[INFO] fetching crate mechtron-host 0.3.14...
[INFO] testing mechtron-host-0.3.14 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate mechtron-host 0.3.14 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate mechtron-host 0.3.14
[INFO] finished tweaking crates.io crate mechtron-host 0.3.14
[INFO] tweaked toml for crates.io crate mechtron-host 0.3.14 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mechtron-host 0.3.14 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 264 packages to latest compatible versions
[INFO] [stderr]       Adding bincode v1.3.3 (available: v2.0.1)
[INFO] [stderr]       Adding wasmer v2.3.0 (available: v6.0.1)
[INFO] [stderr]       Adding wasmer-compiler-singlepass v2.3.0 (available: v6.0.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f72b4b8ec8f05996e9fe62dec7fee83fb639448f08565d1db62f5799b879001
[INFO] running `Command { std: "docker" "start" "-a" "1f72b4b8ec8f05996e9fe62dec7fee83fb639448f08565d1db62f5799b879001", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f72b4b8ec8f05996e9fe62dec7fee83fb639448f08565d1db62f5799b879001", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f72b4b8ec8f05996e9fe62dec7fee83fb639448f08565d1db62f5799b879001", kill_on_drop: false }`
[INFO] [stdout] 1f72b4b8ec8f05996e9fe62dec7fee83fb639448f08565d1db62f5799b879001
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3f688fe73978b97403439bd15274ab533e1e9d9689b8654cff8e68f6c89fb5a
[INFO] running `Command { std: "docker" "start" "-a" "b3f688fe73978b97403439bd15274ab533e1e9d9689b8654cff8e68f6c89fb5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling ahash v0.7.8
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling rkyv v0.7.45
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling seahash v4.1.0
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling serde_bytes v0.11.19
[INFO] [stderr]    Compiling wasmparser v0.83.0
[INFO] [stderr]    Compiling darling_core v0.21.3
[INFO] [stderr]    Compiling ptr_meta_derive v0.1.4
[INFO] [stderr]    Compiling rkyv_derive v0.7.45
[INFO] [stderr]    Compiling loupe-derive v0.1.3
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling enum-iterator-derive v0.7.0
[INFO] [stderr]    Compiling yoke v0.8.0
[INFO] [stderr]    Compiling zerovec v0.11.4
[INFO] [stderr]    Compiling zerotrie v0.2.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling corosensei v0.1.4
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.82.3
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.82.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling memmap2 v0.5.10
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling fallible-iterator v0.2.0
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling cranelift-entity v0.82.3
[INFO] [stderr]    Compiling object v0.37.3
[INFO] [stderr]    Compiling enum-iterator v0.7.0
[INFO] [stderr]    Compiling ptr_meta v0.1.4
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling regalloc v0.0.34
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling form_urlencoded v1.2.2
[INFO] [stderr]    Compiling cranelift-bforest v0.82.3
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling brownstone v1.1.0
[INFO] [stderr]    Compiling wasm-encoder v0.239.0
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling tinystr v0.8.1
[INFO] [stderr]    Compiling potential_utf v0.1.3
[INFO] [stderr]    Compiling indent_write v2.2.0
[INFO] [stderr]    Compiling leb128 v0.2.5
[INFO] [stderr]    Compiling icu_collections v2.0.0
[INFO] [stderr]    Compiling joinery v2.1.0
[INFO] [stderr]    Compiling icu_locale_core v2.0.0
[INFO] [stderr]    Compiling loupe v0.1.3
[INFO] [stderr]    Compiling gimli v0.26.2
[INFO] [stderr]    Compiling object v0.28.4
[INFO] [stderr]    Compiling icu_provider v2.0.0
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling bytecount v0.6.9
[INFO] [stderr]    Compiling wasmer-compiler-cranelift v2.3.0
[INFO] [stderr]    Compiling wast v239.0.0
[INFO] [stderr]    Compiling icu_normalizer v2.0.0
[INFO] [stderr]    Compiling icu_properties v2.0.1
[INFO] [stderr]    Compiling nom-supreme v0.6.0
[INFO] [stderr]    Compiling nom_locate v4.2.0
[INFO] [stderr]    Compiling cranelift-codegen v0.82.3
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]    Compiling darling_macro v0.21.3
[INFO] [stderr]    Compiling dynasm v1.2.3
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling darling v0.21.3
[INFO] [stderr]    Compiling enumset_derive v0.14.0
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling yansi v0.5.1
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling idna_adapter v1.2.1
[INFO] [stderr]    Compiling idna v1.1.0
[INFO] [stderr]    Compiling ariadne v0.1.5
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]    Compiling cosmic-nom v0.3.14
[INFO] [stderr]    Compiling url v2.5.7
[INFO] [stderr]    Compiling dashmap v5.5.3
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling wasmer-derive v2.3.0
[INFO] [stderr]    Compiling enum-ordinalize v3.1.15
[INFO] [stderr]    Compiling cosmic-macros-primitive v0.3.14
[INFO] [stderr]    Compiling semver v1.0.27
[INFO] [stderr]    Compiling enumset v1.1.10
[INFO] [stderr]    Compiling convert_case v0.5.0
[INFO] [stderr]    Compiling strum v0.24.1
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling uuid v1.18.1
[INFO] [stderr]    Compiling oneshot v0.1.11
[INFO] [stderr]    Compiling backtrace v0.3.76
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling wasmer-types v2.3.0
[INFO] [stderr]    Compiling validator v0.15.0
[INFO] [stderr]    Compiling wasmer-compiler v2.3.0
[INFO] [stderr]    Compiling wat v1.239.0
[INFO] [stderr]    Compiling cosmic-space v0.3.14
[INFO] [stderr]    Compiling wasmer-artifact v2.3.0
[INFO] [stderr]    Compiling wasmer-object v2.3.0
[INFO] [stderr]    Compiling wasmer-vm v2.3.0
[INFO] [stderr]    Compiling wasmer-engine-universal-artifact v2.3.0
[INFO] [stderr]    Compiling wasmer-engine v2.3.0
[INFO] [stderr]    Compiling wasmer-engine-dylib v2.3.0
[INFO] [stderr]    Compiling wasmer-engine-universal v2.3.0
[INFO] [stderr]    Compiling dynasmrt v1.2.3
[INFO] [stderr]    Compiling wasmer-compiler-singlepass v2.3.0
[INFO] [stderr]    Compiling cranelift-frontend v0.82.3
[INFO] [stderr]    Compiling wasmer v2.3.0
[INFO] [stderr]    Compiling mechtron-host v0.3.14 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 13s
[INFO] running `Command { std: "docker" "inspect" "b3f688fe73978b97403439bd15274ab533e1e9d9689b8654cff8e68f6c89fb5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3f688fe73978b97403439bd15274ab533e1e9d9689b8654cff8e68f6c89fb5a", kill_on_drop: false }`
[INFO] [stdout] b3f688fe73978b97403439bd15274ab533e1e9d9689b8654cff8e68f6c89fb5a
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a63c562d2ab5db12ee0a45afdbe43b7ea46031873eb1c8844508992e99818b2
[INFO] running `Command { std: "docker" "start" "-a" "6a63c562d2ab5db12ee0a45afdbe43b7ea46031873eb1c8844508992e99818b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling mechtron-host v0.3.14 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.97s
[INFO] running `Command { std: "docker" "inspect" "6a63c562d2ab5db12ee0a45afdbe43b7ea46031873eb1c8844508992e99818b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a63c562d2ab5db12ee0a45afdbe43b7ea46031873eb1c8844508992e99818b2", kill_on_drop: false }`
[INFO] [stdout] 6a63c562d2ab5db12ee0a45afdbe43b7ea46031873eb1c8844508992e99818b2
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 94f52b68946ff3872edd7d6b9ad2cc4304835427896e6ca2101d16fdeec9230f
[INFO] running `Command { std: "docker" "start" "-a" "94f52b68946ff3872edd7d6b9ad2cc4304835427896e6ca2101d16fdeec9230f", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mechtron_host-910467c87d5d4a4a)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::test ... ok
[INFO] [stderr]    Doc-tests mechtron_host
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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" "94f52b68946ff3872edd7d6b9ad2cc4304835427896e6ca2101d16fdeec9230f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94f52b68946ff3872edd7d6b9ad2cc4304835427896e6ca2101d16fdeec9230f", kill_on_drop: false }`
[INFO] [stdout] 94f52b68946ff3872edd7d6b9ad2cc4304835427896e6ca2101d16fdeec9230f