[Flaky Test] TestStandAloneRunningSuite/TestOpAMP `signal: killed`

[ebeahan]

Flaky Test

• Test Name: TestStandAloneRunningSuite/TestOpAMP
• Link: https://github.com/elastic/fleet-server/blob/main/testing/e2e/stand_alone_test.go#L640
• Branch: main
• Notes:

Claude Code analysis

The single failing test is TestStandAloneRunningSuite/TestOpAMP. It fails with signal: killed at stand_alone_test.go:659, which is the Require().NoError(err) after the make otelcontribcol call.

The cause is straightforward: the test runs under a 3-minute context timeout (context.WithTimeout(..., 3*time.Minute) at line 603), but it tries to do all of this within that window:

1. Clone the entire opentelemetry-collector-contrib repo (shallow, but still large)
2. Run make otelcontribcol — a full Go compilation of a massive multi-module project
3. Enroll an agent, start the OTel collector, and verify enrollment

Compiling OTel contrib from scratch on a resource-constrained CI agent can easily take 5–15 minutes. When the 3-minute deadline expires, Go's exec.CommandContext sends SIGKILL to the build process, and the temp directory gets cleaned up mid-compile, causing the cascading "no such file or directory" errors seen in the log.

Stack Trace

Error Trace:	/opt/buildkite-agent/builds/bk-agent-prod-gcp-1773340912775914247/elastic/fleet-server/testing/e2e/stand_alone_test.go:659

            				/opt/buildkite-agent/.gvm/versions/go1.25.8.linux.amd64/src/runtime/asm_amd64.s:1693

Error:      	Received unexpected error:

            	signal: killed

Test:       	TestStandAloneRunningSuite/TestOpAMP

[ebeahan]

Opened a PR to increase the timeout from 3m to 5m as a workaround: #6597.

Leaving open to track finding a more optimal fix.

[ycombinator]

The git clone step here takes most of the time, even with --depth 1. The https://github.com/open-telemetry/opentelemetry-collector-contrib/ repo is quite large. That said, we considered downloading a release artifact instead but that's even larger. I don't know if there's a third better option here to reduce the time taken; open to ideas.