[INFO] fetching crate mcp-preview 0.2.5...
[INFO] testing mcp-preview-0.2.5 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate mcp-preview 0.2.5 into /workspace/builds/worker-3-tc2/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-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mcp-preview 0.2.5 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df62015e7df0e10bea1a0c6e5a5ea989e7d6d92379ed744a0f30a5b77025964d
[INFO] running `Command { std: "docker" "start" "-a" "df62015e7df0e10bea1a0c6e5a5ea989e7d6d92379ed744a0f30a5b77025964d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df62015e7df0e10bea1a0c6e5a5ea989e7d6d92379ed744a0f30a5b77025964d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df62015e7df0e10bea1a0c6e5a5ea989e7d6d92379ed744a0f30a5b77025964d", kill_on_drop: false }`
[INFO] [stdout] df62015e7df0e10bea1a0c6e5a5ea989e7d6d92379ed744a0f30a5b77025964d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86a35efe0904afdfa80e19780067611c8a99665faa43f36cd82ecff443588c08
[INFO] running `Command { std: "docker" "start" "-a" "86a35efe0904afdfa80e19780067611c8a99665faa43f36cd82ecff443588c08", 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 rustls v0.23.37
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling rust-embed-utils v8.11.0
[INFO] [stderr]    Compiling http-range-header v0.4.2
[INFO] [stderr]    Compiling axum-core v0.5.6
[INFO] [stderr]    Compiling futures-executor v0.3.32
[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 mime_guess v2.0.5
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling futures v0.3.32
[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 tungstenite v0.28.0
[INFO] [stderr]    Compiling rust-embed v8.11.0
[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 18.88s
[INFO] running `Command { std: "docker" "inspect" "86a35efe0904afdfa80e19780067611c8a99665faa43f36cd82ecff443588c08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86a35efe0904afdfa80e19780067611c8a99665faa43f36cd82ecff443588c08", kill_on_drop: false }`
[INFO] [stdout] 86a35efe0904afdfa80e19780067611c8a99665faa43f36cd82ecff443588c08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56dbfff60e2b376c0f89bef386ec71d0f1b987a20f4b53014baa9829c2e7c99e
[INFO] running `Command { std: "docker" "start" "-a" "56dbfff60e2b376c0f89bef386ec71d0f1b987a20f4b53014baa9829c2e7c99e", 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 14.83s
[INFO] running `Command { std: "docker" "inspect" "56dbfff60e2b376c0f89bef386ec71d0f1b987a20f4b53014baa9829c2e7c99e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56dbfff60e2b376c0f89bef386ec71d0f1b987a20f4b53014baa9829c2e7c99e", kill_on_drop: false }`
[INFO] [stdout] 56dbfff60e2b376c0f89bef386ec71d0f1b987a20f4b53014baa9829c2e7c99e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 72b165f44c09f89fe4dc180711e34c48e76624ab29bcc6cef16358a07fb5c7bc
[INFO] running `Command { std: "docker" "start" "-a" "72b165f44c09f89fe4dc180711e34c48e76624ab29bcc6cef16358a07fb5c7bc", 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" "72b165f44c09f89fe4dc180711e34c48e76624ab29bcc6cef16358a07fb5c7bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72b165f44c09f89fe4dc180711e34c48e76624ab29bcc6cef16358a07fb5c7bc", kill_on_drop: false }`
[INFO] [stdout] 72b165f44c09f89fe4dc180711e34c48e76624ab29bcc6cef16358a07fb5c7bc