Sometime in the last day or two, trying to rebuild a Toolforge tool started to fail; the following part of the output is where it all seems to go wrong:
[step-set-stack-toml] 2026-03-19T00:14:09.453544792Z 2026/03/19 00:14:09 warning: unsuccessful cred copy: ".docker" from "/tekton/creds" to "/tekton/home": unable to open destination: open /tekton/home/.docker/config.json: permission denied [step-set-stack-toml] 2026-03-19T00:14:21.471606585Z Using run image: tools-harbor.wmcloud.org/toolforge/heroku-runner:22-cnb [step-analyze] 2026-03-19T00:14:09.885656849Z 2026/03/19 00:14:09 warning: unsuccessful cred copy: ".docker" from "/tekton/creds" to "/tekton/home": unable to open destination: open /tekton/home/.docker/config.json: permission denied [step-analyze] 2026-03-19T00:14:23.556450974Z Restoring data for SBOM from previous image [step-detect] 2026-03-19T00:14:24.631407358Z 2 of 4 buildpacks participating [step-detect] 2026-03-19T00:14:24.631488524Z heroku/php 0.1.2 [step-detect] 2026-03-19T00:14:24.631503117Z heroku/procfile 2.0.2 [step-restore] 2026-03-19T00:14:10.704376023Z 2026/03/19 00:14:10 warning: unsuccessful cred copy: ".docker" from "/tekton/creds" to "/tekton/home": unable to open destination: open /tekton/home/.docker/config.json: permission denied [step-restore] 2026-03-19T00:14:24.755830992Z Restoring metadata for "heroku/procfile:nested_launcher_fix" from app image [step-build] 2026-03-19T00:14:25.183101241Z [step-build] 2026-03-19T00:14:25.183183437Z [Bootstrapping] [step-build] 2026-03-19T00:14:26.000316705Z [step-build] 2026-03-19T00:14:26.000379960Z [Error: A download error occurred during bootstrapping] [step-build] 2026-03-19T00:14:26.000405583Z https://codeload.github.com/heroku/heroku-buildpack-php/tar.gz/refs/heads/cnb-installer: status code 404 (redirected from https://github.com/heroku/heroku-buildpack-php/archive/refs/heads/cnb-installer.tar.gz) [step-build] 2026-03-19T00:14:26.000416935Z [step-build] 2026-03-19T00:14:26.000427359Z This is most likely a transient internal error; you should re-try the operation. [step-build] 2026-03-19T00:14:26.000436073Z [step-build] 2026-03-19T00:14:26.000444997Z Please make sure that you are not running an outdated version of the buildpack. [step-build] 2026-03-19T00:14:26.000454837Z [step-build] 2026-03-19T00:14:26.000465007Z If the problem persists, open a support ticket and include the full log output of this build. [step-build] 2026-03-19T00:14:26.002601395Z ERROR: failed to build: exit status 1
I have two different Toolforge tools and they both have this problem, so I don't think it's due to some specific configuration. Is anyone else experiencing this?