2020-09-18T12:38:33,404 Created temporary directory: /tmp/pip-ephem-wheel-cache-hbvg03ic
2020-09-18T12:38:33,406 Created temporary directory: /tmp/pip-req-tracker-yz802oxr
2020-09-18T12:38:33,406 Initialized build tracking at /tmp/pip-req-tracker-yz802oxr
2020-09-18T12:38:33,407 Created build tracker: /tmp/pip-req-tracker-yz802oxr
2020-09-18T12:38:33,407 Entered build tracker: /tmp/pip-req-tracker-yz802oxr
2020-09-18T12:38:33,407 Created temporary directory: /tmp/pip-wheel-tddcje3z
2020-09-18T12:38:33,415 1 location(s) to search for versions of jupyterlab-widgets:
2020-09-18T12:38:33,415 * https://pypi.org/simple/jupyterlab-widgets/
2020-09-18T12:38:33,416 Fetching project page and analyzing links: https://pypi.org/simple/jupyterlab-widgets/
2020-09-18T12:38:33,416 Getting page https://pypi.org/simple/jupyterlab-widgets/
2020-09-18T12:38:33,418 Found index url https://pypi.org/simple
2020-09-18T12:38:33,530   Found link https://files.pythonhosted.org/packages/9a/87/9464edf0b5c0e76a84a23bce5728a03d091e48675dc2ef4d9a0b0c5e98d4/jupyterlab_widgets-0.3.2-py2.py3-none-any.whl#sha256=313ec6cdf0d3de47a0eaa0f434de71695e34bf5696e8cc9dcc89615c55393537 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.3.2
2020-09-18T12:38:33,530   Found link https://files.pythonhosted.org/packages/b7/da/4cb5909ea09d234556da410800e345b9820ef7a1bd22b1d5e78a65248bc9/jupyterlab_widgets-0.3.2.tar.gz#sha256=40134de02bbcb4265c4484f263b363e673b5f3b099c5710d1cca1ec32b663e00 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.3.2
2020-09-18T12:38:33,531   Found link https://files.pythonhosted.org/packages/17/dc/523c2b66ef63d598c9955e1f8465280783a570d86135c8e56532997dbd74/jupyterlab_widgets-0.3.3-py2.py3-none-any.whl#sha256=a574517a8aacd75e26f06384b556d275e3370498fbb3c5714a5922e2ed01160a (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.3.3
2020-09-18T12:38:33,531   Found link https://files.pythonhosted.org/packages/c6/99/fbe400dbb274eb67e51328dd58b012bad1e12f95963627d83e0bed791c72/jupyterlab_widgets-0.3.3.tar.gz#sha256=54c2f83ecf61b10b4a5111b64d1e7dbe8dec363b361b1048310f68325133be8f (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.3.3
2020-09-18T12:38:33,531   Found link https://files.pythonhosted.org/packages/5c/cd/542c8d6b41ac358ec7f07f967a7f4e3a645657ba7e5adb1752ad743190de/jupyterlab_widgets-0.4.0-py2.py3-none-any.whl#sha256=777646927eea0f4ab4f00bd42c3284ca50582c9da6a59f0c24e54764c718404e (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.4.0
2020-09-18T12:38:33,532   Found link https://files.pythonhosted.org/packages/34/b2/dbe482a616a52e49cf0c4c1fbb8a374a4a7c9c4cf255b629297f5441093f/jupyterlab_widgets-0.4.0.tar.gz#sha256=d53071001d5b394641cbe43439e2034ef1c71a18f319610eba7ac47fdc13c57c (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.4.0
2020-09-18T12:38:33,532   Found link https://files.pythonhosted.org/packages/34/ff/14491d953e4ae5bd44398de053651dbf79c003b90ebf340cadf90dfad9f6/jupyterlab_widgets-0.4.1-py2.py3-none-any.whl#sha256=4df6699bb359e68b60594c09194747e89314b9d936c36225c680025c7fa90324 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.4.1
2020-09-18T12:38:33,532   Found link https://files.pythonhosted.org/packages/04/ea/10bfb586e7909244a0f958ac876f18f23082c16c0cf388270ac132a32c18/jupyterlab_widgets-0.4.1.tar.gz#sha256=e9f095a93604130efbeefe6a89a820a885f7e853d7e16b803e06f6584cccf329 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.4.1
2020-09-18T12:38:33,533   Found link https://files.pythonhosted.org/packages/08/43/0c7b9eb6fe4d841cc3f76f70b207696086f4fb206138b6a55d92898a11f8/jupyterlab_widgets-0.5.0-py2.py3-none-any.whl#sha256=cf1c9a2137271029511c4a12421cb5ede8e6c8da3f1bf7c21ca4f3b57baef60a (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.5.0
2020-09-18T12:38:33,533   Found link https://files.pythonhosted.org/packages/ef/1d/f73bc2e6ceab70ddff659617d49e500dc6507945e2f57ebf9c21ed99fcd5/jupyterlab_widgets-0.5.0.tar.gz#sha256=181512857e60508046e9e6b026d68fef5bd87b2e8c51370f67d51c9b64572e3f (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.5.0
2020-09-18T12:38:33,533   Found link https://files.pythonhosted.org/packages/eb/52/e41611a94806ca8bf9568c1bc7fcd03f17618102b37e8797ac1c815b4e53/jupyterlab_widgets-0.6.0-py2.py3-none-any.whl#sha256=fb7bc7f9272c8b30bfff457d196b1f1f4bbf35ef37619b03155fcb5490acff34 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.0
2020-09-18T12:38:33,534   Found link https://files.pythonhosted.org/packages/f2/0f/112aa53cd9705695d9c2de2341b63f54fd692ed538d1ebd0ac03379954a6/jupyterlab_widgets-0.6.0.tar.gz#sha256=f53d49352bc8266d46077e5f1a60f56ac8a52a75e3f1247ef297034e7c8c37ce (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.0
2020-09-18T12:38:33,534   Found link https://files.pythonhosted.org/packages/ec/af/6e7e95c25cb0c31d7e1f562834e52802c08f52beb58d23f61e3b578d42dc/jupyterlab_widgets-0.6.1-py2.py3-none-any.whl#sha256=faebed0a40cc4c6c6b60b33bdd2694ca969e2b1a919d9d830421f71f37fb7ebd (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.1
2020-09-18T12:38:33,535   Found link https://files.pythonhosted.org/packages/9b/69/e5b552e3f2a9ecc2659d06a4a8aaae8cfc255af1abd1df1422fc1faf6dbd/jupyterlab_widgets-0.6.1.tar.gz#sha256=5b68dd36cbe3a2622cfca40b11fae165ee98e22690cc1977e466aedd6f207ee4 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.1
2020-09-18T12:38:33,535   Found link https://files.pythonhosted.org/packages/a0/88/b5b19ec6abfc932b41661d9e62f03e88da22696c70f04e4f93cd2a512d7e/jupyterlab_widgets-0.6.2-py2.py3-none-any.whl#sha256=d776a4b20e982c5b0a79463d973db2a69ec24d639ffff390c33b9f559cb46caa (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.2
2020-09-18T12:38:33,535   Found link https://files.pythonhosted.org/packages/59/91/4f10ed692eb9742be6324b1ea50d0751f3f72c8374ba9f30b36f7308590f/jupyterlab_widgets-0.6.2.tar.gz#sha256=d665fbb780923a909501eebc4d220ff9ae447c0e4e15c31db054035a1d4a2011 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.2
2020-09-18T12:38:33,536   Found link https://files.pythonhosted.org/packages/6e/58/2e46123f4ceebec4bede4447eddcf419afba6b19513e30b9c9167baff744/jupyterlab_widgets-0.6.3-py2.py3-none-any.whl#sha256=d7e8105b09aaf528451d173d6327aa144589adc22a1e5f69910e8ab8f4971861 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.3
2020-09-18T12:38:33,536   Found link https://files.pythonhosted.org/packages/2e/29/c33912c1bb1a729dd549285dd87043c10893aeb14170dde26a91ae5d27bd/jupyterlab_widgets-0.6.3.tar.gz#sha256=70273cb65abd1bf3dfb4c20b6d30501a60c6f029efbc5f3f3b02f3fec49fd581 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.3
2020-09-18T12:38:33,536   Found link https://files.pythonhosted.org/packages/06/14/c50dd3a4e7da1d7316704e109e48e056f360628c0ffc5d8971b6e661b345/jupyterlab_widgets-0.6.4-py2.py3-none-any.whl#sha256=166d819740863fd61c3715a4c293b6b5be0166fe98e139746393a50a83be5ee8 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.4
2020-09-18T12:38:33,537   Found link https://files.pythonhosted.org/packages/2a/1a/b2a0f5d6c99d9308f08da0c11a1ffe16b8807bdc73416e0556e9254934b8/jupyterlab_widgets-0.6.4.tar.gz#sha256=835a1887e5e1043edebabaea42349006aebc7bbe8427a8d162fe084db81d1939 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.4
2020-09-18T12:38:33,537   Found link https://files.pythonhosted.org/packages/72/9c/7e175dd320175a9d09412d6b7f70192cd5a0346a3b9947dcb25c186caf9e/jupyterlab_widgets-0.6.5-py2.py3-none-any.whl#sha256=abb62704e433a86b69793868d3d3f03ede3d7c469358a0e4b963df20e39c42ed (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.5
2020-09-18T12:38:33,538   Found link https://files.pythonhosted.org/packages/9a/4d/92c93f5797ef15fc8265b02477b739e5d73c9d090c3f359844e529581b88/jupyterlab_widgets-0.6.5.tar.gz#sha256=38ccbf02a6fcf52ff2a7b695f9f5905c235ab1bf1d0fc1031b34e2dee28e43a7 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.5
2020-09-18T12:38:33,538   Found link https://files.pythonhosted.org/packages/72/f4/5f0ab1dc38ff88f597457bc448d60d598dfe0534791e11866ff9ef085c0a/jupyterlab_widgets-0.6.6-py2.py3-none-any.whl#sha256=4b9e2194e16a7b24a3ebca935e7a4297e54d59fd34e756d196f73d9a90fdcc4c (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.6
2020-09-18T12:38:33,538   Found link https://files.pythonhosted.org/packages/25/36/8aa893bd360afe7ac9d4220a65ebb60bf2a30329a67bed112081ecaa1f9c/jupyterlab_widgets-0.6.6.tar.gz#sha256=5a0607a8e3ab16c27165e4b58d3a53aa974a31f3423eb7e007fbec27d470d0a9 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.6
2020-09-18T12:38:33,539   Found link https://files.pythonhosted.org/packages/99/0d/6e3e258deede857bd6f3c13f1243f9ce116318edb309b729c2aaf80b8a39/jupyterlab_widgets-0.6.7-py2.py3-none-any.whl#sha256=30dda83f943422e6d9d7ff1006e2ef5ccfe25902540e33cc4a98caa2a439d51c (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.7
2020-09-18T12:38:33,539   Found link https://files.pythonhosted.org/packages/3d/fa/ba9e6574f5ec52102c9768adc979f8eb7cdeeb19bdda7e0268bafc7699f1/jupyterlab_widgets-0.6.7.tar.gz#sha256=b288b9788b64a9cf7c6d41f69ba8650202721a80215af546851c35dc3644dde6 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.7
2020-09-18T12:38:33,539   Found link https://files.pythonhosted.org/packages/03/3d/af9e001621a0a6659f6e41a1c2dd2de5a9f703b9495a3ef855e952b1e63c/jupyterlab_widgets-0.6.8-py2.py3-none-any.whl#sha256=a2367dda4ac3e106ccec73843db03619488dd7e0b870e8d45cdfb4b96468c5e5 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.8
2020-09-18T12:38:33,540   Found link https://files.pythonhosted.org/packages/e5/82/a678ca5f3212fc7b97e3a04648920c3d38dae297dad332122a50fc4650c4/jupyterlab_widgets-0.6.8.tar.gz#sha256=ee5d8e88f33bbc07f7f548904bc9f7794904926e659dff4d0bc8325f20637c56 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.8
2020-09-18T12:38:33,540   Found link https://files.pythonhosted.org/packages/59/ab/4ebc4458e0d076da9ae14e5a48422134684f7fd8c05cc8599fcfbf48422a/jupyterlab_widgets-0.6.9-py2.py3-none-any.whl#sha256=767d9c5694195afbabcfedb327633d85bf9dc212ee0f4fddb933dfff50390d21 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.9
2020-09-18T12:38:33,540   Found link https://files.pythonhosted.org/packages/64/d6/0605d505506879f98cd6d19e6e70e00f240eb39e63d5b445222301924b1b/jupyterlab_widgets-0.6.9.tar.gz#sha256=a5b480b892955dc7e14a2c8f93d6ab390c033534df9c5af8a2100d0e031fd3b4 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.9
2020-09-18T12:38:33,541   Found link https://files.pythonhosted.org/packages/8a/5e/bbe405f78f26574105ab4efbaa9749d9e8bed04c734aca4e22606c3ccbf4/jupyterlab_widgets-0.6.10-py2.py3-none-any.whl#sha256=4c4dd6a34b7ff7543251986462d7a4a1595e3a5519442eef6e0599b19c89e1c1 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.10
2020-09-18T12:38:33,541   Found link https://files.pythonhosted.org/packages/b1/d8/f7ce8a4aff9b957cdb14e32052087e84721daa7efc6a48e44e252daa1bf4/jupyterlab_widgets-0.6.10.tar.gz#sha256=bcfe3d14d86b3b66c96038a425dc87ca514b464b14bdca557a1cab647e997bb0 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.10
2020-09-18T12:38:33,541   Found link https://files.pythonhosted.org/packages/7c/08/25c8cda2f905ed6802917b9e111043e675bb538dde595fd6f2544fd3a8f3/jupyterlab_widgets-0.6.11-py2.py3-none-any.whl#sha256=deff56385bef53c4cfd0c5ee2f2973a8cabb1d93608592ef6b706c3088a9c291 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.11
2020-09-18T12:38:33,542   Found link https://files.pythonhosted.org/packages/fe/84/e22cab8272dee765531d61327d19cf58e6a0ef3648dbc1db148a2c1f5aab/jupyterlab_widgets-0.6.11.tar.gz#sha256=d7636ffdf690449109f8dda3d9f95cd817434c4455478259864d782bea771efb (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.11
2020-09-18T12:38:33,542   Found link https://files.pythonhosted.org/packages/a5/5b/b04398b366a7ef8fca66f2042b2788b1715af6f5aa995d0056265a90e1f0/jupyterlab_widgets-0.6.12-py2.py3-none-any.whl#sha256=6a3afc496618689c664d9097fcc5b759c209df3bc2e2c21942f9e419137bd26f (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.12
2020-09-18T12:38:33,542   Found link https://files.pythonhosted.org/packages/4e/86/16562b967458d1b00a73cccc6ce11acbe67ddb4b52c3cd2ef9f4213dce3e/jupyterlab_widgets-0.6.12.tar.gz#sha256=ec7ba488a88fac26e584adc391c1ecfa492c6be7d5a7c842f3d41dd538cdbed4 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.12
2020-09-18T12:38:33,543   Found link https://files.pythonhosted.org/packages/b0/9c/74ce567afca7b327a267ec55983d065a90d522eaaa1f59418d83bfe22a61/jupyterlab_widgets-0.6.13-py2.py3-none-any.whl#sha256=bb4ca4dac1c030305757e1156ba7b80c2fef67bbe057c837f9ac7b399cab1c03 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.13
2020-09-18T12:38:33,543   Found link https://files.pythonhosted.org/packages/45/14/5e356628d8ae4c7491b1330bdf6846313150653cc1280e0600bf90b9841c/jupyterlab_widgets-0.6.13.tar.gz#sha256=2fcd0eef009af2d3108073054644cc0506cbe436fa3fa0977394d436de1ab4b1 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.13
2020-09-18T12:38:33,544   Found link https://files.pythonhosted.org/packages/01/ce/0c73c11f981463c1cfc08fc93ca612c3364a7b36de8aa5f167dd60202fb9/jupyterlab_widgets-0.6.14-py2.py3-none-any.whl#sha256=655c3273398d9578372c7c28e51e508cb8098de3f0483047d78341136f7fc353 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.14
2020-09-18T12:38:33,544   Found link https://files.pythonhosted.org/packages/63/b0/45754b72b577c854f8b6396eee3f338ec086013e5a3b04a0b59c10f30b3a/jupyterlab_widgets-0.6.14.tar.gz#sha256=e760670c3d095c013aebadc8a87826eb80af2c419e64c2e73117d0202e99af73 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.14
2020-09-18T12:38:33,544   Found link https://files.pythonhosted.org/packages/ae/e5/87497c627626f0767a2e513f2eda4bb2b24ee52c301332def772e682cb1a/jupyterlab_widgets-0.6.15-py2.py3-none-any.whl#sha256=723c5fd452cb87eb012b3a8275988a0c91d176a5a6e38964192135878aba6dd7 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.15
2020-09-18T12:38:33,545   Found link https://files.pythonhosted.org/packages/bb/78/01be22be6c2db2f67b74ea0fea8e7e95f5dba53910c0cc51410c46a8d74a/jupyterlab_widgets-0.6.15.tar.gz#sha256=2954919a6a04a48230b904e60f00d839e339f15ee9748d4172c8ae403ad4fb47 (from https://pypi.org/simple/jupyterlab-widgets/), version: 0.6.15
2020-09-18T12:38:33,545   Found link https://files.pythonhosted.org/packages/bb/7f/51db83107abc47f921dda588cc529664b661408e60927b26fde1fd37dba1/jupyterlab_widgets-1.0.0a0-py3-none-any.whl#sha256=b59206f804b9ab2dc1e73ae98f17644b1b34065a239e1455bf8f7657017108a0 (from https://pypi.org/simple/jupyterlab-widgets/) (requires-python:>=3.6), version: 1.0.0a0
2020-09-18T12:38:33,546   Found link https://files.pythonhosted.org/packages/82/9e/fe5ae16b4f830c2afac207373d8e9d299d8bea25da554bf44c9d448a4aaf/jupyterlab_widgets-1.0.0a0.tar.gz#sha256=f70ec7b4e333f78e0bf2350e3641d37cc7a6ed39b749a0f58e6200ca3bf9e1d3 (from https://pypi.org/simple/jupyterlab-widgets/) (requires-python:>=3.6), version: 1.0.0a0
2020-09-18T12:38:33,547   Found link https://files.pythonhosted.org/packages/70/88/d1550f5349097aef11aa53158a48cf0a730f7629f243472f09606c788915/jupyterlab_widgets-1.0.0a1-py3-none-any.whl#sha256=2cf945c4972e5635cc0f42745553ed583f34bcf2863cd1ade54caaa9dad186a5 (from https://pypi.org/simple/jupyterlab-widgets/) (requires-python:>=3.6), version: 1.0.0a1
2020-09-18T12:38:33,547   Found link https://files.pythonhosted.org/packages/6b/82/480838edd854c24e4ac433a994294caf8bd8b4ba639a3ba0d77338a7df54/jupyterlab_widgets-1.0.0a1.tar.gz#sha256=8ef1df813d179641ff1191bf85218bd654b7ca44d1aec39091782116ec7afe17 (from https://pypi.org/simple/jupyterlab-widgets/) (requires-python:>=3.6), version: 1.0.0a1
2020-09-18T12:38:33,548   Found link https://files.pythonhosted.org/packages/1b/49/0d9044ca1ce584624689b1c4229a33b1bb3b122d8145c481c86ed64684d2/jupyterlab_widgets-1.0.0a2-py3-none-any.whl#sha256=f7b5fe95a17abd2f684f53ec2a37aecee8076cf9763741c0936df9a0f38cae35 (from https://pypi.org/simple/jupyterlab-widgets/) (requires-python:>=3.6), version: 1.0.0a2
2020-09-18T12:38:33,549   Found link https://files.pythonhosted.org/packages/4b/11/846ea498ec54a74e3ac76b6f8ac9167637378dd730bd160204ff2334ceb0/jupyterlab_widgets-1.0.0a2.tar.gz#sha256=86a58f285f1f898b579759288634faf01af02ab68dcf6c5e224f04271bbaccab (from https://pypi.org/simple/jupyterlab-widgets/) (requires-python:>=3.6), version: 1.0.0a2
2020-09-18T12:38:33,557 Given no hashes to check 2 links for project 'jupyterlab-widgets': discarding no candidates
2020-09-18T12:38:33,558 Using version 1.0.0a2 (newest of versions: 1.0.0a2)
2020-09-18T12:38:33,565 Collecting jupyterlab-widgets==1.0.0a2
2020-09-18T12:38:33,567   Created temporary directory: /tmp/pip-unpack-jrmm08nq
2020-09-18T12:38:33,746   Downloading jupyterlab_widgets-1.0.0a2-py3-none-any.whl (240 kB)
2020-09-18T12:38:33,785   Added jupyterlab-widgets==1.0.0a2 from https://files.pythonhosted.org/packages/1b/49/0d9044ca1ce584624689b1c4229a33b1bb3b122d8145c481c86ed64684d2/jupyterlab_widgets-1.0.0a2-py3-none-any.whl#sha256=f7b5fe95a17abd2f684f53ec2a37aecee8076cf9763741c0936df9a0f38cae35 to build tracker '/tmp/pip-req-tracker-yz802oxr'
2020-09-18T12:38:33,786   Removed jupyterlab-widgets==1.0.0a2 from https://files.pythonhosted.org/packages/1b/49/0d9044ca1ce584624689b1c4229a33b1bb3b122d8145c481c86ed64684d2/jupyterlab_widgets-1.0.0a2-py3-none-any.whl#sha256=f7b5fe95a17abd2f684f53ec2a37aecee8076cf9763741c0936df9a0f38cae35 from build tracker '/tmp/pip-req-tracker-yz802oxr'
2020-09-18T12:38:33,793   Saved /tmp/tmpq6fao7k6/jupyterlab_widgets-1.0.0a2-py3-none-any.whl
2020-09-18T12:38:33,799 Skipping jupyterlab-widgets, due to already being wheel.
2020-09-18T12:38:33,800 Removed build tracker: '/tmp/pip-req-tracker-yz802oxr'