old buildgraph:

[illuminati pants (kwlzn/engine/closed_loop_runner)]$ time ./pants list :: | wc -l
WARN] Injecting dependency from BuildFileAddress(BuildFile(src/python/pants/engine/exp/legacy/BUILD, FileSystemProjectTree(/Users/kwilson/dev/pants)), commands) on BuildFileAddress(BuildFile(src/python/pants/bin/BUILD, FileSystemProjectTree(/Users/kwilson/dev/pants)), bin), but the dependency is not in the BuildGraph.  This probably indicates a dependency cycle, but it is not an error until sort_targets is called on a subgraph containing the cycle.
    1267

real  0m6.618s
user  0m1.283s
sys 0m0.335s

new buildgraph, cold:

[illuminati pants (kwlzn/engine/closed_loop_runner)]$ time ./pants list :: | wc -l
WARN] Injecting dependency from BuildFileAddress(BuildFile(src/python/pants/engine/exp/legacy/BUILD, FileSystemProjectTree(/Users/kwilson/dev/pants)), commands) on BuildFileAddress(BuildFile(src/python/pants/bin/BUILD, FileSystemProjectTree(/Users/kwilson/dev/pants)), bin), but the dependency is not in the BuildGraph.  This probably indicates a dependency cycle, but it is not an error until sort_targets is called on a subgraph containing the cycle.
    1267

real  0m49.443s
user  0m0.149s
sys 0m0.080s

new buildgraph, warm:

[illuminati pants (kwlzn/engine/closed_loop_runner)]$ time ./pants list :: | wc -l
WARN] Injecting dependency from BuildFileAddress(BuildFile(src/python/pants/engine/exp/legacy/BUILD, FileSystemProjectTree(/Users/kwilson/dev/pants)), commands) on BuildFileAddress(BuildFile(src/python/pants/bin/BUILD, FileSystemProjectTree(/Users/kwilson/dev/pants)), bin), but the dependency is not in the BuildGraph.  This probably indicates a dependency cycle, but it is not an error until sort_targets is called on a subgraph containing the cycle.
    1267

real  0m1.618s
user  0m0.145s
sys 0m0.079s