System information

• OS Platform and Distribution (e.g., Linux Ubuntu 16.04): 19.04
• Ray installed from (source or binary): source
• Ray version: latest
• Python version: 3.6
• Exact command to reproduce: pip install -e . --verbose

Describe the problem

pip install would fail with bazel version 0.25.x but bazel 0.24.1 works just fine. This is likely caused by census-instrumentation/opencensus-cpp#307

Source code / logs