[INFO] fetching crate skg-mcp 0.4.1...
[INFO] testing skg-mcp-0.4.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate skg-mcp 0.4.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate skg-mcp 0.4.1
[INFO] finished tweaking crates.io crate skg-mcp 0.4.1
[INFO] tweaked toml for crates.io crate skg-mcp 0.4.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate skg-mcp 0.4.1 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate skg-mcp 0.4.1 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-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9c55a89576913933b3428cc4bdf01dc1891bc3cba5bff160560d3196c502aa09
[INFO] running `Command { std: "docker" "start" "-a" "9c55a89576913933b3428cc4bdf01dc1891bc3cba5bff160560d3196c502aa09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c55a89576913933b3428cc4bdf01dc1891bc3cba5bff160560d3196c502aa09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c55a89576913933b3428cc4bdf01dc1891bc3cba5bff160560d3196c502aa09", kill_on_drop: false }`
[INFO] [stdout] 9c55a89576913933b3428cc4bdf01dc1891bc3cba5bff160560d3196c502aa09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27f8e12788918c8c8c448c16263d20061985d54afc4bb10f2d02a01b9b909fa5
[INFO] running `Command { std: "docker" "start" "-a" "27f8e12788918c8c8c448c16263d20061985d54afc4bb10f2d02a01b9b909fa5", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling futures-core v0.3.32
[INFO] [stderr]    Compiling itoa v1.0.17
[INFO] [stderr]    Compiling futures-sink v0.3.32
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling futures-task v0.3.32
[INFO] [stderr]    Compiling futures-io v0.3.32
[INFO] [stderr]    Compiling zmij v1.0.21
[INFO] [stderr]    Compiling slab v0.4.12
[INFO] [stderr]    Compiling writeable v0.6.2
[INFO] [stderr]    Compiling litemap v0.8.1
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling httparse v1.10.1
[INFO] [stderr]    Compiling futures-channel v0.3.32
[INFO] [stderr]    Compiling http v1.4.0
[INFO] [stderr]    Compiling once_cell v1.21.3
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[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]    Compiling want v0.3.1
[INFO] [stderr]    Compiling atomic-waker v1.1.2
[INFO] [stderr]    Compiling tower-layer v0.3.3
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling ref-cast v1.0.25
[INFO] [stderr]    Compiling rust_decimal v1.40.0
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[INFO] [stderr]    Compiling memchr v2.8.0
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[INFO] [stderr]    Compiling iana-time-zone v0.1.65
[INFO] [stderr]    Compiling ipnet v2.11.0
[INFO] [stderr]    Compiling rmcp v0.16.0
[INFO] [stderr]    Compiling dyn-clone v1.0.20
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling pastey v0.2.1
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling http-body-util v0.1.3
[INFO] [stderr]    Compiling indexmap v2.13.0
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling mio v1.1.1
[INFO] [stderr]    Compiling socket2 v0.6.2
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling darling_core v0.23.0
[INFO] [stderr]    Compiling serde_derive_internals v0.29.1
[INFO] [stderr]    Compiling zerovec-derive v0.11.2
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]    Compiling futures-macro v0.3.32
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]    Compiling ref-cast-impl v1.0.25
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.1
[INFO] [stderr]    Compiling tokio v1.49.0
[INFO] [stderr]    Compiling schemars_derive v1.2.1
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling zerofrom v0.1.6
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling yoke v0.8.1
[INFO] [stderr]    Compiling zerovec v0.11.5
[INFO] [stderr]    Compiling zerotrie v0.2.3
[INFO] [stderr]    Compiling darling_macro v0.23.0
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling darling v0.23.0
[INFO] [stderr]    Compiling rmcp-macros v0.16.0
[INFO] [stderr]    Compiling tinystr v0.8.2
[INFO] [stderr]    Compiling potential_utf v0.1.4
[INFO] [stderr]    Compiling icu_collections v2.1.1
[INFO] [stderr]    Compiling icu_locale_core v2.1.1
[INFO] [stderr]    Compiling icu_provider v2.1.1
[INFO] [stderr]    Compiling icu_normalizer v2.1.1
[INFO] [stderr]    Compiling icu_properties v2.1.2
[INFO] [stderr]    Compiling chrono v0.4.44
[INFO] [stderr]    Compiling layer0 v0.4.1
[INFO] [stderr]    Compiling futures-executor v0.3.32
[INFO] [stderr]    Compiling sse-stream v0.2.1
[INFO] [stderr]    Compiling futures v0.3.32
[INFO] [stderr]    Compiling idna_adapter v1.2.1
[INFO] [stderr]    Compiling idna v1.1.0
[INFO] [stderr]    Compiling schemars v1.2.1
[INFO] [stderr]    Compiling url v2.5.8
[INFO] [stderr]    Compiling hyper v1.8.1
[INFO] [stderr]    Compiling tower v0.5.3
[INFO] [stderr]    Compiling tokio-util v0.7.18
[INFO] [stderr]    Compiling tokio-stream v0.1.18
[INFO] [stderr]    Compiling process-wrap v9.0.3
[INFO] [stderr]    Compiling tower-http v0.6.8
[INFO] [stderr]    Compiling hyper-util v0.1.20
[INFO] [stderr]    Compiling skg-tool v0.4.1
[INFO] [stderr]    Compiling reqwest v0.13.2
[INFO] [stderr]    Compiling skg-mcp v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 39.99s
[INFO] running `Command { std: "docker" "inspect" "27f8e12788918c8c8c448c16263d20061985d54afc4bb10f2d02a01b9b909fa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27f8e12788918c8c8c448c16263d20061985d54afc4bb10f2d02a01b9b909fa5", kill_on_drop: false }`
[INFO] [stdout] 27f8e12788918c8c8c448c16263d20061985d54afc4bb10f2d02a01b9b909fa5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8175ba5b105b2b3ef5166cf7e9a3c3f9785eb2b97925c17c99c4659ef20cf745
[INFO] running `Command { std: "docker" "start" "-a" "8175ba5b105b2b3ef5166cf7e9a3c3f9785eb2b97925c17c99c4659ef20cf745", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v1.49.0
[INFO] [stderr]    Compiling tower v0.5.3
[INFO] [stderr]    Compiling hyper v1.8.1
[INFO] [stderr]    Compiling tokio-util v0.7.18
[INFO] [stderr]    Compiling tokio-stream v0.1.18
[INFO] [stderr]    Compiling process-wrap v9.0.3
[INFO] [stderr]    Compiling layer0 v0.4.1
[INFO] [stderr]    Compiling hyper-util v0.1.20
[INFO] [stderr]    Compiling tower-http v0.6.8
[INFO] [stderr]    Compiling reqwest v0.13.2
[INFO] [stderr]    Compiling rmcp v0.16.0
[INFO] [stderr]    Compiling skg-tool v0.4.1
[INFO] [stderr]    Compiling skg-mcp v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 29.63s
[INFO] running `Command { std: "docker" "inspect" "8175ba5b105b2b3ef5166cf7e9a3c3f9785eb2b97925c17c99c4659ef20cf745", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8175ba5b105b2b3ef5166cf7e9a3c3f9785eb2b97925c17c99c4659ef20cf745", kill_on_drop: false }`
[INFO] [stdout] 8175ba5b105b2b3ef5166cf7e9a3c3f9785eb2b97925c17c99c4659ef20cf745
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b9828390c6ddbc80a3498993cd0aa5495aa0913e257eea5d4c4fcf38a36976a8
[INFO] running `Command { std: "docker" "start" "-a" "b9828390c6ddbc80a3498993cd0aa5495aa0913e257eea5d4c4fcf38a36976a8", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/skg_mcp-d4edd8100634e618)
[INFO] [stdout] 
[INFO] [stdout] running 36 tests
[INFO] [stdout] test client::tests::integration_connect_and_discover ... ignored
[INFO] [stdout] test client::tests::discover_operators_metadata_extraction ... ok
[INFO] [stdout] test client::tests::mcp_resource_wrapper_missing_description ... ok
[INFO] [stdout] test client::tests::mcp_tool_metadata_extraction ... ok
[INFO] [stdout] test client::tests::discover_operators_preserves_tool_count_logic ... ok
[INFO] [stdout] test client::tests::mcp_prompt_wrapper_missing_description ... ok
[INFO] [stdout] test client::tests::mcp_prompt_wrapper_exposes_metadata ... ok
[INFO] [stdout] test client::tests::mcp_resource_and_prompt_wrapper_are_send_sync ... ok
[INFO] [stdout] test client::tests::mcp_tool_metadata_missing_description ... ok
[INFO] [stdout] test client::tests::mcp_tool_wrapper_is_send_sync ... ok
[INFO] [stdout] test client::tests::tool_budget_tokens_counts_descriptions ... ok
[INFO] [stdout] test error::tests::mcp_error_display ... ok
[INFO] [stdout] test error::tests::mcp_error_from_boxed ... ok
[INFO] [stdout] test client::tests::tool_budget_tokens_empty ... ok
[INFO] [stdout] test error::tests::mcp_error_is_debug ... ok
[INFO] [stdout] test server::tests::mcp_server_constructs ... ok
[INFO] [stdout] test server::tests::mcp_server_constructs_with_state_reader ... ok
[INFO] [stdout] test server::tests::mcp_server_from_operators_constructs ... ok
[INFO] [stdout] test server::tests::mcp_server_with_prompt_no_description ... ok
[INFO] [stdout] test server::tests::server_call_tool_logic_success ... ok
[INFO] [stdout] test server::tests::mcp_server_with_prompt ... ok
[INFO] [stdout] test server::tests::operator_tool_adapter_roundtrip ... ok
[INFO] [stdout] test server::tests::server_call_tool_logic_failure ... ok
[INFO] [stdout] test server::tests::server_handler_get_info_with_prompts_enables_prompts ... ok
[INFO] [stdout] test server::tests::server_call_tool_not_found ... ok
[INFO] [stdout] test server::tests::server_handler_get_info ... ok
[INFO] [stdout] test server::tests::server_handler_get_info_with_state_reader_enables_resources ... ok
[INFO] [stdout] test server::tests::server_handler_list_prompts_none_registered_is_empty ... ok
[INFO] [stdout] test server::tests::server_handler_list_resources_no_reader_returns_empty ... ok
[INFO] [stdout] test server::tests::server_handler_list_tools_empty ... ok
[INFO] [stdout] test server::tests::server_handler_get_prompt_not_found_logic ... ok
[INFO] [stdout] test server::tests::server_handler_list_prompts_returns_registered ... ok
[INFO] [stdout] test server::tests::server_handler_list_tools_with_registered_tool ... ok
[INFO] [stdout] test server::tests::server_handler_get_info_no_optional_capabilities ... ok
[INFO] [stdout] test server::tests::server_handler_read_resource_no_reader_returns_error ... ok
[INFO] [stdout] test client::tests::mcp_resource_wrapper_exposes_metadata ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 35 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.12s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests skg_mcp
[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" "b9828390c6ddbc80a3498993cd0aa5495aa0913e257eea5d4c4fcf38a36976a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9828390c6ddbc80a3498993cd0aa5495aa0913e257eea5d4c4fcf38a36976a8", kill_on_drop: false }`
[INFO] [stdout] b9828390c6ddbc80a3498993cd0aa5495aa0913e257eea5d4c4fcf38a36976a8
