[INFO] fetching crate mcp-langbase-reasoning 0.2.0...
[INFO] checking mcp-langbase-reasoning-0.2.0 against 1.95.0-beta.7 for beta-1.95-4
[INFO] extracting crate mcp-langbase-reasoning 0.2.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate mcp-langbase-reasoning 0.2.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mcp-langbase-reasoning 0.2.0
[INFO] tweaked toml for crates.io crate mcp-langbase-reasoning 0.2.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mcp-langbase-reasoning 0.2.0 on toolchain 1.95.0-beta.7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0-beta.7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mcp-langbase-reasoning 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0-beta.7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0-beta.7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bfb8523a8cccbf2b8e800f4468f910e0de9a3d0aabc25b814d5a83120ca32ff6
[INFO] running `Command { std: "docker" "start" "-a" "bfb8523a8cccbf2b8e800f4468f910e0de9a3d0aabc25b814d5a83120ca32ff6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bfb8523a8cccbf2b8e800f4468f910e0de9a3d0aabc25b814d5a83120ca32ff6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfb8523a8cccbf2b8e800f4468f910e0de9a3d0aabc25b814d5a83120ca32ff6", kill_on_drop: false }`
[INFO] [stdout] bfb8523a8cccbf2b8e800f4468f910e0de9a3d0aabc25b814d5a83120ca32ff6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0-beta.7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 652712ab904666dfba6cbae14e2e4e03bafb65eba32f45f8d9b11f806752e69a
[INFO] running `Command { std: "docker" "start" "-a" "652712ab904666dfba6cbae14e2e4e03bafb65eba32f45f8d9b11f806752e69a", kill_on_drop: false }`
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[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/self_improvement_test.rs:285:9
[INFO] [stdout]     |
[INFO] [stdout] 285 |     let mut diagnosis = mock_diagnosis();
[INFO] [stdout]     |         ----^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `selection`
[INFO] [stdout]    --> tests/self_improvement_pipes_test.rs:326:10
[INFO] [stdout]     |
[INFO] [stdout] 326 |     let (selection, metrics) = result.unwrap();
[INFO] [stdout]     |          ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_selection`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `metrics`
[INFO] [stdout]    --> tests/self_improvement_pipes_test.rs:569:20
[INFO] [stdout]     |
[INFO] [stdout] 569 |     let (learning, metrics) = result.unwrap();
[INFO] [stdout]     |                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_metrics`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 31s
[INFO] running `Command { std: "docker" "inspect" "652712ab904666dfba6cbae14e2e4e03bafb65eba32f45f8d9b11f806752e69a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "652712ab904666dfba6cbae14e2e4e03bafb65eba32f45f8d9b11f806752e69a", kill_on_drop: false }`
[INFO] [stdout] 652712ab904666dfba6cbae14e2e4e03bafb65eba32f45f8d9b11f806752e69a