[INFO] fetching crate mcp-preview 0.2.5...
[INFO] testing mcp-preview-0.2.5 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] extracting crate mcp-preview 0.2.5 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate mcp-preview 0.2.5
[INFO] finished tweaking crates.io crate mcp-preview 0.2.5
[INFO] tweaked toml for crates.io crate mcp-preview 0.2.5 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mcp-preview 0.2.5 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mcp-preview 0.2.5 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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] [stderr]   Downloaded pmcp-widget-utils v0.1.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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_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" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e2ae2a361300c6f1f8f3a5201db84a9ebe62b8401ba1d8858ebc7c869fe0db5
[INFO] running `Command { std: "docker" "start" "-a" "1e2ae2a361300c6f1f8f3a5201db84a9ebe62b8401ba1d8858ebc7c869fe0db5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e2ae2a361300c6f1f8f3a5201db84a9ebe62b8401ba1d8858ebc7c869fe0db5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e2ae2a361300c6f1f8f3a5201db84a9ebe62b8401ba1d8858ebc7c869fe0db5", kill_on_drop: false }`
[INFO] [stdout] 1e2ae2a361300c6f1f8f3a5201db84a9ebe62b8401ba1d8858ebc7c869fe0db5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2835705ec93d21ae27647fde26b9d823a2e0e0a6f6925d6d388fd0a573a3081e
[INFO] running `Command { std: "docker" "start" "-a" "2835705ec93d21ae27647fde26b9d823a2e0e0a6f6925d6d388fd0a573a3081e", kill_on_drop: false }`
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling unicase v2.9.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling rustls v0.23.37
[INFO] [stderr]    Compiling rust-embed-utils v8.11.0
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling http-range-header v0.4.2
[INFO] [stderr]    Compiling axum-core v0.5.6
[INFO] [stderr]    Compiling serde_path_to_error v0.1.20
[INFO] [stderr]    Compiling uuid v1.22.0
[INFO] [stderr]    Compiling pmcp-widget-utils v0.1.0
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]    Compiling rust-embed-impl v8.11.0
[INFO] [stderr]    Compiling tokio v1.50.0
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling rust-embed v8.11.0
[INFO] [stderr]    Compiling tungstenite v0.28.0
[INFO] [stderr]    Compiling rustls-platform-verifier v0.6.2
[INFO] [stderr]    Compiling tokio-util v0.7.18
[INFO] [stderr]    Compiling tower v0.5.3
[INFO] [stderr]    Compiling tokio-rustls v0.26.4
[INFO] [stderr]    Compiling tokio-tungstenite v0.28.0
[INFO] [stderr]    Compiling h2 v0.4.13
[INFO] [stderr]    Compiling tower-http v0.6.8
[INFO] [stderr]    Compiling hyper v1.8.1
[INFO] [stderr]    Compiling hyper-util v0.1.20
[INFO] [stderr]    Compiling hyper-rustls v0.27.7
[INFO] [stderr]    Compiling axum v0.8.8
[INFO] [stderr]    Compiling reqwest v0.13.2
[INFO] [stderr]    Compiling mcp-preview v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.40s
[INFO] running `Command { std: "docker" "inspect" "2835705ec93d21ae27647fde26b9d823a2e0e0a6f6925d6d388fd0a573a3081e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2835705ec93d21ae27647fde26b9d823a2e0e0a6f6925d6d388fd0a573a3081e", kill_on_drop: false }`
[INFO] [stdout] 2835705ec93d21ae27647fde26b9d823a2e0e0a6f6925d6d388fd0a573a3081e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 690e1038f657d5b58e988ea41d5d12ba6692e5b211964d500550bb4d212a3ecb
[INFO] running `Command { std: "docker" "start" "-a" "690e1038f657d5b58e988ea41d5d12ba6692e5b211964d500550bb4d212a3ecb", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v1.50.0
[INFO] [stderr]    Compiling tokio-util v0.7.18
[INFO] [stderr]    Compiling tower v0.5.3
[INFO] [stderr]    Compiling tokio-rustls v0.26.4
[INFO] [stderr]    Compiling tokio-tungstenite v0.28.0
[INFO] [stderr]    Compiling tokio-stream v0.1.18
[INFO] [stderr]    Compiling tokio-test v0.4.5
[INFO] [stderr]    Compiling h2 v0.4.13
[INFO] [stderr]    Compiling tower-http v0.6.8
[INFO] [stderr]    Compiling hyper v1.8.1
[INFO] [stderr]    Compiling hyper-util v0.1.20
[INFO] [stderr]    Compiling hyper-rustls v0.27.7
[INFO] [stderr]    Compiling axum v0.8.8
[INFO] [stderr]    Compiling reqwest v0.13.2
[INFO] [stderr]    Compiling mcp-preview v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 15.60s
[INFO] running `Command { std: "docker" "inspect" "690e1038f657d5b58e988ea41d5d12ba6692e5b211964d500550bb4d212a3ecb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "690e1038f657d5b58e988ea41d5d12ba6692e5b211964d500550bb4d212a3ecb", kill_on_drop: false }`
[INFO] [stdout] 690e1038f657d5b58e988ea41d5d12ba6692e5b211964d500550bb4d212a3ecb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 86d5a0d885a1f5a6d7500ceb590252fde7afad27ed1838aa67d09e921acdf1b6
[INFO] running `Command { std: "docker" "start" "-a" "86d5a0d885a1f5a6d7500ceb590252fde7afad27ed1838aa67d09e921acdf1b6", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mcp_preview-3950f7886a02423e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mcp_preview
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "86d5a0d885a1f5a6d7500ceb590252fde7afad27ed1838aa67d09e921acdf1b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86d5a0d885a1f5a6d7500ceb590252fde7afad27ed1838aa67d09e921acdf1b6", kill_on_drop: false }`
[INFO] [stdout] 86d5a0d885a1f5a6d7500ceb590252fde7afad27ed1838aa67d09e921acdf1b6