[INFO] 
[INFO] --- surefire:2.22.1:test (default-test) @ year-month-calendar ---
[INFO] 
[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
[INFO] Running com.flowingcode.addons.ycalendar.test.SerializationTest
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.161 s - in com.flowingcode.addons.ycalendar.test.SerializationTest
[INFO] 
[INFO] Results:
[INFO] 
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
[INFO] 
[INFO] 
[INFO] --- jar:3.1.2:jar (default-jar) @ year-month-calendar ---
[INFO] Building jar: /home/ghrunner/actions-runner/_work/vaadin-ecosystem-build/vaadin-ecosystem-build/work/Year-Month Calendar Add-on/target/year-month-calendar-4.6.3-SNAPSHOT.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  6.456 s
[INFO] Finished at: 2026-07-27T16:59:47Z
[INFO] ------------------------------------------------------------------------