{"answer":"I have everything I need. Here are the defects I can point at a specific line for:\n\n---\n\n🔴 `bug` services/proxy/src/routes/admin.rs:76: The on-demand sweep route calls `app.sweeper.sweep(dry_run)` directly and never acquires the `running` mutex — only `Sweeper::run()` (sweep.rs:83) locks it — so a manual `POST /v1/admin/cache/sweep` runs concurrently with the interval sweep, and both decide removals from a shared `remaining` total, deleting up to twice the bytes needed and taking the store far below the ceiling (the exact failure sweep.rs:10-12's \"one sweep at a time\" comment says the mutex exists to prevent).\n\n🟠 `bug` services/proxy/src/sweep.rs:91: `clear_partials` unconditionally unlinks every file in `incoming`, including partial writes of fetches actively streaming right now (`BlobWriter` holds its temp file open there until commit, per store.rs:171-180) — a sweep during a long download deletes the in-progress file, which then commits to a dangling path or fails, so a client request gets a 500 because the timer fired mid-fetch; the doc comment's claim that \"a file in `incoming` is a fetch that is not coming back\" is false for any fetch in flight.\n\n🟠 `bug` services/proxy/src/metrics.rs:94: `values()` loads `sweep_bytes_reclaimed` fifth and `sweep_blobs_removed` sixth, but `COUNTERS` lists `cairn_proxy_sweep_blobs_removed_total` fifth and `cairn_proxy_sweep_bytes_reclaimed_total` sixth — so the two sweep metrics are permanently rendered under each other's names, silently swapping every reported value (the exact failure the comment above says the pairing exists to prevent).\n\n🟠 `performance` services/proxy/src/routes/admin.rs:76: `sweep()` is synchronous — it walks the whole store with blocking `fs` calls, and `referenced()` additionally reads and JSON-parses every index entry file — so calling it from the axum handler blocks the worker thread for the duration of a full scan of a large store, stalling all other requests (the same blocking walk also runs on the timer at main.rs:116); the \"synchronous walk costs less\" rationale in sweep.rs only holds if it were dispatched to `spawn_blocking`.\n\n🟡 `bug` services/proxy/src/sweep.rs:140: `forget(&index, &gone)` runs even on a dry run (sweep.rs:90's `dry_run` gate only covers blob and partial removal), so `POST /v1/admin/cache/sweep?dry_run=true` permanently deletes index entries — directly contradicting the documented \"reports what a sweep would reclaim without removing anything\" and forcing refetches/re-registration for those coordinates.\n\n🟡 `bug` services/proxy/src/sweep.rs:135: after a failed `fs::remove_file` (logged at :130) the code still does `bytes += candidate.size; removed += 1` unconditionally, so `Reclaimed` and the `cairn_proxy_sweep_bytes_reclaimed_total`/`blobs_removed_total` counters report space as reclaimed that is still on disk — the metric operations docs tell operators to alert on.\n\n🔵 `bug` services/proxy/src/config.rs:83: `Duration::from_hours(1)` and `Duration::from_mins(15)` (also used at :84 and in tests at :350-351) are nightly-only std APIs, while services/proxy/rust-toolchain.toml pins `channel = \"stable\"` — the crate will not compile on the pinned toolchain once that gate hits stable Rust.","auth":{"mode":"api_key"},"effort":"high","elapsed_secs":140.496,"error":null,"error_kind":null,"instructions":[],"model":"moonshotai/kimi-k3","ok":true,"sandbox":{"backend":"macOS Seatbelt","denied_read_roots":["/Users/bart.smykla@konghq.com/Projects/github.com/smykla-skalski/benchee/subjects"],"environment":["HOME","LANG","LC_ALL","PATH","TERM","TMPDIR"],"mode":"read-only","network":"denied","protected_write_roots":["/private/var/folders/d1/tvmyp5cs1gz38rltf390ddpw0000gn/T/benchee-agent-yDHvPr/.git","/private/var/folders/d1/tvmyp5cs1gz38rltf390ddpw0000gn/T/benchee-agent-yDHvPr/.afi","/private/var/folders/d1/tvmyp5cs1gz38rltf390ddpw0000gn/T/benchee-agent-yDHvPr/.agents","/private/var/folders/d1/tvmyp5cs1gz38rltf390ddpw0000gn/T/benchee-agent-yDHvPr/.codex","/private/var/folders/d1/tvmyp5cs1gz38rltf390ddpw0000gn/T/benchee-agent-yDHvPr/AGENTS.md","/private/var/folders/d1/tvmyp5cs1gz38rltf390ddpw0000gn/T/benchee-agent-yDHvPr/CLAUDE.md"],"readable_paths":["/"],"readable_roots":["/private/var/folders/d1/tvmyp5cs1gz38rltf390ddpw0000gn/T/benchee-agent-yDHvPr","/bin","/sbin","/usr/bin","/usr/sbin","/usr/lib","/usr/libexec","/usr/share","/System/Library","/Library/Apple","/Library/Filesystems/NetFSPlugins","/Library/Preferences","/private/etc","/private/var/db/timezone","/private/var/db/DarwinDirectory/local/recordStore.data","/private/var/select/developer_dir","/private/var/select/sh","/opt/homebrew/bin","/opt/homebrew/Cellar","/opt/homebrew/etc/gitconfig","/opt/homebrew/lib","/opt/homebrew/opt","/usr/local/bin","/Applications/Xcode.app/Contents/Developer","/Applications/Xcode.app/Contents","/Users/bart.smykla@konghq.com/.local/bin/afi"],"writable_roots":["/private/var/folders/d1/tvmyp5cs1gz38rltf390ddpw0000gn/T/afi-sandbox-pR5BEK"]},"schema_version":1,"source":"openrouter","sources":[{"auth":{"mode":"api_key"},"source":"openrouter","usage":{"cache_read_tokens":169983,"cache_write_tokens":0,"cost_usd":0.338561,"estimated_tokens":0,"input_tokens":35851,"output_tokens":1815,"reasoning_tokens":8134,"requests":7,"total_tokens":215783}}],"system_prompt":{"file":null,"mode":"builtin"},"tools":["read_file","write_file","edit_file","list_dir","search_files","glob_files","run_bash","wait_background"],"usage":{"budget":{"converged":false,"hard_ratio":0.95,"limit_usd":12.0,"soft_ratio":0.8,"spent_usd":0.338561,"stopped":false},"cache_read_tokens":169983,"cache_write_tokens":0,"cost_usd":0.338561,"estimated_tokens":0,"input_tokens":35851,"output_tokens":1815,"reasoning_tokens":8134,"refused_by_approval":0,"refused_by_policy":0,"refused_tool_calls":0,"requests":7,"total_tokens":215783}}