Jenkins 1.518

We use matrix jobs for deployments and have noticed matrix jobs always fail when we disable Run each configuration sequentially. The failure appears on random hosts.

• Our jobs assemble a zip file which is SCP'd to a target host and inflated.

Problem seen and important points

• The wagon-maven-plugin:1.0-beta-4:upload step runs and appears to SCP the zip file to the target host.
• We can see the zip file in the Jenkins workspace directory for the axis.
• The zip file is not found on the target host and the deploy fails.
• The same matrix job succeeds when run sequentially.
• We see the same behavior with all matrix jobs.

Additional observations

• This problem does not appear resource-related because we can run non-matrix jobs concurrently and they succeed.
• The same bad behavior for matrix jobs occurs on single and multi-node Jenkins servers. Thus it isn't a slave problem.