[INFO] fetching crate mcp-core 0.1.50...
[INFO] testing mcp-core-0.1.50 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate mcp-core 0.1.50 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate mcp-core 0.1.50
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate mcp-core 0.1.50
[INFO] tweaked toml for crates.io crate mcp-core 0.1.50 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mcp-core 0.1.50 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mcp-core 0.1.50 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" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4515df6a5b5b8c6e399b55c45d80f48f713a38d32f604475b761aeb4b2613153
[INFO] running `Command { std: "docker" "start" "-a" "4515df6a5b5b8c6e399b55c45d80f48f713a38d32f604475b761aeb4b2613153", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4515df6a5b5b8c6e399b55c45d80f48f713a38d32f604475b761aeb4b2613153", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4515df6a5b5b8c6e399b55c45d80f48f713a38d32f604475b761aeb4b2613153", kill_on_drop: false }`
[INFO] [stdout] 4515df6a5b5b8c6e399b55c45d80f48f713a38d32f604475b761aeb4b2613153
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cef4b9061f20b2dbeacd9a3628147bcba63266af404fd18923dc3c2c3710aa39
[INFO] running `Command { std: "docker" "start" "-a" "cef4b9061f20b2dbeacd9a3628147bcba63266af404fd18923dc3c2c3710aa39", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling litemap v0.7.5
[INFO] [stderr]    Compiling icu_locid_transform_data v1.5.1
[INFO] [stderr]    Compiling writeable v0.5.5
[INFO] [stderr]    Compiling icu_properties_data v1.5.1
[INFO] [stderr]    Compiling icu_normalizer_data v1.5.1
[INFO] [stderr]    Compiling utf16_iter v1.0.5
[INFO] [stderr]    Compiling write16 v1.0.0
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling smallvec v1.15.0
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling anyhow v1.0.98
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling tokio v1.44.2
[INFO] [stderr]    Compiling form_urlencoded v1.2.1
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling synstructure v0.13.1
[INFO] [stderr]    Compiling zerovec-derive v0.10.3
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling icu_provider_macros v1.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]    Compiling async-trait v0.1.88
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.7.5
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling zerofrom v0.1.6
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling yoke v0.7.5
[INFO] [stderr]    Compiling zerovec v0.10.4
[INFO] [stderr]    Compiling tinystr v0.7.6
[INFO] [stderr]    Compiling icu_collections v1.5.0
[INFO] [stderr]    Compiling icu_locid v1.5.0
[INFO] [stderr]    Compiling icu_provider v1.5.0
[INFO] [stderr]    Compiling icu_locid_transform v1.5.0
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling icu_properties v1.5.1
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling icu_normalizer v1.5.0
[INFO] [stderr]    Compiling idna_adapter v1.2.0
[INFO] [stderr]    Compiling idna v1.0.3
[INFO] [stderr]    Compiling url v2.5.4
[INFO] [stderr]    Compiling mcp-core v0.1.50 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.57s
[INFO] running `Command { std: "docker" "inspect" "cef4b9061f20b2dbeacd9a3628147bcba63266af404fd18923dc3c2c3710aa39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cef4b9061f20b2dbeacd9a3628147bcba63266af404fd18923dc3c2c3710aa39", kill_on_drop: false }`
[INFO] [stdout] cef4b9061f20b2dbeacd9a3628147bcba63266af404fd18923dc3c2c3710aa39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] afbbcb051b568d5db8ca045a1d0989915e8a82d671203b72f0bd62cf922605a3
[INFO] running `Command { std: "docker" "start" "-a" "afbbcb051b568d5db8ca045a1d0989915e8a82d671203b72f0bd62cf922605a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling utf8parse v0.2.2
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.1
[INFO] [stderr]    Compiling anstyle-query v1.1.2
[INFO] [stderr]    Compiling colorchoice v1.0.3
[INFO] [stderr]    Compiling anstyle v1.0.10
[INFO] [stderr]    Compiling mio v1.0.3
[INFO] [stderr]    Compiling signal-hook-registry v1.4.5
[INFO] [stderr]    Compiling socket2 v0.5.9
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling serde_derive_internals v0.29.1
[INFO] [stderr]    Compiling schemars v0.8.22
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling clap_lex v0.7.4
[INFO] [stderr]    Compiling anstyle-parse v0.2.6
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling thread_local v1.1.8
[INFO] [stderr]    Compiling nu-ansi-term v0.46.0
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling dyn-clone v1.0.19
[INFO] [stderr]    Compiling home v0.5.11
[INFO] [stderr]    Compiling dotenv v0.15.0
[INFO] [stderr]    Compiling clap_derive v4.5.32
[INFO] [stderr]    Compiling anstream v0.6.18
[INFO] [stderr]    Compiling clap_builder v4.5.37
[INFO] [stderr]    Compiling tokio v1.44.2
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling tracing-subscriber v0.3.19
[INFO] [stderr]    Compiling schemars_derive v0.8.22
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling clap v4.5.37
[INFO] [stderr]    Compiling mcp-core v0.1.50 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 23.85s
[INFO] running `Command { std: "docker" "inspect" "afbbcb051b568d5db8ca045a1d0989915e8a82d671203b72f0bd62cf922605a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afbbcb051b568d5db8ca045a1d0989915e8a82d671203b72f0bd62cf922605a3", kill_on_drop: false }`
[INFO] [stdout] afbbcb051b568d5db8ca045a1d0989915e8a82d671203b72f0bd62cf922605a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 663fbbfe034a76fc87ab5e8dc53b3445f6f7fc5551348a4bddc6b9294c4de74d
[INFO] running `Command { std: "docker" "start" "-a" "663fbbfe034a76fc87ab5e8dc53b3445f6f7fc5551348a4bddc6b9294c4de74d", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mcp_core-c0f3414cbd3fc3f4)
[INFO] [stdout] running 3 tests
[INFO] [stderr]    Doc-tests mcp_core
[INFO] [stdout] test types::tests::test_server_capabilities ... ok
[INFO] [stdout] test types::tests::test_tool_annotations ... ok
[INFO] [stdout] test types::tests::test_text_content ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/transport/client/stdio.rs - transport::client::stdio::ClientStdioTransport (line 32) ... ok
[INFO] [stdout] test src/lib.rs - tool_audio_content (line 158) ... ok
[INFO] [stdout] test src/lib.rs - tool_text_response (line 84) ... ok
[INFO] [stdout] test src/transport/server/stdio.rs - transport::server::stdio::ServerStdioTransport (line 29) ... ok
[INFO] [stdout] test src/lib.rs - tool_resource_content (line 182) ... ok
[INFO] [stdout] test src/lib.rs - tool_text_content (line 112) ... ok
[INFO] [stdout] test src/lib.rs - tool_image_content (line 134) ... ok
[INFO] [stdout] test src/lib.rs - tool_error_response (line 52) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.93s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "663fbbfe034a76fc87ab5e8dc53b3445f6f7fc5551348a4bddc6b9294c4de74d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "663fbbfe034a76fc87ab5e8dc53b3445f6f7fc5551348a4bddc6b9294c4de74d", kill_on_drop: false }`
[INFO] [stdout] 663fbbfe034a76fc87ab5e8dc53b3445f6f7fc5551348a4bddc6b9294c4de74d