[ChrisRackauckas]

🚧 UNREVIEWED — awaiting review by @ChrisRackauckas. Filed by an AI agent running as @ChrisRackauckas; Chris has not seen this.
Harness: Devin CLI 3000.11.92 (diagnosis and fix), Claude Code 2.1.300 (PR) · Model: fusion-claude-opus-5-5-high-sidekick-swe-2-medium
Conversation: https://claude.ai/code/session_01VZjwf7Ux9YtTzwHGHMqnsq (fleet master)

This fixes a failure on the default branch's CI. The diagnosis and the evidence below come from the investigating agent's report; "confirmed by running" and "read in logs" are kept apart there.

Change

• JET = "0.9, 0.10, 0.11" -> "0.9, 0.10, 0.11, 0.12" in test/qa, lib/CanonicalMoments/test/qa, lib/DiscreteMeasures/test/qa, lib/OUQBase/test/qa Project.toml.
• One extra line, needed for resolution: lib/DiscreteMeasures/test/qa/Project.toml SciMLTesting = "1.7" -> "1.7, 2". SciMLTesting 1.x caps JET at 0.11, so with only the JET edit this env still could not resolve on 1.13. The other three envs already used SciMLTesting = "2", and this env's qa.jl calls SciMLTesting the same way they do.

Commands

Groups: QA, CanonicalMoments_QA, DiscreteMeasures_QA, OUQBase_QA (sublibs are routed as {sublib}_{GROUP} by runtests.jl).

BEFORE (main), GROUP=<g> julia +release --project -e 'using Pkg; Pkg.test()' (Julia 1.13.2):

• All 4 groups FAIL at resolve: Unsatisfiable requirements detected for package JET (project allows 0.9-0.11; Julia 1.13 allows only 0.12.0-0.12.3).

AFTER (branch), same command, +release (Julia 1.13.2), JET 0.12.3:

• QA PASS 47/47; CanonicalMoments_QA PASS 21/21; DiscreteMeasures_QA PASS 21/21; OUQBase_QA PASS 21/21.

AFTER (branch), +lts (Julia 1.10.12), JET 0.9.18:

• GROUP=<g> julia +lts --project -e 'using Pkg; Pkg.develop([PackageSpec(path="lib/CanonicalMoments"), PackageSpec(path="lib/DiscreteMeasures"), PackageSpec(path="lib/OUQBase")]); Pkg.test()'
• QA PASS 45/45; CanonicalMoments_QA PASS 19/19; DiscreteMeasures_QA PASS 19/19; OUQBase_QA PASS 19/19.

JET reports

• None. JET 0.12.3 reported no problems, so no code changes were needed.

Caveats

• On Julia 1.10 a plain Pkg.test() fails before runtests.jl with expected package CanonicalMoments to be registered, because Pkg 1.10 ignores [sources] in the umbrella Project.toml. The umbrella Project.toml is unchanged from main, so main should hit the same failure, but I did not run LTS on main to confirm. It is unrelated to JET. I got around it locally by Pkg.develop-ing the three sublibs first (command above). Not fixed here.
• Runic: no .jl files changed, so it was not run. typos on the diff: clean.

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🤖 Posted by an AI agent — harness: Devin CLI 3000.11.92 (fix), Claude Code 2.1.300 (PR) · model: fusion-claude-opus-5-5-high-sidekick-swe-2-medium / claude-opus-5-5
Conversation: https://claude.ai/code/session_01VZjwf7Ux9YtTzwHGHMqnsq (fleet master)

🤖 Generated with Claude Code

Independent review (added by the fleet master)

Risk assessment

• Risk: low
• Blast radius: Four isolated QA environments. No runtime dependency, source, or public API changes; installed users' dependency resolution is unaffected.
• Evidence: Independently inspected General registry Compat.toml and WeakCompat.toml, the complete PR diff and package Project.toml files at head 9341214, and GitHub CI status at 2026-10-15 21:58 UTC. Registry constraints substantiate the required SciMLTesting widening. DiscreteMeasures downgrade tests pass; DiscreteMeasures QA has no result yet because Sublibrary CI remains in its detection job. No local Julia tests or resolver reproduction performed.
• Independent review: codex gpt-6.1-sol rated it low, high confidence on scope and compatibility rationale: the extra widening is necessary to admit JET 0.12 and is confined to QA tooling; execution validation remains pending.
• Merge: auto-merge candidate — focused test-only compatibility update, conditional on required CI passing, including DiscreteMeasures QA.

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🤖 Section added by an AI agent — harness: Claude Code 2.1.300 · model: claude-opus-5-5 (review by codex-cli, gpt-6.1-sol, round 2)
Conversation: https://claude.ai/code/session_01VZjwf7Ux9YtTzwHGHMqnsq