[CI Failure Doctor] 🏥 CI Failure Investigation - Run #33010

[github-actions]

Summary

CI test job fails because go test cannot download any modules from proxy.golang.org, so the suite aborts before any tests even run.

Failure Details

• Run: #33010
• Commit: 794e93a
• Trigger: push

Root Cause Analysis

go test -v -parallel=8 -timeout=3m -run='^Test' -tags '!integration' ./... hits repeated 403 Forbidden responses when contacting (proxy.golang.org/redacted) for every dependency (cli/go-gh/v2, charmbracelet bubbles/bubbletea/lipgloss/huh, fsnotify, etc.), so the module downloads never complete and the go command exits with setup failed.

Failed Jobs and Errors

• test (go test ...): fails before executing application code because each go: downloading ... request to proxy.golang.org ends with 403 Forbidden, so go cannot fetch needed modules.

Investigation Findings

• Running the exact go test command locally reproduces the same 403 errors (see attached logs) so this is not limited to the GitHub runner.
• All of the dependencies are public, so the 403 likely stems from a new network restriction, proxy policy, or missing credentials when contacting proxy.golang.org.

Recommended Actions

• Verify that the CI environment still has unrestricted access to (proxy.golang.org/redacted); update any firewall/proxy configuration if required.
• If the proxy requires credentials, configure GOPROXY, GONOSUMDB, or GONOSUMDB appropriately so go can authenticate.
• As a mitigation, consider vendoring the frequently used modules so that the build no longer depends on live downloads.

Prevention Strategies

Ensure Go can reach proxy.golang.org before running go test (e.g., `curl (proxy.golang.org/redacted) Add retries or cache the dependencies in the workflow if the external proxy is flaky.

AI Team Self-Improvement

Always confirm external dependency downloads succeed (proxy accessibility + credentials) before running CI commands that hit the network.

Historical Context

No previous investigation recorded for this 403 pattern on proxy.golang.org for January 2026 runs.

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• expires on Feb 2, 2026, 3:36 PM UTC

[pelikhan]

Run go mod for that job before running