fix(otelite): honor traces endpoint env semantics by schickling-assistant · Pull Request #778 · overengineeringstudio/effect-utils

schickling-assistant · 2026-06-11T07:55:30Z

Problem

PR #777 added env-backed otelite test harness support, but review caught one OTLP/HTTP endpoint semantics bug after the PR had already merged: withEnv({ endpointVar: "OTEL_EXPORTER_OTLP_TRACES_ENDPOINT" }) wrote the otelite base endpoint. Per-signal OTLP endpoint variables are consumed as full URLs, so a subprocess using that variable would POST to the receiver root instead of /v1/traces.

Goal

Make env-backed harness tests work with the standard per-signal traces endpoint variable while preserving the existing base-endpoint behavior for OTEL_EXPORTER_OTLP_ENDPOINT and custom base endpoint variables.

Decisions

Special-case only OTEL_EXPORTER_OTLP_TRACES_ENDPOINT, because that is the standard traces per-signal variable with full-URL semantics.
Reuse the existing otlpTracesUrl helper so the /v1/traces suffix stays one source of truth.
Add regression coverage in the existing environment restoration test rather than introducing a subprocess fixture.

Verification

Locally passed:

devenv shell env OTEL_MODE=off dt test:utils-dev --no-tui
devenv shell env OTEL_MODE=off dt ts:check --no-tui
devenv shell env OTEL_MODE=off dt lint:check --no-tui

The OTEL_MODE=off override is local-only: this shell has OTEL_MODE=system but no otel CLI, which otherwise blocks devenv shell entry before repo tests run.

Complexity

No new abstraction beyond a tiny endpoint-value helper in the harness.

Concerns

Custom non-standard endpoint variable names still receive the base endpoint. That matches the previous custom-env behavior and avoids guessing semantics from arbitrary names.

Friction & bottlenecks

PR #777 merged while the review fix was being prepared, so this is split into a follow-up PR instead of landing on the original branch.

Follow-ups

None.

References

Follow-up to #777. Addresses the unresolved Codex review thread on #777 about OTEL_EXPORTER_OTLP_TRACES_ENDPOINT semantics.

Posted on behalf of @schickling

field	value
`agent_name`	🎡 co2-vortex
`agent_session_id`	c2daf5cb-6048-4845-8bda-c73ca840df5c
`agent_tool`	Codex CLI
`agent_tool_version`	0.137.0
`agent_runtime`	Codex CLI 0.137.0
`agent_model`	unknown
`runtime_profile`	/nix/store/4p78dsfk8riqcgk91zzjlgraibyf1hd4-coding-agent-runtime-profile/share/coding-agents/profile.json
`skills_manifest`	/nix/store/cly1vi1qvxfyk37gmdk4qw4j33zrfpny-agent-skills-corpus/share/agent-skills/manifest.json
`worktree`	effect-utils/schickling/2026-06-11-otelite-test-harness
`machine`	dev3
`tooling_profile`	dotfiles@e7e383b

github-actions · 2026-06-11T08:01:10Z

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github-actions · 2026-06-11T08:07:29Z

CI Measurements

partial - advisory gate - readiness partial (17/26 enabled observations gateable) - commit 7da2aa1 - protocol devenv-perf-warm-median-v2

No regressions. 1 probe got faster; 23 neutral or ungated rows are collapsed below.

SVG source

devenv / quality gates

What changed?	Group	Probe	Baseline -> current	Raw change	Impact	Confidence
faster	devenv / quality gates	Warm cached check:quick	3.611 s -> 3.319 s	-0.292 s / -8.1%	-0.24x	paired n=5, 25-75% delta -4.147 s..-0.088 s

nix / closures / packages

What changed?	Group	Probe	Baseline -> current	Raw change	Impact	Confidence
unchanged	nix / closures / packages	Nix sources closure size	0 B -> 0 B	+0 B / n/a	n/a	unknown, baseline n=22, current n=1
unchanged	nix / closures / packages	Nix sources closure size	0 B -> 0 B	+0 B / n/a	n/a	unknown, baseline n=22, current n=1
unchanged	nix / closures / packages	Nix sources closure size	0 B -> 0 B	+0 B / n/a	n/a	unknown, baseline n=22, current n=1
unchanged	nix / closures / packages	Node / pnpm closure size	0 B -> 0 B	+0 B / n/a	n/a	unknown, baseline n=22, current n=1
unchanged	nix / closures / packages	Node / pnpm closure size	0 B -> 0 B	+0 B / n/a	n/a	unknown, baseline n=22, current n=1
unchanged	nix / closures / packages	Node / pnpm closure size	0 B -> 0 B	+0 B / n/a	n/a	unknown, baseline n=22, current n=1
unchanged	nix / closures / packages	Rust closure size	0 B -> 0 B	+0 B / n/a	n/a	unknown, baseline n=22, current n=1
unchanged	nix / closures / packages	Rust closure size	0 B -> 0 B	+0 B / n/a	n/a	unknown, baseline n=22, current n=1
unchanged	nix / closures / packages	Rust closure size	0 B -> 0 B	+0 B / n/a	n/a	unknown, baseline n=22, current n=1

Unchanged / 0-impact measurements (16)

These rows had compatible baseline data, but their semantic impact rounded to 0.00x because the movement was below the configured budget, below the noise floor, or inside the robust noise band.

devenv / devenv cli

Group	Probe	Baseline -> current	Raw change	Impact	Gate	Evidence	Why hidden
devenv / devenv cli	devenv processes --help	0.022 s -> 0.021 s	-0.001 s / -4.5%	0.00x	yes	paired n=9, 25-75% delta -0.002 s..0 s	Too small to matter
devenv / devenv cli	devenv tasks list	0.043 s -> 0.043 s	+0 s / 0%	0.00x	yes	paired n=9, 25-75% delta -0.003 s..0.002 s	Too small to matter

devenv / devenv shell

Group	Probe	Baseline -> current	Raw change	Impact	Gate	Evidence	Why hidden
devenv / devenv shell	Warm shell eval	1.903 s -> 1.88 s	-0.023 s / -1.2%	0.00x	yes	paired n=5, 25-75% delta -0.06 s..-0.02 s	Too small to matter

devenv / genie

Group	Probe	Baseline -> current	Raw change	Impact	Gate	Evidence	Why hidden
devenv / genie	Genie run task	1.231 s -> 1.177 s	-0.054 s / -4.4%	0.00x	yes	paired n=5, 25-75% delta -0.054 s..-0.023 s	Too small to matter
devenv / genie	Genie check direct	5.281 s -> 5.276 s	-0.005 s / -0.1%	0.00x	yes	paired n=5, 25-75% delta -0.005 s..0.025 s	Too small to matter

devenv / quality gates

Group	Probe	Baseline -> current	Raw change	Impact	Gate	Evidence	Why hidden
devenv / quality gates	Forced check:quick	11.805 s -> 11.763 s	-0.042 s / -0.4%	0.00x	yes	paired n=3, 25-75% delta -0.394 s..-0.021 s	Too small to matter

devenv / workspace setup

Group	Probe	Baseline -> current	Raw change	Impact	Gate	Evidence	Why hidden
devenv / workspace setup	pnpm install task	0.741 s -> 0.744 s	+0.003 s / 0.4%	0.00x	yes	paired n=5, 25-75% delta -0.052 s..0.005 s	Too small to matter

nix / closures / packages

Group	Probe	Baseline -> current	Raw change	Impact	Gate	Evidence	Why hidden
nix / closures / packages	Total closure size	535.4 MiB -> 535.8 MiB	+487.7 KiB / 0.1%	0.00x	yes	noise_floor, baseline n=22, current n=1	Too small to matter
nix / closures / packages	Total serialized NAR size	535.4 MiB -> 535.8 MiB	+487.7 KiB / 0.1%	0.00x	yes	within_budget, baseline n=21, current n=1	Slightly higher, ok
nix / closures / packages	Total closure size	156.3 MiB -> 156.3 MiB	+4.9 KiB / 0%	0.00x	yes	noise_floor, baseline n=22, current n=1	Too small to matter
nix / closures / packages	Total serialized NAR size	156.3 MiB -> 156.3 MiB	+4.9 KiB / 0%	0.00x	yes	within_budget, baseline n=21, current n=1	Slightly higher, ok
nix / closures / packages	Total closure path count	79 count -> 79 count	+0 count / 0%	0.00x	yes	noise_floor, baseline n=22, current n=1	Too small to matter
nix / closures / packages	Total closure path count	5 count -> 5 count	+0 count / 0%	0.00x	yes	noise_floor, baseline n=22, current n=1	Too small to matter
nix / closures / packages	Total closure path count	8 count -> 8 count	+0 count / 0%	0.00x	yes	noise_floor, baseline n=22, current n=1	Too small to matter
nix / closures / packages	Total closure size	144.4 MiB -> 144.4 MiB	+0 B / 0%	0.00x	yes	noise_floor, baseline n=22, current n=1	Too small to matter
nix / closures / packages	Total serialized NAR size	144.4 MiB -> 144.4 MiB	+0 B / 0%	0.00x	yes	noise_floor, baseline n=21, current n=1	Too small to matter

Diagnostic / ungated measurements (7)

source / effect-utils

Group	Probe	Current	Baseline	Impact	Gate	Reason	Evidence
source / effect-utils	Genie runtime lines	19809 lines	19423 lines	diagnostic	disabled	Diagnostic only	diagnostic, baseline n=23, current n=66
source / effect-utils	Genie CI workflow helpers lines	7418 lines	7318 lines	diagnostic	disabled	Diagnostic only	diagnostic, baseline n=23, current n=9
source / effect-utils	Genie runtime files	66 count	64 count	diagnostic	disabled	Diagnostic only	diagnostic, baseline n=23, current n=66
source / effect-utils	Nix workspace tools lines	3632 lines	3631 lines	diagnostic	disabled	Diagnostic only	diagnostic, baseline n=23, current n=14
source / effect-utils	Genie CI workflow helpers files	9 count	9 count	diagnostic	disabled	Diagnostic only	diagnostic, baseline n=23, current n=9
source / effect-utils	Nix workspace tools files	14 count	14 count	diagnostic	disabled	Diagnostic only	diagnostic, baseline n=23, current n=14

devenv / devenv shell

Group	Probe	Current	Baseline	Impact	Gate	Reason	Evidence
devenv / devenv shell	Shell eval with OTEL trace	24.583 s	n/a	n/a	missing_baseline	No baseline yet	missing_baseline, baseline n=0, current n=1

All measurements

Status	Gate	Target	Observation	Dimensions	Baseline	Current	Delta	Ratio	Impact
pass	yes	Dev shell	Warm cached check:quick	aggregation=median devenvRev=2cf62a010000b70f15c78a72761fad7c9e6fb47a measuredSampleCount=5 measurementProtocol=devenv-perf-warm-median-v2 otelServiceName=devenv-perf-ci pairedOrderProtocol=balanced-seeded-alternating-v1 pairedOrderSeed=27332476724-1-4c6d5438a367ebdc6a7b2fe89a4f4297be599a67 pairedSampleCount=5 phase=warm probe=task_check_quick_warm probeLabel=Warm cached check:quick sampleCount=11 status=0 taskCacheMode=warm warmupCount=1 workload=cached-no-op	3.611 s	3.319 s	-0.292 s	-8.1%	-0.24x
pass	yes	Genie package	Total closure size	bucket=total	535.4 MiB	535.8 MiB	+487.7 KiB	0.1%	0.00x
pass	yes	Genie package	Total serialized NAR size	bucket=total sizeKind=nar	535.4 MiB	535.8 MiB	+487.7 KiB	0.1%	0.00x
pass	yes	oxlint npm package	Total closure size	bucket=total	156.3 MiB	156.3 MiB	+4.9 KiB	0%	0.00x
pass	yes	oxlint npm package	Total serialized NAR size	bucket=total sizeKind=nar	156.3 MiB	156.3 MiB	+4.9 KiB	0%	0.00x
pass	disabled	effect-utils repository	Genie runtime lines	scope=genie_runtime	19423 lines	19809 lines	+386 lines	2%	diagnostic
pass	disabled	effect-utils repository	Genie CI workflow helpers lines	scope=genie_ci_workflow	7318 lines	7418 lines	+100 lines	1.4%	diagnostic
pass	disabled	effect-utils repository	Genie runtime files	scope=genie_runtime	64 count	66 count	+2 count	3.1%	diagnostic
pass	disabled	effect-utils repository	Nix workspace tools lines	scope=nix_workspace_tools	3631 lines	3632 lines	+1 lines	0%	diagnostic
pass	yes	Dev shell	Genie run task	aggregation=median devenvRev=2cf62a010000b70f15c78a72761fad7c9e6fb47a measuredSampleCount=5 measurementProtocol=devenv-perf-warm-median-v2 otelServiceName=devenv-perf-ci pairedOrderProtocol=balanced-seeded-alternating-v1 pairedOrderSeed=27332476724-1-4c6d5438a367ebdc6a7b2fe89a4f4297be599a67 pairedSampleCount=5 phase=warm probe=task_genie_run probeLabel=Genie run task sampleCount=11 status=0 warmupCount=1	1.231 s	1.177 s	-0.054 s	-4.4%	0.00x
pass	yes	Dev shell	Forced check:quick	aggregation=median devenvRev=2cf62a010000b70f15c78a72761fad7c9e6fb47a measuredSampleCount=3 measurementProtocol=devenv-perf-warm-median-v2 otelServiceName=devenv-perf-ci pairedOrderProtocol=balanced-seeded-alternating-v1 pairedOrderSeed=27332476724-1-4c6d5438a367ebdc6a7b2fe89a4f4297be599a67 pairedSampleCount=3 phase=warm probe=task_check_quick_forced probeLabel=Forced check:quick sampleCount=6 status=0 taskCacheMode=refresh warmupCount=0 workload=forced-task-cache	11.805 s	11.763 s	-0.042 s	-0.4%	0.00x
pass	yes	Dev shell	Warm shell eval	aggregation=median devenvRev=2cf62a010000b70f15c78a72761fad7c9e6fb47a measuredSampleCount=5 measurementProtocol=devenv-perf-warm-median-v2 otelServiceName=devenv-perf-ci pairedOrderProtocol=balanced-seeded-alternating-v1 pairedOrderSeed=27332476724-1-4c6d5438a367ebdc6a7b2fe89a4f4297be599a67 pairedSampleCount=5 phase=warm probe=shell_eval_warm probeLabel=Warm shell eval sampleCount=11 status=0 warmupCount=1	1.903 s	1.88 s	-0.023 s	-1.2%	0.00x
pass	yes	Dev shell	Genie check direct	aggregation=median devenvRev=2cf62a010000b70f15c78a72761fad7c9e6fb47a measuredSampleCount=5 measurementProtocol=devenv-perf-warm-median-v2 otelServiceName=devenv-perf-ci pairedOrderProtocol=balanced-seeded-alternating-v1 pairedOrderSeed=27332476724-1-4c6d5438a367ebdc6a7b2fe89a4f4297be599a67 pairedSampleCount=5 phase=warm probe=genie_check_direct probeLabel=Genie check direct sampleCount=11 status=0 warmupCount=1	5.281 s	5.276 s	-0.005 s	-0.1%	0.00x
pass	yes	Dev shell	pnpm install task	aggregation=median devenvRev=2cf62a010000b70f15c78a72761fad7c9e6fb47a measuredSampleCount=5 measurementProtocol=devenv-perf-warm-median-v2 otelServiceName=devenv-perf-ci pairedOrderProtocol=balanced-seeded-alternating-v1 pairedOrderSeed=27332476724-1-4c6d5438a367ebdc6a7b2fe89a4f4297be599a67 pairedSampleCount=5 phase=warm probe=task_pnpm_install probeLabel=pnpm install task sampleCount=11 status=0 warmupCount=1	0.741 s	0.744 s	+0.003 s	0.4%	0.00x
pass	yes	Dev shell	devenv processes --help	aggregation=median devenvRev=2cf62a010000b70f15c78a72761fad7c9e6fb47a measuredSampleCount=9 measurementProtocol=devenv-perf-warm-median-v2 otelServiceName=devenv-perf-ci pairedOrderProtocol=balanced-seeded-alternating-v1 pairedOrderSeed=27332476724-1-4c6d5438a367ebdc6a7b2fe89a4f4297be599a67 pairedSampleCount=9 phase=warm probe=processes_help probeLabel=devenv processes --help sampleCount=19 status=0 warmupCount=1	0.022 s	0.021 s	-0.001 s	-4.5%	0.00x
pass	yes	Dev shell	devenv tasks list	aggregation=median devenvRev=2cf62a010000b70f15c78a72761fad7c9e6fb47a measuredSampleCount=9 measurementProtocol=devenv-perf-warm-median-v2 otelServiceName=devenv-perf-ci pairedOrderProtocol=balanced-seeded-alternating-v1 pairedOrderSeed=27332476724-1-4c6d5438a367ebdc6a7b2fe89a4f4297be599a67 pairedSampleCount=9 phase=warm probe=tasks_list probeLabel=devenv tasks list sampleCount=19 status=0 warmupCount=1	0.043 s	0.043 s	+0 s	0%	0.00x
pass	disabled	effect-utils repository	Genie CI workflow helpers files	scope=genie_ci_workflow	9 count	9 count	+0 count	0%	diagnostic
unknown	missing_baseline	Genie package	Nix sources closure size	bucket=nix-sources	0 B	0 B	+0 B	n/a	n/a
unknown	missing_baseline	Megarepo package	Nix sources closure size	bucket=nix-sources	0 B	0 B	+0 B	n/a	n/a
unknown	missing_baseline	oxlint npm package	Nix sources closure size	bucket=nix-sources	0 B	0 B	+0 B	n/a	n/a
pass	disabled	effect-utils repository	Nix workspace tools files	scope=nix_workspace_tools	14 count	14 count	+0 count	0%	diagnostic
unknown	missing_baseline	Genie package	Node / pnpm closure size	bucket=node	0 B	0 B	+0 B	n/a	n/a
unknown	missing_baseline	Megarepo package	Node / pnpm closure size	bucket=node	0 B	0 B	+0 B	n/a	n/a
unknown	missing_baseline	oxlint npm package	Node / pnpm closure size	bucket=node	0 B	0 B	+0 B	n/a	n/a
unknown	missing_baseline	Genie package	Rust closure size	bucket=rust	0 B	0 B	+0 B	n/a	n/a
unknown	missing_baseline	Megarepo package	Rust closure size	bucket=rust	0 B	0 B	+0 B	n/a	n/a
unknown	missing_baseline	oxlint npm package	Rust closure size	bucket=rust	0 B	0 B	+0 B	n/a	n/a
pass	yes	Genie package	Total closure path count	bucket=total	79 count	79 count	+0 count	0%	0.00x
pass	yes	Megarepo package	Total closure path count	bucket=total	5 count	5 count	+0 count	0%	0.00x
pass	yes	oxlint npm package	Total closure path count	bucket=total	8 count	8 count	+0 count	0%	0.00x
pass	yes	Megarepo package	Total closure size	bucket=total	144.4 MiB	144.4 MiB	+0 B	0%	0.00x
pass	yes	Megarepo package	Total serialized NAR size	bucket=total sizeKind=nar	144.4 MiB	144.4 MiB	+0 B	0%	0.00x
missing_baseline	missing_baseline	Dev shell	Shell eval with OTEL trace	aggregation=median devenvRev=2cf62a010000b70f15c78a72761fad7c9e6fb47a measuredSampleCount=1 measurementProtocol=devenv-perf-warm-median-v2 otelServiceName=devenv-perf-ci pairedOrderProtocol=balanced-seeded-alternating-v1 pairedOrderSeed=27332476724-1-4c6d5438a367ebdc6a7b2fe89a4f4297be599a67 pairedSampleCount=1 phase=warm probe=shell_eval_traced probeLabel=Shell eval with OTEL trace sampleCount=2 status=0 warmupCount=0	n/a	24.583 s	n/a	n/a	n/a

Source-of-truth JSON

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    "attempt": "1",
    "url": "https://github.com/overengineeringstudio/effect-utils/actions/runs/27332476724"
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  "baseline": null,
  "protocol": "devenv-perf-warm-median-v2",
  "chart": {
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  "measurements": [
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      "id": "task_check_quick_warm",
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      "path": [
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      "groupPath": [
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      "status": "pass",
      "direction": "improved",
      "gateable": true,
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      "comparisonMode": "paired",
      "unit": "seconds",
      "baseline": 3.611,
      "current": 3.319,
      "delta": -0.29200000000000026,
      "ratio": 0.9191359734145665,
      "semanticImpactScore": -0.24369980614788123,
      "semanticImpactKind": "improvement",
      "baselineSources": 5,
      "currentSamples": 5,
      "pairedSamples": 5,
      "evidenceDeltaLower": -4.147,
      "evidenceDeltaUpper": -0.088,
      "pairedEvidenceQuantile": 0.25,
      "dimensions": {
        "workload": "cached-no-op",
        "taskCacheMode": "warm",
        "probe": "task_check_quick_warm",
        "probeLabel": "Warm cached check:quick",
        "status": 0,
        "sampleCount": 11,
        "warmupCount": 1,
        "measuredSampleCount": 5,
        "pairedSampleCount": 5,
        "pairedOrderProtocol": "balanced-seeded-alternating-v1",
        "pairedOrderSeed": "27332476724-1-4c6d5438a367ebdc6a7b2fe89a4f4297be599a67",
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        "aggregation": "median",
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        "devenvRev": "2cf62a010000b70f15c78a72761fad7c9e6fb47a",
        "otelServiceName": "devenv-perf-ci"
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      "id": "nix.closure.nar_size",
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      "group": "nix / closures / packages",
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      "gateable": true,
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      "baselineSources": 22,
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      "dimensions": {
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      "groupPath": [
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      "direction": "regressed",
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    {
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      "path": [
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      "groupPath": [
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      "status": "pass",
      "direction": "unchanged",
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}

fix(otelite): honor traces endpoint env semantics

7da2aa1

schickling-assistant force-pushed the schickling/2026-06-11-otelite-traces-endpoint-env branch from ae77b02 to 7da2aa1 Compare June 11, 2026 07:56

github-actions Bot added a commit that referenced this pull request Jun 11, 2026

Update CI measurement chart SVG for PR #778

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github-actions Bot added a commit that referenced this pull request Jun 11, 2026

Update CI measurement chart PNG for PR #778

4363ad7

github-actions Bot added a commit that referenced this pull request Jun 11, 2026

Update dark CI measurement chart PNG for PR #778

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fix(otelite): honor traces endpoint env semantics#778

fix(otelite): honor traces endpoint env semantics#778
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