With Jenkins 1.455 the plugin was successfully copying a workspace that contained a Mercurial repository. It appears that since JENKINS-9118 was resolved and Ant was upgraded to 1.8.3 the default excludes now cover Mercurial's repository files, and therefore the files are not being copied. This is similar to JENKINS-13888 for the Clone Workspace plugin, and may similarly require a change to Jenkins core.

Pull request with failing test that demonstrates this issue is here: https://github.com/jenkinsci/copyartifact-plugin/pull/12

This is preventing us from upgrading Jenkins past version 1.455 (March 2012)

sorry, haven't worked on jenkins in a couple years

Apologies if this is the wrong person to assign to - I was going by recent commits to this plugin.

I did fix one bug in the plugin, but I do not consider myself a maintainer of it.

Another attempt at assigning based on commit history. Hoping to find someone that can fix this or at least mentor me to fix it.

Same here, sorry. I fixed a few bugs, but I'm not the maintainer.

I'll try to have a look at it, but can't promise anything.
Your best bet is trying to fix it yourself.

I was afraid you'd say that Fred! I would appreciate you looking at this and giving me any pointers. I have already attempted to fix it myself, but so far had little success.

https://github.com/jenkinsci/copyartifact-plugin/pull/42

Fix for this issue should be introduced with fix for JENKINS-18662.

Code changed in jenkins
User: Dave Hunt
Path:
pom.xml
src/test/java/hudson/plugins/copyartifact/CopyArtifactTest.java
http://jenkins-ci.org/commit/copyartifact-plugin/ecfa6f42aaf6c1bc40db7cd93703c733d152fed7
Log:
Failing test for JENKINS-14900.

Code changed in jenkins
User: ikedam
Path:
src/test/java/hudson/plugins/copyartifact/CopyArtifactTest.java
http://jenkins-ci.org/commit/copyartifact-plugin/c04a128b5e0642b9519c8949024439d146750ad9
Log:
Merge pull request #12 from davehunt/JENKINS-14900-TEST

Failing test for JENKINS-14900.

Conflicts:
pom.xml

Code changed in jenkins
User: ikedam
Path:
src/test/java/hudson/plugins/copyartifact/CopyArtifactTest.java
http://jenkins-ci.org/commit/copyartifact-plugin/1f7f665a1840c56c622cd7533726a41532cdd5b1
Log:
JENKINS-14900 Added a test to reproduce JENKINS-14900 when flatten=true.

Code changed in jenkins
User: ikedam
Path:
src/main/java/hudson/plugins/copyartifact/CopyArtifact.java
src/main/java/hudson/plugins/copyartifact/FingerprintingCopyMethod.java
http://jenkins-ci.org/commit/copyartifact-plugin/609ca2e0e09db223961ae5faae74bb06e85eb4a0
Log:
[FIXED JENKINS-14900] Disabled ant default excludes.

Code changed in jenkins
User: ikedam
Path:
src/main/java/hudson/plugins/copyartifact/Copier.java
src/main/java/hudson/plugins/copyartifact/CopyArtifact.java
src/main/java/hudson/plugins/copyartifact/FilePathCopyMethod.java
src/main/java/hudson/plugins/copyartifact/FingerprintingCopyMethod.java
src/main/resources/hudson/plugins/copyartifact/CopyArtifact/config.jelly
src/main/resources/hudson/plugins/copyartifact/CopyArtifact/config_ja.properties
src/main/resources/hudson/plugins/copyartifact/CopyArtifact/help-excludes.html
src/main/resources/hudson/plugins/copyartifact/CopyArtifact/help-excludes_ja.html
src/main/resources/hudson/plugins/copyartifact/CopyArtifact/help-filter.html
src/main/resources/hudson/plugins/copyartifact/CopyArtifact/help-filter_de.html
src/main/resources/hudson/plugins/copyartifact/CopyArtifact/help-filter_ja.html
src/test/java/hudson/plugins/copyartifact/CopyArtifactTest.java
http://jenkins-ci.org/commit/copyartifact-plugin/13282b4c62a11477ad6451030bd692560e858304
Log:
Merge pull request #42 from ikedam/feature/JENKINS-14900_Excludes

JENKINS-14900 JENKINS-18662 JENKINS-23444 Fixes for filter.

Compare: https://github.com/jenkinsci/copyartifact-plugin/compare/e894206e94ca...13282b4c62a1

Released the fix in copyartifact 1.31.