2019-06-27T17:28:45 Created temporary directory: /tmp/pip-ephem-wheel-cache-gtjivugm
2019-06-27T17:28:45 Created temporary directory: /tmp/pip-req-tracker-28628boz
2019-06-27T17:28:45 Created requirements tracker '/tmp/pip-req-tracker-28628boz'
2019-06-27T17:28:45 Created temporary directory: /tmp/pip-wheel-kpvd6899
2019-06-27T17:28:45 Collecting readline==2.6.4
2019-06-27T17:28:45   1 location(s) to search for versions of readline:
2019-06-27T17:28:45   * https://pypi.org/simple/readline/
2019-06-27T17:28:45   Getting page https://pypi.org/simple/readline/
2019-06-27T17:28:45   Analyzing links from page https://pypi.org/simple/readline/
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/6b/28/e3d62a0a04adbcbaf6c738008f46d68aab5cd107ddae9431d113033be28d/readline-2.4.2-py2.3-macosx-10.4-ppc.egg#sha256=a53bbff52bec5a32e2d3362092de8eba58dc48c4313c842472be3db30d43dc98 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/b4/bd/d81d543fd4c1748d869801514743eea9a0b409536c4ae620b01f95a0dd07/readline-2.4.2-py2.4-macosx-10.3-fat.egg#sha256=3f35edb60fd0d6dd2f5819056eebebebd29b5b857141af2717a3046e4b7e1620 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/50/9a/31e0d601b3981817d960a9d8549ec3b4b65380661cc65b14bd372a3f6920/readline-2.4.2-py2.4-macosx-10.4-ppc.egg#sha256=33afd822fefb7566225dba2c35a33bf8234669dd28feb8e761e049bbef4ea4c6 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Found link https://files.pythonhosted.org/packages/48/52/c4ebce633f795f8bcbc820c555ce30bb93dab69d765030a8f89b5b457654/readline-2.4.2.tar.gz#sha256=5f2d3fd74e0934d20a1e339e49433c671f9ac623d7feca37e1d2f3cc672ac461 (from https://pypi.org/simple/readline/), version: 2.4.2
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/76/ef/26e1bcefff596112e7a7430d234a43f9c8f796cf2e24bc737d10eb17dc90/readline-2.5.1-py2.5-macosx-10.5-fat.egg#sha256=1f5ed969b57a4c57ff6ecd23bca5a8d68bb2e06b473177576c101e7134da30cf (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/9c/91/c87e82f103c273acc461aedf45a861a90451016b153dbbc5da7b0f3d7d7f/readline-2.5.1-py2.5-macosx-10.5-i386.egg#sha256=533b30a9e7087c13ed4dd5cee6250a6a1b79323baeaec4a82938b9154e7f8a14 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/cb/14/5e180e5cc8b54598db7a2ade0c3dea27dd18bd1ceaec54d523ccea4c9113/readline-2.5.1-py2.5-macosx-10.5-ppc.egg#sha256=3a496a92bd1e4fde50bc65a8deb28e8b5dbd74a9fb05edf7cb1ec0f5357e077b (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/0d/b8/faad4215cb5a9aa5fa5a0ad309dd34426664624865055d76a7404c1f0800/readline-2.5.1-py2.5-macosx-10.5-ppc64.egg#sha256=78f974c18361d9c1078d97453a22ce3a307c29fee3a6160327f39460dd99ee11 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/a0/9d/b2b87e6e6bf172892924d95016461ca9455feb717999409aed609f6f68c3/readline-2.5.1-py2.5-macosx-10.5-x86_64.egg#sha256=c7598ca89e03bbf37c62307e5bcec4dda50f77cfcd7759293c8e190cc2aa69db (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Found link https://files.pythonhosted.org/packages/cc/31/5101f1a933d7ec6f5a2d223dfd5021f16ad4869efe8a604d0f91951ebcc2/readline-2.5.1.tar.gz#sha256=07d08d19d757be6bfa4ffffcc96a08311f86d4cd7fa13e5c25ef2d01219a79c8 (from https://pypi.org/simple/readline/), version: 2.5.1
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/d9/89/7ebe67b60b172a47132a8ee4961659a13ab6511045a62a116aac082d83ce/readline-2.6.1-py2.5-macosx-10.5-i386.egg#sha256=46cca2040a98fb84b7b7be9d59bc00cb9b1f87faab5c21d305be44f466c8ec35 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/a1/ce/5cc150e8fcc7a2ec83f9c02ebbd505fc269aa0ce2f0ccbba9dbf5047f39f/readline-2.6.1-py2.5-macosx-10.5-ppc.egg#sha256=02ae2fa1a5df6fb9f9e5859ec48dd2d990adad08727a49a00c7d1fcb1e83143a (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/76/c1/35227594fdaffa94ad9dd3929d5bbc3c8e36c3b5046d224b68f5bea8adf3/readline-2.6.1-py2.5-macosx-10.5-ppc64.egg#sha256=64071e0ab7f2ec327a95dfe36766980880a48e3b9873f6de467650c6d765296a (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/18/8d/1c6ff7691b5f2a3dfeecdeeecadddda0e32bf051e5fbae77f9d389888c5e/readline-2.6.1-py2.5-macosx-10.5-x86_64.egg#sha256=178d6770c3e72a2a29dc28551487d8702e33e15821b477e7089968e66002ab30 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/42/76/b4a3138fa2e9e89927f8988a811bf7af16fd22fb5092b68d75e2b921a43e/readline-2.6.1-py2.6-macosx-10.6-universal.egg#sha256=b2e672070142f21b7b17ee64d42cd26d18d67155a5b28608ad89f19026011f7c (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Found link https://files.pythonhosted.org/packages/40/ed/3e125e409684eba9c85bef26446de82a2b53710c99e067680f6d40957bc5/readline-2.6.1.tar.gz#sha256=3dca4266a1e37d5b238df159cff848b286dcc6d6309b813588d535cf019fa826 (from https://pypi.org/simple/readline/), version: 2.6.1
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/f1/11/208bb02857e30b7d0ef80e711623e1793f9d4f7be684e8f33055db0a1d05/readline-2.6.4-py2.5-macosx-10.3-fat.egg#sha256=d31f95a4769db059eea5662ee21c5b8171bce62edc59b366631a83df2decf9d2 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/f1/f4/4a31888d7a6d680664142f102e6818a8015537f113b2a90b052918aeadc2/readline-2.6.4-py2.5-macosx-10.5-i386.egg#sha256=9fd218f511c813522448fee6642488151d50d406831d791668d6ef73891cc2b3 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/18/c1/187486a980e0e8f00ebf27b8ce48f87b82ac1a631eb5712d670c610f7dd2/readline-2.6.4-py2.5-macosx-10.5-ppc.egg#sha256=cfd10e6b40cb632e038465b854d5f5a19942c45671401ca9b1759d7617e2e4b3 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/2e/2f/9706828ee1aada9bbdbbdea6e117f6eaef25932a9715847b73c4ef20c429/readline-2.6.4-py2.5-macosx-10.5-ppc64.egg#sha256=c822e1a06848cda6ae0918ed61d262d7a3963d8ca291abbf92985a87df7d34fa (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/70/a8/d8aeaa0e02670292d34a01066c11c2fa809dee987403b44688aaa8854f61/readline-2.6.4-py2.5-macosx-10.5-x86_64.egg#sha256=5d4ec7fff9093ed93c14a31b1effe092ede6b51b807ea3c17f8d604256112465 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/99/24/420c56666f65e32bd9dc16850af09d1c18cd928d4be76da62592efc925bb/readline-2.6.4-py2.6-macosx-10.6-universal.egg#sha256=9b187dfb7289c751a1eb69a2a2dca4f27c083f9f7e92e02f079393ef70905ec7 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Found link https://files.pythonhosted.org/packages/ab/56/da5971eca4947ead369398543068ad96ad0e60b20c334778f354b4f37313/readline-2.6.4.tar.gz#sha256=f31638a7b677abfdae4b8fea40c7958ee234b5005f65305cf357218abebbf2af (from https://pypi.org/simple/readline/), version: 2.6.4
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/43/ca/823a8983479557a5d17416035de37fce7d62feefaa1570930b86a485ad1d/readline-6.1.0-py2.5-macosx-10.5-i386.egg#sha256=45d8bc1723a8015d329a210c12b29266a7e1cf2d0615a455087fa524e754c0bc (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/4f/04/c1da24785eb438da9161f101fe3e41ac3454deb30e1982bb2d2f4f42e0e4/readline-6.1.0-py2.6-macosx-10.6-universal.egg#sha256=059329ce7dcee0c3420804ca532463809977c91505282b18a60d9deeb6faec36 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Found link https://files.pythonhosted.org/packages/56/09/8e1ef021411b09c054bed09b54f1131f76ea155dc6c6966a520f3b7c9dd7/readline-6.1.0.tar.gz#sha256=88a34571c94e688be41f50beb72ece9d675089bcb5efd097c32481c50bc76bb4 (from https://pypi.org/simple/readline/), version: 6.1.0
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/20/e9/20e8c2e13459bc26c60ed7facad9efdea4513e117714d981290c656b48cd/readline-6.2.0-py2.5-macosx-10.5-i386.egg#sha256=c122ebf3e84d5bcaf5cf887e9f946af7f5963abadf527324867ef2199089043c (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/d3/94/6c7e63ec52320cb9eee9de5704b7e6ce4ac7a89ff55b29f0caf5e6e9a49c/readline-6.2.0-py2.6-macosx-10.6-universal.egg#sha256=3c331073f9f9c91842b3ca41132762b6ced56aab1745298d3a69999a30184f46 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/c8/dc/d14c0dd54c3e92aafada8f6c6529dbb3c64bc17ec810e4b14b5169eab38b/readline-6.2.0-py2.7-macosx-10.7-intel.egg#sha256=55ae1cf3f56b927cc8a1636070b4480b46ef44f471105ba933f2faf6bfec27ef (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Found link https://files.pythonhosted.org/packages/5c/76/d16c10adc14da41058feaa11e7ccc57702a612cd29d9af451af30524f489/readline-6.2.0.tar.gz#sha256=12d766352e2f129f99301f2cea392e3065a85abd4f41665f79cbca07e5b1c21f (from https://pypi.org/simple/readline/), version: 6.2.0
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/28/2a/28c26a99c6a272b5419541aaa4628c61a7728ccdd72f240d43126442744c/readline-6.2.1-py2.5-macosx-10.5-i386.egg#sha256=c6fd365e03c915eeceb4ce4635b1b1b3ed14074c264856a3a5de1dd26133b3ee (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/dc/83/7363f80854ee64c60a870f70270d60179f4802c6bd9f86d1b9048413f652/readline-6.2.1-py2.6-macosx-10.6-universal.egg#sha256=ff10fa35f0f4968177ecd20eb0879072d7527b922aaa93a9deae0effdc854337 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/2d/d5/1a1f4b916fb3e2cbf84a9e5f279facf7f5578dc9aefe1fdda939e086ebf7/readline-6.2.1-py2.7-macosx-10.7-intel.egg#sha256=fb88ee73d910228c7bd8939b29749f9b28bdb91caf54c39be84db12af89cee6c (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Found link https://files.pythonhosted.org/packages/b3/da/998bf0c428615520a8e127b2d7752da27f6ae4b57876fff048025913d90a/readline-6.2.1.tar.gz#sha256=2e789683f826e45e1580dddf814af6db0e00038e15ac641a36c365bf3f48ff5d (from https://pypi.org/simple/readline/), version: 6.2.1
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/d3/94/7d3306b917b62f935452844d7c350cf97d77b8e161601277505ddd19a8cf/readline-6.2.2-py2.5-macosx-10.5-i386.egg#sha256=e7e9a82de515a5b182fba737776d354df037a5f743896fd18aa5a7f4dae5043e (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/cc/85/71486f138cd8f400b20b11b3e1669700c12a2ecdb8fd2ba7138edf440e5b/readline-6.2.2-py2.6-macosx-10.6-universal.egg#sha256=c7136d08f728f6e8340479787170788198dd0e305f9af37291b34ceea1046205 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/35/a5/0f9a548b181089af601c0eb6798a48c4b49795cec3d288390c0b0fc5fe9e/readline-6.2.2-py2.7-macosx-10.7-intel.egg#sha256=859735f6e43a8434a4be5dd725a81518f141d987381b1bb6716c646aca6a16ea (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Found link https://files.pythonhosted.org/packages/59/1b/81d5b49abe3dc9a232e1b79015085b042f506be16f693133ff778384ed65/readline-6.2.2.tar.gz#sha256=b9d30e8928530791944ab40c76aebcd4c8a7d6bc8cda05f3b521446fa3782b6d (from https://pypi.org/simple/readline/), version: 6.2.2
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/c6/69/c6c8aee4ba0690035995f222a8846fbf7bf4bc9ddda8341c6d2fbf2d4ee5/readline-6.2.4-py2.5-macosx-10.5-i386.egg#sha256=8e21323b8ceeecbd42cc4c70caa9387903a31e0b98c85ea946f831356910bc7a (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/2c/04/c9c4412a464937f0c4e348d7ce295bc57a3d04af322fe6741aa5aee1b47b/readline-6.2.4-py2.6-macosx-10.6-universal.egg#sha256=41b988628f58906087b0d5050220a7b6e3d75ae6955cfee596f8bd8bb8d91c8f (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/4e/af/baa1a2c0c3940cfa915a6972f212a2cab40d4de4169bb9a8652dc61aff7e/readline-6.2.4-py2.7-macosx-10.7-intel.egg#sha256=f24148df945b3bd3abab1d603cfb466b286aa80bca7fcccf8c34333463f2d0aa (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Found link https://files.pythonhosted.org/packages/6b/5d/e66651de3ec36e9cf2a9110e99a9c6905eb6b55e9f8c800bbf8e934c55d1/readline-6.2.4.tar.gz#sha256=ac1c0e583eb24083b8ca72e077a8b4ff28349e85533718b4c83c1c44e85ffbbb (from https://pypi.org/simple/readline/), version: 6.2.4
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/b4/50/0dfc24969793c3d4869909583b2e7a5a0ab7d8d99a78a754d17999afd091/readline-6.2.4.1-py2.5-macosx-10.5-i386.egg#sha256=6b34cf7c651791c3017b9cf31c74ef99b9050d14ae55a32898f2eb41787ca00a (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/fb/a9/271741f4baebd11561b31882cd389bee1bd8682f461f0b6019b58b2742fc/readline-6.2.4.1-py2.6-macosx-10.6-universal.egg#sha256=c157d3cf5f97794f0153cfc8ca90c9e11f810b8045d4a0acd33046379342f163 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Skipping link https://files.pythonhosted.org/packages/6a/54/acda0bacdaba40672e105153701be5d22809da3029834c53ce06185204f5/readline-6.2.4.1-py2.7-macosx-10.7-intel.egg#sha256=d91a3294f027fb0d3b124117c550312f45eded265e01c62fd3470c28cda0e346 (from https://pypi.org/simple/readline/); unsupported archive format: .egg
2019-06-27T17:28:45     Found link https://files.pythonhosted.org/packages/f4/01/2cf081af8d880b44939a5f1b446551a7f8d59eae414277fd0c303757ff1b/readline-6.2.4.1.tar.gz#sha256=e00f86e03dfe52e7d1502cec5c64070b32621c85509c0081a4cfa6a0294bd107 (from https://pypi.org/simple/readline/), version: 6.2.4.1
2019-06-27T17:28:45   Using version 2.6.4 (newest of versions: 2.6.4)
2019-06-27T17:28:45   Created temporary directory: /tmp/pip-unpack-35n6u718
2019-06-27T17:28:46   Downloading https://files.pythonhosted.org/packages/ab/56/da5971eca4947ead369398543068ad96ad0e60b20c334778f354b4f37313/readline-2.6.4.tar.gz (2.3MB)
2019-06-27T17:28:46   Downloading from URL https://files.pythonhosted.org/packages/ab/56/da5971eca4947ead369398543068ad96ad0e60b20c334778f354b4f37313/readline-2.6.4.tar.gz#sha256=f31638a7b677abfdae4b8fea40c7958ee234b5005f65305cf357218abebbf2af (from https://pypi.org/simple/readline/)
2019-06-27T17:28:46   Added readline==2.6.4 from https://files.pythonhosted.org/packages/ab/56/da5971eca4947ead369398543068ad96ad0e60b20c334778f354b4f37313/readline-2.6.4.tar.gz#sha256=f31638a7b677abfdae4b8fea40c7958ee234b5005f65305cf357218abebbf2af to build tracker '/tmp/pip-req-tracker-28628boz'
2019-06-27T17:28:46     Running setup.py (path:/tmp/pip-wheel-kpvd6899/readline/setup.py) egg_info for package readline
2019-06-27T17:28:46     Running command python setup.py egg_info
2019-06-27T17:28:48     Traceback (most recent call last):
2019-06-27T17:28:48       File "<string>", line 1, in <module>
2019-06-27T17:28:48       File "/tmp/pip-wheel-kpvd6899/readline/setup.py", line 86
2019-06-27T17:28:48         print "\n============ Building the readline library ============\n"
2019-06-27T17:28:48                                                                           ^
2019-06-27T17:28:48     SyntaxError: Missing parentheses in call to 'print'. Did you mean print("\n============ Building the readline library ============\n")?
2019-06-27T17:28:48 Cleaning up...
2019-06-27T17:28:48   Removing source in /tmp/pip-wheel-kpvd6899/readline
2019-06-27T17:28:48 Removed readline==2.6.4 from https://files.pythonhosted.org/packages/ab/56/da5971eca4947ead369398543068ad96ad0e60b20c334778f354b4f37313/readline-2.6.4.tar.gz#sha256=f31638a7b677abfdae4b8fea40c7958ee234b5005f65305cf357218abebbf2af from build tracker '/tmp/pip-req-tracker-28628boz'
2019-06-27T17:28:48 Removed build tracker '/tmp/pip-req-tracker-28628boz'
2019-06-27T17:28:48 ERROR: Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-wheel-kpvd6899/readline/
2019-06-27T17:28:48 Exception information:
2019-06-27T17:28:48 Traceback (most recent call last):
2019-06-27T17:28:48   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/cli/base_command.py", line 178, in main
2019-06-27T17:28:48     status = self.run(options, args)
2019-06-27T17:28:48   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/commands/wheel.py", line 164, in run
2019-06-27T17:28:48     resolver.resolve(requirement_set)
2019-06-27T17:28:48   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolve.py", line 131, in resolve
2019-06-27T17:28:48     self._resolve_one(requirement_set, req)
2019-06-27T17:28:48   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolve.py", line 294, in _resolve_one
2019-06-27T17:28:48     abstract_dist = self._get_abstract_dist_for(req_to_install)
2019-06-27T17:28:48   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolve.py", line 242, in _get_abstract_dist_for
2019-06-27T17:28:48     self.require_hashes
2019-06-27T17:28:48   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/operations/prepare.py", line 362, in prepare_linked_requirement
2019-06-27T17:28:48     abstract_dist.prep_for_dist(finder, self.build_isolation)
2019-06-27T17:28:48   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/operations/prepare.py", line 171, in prep_for_dist
2019-06-27T17:28:48     self.req.prepare_metadata()
2019-06-27T17:28:48   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/req/req_install.py", line 537, in prepare_metadata
2019-06-27T17:28:48     self.run_egg_info()
2019-06-27T17:28:48   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/req/req_install.py", line 615, in run_egg_info
2019-06-27T17:28:48     command_desc='python setup.py egg_info')
2019-06-27T17:28:48   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/utils/misc.py", line 776, in call_subprocess
2019-06-27T17:28:48     % (command_desc, proc.returncode, cwd))
2019-06-27T17:28:48 pip._internal.exceptions.InstallationError: Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-wheel-kpvd6899/readline/