2019-07-05T10:07:15 Created temporary directory: /tmp/pip-ephem-wheel-cache-w96d7lu8
2019-07-05T10:07:15 Created temporary directory: /tmp/pip-req-tracker-p5naeifd
2019-07-05T10:07:15 Created requirements tracker '/tmp/pip-req-tracker-p5naeifd'
2019-07-05T10:07:15 Created temporary directory: /tmp/pip-wheel-vte39fvl
2019-07-05T10:07:15 Collecting ipywidgets_server==0.1.0rc2
2019-07-05T10:07:15   1 location(s) to search for versions of ipywidgets-server:
2019-07-05T10:07:15   * https://pypi.org/simple/ipywidgets-server/
2019-07-05T10:07:15   Getting page https://pypi.org/simple/ipywidgets-server/
2019-07-05T10:07:15   Analyzing links from page https://pypi.org/simple/ipywidgets-server/
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/51/01/7d5bb3419725c31f26e0bddaa8de3211fd2848203b2b61a09eda3e18f3c0/ipywidgets_server-0.1.0rc0.tar.gz#sha256=d68aaa1eb5e76662916be48f936a583ed14eaf4bdd5dac8f083288055b80eab4 (from https://pypi.org/simple/ipywidgets-server/), version: 0.1.0rc0
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/0a/f9/6c2ca06a9cea441b7e709693c9d9b5b2ab6f90ccf82b8d0c7a442b1004f4/ipywidgets_server-0.1.0rc1.tar.gz#sha256=09edee6eb505b0825895aff83136262a3a381d998a9a276f1efb478a728cb8b3 (from https://pypi.org/simple/ipywidgets-server/), version: 0.1.0rc1
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/6a/e0/42de60ae598868103413b722f11595f865307f0309954b5fccc146c1b018/ipywidgets_server-0.1.0rc2.tar.gz#sha256=afb8ba465dcc0ddb3760d702841de75b4b859879b876ae829d9f92b22675dd80 (from https://pypi.org/simple/ipywidgets-server/), version: 0.1.0rc2
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/f7/bc/8db92f5ce6607e6e742030914bcb749fe3cefdd165d7c46101b8509a9386/ipywidgets_server-0.1.0rc3.tar.gz#sha256=a5b84bc47e66824026382abc832c49d503f753c5f57b95ad034b4891943d065e (from https://pypi.org/simple/ipywidgets-server/), version: 0.1.0rc3
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/7f/c8/17785d97a9e6b065bfb6f6d241676fe73e840e698728c72bcd5166ac1076/ipywidgets_server-0.1.0rc4.tar.gz#sha256=6d929502db670d74b0a0e849b1ba545654546213ccb6e62199c4d0e91389c976 (from https://pypi.org/simple/ipywidgets-server/), version: 0.1.0rc4
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/69/01/5f53d4f1c07c4272983711eac370d1c5cac130bdf380b66e1b5e3733641f/ipywidgets_server-0.1.0.tar.gz#sha256=32fc2474a7830742545989c5a19f7116a4b225b9962e5938a1e003ef2dbe91ef (from https://pypi.org/simple/ipywidgets-server/), version: 0.1.0
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/b8/e8/c22fb1c321422675769c79976a310e0e6d8bd7a1315050ee04c08544c5da/ipywidgets_server-0.1.1rc1.tar.gz#sha256=d602079056bfd37061da23872a3ec82e99367703b46373470bf6f27f31619070 (from https://pypi.org/simple/ipywidgets-server/), version: 0.1.1rc1
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/24/68/2e8da2abfee025d058f3b04c671fe95960039b3aeaace691b1adea967eed/ipywidgets_server-0.1.1.tar.gz#sha256=fa6eef012eef079a9e477b850ce9a9e1f20c12da7a7423d21d406f1b8a52b24e (from https://pypi.org/simple/ipywidgets-server/), version: 0.1.1
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/95/0e/ae8639191d8e1c7dc0eb97eac0727de211387a13b25221df387f4b9063f6/ipywidgets_server-0.1.2rc1.tar.gz#sha256=96e85702f110fca5e1191e14b32ef21978b22178f299070b1ff5224e28b29f5e (from https://pypi.org/simple/ipywidgets-server/), version: 0.1.2rc1
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/33/02/f24bd2787ad5e0dcff37f72fa4efc17c3481e4d5858a96a106e015a8b745/ipywidgets_server-0.1.2.tar.gz#sha256=ae250f1b472cd194eabbca668019c4292927d562cac725235eebdfe6c1fcfaf9 (from https://pypi.org/simple/ipywidgets-server/), version: 0.1.2
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/71/0c/56b2626098407e42bbda353dad35247bcbe4d14a870150f5aef3b4f9f9ff/ipywidgets_server-0.1.3.tar.gz#sha256=ebdef9f3bd0aed16cedbd23199c63537a83c0cac52f8c9f0366fa9a67a84f963 (from https://pypi.org/simple/ipywidgets-server/), version: 0.1.3
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/cf/e6/93cea34ea520d0483d8b295e236da190dd756f90b499887f3688410fe394/ipywidgets_server-0.1.4rc1.tar.gz#sha256=db4d61ad28bd216d4dd87a8918291a0b0b526bc97d284cd1c8eded0e2eee3696 (from https://pypi.org/simple/ipywidgets-server/), version: 0.1.4rc1
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/b3/1e/f902d9abefa7699aa3f5c3ab2681b99d4adc93c9710f01ba5a40f192fb5d/ipywidgets_server-0.1.4.tar.gz#sha256=636a7ffa7a7a29fa4e4f77c3787eb93ce292ba16dd813d764adfac60767974e6 (from https://pypi.org/simple/ipywidgets-server/), version: 0.1.4
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/ca/e0/b5c0d71934302235e4d063477e9be7d098bb937384fa4bd284c7319d80d6/ipywidgets_server-0.2.0rc1.tar.gz#sha256=7e3bfb5299ee19b769262d1d134b4aacbd98b9aad9571bc293109bdf482ce093 (from https://pypi.org/simple/ipywidgets-server/), version: 0.2.0rc1
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/96/4f/fc9dabcdd69871ead6e00c884b235d93b4b5b5bbaf4d175a092e61695ed1/ipywidgets_server-0.2.0.tar.gz#sha256=8e5c6bf6f097663fb2b2c779e94bc4133831a9f623f2cbb6426e5bc198811831 (from https://pypi.org/simple/ipywidgets-server/), version: 0.2.0
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/43/1a/d80558608da06f780b09799eb4e6e6115045a259e53d54de954bc6f0cfab/ipywidgets_server-0.2.1rc1.tar.gz#sha256=0cbcf54b13e629b735f55e0e7e31b60822422738f64a45a59af8cc3fa457d801 (from https://pypi.org/simple/ipywidgets-server/), version: 0.2.1rc1
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/f5/c9/f8a1c4e7593f42dd3ca3c41fdd160f0f417f0129e99d44f6e6a0654cc2b7/ipywidgets_server-0.2.1.tar.gz#sha256=f05e944312d655df4fc94eadbb2536fc2e31490b0ef3204c2b00598be1a82b78 (from https://pypi.org/simple/ipywidgets-server/), version: 0.2.1
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/00/8c/22e25b3d09f38f79e3d0e4d6f43b11183badaca836346e6dfdd8aadb1718/ipywidgets_server-0.2.2a1.tar.gz#sha256=92d4292253956a586e97f8a0677d21d3de96c13ea36de6254ac20e332df9ece7 (from https://pypi.org/simple/ipywidgets-server/), version: 0.2.2a1
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/f2/79/24f66982eece8bea36b927b6d1a9292aca9f811fba8275ee7b8e512ff4ff/ipywidgets_server-0.2.2a2.tar.gz#sha256=4ac0e52c389319143b1e446b850c1e0da2ee07859c163ba699547f017f07b7f7 (from https://pypi.org/simple/ipywidgets-server/), version: 0.2.2a2
2019-07-05T10:07:15     Found link https://files.pythonhosted.org/packages/c3/a0/a143b7af70b0e1ab055a1d99fd337ebee269d7e508c82e162d2b367fa684/ipywidgets_server-0.2.2a3.tar.gz#sha256=0bbb41eda05bd778d9f9feccd521326a253dff47032ce08d73cccb8ff13e7a9d (from https://pypi.org/simple/ipywidgets-server/), version: 0.2.2a3
2019-07-05T10:07:15   Using version 0.1.0rc2 (newest of versions: 0.1.0rc2)
2019-07-05T10:07:15   Created temporary directory: /tmp/pip-unpack-wusebqh4
2019-07-05T10:07:16   Downloading https://files.pythonhosted.org/packages/6a/e0/42de60ae598868103413b722f11595f865307f0309954b5fccc146c1b018/ipywidgets_server-0.1.0rc2.tar.gz (3.0MB)
2019-07-05T10:07:16   Downloading from URL https://files.pythonhosted.org/packages/6a/e0/42de60ae598868103413b722f11595f865307f0309954b5fccc146c1b018/ipywidgets_server-0.1.0rc2.tar.gz#sha256=afb8ba465dcc0ddb3760d702841de75b4b859879b876ae829d9f92b22675dd80 (from https://pypi.org/simple/ipywidgets-server/)
2019-07-05T10:07:18   Added ipywidgets_server==0.1.0rc2 from https://files.pythonhosted.org/packages/6a/e0/42de60ae598868103413b722f11595f865307f0309954b5fccc146c1b018/ipywidgets_server-0.1.0rc2.tar.gz#sha256=afb8ba465dcc0ddb3760d702841de75b4b859879b876ae829d9f92b22675dd80 to build tracker '/tmp/pip-req-tracker-p5naeifd'
2019-07-05T10:07:18     Running setup.py (path:/tmp/pip-wheel-vte39fvl/ipywidgets-server/setup.py) egg_info for package ipywidgets-server
2019-07-05T10:07:18     Running command python setup.py egg_info
2019-07-05T10:07:19     running egg_info
2019-07-05T10:07:19     running jsdeps
2019-07-05T10:07:19     /usr/local/lib/python3.7/dist-packages/setuptools/dist.py:472: UserWarning: Normalizing '0.1.0-rc2' to '0.1.0rc2'
2019-07-05T10:07:19       normalized_version,
2019-07-05T10:07:19     `npm` unavailable.  If you're running this command using sudo, make sure `npm` is available to sudo
2019-07-05T10:07:19     rebuilding js and css failed
2019-07-05T10:07:19     missing files: ['/tmp/pip-wheel-vte39fvl/ipywidgets-server/ipywidgets_server/static/dist/@jupyter-widgets/base.js', '/tmp/pip-wheel-vte39fvl/ipywidgets-server/ipywidgets_server/static/dist/@jupyter-widgets/controls.js']
2019-07-05T10:07:19     Traceback (most recent call last):
2019-07-05T10:07:19       File "<string>", line 1, in <module>
2019-07-05T10:07:19       File "/tmp/pip-wheel-vte39fvl/ipywidgets-server/setup.py", line 166, in <module>
2019-07-05T10:07:19         setup(**setup_args)
2019-07-05T10:07:19       File "/usr/local/lib/python3.7/dist-packages/setuptools/__init__.py", line 145, in setup
2019-07-05T10:07:19         return distutils.core.setup(**attrs)
2019-07-05T10:07:19       File "/usr/lib/python3.7/distutils/core.py", line 148, in setup
2019-07-05T10:07:19         dist.run_commands()
2019-07-05T10:07:19       File "/usr/lib/python3.7/distutils/dist.py", line 966, in run_commands
2019-07-05T10:07:19         self.run_command(cmd)
2019-07-05T10:07:19       File "/usr/lib/python3.7/distutils/dist.py", line 985, in run_command
2019-07-05T10:07:19         cmd_obj.run()
2019-07-05T10:07:19       File "/tmp/pip-wheel-vte39fvl/ipywidgets-server/setup.py", line 48, in run
2019-07-05T10:07:19         raise e
2019-07-05T10:07:19       File "/tmp/pip-wheel-vte39fvl/ipywidgets-server/setup.py", line 41, in run
2019-07-05T10:07:19         self.distribution.run_command('jsdeps')
2019-07-05T10:07:19       File "/usr/lib/python3.7/distutils/dist.py", line 985, in run_command
2019-07-05T10:07:19         cmd_obj.run()
2019-07-05T10:07:19       File "/tmp/pip-wheel-vte39fvl/ipywidgets-server/setup.py", line 119, in run
2019-07-05T10:07:19         raise ValueError(msg)
2019-07-05T10:07:19     ValueError: Missing file: /tmp/pip-wheel-vte39fvl/ipywidgets-server/ipywidgets_server/static/dist/@jupyter-widgets/base.js
2019-07-05T10:07:19     npm is required to build a development version
2019-07-05T10:07:20 Cleaning up...
2019-07-05T10:07:20   Removing source in /tmp/pip-wheel-vte39fvl/ipywidgets-server
2019-07-05T10:07:20 Removed ipywidgets_server==0.1.0rc2 from https://files.pythonhosted.org/packages/6a/e0/42de60ae598868103413b722f11595f865307f0309954b5fccc146c1b018/ipywidgets_server-0.1.0rc2.tar.gz#sha256=afb8ba465dcc0ddb3760d702841de75b4b859879b876ae829d9f92b22675dd80 from build tracker '/tmp/pip-req-tracker-p5naeifd'
2019-07-05T10:07:20 Removed build tracker '/tmp/pip-req-tracker-p5naeifd'
2019-07-05T10:07:20 ERROR: Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-wheel-vte39fvl/ipywidgets-server/
2019-07-05T10:07:20 Exception information:
2019-07-05T10:07:20 Traceback (most recent call last):
2019-07-05T10:07:20   File "/home/piwheels/.local/lib/python3.7/site-packages/pip/_internal/cli/base_command.py", line 178, in main
2019-07-05T10:07:20     status = self.run(options, args)
2019-07-05T10:07:20   File "/home/piwheels/.local/lib/python3.7/site-packages/pip/_internal/commands/wheel.py", line 164, in run
2019-07-05T10:07:20     resolver.resolve(requirement_set)
2019-07-05T10:07:20   File "/home/piwheels/.local/lib/python3.7/site-packages/pip/_internal/resolve.py", line 131, in resolve
2019-07-05T10:07:20     self._resolve_one(requirement_set, req)
2019-07-05T10:07:20   File "/home/piwheels/.local/lib/python3.7/site-packages/pip/_internal/resolve.py", line 294, in _resolve_one
2019-07-05T10:07:20     abstract_dist = self._get_abstract_dist_for(req_to_install)
2019-07-05T10:07:20   File "/home/piwheels/.local/lib/python3.7/site-packages/pip/_internal/resolve.py", line 242, in _get_abstract_dist_for
2019-07-05T10:07:20     self.require_hashes
2019-07-05T10:07:20   File "/home/piwheels/.local/lib/python3.7/site-packages/pip/_internal/operations/prepare.py", line 362, in prepare_linked_requirement
2019-07-05T10:07:20     abstract_dist.prep_for_dist(finder, self.build_isolation)
2019-07-05T10:07:20   File "/home/piwheels/.local/lib/python3.7/site-packages/pip/_internal/operations/prepare.py", line 171, in prep_for_dist
2019-07-05T10:07:20     self.req.prepare_metadata()
2019-07-05T10:07:20   File "/home/piwheels/.local/lib/python3.7/site-packages/pip/_internal/req/req_install.py", line 537, in prepare_metadata
2019-07-05T10:07:20     self.run_egg_info()
2019-07-05T10:07:20   File "/home/piwheels/.local/lib/python3.7/site-packages/pip/_internal/req/req_install.py", line 615, in run_egg_info
2019-07-05T10:07:20     command_desc='python setup.py egg_info')
2019-07-05T10:07:20   File "/home/piwheels/.local/lib/python3.7/site-packages/pip/_internal/utils/misc.py", line 776, in call_subprocess
2019-07-05T10:07:20     % (command_desc, proc.returncode, cwd))
2019-07-05T10:07:20 pip._internal.exceptions.InstallationError: Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-wheel-vte39fvl/ipywidgets-server/