michael-o commented on pull request #77:
URL: https://github.com/apache/maven-resolver/pull/77#issuecomment-822059795


   @cstamas Ran the first tests with:
   ```
   for run in {1..5}; do echo "Testing run #$run"; rm -rf repo; 
~/apache-maven-4.0.0-alpha-1-SNAPSHOT/bin/mvn clean install -Prun-its,embedded 
-Dmaven.repo.local=`pwd`/repo -B -Daether.syncContext.impl=named -l 
rwlock-local-log-$run ; done
   
   for run in {1..5}; do echo "Testing run #$run"; rm -rf repo; 
~/apache-maven-4.0.0-alpha-1-SNAPSHOT/bin/mvn clean install -Prun-its,embedded 
-Dmaven.repo.local=`pwd`/repo -B -Daether.syncContext.impl=nolock -l 
nolock-log-$run ; done
   ```
   
   Had to add more logging and noticed this:
   ```
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Need 31 
write lock(s) for [artifact:commons-io:commons-io:2.5, 
artifact:org.apache.commons:commons-compress:1.14, 
artifact:org.apache.maven.plugins:maven-jar-plugin:3.1.0, 
artifact:org.apache.maven.shared:maven-shared-utils:3.2.0, 
artifact:org.apache.maven:maven-aether-provider:3.0, 
artifact:org.apache.maven:maven-archiver:3.2.0, 
artifact:org.apache.maven:maven-artifact:3.0, 
artifact:org.apache.maven:maven-core:3.0, 
artifact:org.apache.maven:maven-model-builder:3.0, 
artifact:org.apache.maven:maven-model:3.0, 
artifact:org.apache.maven:maven-plugin-api:3.0, 
artifact:org.apache.maven:maven-repository-metadata:3.0, 
artifact:org.apache.maven:maven-settings-builder:3.0, 
artifact:org.apache.maven:maven-settings:3.0, 
artifact:org.codehaus.plexus:plexus-archiver:3.5, 
artifact:org.codehaus.plexus:plexus-classworlds:2.2.3, 
artifact:org.codehaus.plexus:plexus-component-annotations:1.7.1, 
artifact:org.codehaus.plexus:plexus-interp
 olation:1.14, artifact:org.codehaus.plexus:plexus-io:3.0.0, 
artifact:org.codehaus.plexus:plexus-utils:3.1.0, 
artifact:org.iq80.snappy:snappy:0.4, 
artifact:org.sonatype.aether:aether-api:1.7, 
artifact:org.sonatype.aether:aether-impl:1.7, 
artifact:org.sonatype.aether:aether-spi:1.7, 
artifact:org.sonatype.aether:aether-util:1.7, 
artifact:org.sonatype.plexus:plexus-cipher:1.4, 
artifact:org.sonatype.plexus:plexus-sec-dispatcher:1.3, 
artifact:org.sonatype.sisu:sisu-guice:2.1.7, 
artifact:org.sonatype.sisu:sisu-inject-bean:1.4.2, 
artifact:org.sonatype.sisu:sisu-inject-plexus:1.4.2, 
artifact:org.tukaani:xz:1.6]
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:commons-io:commons-io:2.5'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.apache.commons:commons-compress:1.14'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.apache.maven.plugins:maven-jar-plugin:3.1.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.apache.maven.shared:maven-shared-utils:3.2.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.apache.maven:maven-aether-provider:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.apache.maven:maven-archiver:3.2.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.apache.maven:maven-artifact:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.apache.maven:maven-core:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.apache.maven:maven-model-builder:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.apache.maven:maven-model:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.apache.maven:maven-plugin-api:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.apache.maven:maven-repository-metadata:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.apache.maven:maven-settings-builder:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.apache.maven:maven-settings:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.codehaus.plexus:plexus-archiver:3.5'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.codehaus.plexus:plexus-classworlds:2.2.3'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.codehaus.plexus:plexus-component-annotations:1.7.1'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.codehaus.plexus:plexus-interpolation:1.14'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.codehaus.plexus:plexus-io:3.0.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.codehaus.plexus:plexus-utils:3.1.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.iq80.snappy:snappy:0.4'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.sonatype.aether:aether-api:1.7'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.sonatype.aether:aether-impl:1.7'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.sonatype.aether:aether-spi:1.7'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.sonatype.aether:aether-util:1.7'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.sonatype.plexus:plexus-cipher:1.4'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.sonatype.plexus:plexus-sec-dispatcher:1.3'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.sonatype.sisu:sisu-guice:2.1.7'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.sonatype.sisu:sisu-inject-bean:1.4.2'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.sonatype.sisu:sisu-inject-plexus:1.4.2'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Acquiring 
write lock for 'artifact:org.tukaani:xz:1.6'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Total locks 
acquired: 31
   [main] [DEBUG] DefaultTransporterProvider - Using transporter 
WagonTransporter with priority -1.0 for 
http://bsd1srv.fritz.box:8081/nexus/content/repositories/central/
   [main] [DEBUG] DefaultRepositoryConnectorProvider - Using connector 
BasicRepositoryConnector with priority 0.0 for 
http://bsd1srv.fritz.box:8081/nexus/content/repositories/central/
   [BasicRepositoryConnector-bsd1srv.fritz.box-12-0] [INFO] 
Slf4jMavenTransferListener - Downloading from nexus: 
http://bsd1srv.fritz.box:8081/nexus/content/repositories/central/org/apache/maven/maven-archiver/3.2.0/maven-archiver-3.2.0.jar
   [BasicRepositoryConnector-bsd1srv.fritz.box-12-1] [INFO] 
Slf4jMavenTransferListener - Downloading from nexus: 
http://bsd1srv.fritz.box:8081/nexus/content/repositories/central/org/apache/maven/shared/maven-shared-utils/3.2.0/maven-shared-utils-3.2.0.jar
   [BasicRepositoryConnector-bsd1srv.fritz.box-12-3] [INFO] 
Slf4jMavenTransferListener - Downloading from nexus: 
http://bsd1srv.fritz.box:8081/nexus/content/repositories/central/org/codehaus/plexus/plexus-io/3.0.0/plexus-io-3.0.0.jar
   [BasicRepositoryConnector-bsd1srv.fritz.box-12-4] [INFO] 
Slf4jMavenTransferListener - Downloading from nexus: 
http://bsd1srv.fritz.box:8081/nexus/content/repositories/central/org/apache/commons/commons-compress/1.14/commons-compress-1.14.jar
   [BasicRepositoryConnector-bsd1srv.fritz.box-12-3] [INFO] 
Slf4jMavenTransferListener - Downloaded from nexus: 
http://bsd1srv.fritz.box:8081/nexus/content/repositories/central/org/codehaus/plexus/plexus-io/3.0.0/plexus-io-3.0.0.jar
 (74 kB at 11 MB/s)
   [BasicRepositoryConnector-bsd1srv.fritz.box-12-3] [INFO] 
Slf4jMavenTransferListener - Downloading from nexus: 
http://bsd1srv.fritz.box:8081/nexus/content/repositories/central/org/tukaani/xz/1.6/xz-1.6.jar
   [BasicRepositoryConnector-bsd1srv.fritz.box-12-2] [INFO] 
Slf4jMavenTransferListener - Downloading from nexus: 
http://bsd1srv.fritz.box:8081/nexus/content/repositories/central/org/codehaus/plexus/plexus-archiver/3.5/plexus-archiver-3.5.jar
   [BasicRepositoryConnector-bsd1srv.fritz.box-12-4] [INFO] 
Slf4jMavenTransferListener - Downloaded from nexus: 
http://bsd1srv.fritz.box:8081/nexus/content/repositories/central/org/apache/commons/commons-compress/1.14/commons-compress-1.14.jar
 (530 kB at 18 MB/s)
   [BasicRepositoryConnector-bsd1srv.fritz.box-12-3] [INFO] 
Slf4jMavenTransferListener - Downloaded from nexus: 
http://bsd1srv.fritz.box:8081/nexus/content/repositories/central/org/tukaani/xz/1.6/xz-1.6.jar
 (103 kB at 3.4 MB/s)
   [BasicRepositoryConnector-bsd1srv.fritz.box-12-0] [INFO] 
Slf4jMavenTransferListener - Downloaded from nexus: 
http://bsd1srv.fritz.box:8081/nexus/content/repositories/central/org/apache/maven/maven-archiver/3.2.0/maven-archiver-3.2.0.jar
 (24 kB at 741 kB/s)
   [BasicRepositoryConnector-bsd1srv.fritz.box-12-1] [INFO] 
Slf4jMavenTransferListener - Downloaded from nexus: 
http://bsd1srv.fritz.box:8081/nexus/content/repositories/central/org/apache/maven/shared/maven-shared-utils/3.2.0/maven-shared-utils-3.2.0.jar
 (165 kB at 5.2 MB/s)
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.sisu:sisu-inject-plexus:1.4.2 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.plexus:plexus-cipher:1.4 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.plexus:plexus-sec-dispatcher:1.3 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven.plugins:maven-jar-plugin:3.1.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-archiver:3.2.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven.shared:maven-shared-utils:3.2.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.codehaus.plexus:plexus-archiver:3.5 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.codehaus.plexus:plexus-io:3.0.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.commons:commons-compress:1.14 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.tukaani:xz:1.6 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven.plugins:maven-jar-plugin:3.1.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven.plugins:maven-jar-plugin:3.1.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:commons-io:commons-io:2.5 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-aether-provider:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-artifact:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-core:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-model-builder:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-model:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-plugin-api:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-repository-metadata:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-settings-builder:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-settings:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.codehaus.plexus:plexus-classworlds:2.2.3 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.codehaus.plexus:plexus-component-annotations:1.7.1 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.codehaus.plexus:plexus-utils:3.1.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.aether:aether-api:1.7 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.aether:aether-impl:1.7 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.aether:aether-spi:1.7 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.aether:aether-util:1.7 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.plexus:plexus-cipher:1.4 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.plexus:plexus-sec-dispatcher:1.3 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.sisu:sisu-guice:2.1.7 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.sisu:sisu-inject-bean:1.4.2 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.sisu:sisu-inject-plexus:1.4.2 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:commons-io:commons-io:2.5 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-aether-provider:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-artifact:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-core:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-model-builder:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-model:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-plugin-api:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-repository-metadata:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-settings-builder:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.apache.maven:maven-settings:3.0 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.codehaus.plexus:plexus-classworlds:2.2.3 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.codehaus.plexus:plexus-interpolation:1.14 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.aether:aether-api:1.7 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.aether:aether-impl:1.7 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.aether:aether-spi:1.7 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.aether:aether-util:1.7 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.plexus:plexus-cipher:1.4 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.plexus:plexus-sec-dispatcher:1.3 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.sisu:sisu-guice:2.1.7 references=1
   [Finalizer] [WARNING] ReadWriteLockNamedLock - NamedLock leak: 
artifact:org.sonatype.sisu:sisu-inject-bean:1.4.2 references=1
   [BasicRepositoryConnector-bsd1srv.fritz.box-12-2] [INFO] 
Slf4jMavenTransferListener - Downloaded from nexus: 
http://bsd1srv.fritz.box:8081/nexus/content/repositories/central/org/codehaus/plexus/plexus-archiver/3.5/plexus-archiver-3.5.jar
 (187 kB at 4.8 MB/s)
   [main] [DEBUG] TrackingFileManager - Writing tracking file 
/usr/home/mosipov/var/Projekte/maven-integration-testing/repo/org/apache/maven/maven-archiver/3.2.0/_remote.repositories
   [main] [DEBUG] TrackingFileManager - Writing tracking file 
/usr/home/mosipov/var/Projekte/maven-integration-testing/repo/org/apache/maven/maven-archiver/3.2.0/maven-archiver-3.2.0.jar.lastUpdated
   [main] [DEBUG] TrackingFileManager - Writing tracking file 
/usr/home/mosipov/var/Projekte/maven-integration-testing/repo/org/apache/maven/shared/maven-shared-utils/3.2.0/_remote.repositories
   [main] [DEBUG] TrackingFileManager - Writing tracking file 
/usr/home/mosipov/var/Projekte/maven-integration-testing/repo/org/apache/maven/shared/maven-shared-utils/3.2.0/maven-shared-utils-3.2.0.jar.lastUpdated
   [main] [DEBUG] TrackingFileManager - Writing tracking file 
/usr/home/mosipov/var/Projekte/maven-integration-testing/repo/org/codehaus/plexus/plexus-archiver/3.5/_remote.repositories
   [main] [DEBUG] TrackingFileManager - Writing tracking file 
/usr/home/mosipov/var/Projekte/maven-integration-testing/repo/org/codehaus/plexus/plexus-archiver/3.5/plexus-archiver-3.5.jar.lastUpdated
   [main] [DEBUG] TrackingFileManager - Writing tracking file 
/usr/home/mosipov/var/Projekte/maven-integration-testing/repo/org/codehaus/plexus/plexus-io/3.0.0/_remote.repositories
   [main] [DEBUG] TrackingFileManager - Writing tracking file 
/usr/home/mosipov/var/Projekte/maven-integration-testing/repo/org/codehaus/plexus/plexus-io/3.0.0/plexus-io-3.0.0.jar.lastUpdated
   [main] [DEBUG] TrackingFileManager - Writing tracking file 
/usr/home/mosipov/var/Projekte/maven-integration-testing/repo/org/apache/commons/commons-compress/1.14/_remote.repositories
   [main] [DEBUG] TrackingFileManager - Writing tracking file 
/usr/home/mosipov/var/Projekte/maven-integration-testing/repo/org/apache/commons/commons-compress/1.14/commons-compress-1.14.jar.lastUpdated
   [main] [DEBUG] TrackingFileManager - Writing tracking file 
/usr/home/mosipov/var/Projekte/maven-integration-testing/repo/org/tukaani/xz/1.6/_remote.repositories
   [main] [DEBUG] TrackingFileManager - Writing tracking file 
/usr/home/mosipov/var/Projekte/maven-integration-testing/repo/org/tukaani/xz/1.6/xz-1.6.jar.lastUpdated
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.tukaani:xz:1.6'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.sonatype.sisu:sisu-inject-plexus:1.4.2'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.sonatype.sisu:sisu-inject-bean:1.4.2'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.sonatype.sisu:sisu-guice:2.1.7'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.sonatype.plexus:plexus-sec-dispatcher:1.3'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.sonatype.plexus:plexus-cipher:1.4'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.sonatype.aether:aether-util:1.7'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.sonatype.aether:aether-spi:1.7'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.sonatype.aether:aether-impl:1.7'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.sonatype.aether:aether-api:1.7'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.iq80.snappy:snappy:0.4'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.codehaus.plexus:plexus-utils:3.1.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.codehaus.plexus:plexus-io:3.0.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.codehaus.plexus:plexus-interpolation:1.14'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.codehaus.plexus:plexus-component-annotations:1.7.1'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.codehaus.plexus:plexus-classworlds:2.2.3'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.codehaus.plexus:plexus-archiver:3.5'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.apache.maven:maven-settings:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.apache.maven:maven-settings-builder:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.apache.maven:maven-repository-metadata:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.apache.maven:maven-plugin-api:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.apache.maven:maven-model:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.apache.maven:maven-model-builder:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.apache.maven:maven-core:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.apache.maven:maven-artifact:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.apache.maven:maven-archiver:3.2.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.apache.maven:maven-aether-provider:3.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.apache.maven.shared:maven-shared-utils:3.2.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.apache.maven.plugins:maven-jar-plugin:3.1.0'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:org.apache.commons:commons-compress:1.14'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Releasing 
write lock for 'artifact:commons-io:commons-io:2.5'
   [main] [TRACE] NamedLockFactoryAdapter$AdaptedLockSyncContext - Total locks 
released: 31
   ```
   
   Can you tell whether `finalize()` is plaing tricks with us and showing false 
positives?
   
   I will continue testing...


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