Failed attempts to pull new changes do not fail the build. The scm times out but the build rolls forward with the old data.
The job should fail, or there should be an option to fail when pulls timeout.
[project_name] $ hg pull --rev default
ERROR: Timeout after 3600 seconds
[project_name] $ hg update --clean --rev default
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
[project_name] $ hg log --rev . --template

[project_name] $ hg log --rev . --template