[INFO] fetching crate mcp-langbase-reasoning 0.2.0...
[INFO] checking mcp-langbase-reasoning-0.2.0 against master#59fd4ef94daa991e6797b5aa6127e824f3067def for pr-145108-2
[INFO] extracting crate mcp-langbase-reasoning 0.2.0 into /workspace/builds/worker-4-tc1/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-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mcp-langbase-reasoning 0.2.0 on toolchain 59fd4ef94daa991e6797b5aa6127e824f3067def
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+59fd4ef94daa991e6797b5aa6127e824f3067def" "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" "+59fd4ef94daa991e6797b5aa6127e824f3067def" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rsa v0.9.9
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[INFO] [stdout] ca6b121515cb41ad1f374cdc51d08adff75a8284840640777f89a75188985383
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[INFO] running `Command { std: "docker" "rm" "-f" "ca6b121515cb41ad1f374cdc51d08adff75a8284840640777f89a75188985383", kill_on_drop: false }`
[INFO] [stdout] ca6b121515cb41ad1f374cdc51d08adff75a8284840640777f89a75188985383
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+59fd4ef94daa991e6797b5aa6127e824f3067def" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a373ef0d2936061168f551265f779a9c79c9fedabee6facd6ea058a394ce003
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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 17s
[INFO] running `Command { std: "docker" "inspect" "9a373ef0d2936061168f551265f779a9c79c9fedabee6facd6ea058a394ce003", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a373ef0d2936061168f551265f779a9c79c9fedabee6facd6ea058a394ce003", kill_on_drop: false }`
[INFO] [stdout] 9a373ef0d2936061168f551265f779a9c79c9fedabee6facd6ea058a394ce003
