Error in the release script

When running the release script I get a warning and a error when uploading the javadocs:

[mircea:~/github/u_ispn ]$ bin/release.py 5.2.0.Alpha3 master
[INFO] Releasing Infinispan version 5.2.0.Alpha3 from branch 'master'
Are you sure you want to continue? [N]: y
[INFO] OK, releasing! Please stand by ...
[INFO] Step 1: Tagging master in git as 5.2.0.Alpha3
Already on 'master'
Switched to a new branch '__temp_D068'
[INFO] Step 1: Complete
[INFO] Step 2: Updating version number in source files
[INFO] Step 2: Complete
[INFO] Step 3: Build and test in Maven2
[ComponentMetadataPersister] Starting component metadata generation. Scanning classes in /Users/mircea/github/u_ispn/core/target/classes
[ComponentMetadataPersister] Persisted metadata in /Users/mircea/github/u_ispn/core/src/main/resources/infinispan-core-component-metadata.dat
[ComponentMetadataPersister] 209 components and 49 factories analyzed and persisted in 1.54 seconds.

[ComponentMetadataPersister] Starting component metadata generation. Scanning classes in /Users/mircea/github/u_ispn/server/core/target/classes
[ComponentMetadataPersister] Persisted metadata in /Users/mircea/github/u_ispn/server/core/src/main/resources/infinispan-server-core-component-metadata.dat
[ComponentMetadataPersister] 2 components and 0 factories analyzed and persisted in 128 milliseconds.

[ComponentMetadataPersister] Starting component metadata generation. Scanning classes in /Users/mircea/github/u_ispn/query/target/classes
[ComponentMetadataPersister] Persisted metadata in /Users/mircea/github/u_ispn/query/src/main/resources/infinispan-query-component-metadata.dat
[ComponentMetadataPersister] 3 components and 0 factories analyzed and persisted in 95 milliseconds.

ANTLR Parser Generator Version 3.4
org/infinispan/cli/interpreter/IspnQL.g
[ComponentMetadataPersister] Starting component metadata generation. Scanning classes in /Users/mircea/github/u_ispn/cli/cli-server/target/classes
[ComponentMetadataPersister] Persisted metadata in /Users/mircea/github/u_ispn/cli/cli-server/src/main/resources/infinispan-cli-server-component-metadata.dat
[ComponentMetadataPersister] 1 components and 0 factories analyzed and persisted in 103 milliseconds.

xsddoc starting.
xsddoc finished.
[ComponentMetadataPersister] Starting component metadata generation. Scanning classes in /Users/mircea/github/u_ispn/core/target/classes
[ComponentMetadataPersister] Persisted metadata in /Users/mircea/github/u_ispn/core/src/main/resources/infinispan-core-component-metadata.dat
[ComponentMetadataPersister] 209 components and 49 factories analyzed and persisted in 1.21 seconds.

[ComponentMetadataPersister] Starting component metadata generation. Scanning classes in /Users/mircea/github/u_ispn/server/core/target/classes
[ComponentMetadataPersister] Persisted metadata in /Users/mircea/github/u_ispn/server/core/src/main/resources/infinispan-server-core-component-metadata.dat
[ComponentMetadataPersister] 2 components and 0 factories analyzed and persisted in 159 milliseconds.

[ComponentMetadataPersister] Starting component metadata generation. Scanning classes in /Users/mircea/github/u_ispn/query/target/classes
[ComponentMetadataPersister] Persisted metadata in /Users/mircea/github/u_ispn/query/src/main/resources/infinispan-query-component-metadata.dat
[ComponentMetadataPersister] 3 components and 0 factories analyzed and persisted in 93 milliseconds.

ANTLR Parser Generator Version 3.4
Grammar /Users/mircea/github/u_ispn/cli/cli-server/src/main/antlr3/org/infinispan/cli/interpreter/IspnQL.g is up to date - build skipped
[ComponentMetadataPersister] Starting component metadata generation. Scanning classes in /Users/mircea/github/u_ispn/cli/cli-server/target/classes
[ComponentMetadataPersister] Persisted metadata in /Users/mircea/github/u_ispn/cli/cli-server/src/main/resources/infinispan-cli-server-component-metadata.dat
[ComponentMetadataPersister] 1 components and 0 factories analyzed and persisted in 134 milliseconds.

> isMarkerOlder:
artifact1 = /Users/mircea/.m2/repository/javax/cache/cache-tests/0.4/cache-tests-0.4-tests.jar
marker = /Users/mircea/github/u_ispn/cdi/tck-runner/target/dependency-maven-plugin-markers/javax.cache-cache-tests-jar-tests-0.4.marker
artifact1 lastModified: 1342020308000
marker lastModified: 1342020308000
< false = marker older than artifact?
[ComponentMetadataPersister] Starting component metadata generation. Scanning classes in /Users/mircea/github/u_ispn/core/target/classes
[ComponentMetadataPersister] Persisted metadata in /Users/mircea/github/u_ispn/core/src/main/resources/infinispan-core-component-metadata.dat
[ComponentMetadataPersister] 209 components and 49 factories analyzed and persisted in 1.23 seconds.

[ComponentMetadataPersister] Starting component metadata generation. Scanning classes in /Users/mircea/github/u_ispn/server/core/target/classes
[ComponentMetadataPersister] Persisted metadata in /Users/mircea/github/u_ispn/server/core/src/main/resources/infinispan-server-core-component-metadata.dat
[ComponentMetadataPersister] 2 components and 0 factories analyzed and persisted in 154 milliseconds.

[ComponentMetadataPersister] Starting component metadata generation. Scanning classes in /Users/mircea/github/u_ispn/query/target/classes
[ComponentMetadataPersister] Persisted metadata in /Users/mircea/github/u_ispn/query/src/main/resources/infinispan-query-component-metadata.dat
[ComponentMetadataPersister] 3 components and 0 factories analyzed and persisted in 84 milliseconds.

ANTLR Parser Generator Version 3.4
Grammar /Users/mircea/github/u_ispn/cli/cli-server/src/main/antlr3/org/infinispan/cli/interpreter/IspnQL.g is up to date - build skipped
[ComponentMetadataPersister] Starting component metadata generation. Scanning classes in /Users/mircea/github/u_ispn/cli/cli-server/target/classes
[ComponentMetadataPersister] Persisted metadata in /Users/mircea/github/u_ispn/cli/cli-server/src/main/resources/infinispan-cli-server-component-metadata.dat
[ComponentMetadataPersister] 1 components and 0 factories analyzed and persisted in 109 milliseconds.

> isMarkerOlder:
artifact1 = /Users/mircea/.m2/repository/javax/cache/cache-tests/0.4/cache-tests-0.4-tests.jar
marker = /Users/mircea/github/u_ispn/cdi/tck-runner/target/dependency-maven-plugin-markers/javax.cache-cache-tests-jar-tests-0.4.marker
artifact1 lastModified: 1342020308000
marker lastModified: 1342020308000
< false = marker older than artifact?
[INFO] Step 3: Complete
[INFO] Step 4: Update Google Analytics tracker
Executing in current directory
Done
[INFO] Step 4: Complete
[INFO] Step 5: Uploading Javadocs
[INFO] Step 5: Complete
[INFO] Step 6: Uploading Artifacts
[INFO] Step 6: Complete
[INFO] Step 7: Uploading to configuration XML schema
[INFO] Step 7: Complete
[INFO] Step 8: Uploading to configuration documentation
[INFO] Step 8: Complete
[INFO] Copying from /Users/mircea/github/u_ispn/target/distribution to 5.2.0.Alpha3
Executing in current directory
file has vanished: "/Users/mircea/github/u_ispn/target/distribution/infinispan-5.2.0.Alpha3-all/doc/5.2/apidocs/org/infinispan/client/hotrod/class-use/ServerStatistics.html.tmp"
Done
rsync warning: some files vanished before they could be transferred (code 24) at /SourceCache/rsync/rsync-42/rsync/main.c(992) [sender=2.6.9]
Process Process-1:
Traceback (most recent call last):
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/multiprocessing/process.py", line 232, in _bootstrap
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/multiprocessing/process.py", line 88, in run
File "bin/release.py", line 227, in upload_javadocs
File "/Users/mircea/github/u_ispn/bin/utils.py", line 350, in upload_rsync
self.upload(fr, to, flags, list(self.rsync_cmd))
File "/Users/mircea/github/u_ispn/bin/utils.py", line 357, in upload
subprocess.check_call(cmd)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 504, in check_call
CalledProcessError: Command '['rsync', '-r', '--protocol=28', '5.2', 'infinispan@filemgmt.jboss.org:/docs_htdocs/infinispan']' returned non-zero exit status 24
^[[B

[INFO] Step 9: Updating version number for next release
[INFO] Step 9: Complete
Counting objects: 177, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (86/86), done.
Writing objects: 100% (91/91), 11.67 KiB, done.
Total 91 (delta 41), reused 0 (delta 0)
To git@github.com:infinispan/infinispan.git

• [new tag] 5.2.0.ALPHA3 -> 5.2.0.ALPHA3
  Switched to branch 'master'
  [INFO]

Done! Now all you need to do is the remaining post-release tasks as outlined in ...