Created temporary directory: /tmp/pip-ephem-wheel-cache-zu2j_j8u
Created temporary directory: /tmp/pip-req-tracker-9l2biohy
Created requirements tracker '/tmp/pip-req-tracker-9l2biohy'
Created temporary directory: /tmp/pip-wheel-ek3ae2lq
Collecting flax==0.1.0rc1
  1 location(s) to search for versions of flax:
  * https://pypi.org/simple/flax/
  Getting page https://pypi.org/simple/flax/
  Analyzing links from page https://pypi.org/simple/flax/
    Found link https://files.pythonhosted.org/packages/cb/90/5a67c1144d70f44c222f9d76852a498806ad97e521e5c8705d896e8b34fb/flax-0.0.1a0-py3-none-any.whl#sha256=9085764abaae7ec5a1edf89d55ee2f971ba9f0fe2178b6ce629d8a3b7bf25142 (from https://pypi.org/simple/flax/), version: 0.0.1a0
    Found link https://files.pythonhosted.org/packages/36/e9/a189d8548d967b08a688d3f88fafe87c0cfee91bb61d2cf1e134da1c212c/flax-0.0.1a0.tar.gz#sha256=7eff327da9a306fc1055b47163e9b55d22befff878903b206bdfeacd9b5cfa44 (from https://pypi.org/simple/flax/), version: 0.0.1a0
    Found link https://files.pythonhosted.org/packages/8c/5e/b4d781e8a1689ed1b71296be8eaf79e21d3e6e4e473a79b6362e65faed02/flax-0.1.0rc1-py3-none-any.whl#sha256=8c7cceaf0a1116aeb38d5a7f4b24d9baea5a9dddfa4fdf87802363ed2b887ea7 (from https://pypi.org/simple/flax/), version: 0.1.0rc1
    Found link https://files.pythonhosted.org/packages/3d/1b/f363177a24ec73bb28cc6425d85de8f4d589ab51871d9af1b8af4e7c1e2b/flax-0.1.0rc1.tar.gz#sha256=d88f24cd59e22fcfe4bfc037c88ecc34d3f7d9ce8db297c317421f7664d6b678 (from https://pypi.org/simple/flax/), version: 0.1.0rc1
  Using version 0.1.0rc1 (newest of versions: 0.1.0rc1)
  Created temporary directory: /tmp/pip-unpack-sn8dd6dj
  Downloading https://files.pythonhosted.org/packages/8c/5e/b4d781e8a1689ed1b71296be8eaf79e21d3e6e4e473a79b6362e65faed02/flax-0.1.0rc1-py3-none-any.whl (60kB)
  Downloading from URL https://files.pythonhosted.org/packages/8c/5e/b4d781e8a1689ed1b71296be8eaf79e21d3e6e4e473a79b6362e65faed02/flax-0.1.0rc1-py3-none-any.whl#sha256=8c7cceaf0a1116aeb38d5a7f4b24d9baea5a9dddfa4fdf87802363ed2b887ea7 (from https://pypi.org/simple/flax/)
  Saved /tmp/tmpt_ko0vqr/flax-0.1.0rc1-py3-none-any.whl
  Added flax==0.1.0rc1 from https://files.pythonhosted.org/packages/8c/5e/b4d781e8a1689ed1b71296be8eaf79e21d3e6e4e473a79b6362e65faed02/flax-0.1.0rc1-py3-none-any.whl#sha256=8c7cceaf0a1116aeb38d5a7f4b24d9baea5a9dddfa4fdf87802363ed2b887ea7 to build tracker '/tmp/pip-req-tracker-9l2biohy'
  Removed flax==0.1.0rc1 from https://files.pythonhosted.org/packages/8c/5e/b4d781e8a1689ed1b71296be8eaf79e21d3e6e4e473a79b6362e65faed02/flax-0.1.0rc1-py3-none-any.whl#sha256=8c7cceaf0a1116aeb38d5a7f4b24d9baea5a9dddfa4fdf87802363ed2b887ea7 from build tracker '/tmp/pip-req-tracker-9l2biohy'
Skipping flax, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-ek3ae2lq/flax
Removed build tracker '/tmp/pip-req-tracker-9l2biohy'