flake: TestProvision/external-agent

[flake-investigator]

Summary

CI run failed in provisioner/terraform during TestProvision/external-agent with terraform init returning exit status 1.

CI Run (original)

• https://github.com/coder/coder/actions/runs/21963166795
• Commit: b1f48f8d472c1636ca051b835b695c89070eed26 (author: ケイラ)
• Failing job: test-go-pg-17 (Linux)
• Failure time: 2026-02-12T20:35:41Z

Failure Log (original)

=== FAIL: provisioner/terraform TestProvision/external-agent (21.24s)
    t.go:111: ... executor: command done  args="[init -no-color -input=false -json]"  error="exit status 1"
    t.go:111: ... init failed  error="exit status 1"
    t.go:111: ... recv done on Session ... error= drpc: stream terminated by sending error
    provision_test.go:1125:
        Error: Received unexpected error:
            cannot plan before successful init

Notes

• No data race warnings or panic/OOM indicators.
• The failing subtest sets SkipCacheProviders: true in provisioner/terraform/provision_test.go, so Terraform init may hit the network for providers; stderr from terraform init was not present in the logs.

Root Cause

Infrastructure/flaky (terraform init failed; likely transient provider download/registry/network issue, but logs do not include explicit provider error).

Related Issues

• flake: [Infrastructure] Terraform provider install 503 - provisioner/terraform TestProvision/ai-task-app-id #1193 (provider install 503 in TestProvision/ai-task-app-id; similar init failure class)

Assignment Analysis

• Test definition: provisioner/terraform/provision_test.go (external-agent subtest around lines ~981-1020).
• Recent non-trivial test file changes from git log --oneline -10 --follow provisioner/terraform/provision_test.go show caching-related updates by Kacper Sawicki (f543a87b) and provisioner changes by Steven Masley (61d7d298, 3194bcf). Assigning to Steven Masley (Emyrk) as provisioner/terraform owner; reassign if needed.

Reproduction

• go test ./provisioner/terraform -run TestProvision/external-agent -count=1

[flake-investigator]

Reoccurred on main CI.

CI Run: https://github.com/coder/coder/actions/runs/22404599503
Failing job: test-go-pg-17 (Linux)
Commit: 3353e687e78d959d4a4cf540c25c03aefd263460 (author: Steven Masley)
Failure time: 2026-02-25T16:16:32Z

Log evidence:

=== FAIL: provisioner/terraform TestProvision/external-agent (21.32s)
    t.go:111: ... executor: command done  args="[init -no-color -input=false -json]"  error="exit status 1"
    t.go:111: ... init failed  error="exit status 1"
    provision_test.go:1110:
        Error: Should be empty, but was initialize terraform: exit status 1

Notes:

• No panic/OOM/race indicators in this job section.
• Terraform init stderr output still not present in logs, so root cause remains unclear (likely transient init/provider download issue).