2021-07-10T12:44:42,560 Created temporary directory: /tmp/pip-ephem-wheel-cache-vf11lmbi
2021-07-10T12:44:42,563 Created temporary directory: /tmp/pip-req-tracker-c6zjopph
2021-07-10T12:44:42,563 Initialized build tracking at /tmp/pip-req-tracker-c6zjopph
2021-07-10T12:44:42,564 Created build tracker: /tmp/pip-req-tracker-c6zjopph
2021-07-10T12:44:42,564 Entered build tracker: /tmp/pip-req-tracker-c6zjopph
2021-07-10T12:44:42,564 Created temporary directory: /tmp/pip-wheel-iain5o8g
2021-07-10T12:44:42,595 1 location(s) to search for versions of switching:
2021-07-10T12:44:42,595 * https://pypi.org/simple/switching/
2021-07-10T12:44:42,595 Fetching project page and analyzing links: https://pypi.org/simple/switching/
2021-07-10T12:44:42,596 Getting page https://pypi.org/simple/switching/
2021-07-10T12:44:42,598 Found index url https://pypi.org/simple
2021-07-10T12:44:42,708   Found link https://files.pythonhosted.org/packages/51/58/7024965f2ba2e677b8b870f5f71e7dac4f6e33071cb2d50061b6de3c8a2d/switching-2.6.0.tar.gz#sha256=6620b056e92ad23a6f465e914b58e2da3133f2d6278b7cc2cf4e036b70b03316 (from https://pypi.org/simple/switching/), version: 2.6.0
2021-07-10T12:44:42,709   Found link https://files.pythonhosted.org/packages/2d/5d/b501974b753f431561d791e6d3d7e7e3369fc6debe49b7b37a8fb4e2b20f/switching-2.6.3.tar.gz#sha256=f61bb9753e5b1c68be172512e253d8f62086ebdcdae9983dbd32a60d59ce410f (from https://pypi.org/simple/switching/), version: 2.6.3
2021-07-10T12:44:42,709   Found link https://files.pythonhosted.org/packages/17/f9/8cd895a6dd64dad57dc2df51c01695beeb358ca95509bbdee32c1d99685f/switching-2.6.7.tar.gz#sha256=690703a9460a01b9465b86315edb1d695e8bc2428fade4e03959ad976708872a (from https://pypi.org/simple/switching/), version: 2.6.7
2021-07-10T12:44:42,709   Found link https://files.pythonhosted.org/packages/56/e9/218855a90f4e2c84c43e98c21e00f814ab627af5890a9c29192e6c978e29/switching-2.6.8.tar.gz#sha256=8cb4c92d26bf5e57abea542dbcb6ed86b1b8a25aebfbc0fc49d8582a3bdda287 (from https://pypi.org/simple/switching/), version: 2.6.8
2021-07-10T12:44:42,710   Found link https://files.pythonhosted.org/packages/bd/e4/527626b0bc52b512498137735b7466a7d04279358feb015ea3c329861a54/switching-2.6.9.tar.gz#sha256=4be7d92ae5e6db6a319f2cd073cd04d0b9d3aa81d1c9882ea56a12f2669d330b (from https://pypi.org/simple/switching/), version: 2.6.9
2021-07-10T12:44:42,710   Found link https://files.pythonhosted.org/packages/a7/62/854c83ff9c31017d12c0148ed1beec2f4695d946be01e2956b8013e5b481/switching-2.6.10.tar.gz#sha256=1c17fad1ccfb60fb007a020d95ca18a73c4cd4b62fb6dd69720d5cf60d4fd9e0 (from https://pypi.org/simple/switching/), version: 2.6.10
2021-07-10T12:44:42,710   Found link https://files.pythonhosted.org/packages/6c/a2/9b7f9cf0f212c40d847db10c2db76a90a106eaca07d9d71ecce014cac870/switching-2.6.11.tar.gz#sha256=bddc25db84c1e21e75b82403e1659f447b71cda02b0c0ea6f6c2afad0fb6c3d2 (from https://pypi.org/simple/switching/), version: 2.6.11
2021-07-10T12:44:42,710   Found link https://files.pythonhosted.org/packages/ab/fc/fc526425ff937dc8203d767f2b855ec6e5d86912a2fa7ff2186821d14d23/switching-2.6.12.tar.gz#sha256=f35866de56562fa047f4c86e422e2f4e5c5039a8d6c23a7a9dd3babcbca841b2 (from https://pypi.org/simple/switching/), version: 2.6.12
2021-07-10T12:44:42,711   Found link https://files.pythonhosted.org/packages/f7/4e/36ea3fa557a0771716ca46dff37f48f5a5cbfcb0ccd0e42e55a23b1dcf51/switching-2.6.13.tar.gz#sha256=e51f026c8b5281bc81068f0cf6c92fc62b75e945176a639e113aa18758dcc918 (from https://pypi.org/simple/switching/), version: 2.6.13
2021-07-10T12:44:42,711   Found link https://files.pythonhosted.org/packages/8c/d9/93cd2a41587d13afc0b98d0fb3500739be51fb9597e61bc96de6b3cceb98/switching-2.6.14.tar.gz#sha256=dc89647b2a1683efb7b94fa73d2c9c2e45b43d8fb59a62a746cfcd276851ce6f (from https://pypi.org/simple/switching/), version: 2.6.14
2021-07-10T12:44:42,711   Found link https://files.pythonhosted.org/packages/70/ee/bd969a0df68c570409bd855574f71464168c43493352ef631c39eb518870/switching-2.6.15.tar.gz#sha256=eda1be8b840cb3888c010697e4f4c5813d4805f480f6ae97027d46537218ab23 (from https://pypi.org/simple/switching/), version: 2.6.15
2021-07-10T12:44:42,712   Found link https://files.pythonhosted.org/packages/c7/04/af0d6106eb8412ec1c86a084df506ca4075a8339a26b8da01254cd5d65db/switching-2.6.16.tar.gz#sha256=bbc66790f551373cd3fdad2a59de71a632d7f1b8575e468c5f057bc4191adb6d (from https://pypi.org/simple/switching/), version: 2.6.16
2021-07-10T12:44:42,712   Found link https://files.pythonhosted.org/packages/2f/c3/404f4dbbacc64ea8e782391a19b5b1cd1b7f34c6a9a409a64815277c2dec/switching-2.6.17.tar.gz#sha256=975984e4bd90c79525f9f2fc52d1f864f58928035cce679d2317be165c00ac6a (from https://pypi.org/simple/switching/), version: 2.6.17
2021-07-10T12:44:42,712   Found link https://files.pythonhosted.org/packages/eb/12/00c2a90aeae4f0102fec57010503a703dc589d4477dba07feaba5400b25f/switching-2.6.18.tar.gz#sha256=5eb921f13c1545856734571ff0f6b4138bc7d50afab0a5c8f73a57500e616375 (from https://pypi.org/simple/switching/), version: 2.6.18
2021-07-10T12:44:42,712   Found link https://files.pythonhosted.org/packages/e8/ed/83bf51b38774625eb196816abc1ffa5505138200392cfd88e419405aba3b/switching-2.6.19.tar.gz#sha256=e7b068b5f3b6b238ed0db3ed46a0d36033d04f10afa5942682ba1b06ea7ba46a (from https://pypi.org/simple/switching/), version: 2.6.19
2021-07-10T12:44:42,713   Found link https://files.pythonhosted.org/packages/f1/a3/f3346590dde85f01ad07ce7570f88217c4ca9163250719e39a65b41af245/switching-2.6.20.tar.gz#sha256=e679b97d5f4bd07430e5041add109732e5d2ac871371921d8e316ff382c83177 (from https://pypi.org/simple/switching/), version: 2.6.20
2021-07-10T12:44:42,713   Found link https://files.pythonhosted.org/packages/c7/c5/72d2f8f4df3d5f3b06f928602b87dbc0a068d3a1e253dab3bffbd6666381/switching-2.6.21.tar.gz#sha256=c88207796decb0e269d88eca195824ee9923ddf0ebd7c0a281063025073de941 (from https://pypi.org/simple/switching/), version: 2.6.21
2021-07-10T12:44:42,713   Found link https://files.pythonhosted.org/packages/4b/8f/6220a49afb6b042b693a9f1157ae10d49e1edc5931cc647f0d76b06170bf/switching-2.6.22.tar.gz#sha256=387666a94232972804633e005e353373843520d722b12facd92c13bcde58fd0a (from https://pypi.org/simple/switching/), version: 2.6.22
2021-07-10T12:44:42,713   Found link https://files.pythonhosted.org/packages/58/cb/69d9c2f2a63ecadf7b395e9adeee11d2d3b340a3a3a1f651921eb32432b9/switching-2.6.23.tar.gz#sha256=b93e0e32d39d2ed0cb564919e06d011ad8f3a873bb4fa2f0d8109721d9744b3c (from https://pypi.org/simple/switching/), version: 2.6.23
2021-07-10T12:44:42,714   Found link https://files.pythonhosted.org/packages/a5/72/03afb6578aaa8a73ad3bb8a4fbf386b834bcbb9ee3f800524c49f63a013a/switching-2.6.24.tar.gz#sha256=a18244a42acd30dff24c5c265d839e299d7b5f3f4e34dae46c53e05ab3472844 (from https://pypi.org/simple/switching/), version: 2.6.24
2021-07-10T12:44:42,714   Found link https://files.pythonhosted.org/packages/0d/f1/a30e43220266d1ade181e66a7d1639b9e3e5bc333ae5bdf9924defb5294d/switching-2.6.25.tar.gz#sha256=10577602cf1a6bd040ff2f70231eba978e73d18ee86d8cd6e214e0a98c34bb5a (from https://pypi.org/simple/switching/), version: 2.6.25
2021-07-10T12:44:42,714   Found link https://files.pythonhosted.org/packages/f4/08/350f44790fcadeed27872a0941598b211aa601f5d803221ba6635ef12932/switching-2.6.26.tar.gz#sha256=94a7a73314144ec2f5100b49efc709a4ea67b78e6ac852b294b11fb0c854fd5e (from https://pypi.org/simple/switching/), version: 2.6.26
2021-07-10T12:44:42,715   Found link https://files.pythonhosted.org/packages/97/bd/2330eaccb364dd46d509c4f60f6877eca5a8f42e3ed28349949e812c5754/switching-2.6.27.tar.gz#sha256=f68ec2c499fd54165253e35afc5494349bc0a372f586f709daaa3171e02cc997 (from https://pypi.org/simple/switching/), version: 2.6.27
2021-07-10T12:44:42,715   Found link https://files.pythonhosted.org/packages/a3/a5/d61079619478a764dcdd903928260953fad86d48c1787e89c45be2d46b6b/switching-2.6.28.tar.gz#sha256=94999723abd51b6b3935790b722ecfaccb4c623472b5bad7f916310db84f857a (from https://pypi.org/simple/switching/), version: 2.6.28
2021-07-10T12:44:42,715   Found link https://files.pythonhosted.org/packages/3f/57/58cabaca2e350d9b7b335e6e31ab5b44e80bfb02425450b9b8c4e4fd93c4/switching-2.6.29.tar.gz#sha256=319add74ed2fa1b7472378667444cfa5711e3823ef486b5429c934f6d9024ea8 (from https://pypi.org/simple/switching/), version: 2.6.29
2021-07-10T12:44:42,715   Found link https://files.pythonhosted.org/packages/8b/f7/8bce60e1bfc5e3cfc4799276845f88cc89c97fc5ab788985b45904d511cf/switching-2.6.30.tar.gz#sha256=f3cf8e20328edaba462b6644aa0377921e9d7ac63a196bcbc3a9412b0147cc7f (from https://pypi.org/simple/switching/), version: 2.6.30
2021-07-10T12:44:42,716   Found link https://files.pythonhosted.org/packages/63/48/0553af6535a765b86b1129588def1f8a84a524a457fb1ab212b83d412138/switching-2.6.31.tar.gz#sha256=f5995e5384f1c0de844ee49f098a4ab368bbecab0c49d98a42b722ba9dcac8b7 (from https://pypi.org/simple/switching/), version: 2.6.31
2021-07-10T12:44:42,716   Found link https://files.pythonhosted.org/packages/db/e6/f70ae77d6083c8b0ba1c0f2697aa01f879d48cdce4d5d10b5bf5c5c56cf4/switching-2.6.32.tar.gz#sha256=deea1af2efe9904f7469a2e7c4a90ea421cdfa1e14d8784900db5d3ee66a5ede (from https://pypi.org/simple/switching/), version: 2.6.32
2021-07-10T12:44:42,716   Found link https://files.pythonhosted.org/packages/96/0c/2d21040570f79f741b2e211d66694eac29d6474c2d47871c72a64bc9e321/switching-2.6.34.tar.gz#sha256=4112a34d586ee2c31085cc68eb7b4c3ae0c755c31412a2176c86e76997332923 (from https://pypi.org/simple/switching/), version: 2.6.34
2021-07-10T12:44:42,716   Found link https://files.pythonhosted.org/packages/25/1f/d51993191112e60d3200c9cc8fac2740d89edb5ae1ea5aaaf715f0fa7080/switching-2.6.35.tar.gz#sha256=851efb638af6afe56f4fccbc383dbc029d9a2b660aec72038395a3da7ef9b576 (from https://pypi.org/simple/switching/), version: 2.6.35
2021-07-10T12:44:42,717   Found link https://files.pythonhosted.org/packages/25/10/5abce668b068563720285d15641c85607ceedc208c04acd4801fa3911a59/switching-2.6.36.tar.gz#sha256=5e97f502f10e30e8b5e89089111b9e5fa7aa51ec07c3a3fdf26b19872a27571f (from https://pypi.org/simple/switching/), version: 2.6.36
2021-07-10T12:44:42,717   Found link https://files.pythonhosted.org/packages/9c/f3/8d02715e77048e25815d34dc329cce8270f3e44a1706635aa22c3d3bfcd2/switching-2.6.37.tar.gz#sha256=eb38b30e4fdaef04a0ba7ed43183823883e29a9ac5875b04e79e8b080987d206 (from https://pypi.org/simple/switching/), version: 2.6.37
2021-07-10T12:44:42,717   Found link https://files.pythonhosted.org/packages/24/b0/8af3b217b1f5e141d8b3c5d85dfe612e06e5cfc53ae648e1472890cec948/switching-2.6.38.tar.gz#sha256=5de338d7a07860746199bf6275e097e0a1d6fbea141b868d2e6a8ab1acf1b854 (from https://pypi.org/simple/switching/), version: 2.6.38
2021-07-10T12:44:42,718   Found link https://files.pythonhosted.org/packages/de/58/1594e846c655228c39fe84bd8e8dbf9dbf9156a28121aba55bbb8b2662b1/switching-2.6.39.tar.gz#sha256=1463c381ed1afc2ad8db96f75c0cb49b822001332636265fdbfef53139f8643d (from https://pypi.org/simple/switching/), version: 2.6.39
2021-07-10T12:44:42,718   Found link https://files.pythonhosted.org/packages/2f/25/80c53dbb2f1ec02d9ebfd7f98fc70c19cc5e0c39e79accb096ecf991b07d/switching-2.6.40.tar.gz#sha256=65acc34be4f7c7ac3bef4dd20c72f80c3c03508613aa70d84a31385830e122b2 (from https://pypi.org/simple/switching/), version: 2.6.40
2021-07-10T12:44:42,718   Found link https://files.pythonhosted.org/packages/aa/b4/dc00f4c0725b26b46cf5f83090e043f61d567affbe246e0a6419b25ac3d1/switching-2.6.41.tar.gz#sha256=9b995ef12b590817088c8a41321793403001b008f109ebde86a685722203e5e2 (from https://pypi.org/simple/switching/), version: 2.6.41
2021-07-10T12:44:42,718   Found link https://files.pythonhosted.org/packages/00/ad/491d0402763c521f6edf07c18ef50cc3679b81ab1bc8bd7af023f6fb025e/switching-2.7.1.tar.gz#sha256=e03260b876edee8f52d2227d7a02bb856d79a7b38219b47cab5e6df94772540a (from https://pypi.org/simple/switching/), version: 2.7.1
2021-07-10T12:44:42,719   Found link https://files.pythonhosted.org/packages/09/1b/1872165f95cbc21c5d3732f6b86fd8a0e9334c19980316db3a85a2d6961b/switching-2.7.2.tar.gz#sha256=95b3ce96c2a0dc7a506ee347734706877a95ccb6dd2460bcdb280fe276c01b8e (from https://pypi.org/simple/switching/), version: 2.7.2
2021-07-10T12:44:42,719   Found link https://files.pythonhosted.org/packages/e7/29/5e9e3b5b525ed05fd73659290ea9118a8f710a523e9d6fdc01c3d3b40ca4/switching-2.7.3.tar.gz#sha256=430c8446abf7de8c042c95ae4deaf8a1c7761e85f972e856ab649a18205c9c00 (from https://pypi.org/simple/switching/), version: 2.7.3
2021-07-10T12:44:42,719   Found link https://files.pythonhosted.org/packages/62/76/9e6d4ec59b59a68186ca42479b441e11c1fa4586241a0b12cd176a4b93ac/switching-2.8.0.tar.gz#sha256=e0d9d52bbb1a02ba246db618b2a1c05120b86fbc1289bf340072e50a7afde754 (from https://pypi.org/simple/switching/), version: 2.8.0
2021-07-10T12:44:42,719   Found link https://files.pythonhosted.org/packages/1a/9e/71d598a46fc2f5510d07fb46399ca8bd32dac1976d76340b8e6dcf3f9f6c/switching-2.8.1.tar.gz#sha256=1d08b6189e1faaf2299cfbc54e1cb304816853b1634f33b1f44c8ab7c7e075c5 (from https://pypi.org/simple/switching/), version: 2.8.1
2021-07-10T12:44:42,720   Found link https://files.pythonhosted.org/packages/41/db/c3898b52d4b0c21444d3923f44e332a9477849575edb1690239ab595e278/switching-2.8.2.tar.gz#sha256=2f94e7198c2668270f421926df3500b45f22c03fa7159ce22c162344ee2966d1 (from https://pypi.org/simple/switching/), version: 2.8.2
2021-07-10T12:44:42,720   Found link https://files.pythonhosted.org/packages/69/1a/dea7f9592da8e94ffa36747ffeb25ee44a77873e400cd613ab8c52c3e5cf/switching-2.9.0.tar.gz#sha256=4d513fd7d709bb58e9fde03f8c03199ca1a45ccceaa32b298d07dc81552af680 (from https://pypi.org/simple/switching/), version: 2.9.0
2021-07-10T12:44:42,720   Found link https://files.pythonhosted.org/packages/58/97/48b6a67b6c64d597c9b7da31bf85484314dd1dbe04055e998e0e2381825a/switching-2.10.0.tar.gz#sha256=0d2dd3c8fbe883a66ba0c1cb727c0178850bb459a7f5596b9ea34093b8fde345 (from https://pypi.org/simple/switching/), version: 2.10.0
2021-07-10T12:44:42,720   Found link https://files.pythonhosted.org/packages/6a/2d/fda4f1f882c7939d943d528cd5ac89d9e227fd2aa33a828550fa1e23484e/switching-2.10.1.tar.gz#sha256=e89a0da020ffd08ab738dc2aa1990516b8e9d92debeb56a53a6a7be668c8e194 (from https://pypi.org/simple/switching/), version: 2.10.1
2021-07-10T12:44:42,721   Found link https://files.pythonhosted.org/packages/c9/2d/645ac01220533260b4baeff0aa2236da23a1b3895b03008055827998a5d9/switching-2.10.2.tar.gz#sha256=560f0f881bb23ab4321d201c59238b70b8363296d125a23d5e07783a9583a673 (from https://pypi.org/simple/switching/), version: 2.10.2
2021-07-10T12:44:42,721   Found link https://files.pythonhosted.org/packages/0f/cd/f690c8d9a02a4dc53c43aaa7121d55762bdc147a2b23be0dd3b685f02fc8/switching-2.11.0.tar.gz#sha256=4de7d9b54d1c9ce05f152a377081495f18a377b38ea393189f997bdeb6600bc4 (from https://pypi.org/simple/switching/), version: 2.11.0
2021-07-10T12:44:42,721   Found link https://files.pythonhosted.org/packages/c2/f6/6822e66e7644a88d3a03181af40e99a7ad77222da787defd7995bef1f4c8/switching-2.12.0.tar.gz#sha256=df3ac52c0783cd3557326766c214e9625b686c746d92a1c212eec7958bb2cefd (from https://pypi.org/simple/switching/), version: 2.12.0
2021-07-10T12:44:42,722   Found link https://files.pythonhosted.org/packages/69/47/2135fecb759d8386f7350d50622e09ea18b0cddaed265bb4036fa0f3fe0c/switching-2.12.1.tar.gz#sha256=6b24424b4b673e210310cbfe301129484ba27d221b3b45b3ea7f9804f8159fb7 (from https://pypi.org/simple/switching/), version: 2.12.1
2021-07-10T12:44:42,722   Found link https://files.pythonhosted.org/packages/23/e4/41899a675c17e9a170b8683a628f33547b2a57a51a215fb876f3497639f7/switching-2.12.2.tar.gz#sha256=365887602cbf23ccffbcd79474006f3b9b64ef7f28453522412ca40e6d37317f (from https://pypi.org/simple/switching/), version: 2.12.2
2021-07-10T12:44:42,722 Skipping link: not a file: https://pypi.org/simple/switching/
2021-07-10T12:44:42,747 Given no hashes to check 1 links for project 'switching': discarding no candidates
2021-07-10T12:44:42,766 Collecting switching==2.6.20
2021-07-10T12:44:42,768   Created temporary directory: /tmp/pip-unpack-wo7wuqug
2021-07-10T12:44:42,985   Downloading switching-2.6.20.tar.gz (87 kB)
2021-07-10T12:44:43,238   Added switching==2.6.20 from https://files.pythonhosted.org/packages/f1/a3/f3346590dde85f01ad07ce7570f88217c4ca9163250719e39a65b41af245/switching-2.6.20.tar.gz#sha256=e679b97d5f4bd07430e5041add109732e5d2ac871371921d8e316ff382c83177 to build tracker '/tmp/pip-req-tracker-c6zjopph'
2021-07-10T12:44:43,239     Running setup.py (path:/tmp/pip-wheel-iain5o8g/switching_11cb9ada31bc452095c5960e510b654d/setup.py) egg_info for package switching
2021-07-10T12:44:43,240     Created temporary directory: /tmp/pip-pip-egg-info-sfs8_l_q
2021-07-10T12:44:43,240     Running command python setup.py egg_info
2021-07-10T12:44:43,935     Traceback (most recent call last):
2021-07-10T12:44:43,936       File "<string>", line 1, in <module>
2021-07-10T12:44:43,937       File "/tmp/pip-wheel-iain5o8g/switching_11cb9ada31bc452095c5960e510b654d/setup.py", line 21
2021-07-10T12:44:43,937         print "Cleaning %s dir" % self.build_base
2021-07-10T12:44:43,937               ^
2021-07-10T12:44:43,938     SyntaxError: Missing parentheses in call to 'print'. Did you mean print("Cleaning %s dir" % self.build_base)?
2021-07-10T12:44:43,986 WARNING: Discarding https://files.pythonhosted.org/packages/f1/a3/f3346590dde85f01ad07ce7570f88217c4ca9163250719e39a65b41af245/switching-2.6.20.tar.gz#sha256=e679b97d5f4bd07430e5041add109732e5d2ac871371921d8e316ff382c83177 (from https://pypi.org/simple/switching/). Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
2021-07-10T12:44:43,989 ERROR: Could not find a version that satisfies the requirement switching==2.6.20 (from versions: 2.6.0, 2.6.3, 2.6.7, 2.6.8, 2.6.9, 2.6.10, 2.6.11, 2.6.12, 2.6.13, 2.6.14, 2.6.15, 2.6.16, 2.6.17, 2.6.18, 2.6.19, 2.6.20, 2.6.21, 2.6.22, 2.6.23, 2.6.24, 2.6.25, 2.6.26, 2.6.27, 2.6.28, 2.6.29, 2.6.30, 2.6.31, 2.6.32, 2.6.34, 2.6.35, 2.6.36, 2.6.37, 2.6.38, 2.6.39, 2.6.40, 2.6.41, 2.7.1, 2.7.2, 2.7.3, 2.8.0, 2.8.1, 2.8.2, 2.9.0, 2.10.0, 2.10.1, 2.10.2, 2.11.0, 2.12.0, 2.12.1, 2.12.2)
2021-07-10T12:44:43,989 ERROR: No matching distribution found for switching==2.6.20
2021-07-10T12:44:43,989 Exception information:
2021-07-10T12:44:43,989 Traceback (most recent call last):
2021-07-10T12:44:43,989   File "/usr/local/lib/python3.9/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 341, in resolve
2021-07-10T12:44:43,989     name, crit = self._merge_into_criterion(r, parent=None)
2021-07-10T12:44:43,989   File "/usr/local/lib/python3.9/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 173, in _merge_into_criterion
2021-07-10T12:44:43,989     raise RequirementsConflicted(criterion)
2021-07-10T12:44:43,989 pip._vendor.resolvelib.resolvers.RequirementsConflicted: Requirements conflict: SpecifierRequirement('switching==2.6.20')
2021-07-10T12:44:43,989 
2021-07-10T12:44:43,989 During handling of the above exception, another exception occurred:
2021-07-10T12:44:43,989 
2021-07-10T12:44:43,989 Traceback (most recent call last):
2021-07-10T12:44:43,989   File "/usr/local/lib/python3.9/dist-packages/pip/_internal/resolution/resolvelib/resolver.py", line 127, in resolve
2021-07-10T12:44:43,989     result = self._result = resolver.resolve(
2021-07-10T12:44:43,989   File "/usr/local/lib/python3.9/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 473, in resolve
2021-07-10T12:44:43,989     state = resolution.resolve(requirements, max_rounds=max_rounds)
2021-07-10T12:44:43,989   File "/usr/local/lib/python3.9/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 343, in resolve
2021-07-10T12:44:43,989     raise ResolutionImpossible(e.criterion.information)
2021-07-10T12:44:43,989 pip._vendor.resolvelib.resolvers.ResolutionImpossible: [RequirementInformation(requirement=SpecifierRequirement('switching==2.6.20'), parent=None)]
2021-07-10T12:44:43,989 
2021-07-10T12:44:43,989 The above exception was the direct cause of the following exception:
2021-07-10T12:44:43,989 
2021-07-10T12:44:43,989 Traceback (most recent call last):
2021-07-10T12:44:43,989   File "/usr/local/lib/python3.9/dist-packages/pip/_internal/cli/base_command.py", line 180, in _main
2021-07-10T12:44:43,989     status = self.run(options, args)
2021-07-10T12:44:43,989   File "/usr/local/lib/python3.9/dist-packages/pip/_internal/cli/req_command.py", line 205, in wrapper
2021-07-10T12:44:43,989     return func(self, options, args)
2021-07-10T12:44:43,989   File "/usr/local/lib/python3.9/dist-packages/pip/_internal/commands/wheel.py", line 142, in run
2021-07-10T12:44:43,989     requirement_set = resolver.resolve(
2021-07-10T12:44:43,989   File "/usr/local/lib/python3.9/dist-packages/pip/_internal/resolution/resolvelib/resolver.py", line 136, in resolve
2021-07-10T12:44:43,989     raise error from e
2021-07-10T12:44:43,989 pip._internal.exceptions.DistributionNotFound: No matching distribution found for switching==2.6.20
2021-07-10T12:44:43,994 Removed switching==2.6.20 from https://files.pythonhosted.org/packages/f1/a3/f3346590dde85f01ad07ce7570f88217c4ca9163250719e39a65b41af245/switching-2.6.20.tar.gz#sha256=e679b97d5f4bd07430e5041add109732e5d2ac871371921d8e316ff382c83177 from build tracker '/tmp/pip-req-tracker-c6zjopph'
2021-07-10T12:44:43,994 Removed build tracker: '/tmp/pip-req-tracker-c6zjopph'