[INFO] fetching crate reductionml-core 0.1.0...
[INFO] checking reductionml-core-0.1.0 against try#94382f34384023f3d2062a34ccf0bb6b4d44a75a for mutual-coercion
[INFO] extracting crate reductionml-core 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate reductionml-core 0.1.0
[INFO] finished tweaking crates.io crate reductionml-core 0.1.0
[INFO] tweaked toml for crates.io crate reductionml-core 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate reductionml-core 0.1.0 on toolchain 94382f34384023f3d2062a34ccf0bb6b4d44a75a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "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" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 78 packages to latest compatible versions
[INFO] [stderr]       Adding derive_more v0.99.20 (available: v2.1.1)
[INFO] [stderr]       Adding flexbuffers v2.0.0 (available: v25.12.19)
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.14.0)
[INFO] [stderr]       Adding schemars v0.8.22 (available: v1.2.0)
[INFO] [stderr]       Adding serde_default v0.1.0 (available: v0.2.0)
[INFO] [stderr]       Adding serde_json_borrow v0.1.4 (available: v0.9.0)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[INFO] [stderr]       Adding twox-hash v1.6.3 (available: v2.1.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f407dfb35c1c26c68ba1936a973f19207111eeedc40f1ce12418ef96f8f0e29f
[INFO] running `Command { std: "docker" "start" "-a" "f407dfb35c1c26c68ba1936a973f19207111eeedc40f1ce12418ef96f8f0e29f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f407dfb35c1c26c68ba1936a973f19207111eeedc40f1ce12418ef96f8f0e29f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f407dfb35c1c26c68ba1936a973f19207111eeedc40f1ce12418ef96f8f0e29f", kill_on_drop: false }`
[INFO] [stdout] f407dfb35c1c26c68ba1936a973f19207111eeedc40f1ce12418ef96f8f0e29f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3aa464657f4509c2366f5e535943ec5cf0de6db423e7c95e9c3b4c2919d43c9
[INFO] running `Command { std: "docker" "start" "-a" "b3aa464657f4509c2366f5e535943ec5cf0de6db423e7c95e9c3b4c2919d43c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.105
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling quote v1.0.43
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking cfg-if v1.0.4
[INFO] [stderr]    Compiling hashbrown v0.16.1
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling zerocopy v0.8.33
[INFO] [stderr]    Compiling zmij v1.0.13
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling typeid v1.0.3
[INFO] [stderr]     Checking itoa v1.0.17
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking memchr v2.7.6
[INFO] [stderr]    Compiling erased-serde v0.4.9
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling typetag v0.2.21
[INFO] [stderr]     Checking smallvec v1.15.1
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[INFO] [stderr]     Checking lock_api v0.4.14
[INFO] [stderr]     Checking dyn-clone v1.0.20
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[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking unsafe-libyaml v0.2.11
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking fast-float v0.2.0
[INFO] [stderr]    Compiling indexmap v2.13.0
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[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking getrandom v0.2.17
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.5
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[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling serde_derive_internals v0.29.1
[INFO] [stderr]    Compiling num_enum_derive v0.5.11
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling schemars_derive v0.8.22
[INFO] [stderr]    Compiling typetag-impl v0.2.21
[INFO] [stderr]    Compiling derive_more v0.99.20
[INFO] [stderr]     Checking num_enum v0.5.11
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling serde_default v0.1.0
[INFO] [stderr]     Checking serde_yaml v0.9.34+deprecated
[INFO] [stderr]     Checking flexbuffers v2.0.0
[INFO] [stderr]     Checking serde_json_borrow v0.1.4
[INFO] [stderr]     Checking reductionml-core v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> src/reduction_registry.rs:1:34
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BTreeMap, HashMap};
[INFO] [stdout]   |                                  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> src/reduction_registry.rs:1:34
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BTreeMap, HashMap};
[INFO] [stdout]   |                                  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]    --> src/reduction.rs:283:1
[INFO] [stdout]     |
[INFO] [stdout] 283 | #[typetag::serde(tag = "type")]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `ReductionImpl + Send`, found trait `ReductionImpl`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `?` operator cannot convert from `Box<dyn ReductionImpl + Send>` to `Box<dyn ReductionImpl>`
[INFO] [stdout]     = note: expected struct `Box<dyn ReductionImpl>`
[INFO] [stdout]                found struct `Box<dyn ReductionImpl + Send>`
[INFO] [stdout]     = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]    --> src/reduction.rs:283:1
[INFO] [stdout]     |
[INFO] [stdout] 283 | #[typetag::serde(tag = "type")]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `reduction::ReductionImpl + Send`, found trait `reduction::ReductionImpl`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `?` operator cannot convert from `Box<dyn reduction::ReductionImpl + Send>` to `Box<dyn reduction::ReductionImpl>`
[INFO] [stdout]     = note: expected struct `Box<dyn reduction::ReductionImpl>`
[INFO] [stdout]                found struct `Box<dyn reduction::ReductionImpl + Send>`
[INFO] [stdout]     = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chunk`
[INFO] [stdout]   --> src/parsers/text_parser.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         chunk: &'a str,
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_chunk`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chunk`
[INFO] [stdout]   --> src/parsers/text_parser.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         chunk: &'a str,
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_chunk`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `reductionml-core` (lib) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `reductionml-core` (lib test) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "b3aa464657f4509c2366f5e535943ec5cf0de6db423e7c95e9c3b4c2919d43c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3aa464657f4509c2366f5e535943ec5cf0de6db423e7c95e9c3b4c2919d43c9", kill_on_drop: false }`
[INFO] [stdout] b3aa464657f4509c2366f5e535943ec5cf0de6db423e7c95e9c3b4c2919d43c9
