401 error from docker.io

[stephengold]

I've been using not-grep for years, and I think it's great.

This authorization failure started occurring today:

2024-09-27T21:01:57.4305191Z ##[group]Build container for action use: '/home/runner/work/_actions/mattsb42/not-grep/master/Dockerfile'.
2024-09-27T21:01:57.4549904Z ##[command]/usr/bin/docker build -t 61aaf0:b7c7bf63647f4139a970018cb8354ba0 -f "/home/runner/work/_actions/mattsb42/not-grep/master/Dockerfile" "/home/runner/work/_actions/mattsb42/not-grep/master"
2024-09-27T21:01:57.9902630Z #0 building with "default" instance using docker driver
2024-09-27T21:01:57.9903123Z 
2024-09-27T21:01:57.9904012Z #1 [internal] load build definition from Dockerfile
2024-09-27T21:01:57.9905154Z #1 transferring dockerfile: 212B done
2024-09-27T21:01:57.9905959Z #1 DONE 0.0s
2024-09-27T21:01:57.9906271Z 
2024-09-27T21:01:57.9906715Z #2 [internal] load metadata for docker.io/library/python:3-slim
2024-09-27T21:01:58.2443030Z #2 ...
2024-09-27T21:01:58.2443703Z 
2024-09-27T21:01:58.2444091Z #3 [auth] library/python:pull token for registry-1.docker.io
2024-09-27T21:01:58.2445011Z #3 DONE 0.0s
2024-09-27T21:01:58.3944966Z 
2024-09-27T21:01:58.3946021Z #2 [internal] load metadata for docker.io/library/python:3-slim
2024-09-27T21:01:58.6625037Z #2 ERROR: failed to authorize: failed to fetch oauth token: unexpected status from GET request to https://auth.docker.io/token?scope=repository%3Alibrary%2Fpython%3Apull&service=registry.docker.io: 401 Unauthorized
2024-09-27T21:01:58.6764130Z ------
2024-09-27T21:01:58.6764940Z  > [internal] load metadata for docker.io/library/python:3-slim:
2024-09-27T21:01:58.6765829Z ------
2024-09-27T21:01:58.6778391Z Dockerfile:1
2024-09-27T21:01:58.6779161Z --------------------
2024-09-27T21:01:58.6779618Z    1 | >>> FROM python:3-slim
2024-09-27T21:01:58.6780116Z    2 |     ADD . /app
2024-09-27T21:01:58.6780551Z    3 |     WORKDIR /app
2024-09-27T21:01:58.6780965Z --------------------
2024-09-27T21:01:58.6783452Z ERROR: failed to solve: python:3-slim: failed to resolve source metadata for docker.io/library/python:3-slim: failed to authorize: failed to fetch oauth token: unexpected status from GET request to https://auth.docker.io/token?scope=repository%3Alibrary%2Fpython%3Apull&service=registry.docker.io: 401 Unauthorized
2024-09-27T21:01:58.6836421Z ##[warning]Docker build failed with exit code 1, back off 4.015 seconds before retry.
2024-09-27T21:02:02.6999398Z ##[command]/usr/bin/docker build -t 61aaf0:b7c7bf63647f4139a970018cb8354ba0 -f "/home/runner/work/_actions/mattsb42/not-grep/master/Dockerfile" "/home/runner/work/_actions/mattsb42/not-grep/master"
2024-09-27T21:02:03.2284784Z #0 building with "default" instance using docker driver
2024-09-27T21:02:03.2285630Z 
2024-09-27T21:02:03.2286033Z #1 [internal] load build definition from Dockerfile
2024-09-27T21:02:03.2287031Z #1 transferring dockerfile: 212B done
2024-09-27T21:02:03.2287748Z #1 DONE 0.0s
2024-09-27T21:02:03.2288057Z 
2024-09-27T21:02:03.2288498Z #2 [auth] library/python:pull token for registry-1.docker.io
2024-09-27T21:02:03.2289630Z #2 DONE 0.0s
2024-09-27T21:02:03.2289902Z 
2024-09-27T21:02:03.5552519Z #3 [internal] load metadata for docker.io/library/python:3-slim
2024-09-27T21:02:03.5554596Z #3 ERROR: failed to authorize: failed to fetch oauth token: unexpected status from GET request to https://auth.docker.io/token?scope=repository%3Alibrary%2Fpython%3Apull&service=registry.docker.io: 401 Unauthorized
2024-09-27T21:02:03.5646525Z ------
2024-09-27T21:02:03.5647274Z  > [internal] load metadata for docker.io/library/python:3-slim:
2024-09-27T21:02:03.5648024Z ------
2024-09-27T21:02:03.5659152Z Dockerfile:1
2024-09-27T21:02:03.5659604Z --------------------
2024-09-27T21:02:03.5660254Z    1 | >>> FROM python:3-slim
2024-09-27T21:02:03.5660726Z    2 |     ADD . /app
2024-09-27T21:02:03.5661151Z    3 |     WORKDIR /app
2024-09-27T21:02:03.5661700Z --------------------
2024-09-27T21:02:03.5664536Z ERROR: failed to solve: python:3-slim: failed to resolve source metadata for docker.io/library/python:3-slim: failed to authorize: failed to fetch oauth token: unexpected status from GET request to https://auth.docker.io/token?scope=repository%3Alibrary%2Fpython%3Apull&service=registry.docker.io: 401 Unauthorized
2024-09-27T21:02:03.5693176Z ##[warning]Docker build failed with exit code 1, back off 5.611 seconds before retry.
2024-09-27T21:02:09.1809882Z ##[command]/usr/bin/docker build -t 61aaf0:b7c7bf63647f4139a970018cb8354ba0 -f "/home/runner/work/_actions/mattsb42/not-grep/master/Dockerfile" "/home/runner/work/_actions/mattsb42/not-grep/master"
2024-09-27T21:02:09.3033938Z #0 building with "default" instance using docker driver
2024-09-27T21:02:09.3034535Z 
2024-09-27T21:02:09.3034804Z #1 [internal] load build definition from Dockerfile
2024-09-27T21:02:09.4621915Z #1 transferring dockerfile: 212B done
2024-09-27T21:02:09.4622645Z #1 DONE 0.0s
2024-09-27T21:02:09.4622913Z 
2024-09-27T21:02:09.4623294Z #2 [auth] library/python:pull token for registry-1.docker.io
2024-09-27T21:02:09.4624099Z #2 DONE 0.0s
2024-09-27T21:02:09.4624365Z 
2024-09-27T21:02:09.4624748Z #3 [internal] load metadata for docker.io/library/python:3-slim
2024-09-27T21:02:09.7956488Z #3 ERROR: failed to authorize: failed to fetch oauth token: unexpected status from GET request to https://auth.docker.io/token?scope=repository%3Alibrary%2Fpython%3Apull&service=registry.docker.io: 401 Unauthorized
2024-09-27T21:02:09.8075728Z ------
2024-09-27T21:02:09.8076438Z  > [internal] load metadata for docker.io/library/python:3-slim:
2024-09-27T21:02:09.8077257Z ------
2024-09-27T21:02:09.8089390Z Dockerfile:1
2024-09-27T21:02:09.8089842Z --------------------
2024-09-27T21:02:09.8095166Z    1 | >>> FROM python:3-slim
2024-09-27T21:02:09.8095686Z    2 |     ADD . /app
2024-09-27T21:02:09.8096144Z    3 |     WORKDIR /app
2024-09-27T21:02:09.8096582Z --------------------
2024-09-27T21:02:09.8099253Z ERROR: failed to solve: python:3-slim: failed to resolve source metadata for docker.io/library/python:3-slim: failed to authorize: failed to fetch oauth token: unexpected status from GET request to https://auth.docker.io/token?scope=repository%3Alibrary%2Fpython%3Apull&service=registry.docker.io: 401 Unauthorized
2024-09-27T21:02:09.8125825Z ##[endgroup]
2024-09-27T21:02:09.8209461Z ##[error]Docker build failed with exit code 1
2024-09-27T21:02:09.8420782Z Cleaning up orphan processes

[stephengold]

The trouble stopped happening after a few hours. I think it was a transient.

Feel free to close the issue if it's not of interest.