[INFO] fetching crate robot_master_core 0.1.0...
[INFO] testing robot_master_core-0.1.0 against 1.99.0-beta.8 for beta-1.100-2
[INFO] extracting crate robot_master_core 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate robot_master_core 0.1.0
[INFO] finished tweaking crates.io crate robot_master_core 0.1.0
[INFO] tweaked toml for crates.io crate robot_master_core 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate robot_master_core 0.1.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate robot_master_core 0.1.0 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded secrecy v0.10.3
[INFO] [stderr]   Downloaded internal-iterator v0.2.3
[INFO] [stderr]   Downloaded decorum v0.3.1
[INFO] [stderr]   Downloaded cast_trait v0.1.2
[INFO] [stderr]   Downloaded chess v3.2.0
[INFO] [stderr]   Downloaded arimaa_engine_step v1.0.1
[INFO] [stderr]   Downloaded board-game v0.8.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 91f207dfb277b83d52e3099d59b7a3c9997cb0c4cdad3180dc156e5eba9962a0
[INFO] running `Command { std: "docker" "start" "91f207dfb277b83d52e3099d59b7a3c9997cb0c4cdad3180dc156e5eba9962a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91f207dfb277b83d52e3099d59b7a3c9997cb0c4cdad3180dc156e5eba9962a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "91f207dfb277b83d52e3099d59b7a3c9997cb0c4cdad3180dc156e5eba9962a0" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91f207dfb277b83d52e3099d59b7a3c9997cb0c4cdad3180dc156e5eba9962a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "91f207dfb277b83d52e3099d59b7a3c9997cb0c4cdad3180dc156e5eba9962a0" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rustc-demangle v0.1.27
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling object v0.37.3
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling regex-syntax v0.8.10
[INFO] [stderr]    Compiling anyhow v1.0.102
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]    Compiling unicode-segmentation v1.13.2
[INFO] [stderr]    Compiling convert_case v0.10.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling backtrace v0.3.76
[INFO] [stderr]    Compiling cpufeatures v0.3.0
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling chacha20 v0.10.0
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling derive_more-impl v2.1.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling arimaa_engine_step v1.0.1
[INFO] [stderr]    Compiling rayon v1.12.0
[INFO] [stderr]    Compiling rand v0.8.6
[INFO] [stderr]    Compiling decorum v0.3.1
[INFO] [stderr]    Compiling rand_xoshiro v0.6.0
[INFO] [stderr]    Compiling chess v3.2.0
[INFO] [stderr]    Compiling internal-iterator v0.2.3
[INFO] [stderr]    Compiling cast_trait v0.1.2
[INFO] [stderr]    Compiling zeroize v1.8.2
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling rand v0.10.1
[INFO] [stderr]    Compiling secrecy v0.10.3
[INFO] [stderr]    Compiling derive_more v2.1.1
[INFO] [stderr]    Compiling uuid v1.23.1
[INFO] [stderr]    Compiling board-game v0.8.2
[INFO] [stderr]    Compiling robot_master_core v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(default_field_values)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `robot_master_core` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "91f207dfb277b83d52e3099d59b7a3c9997cb0c4cdad3180dc156e5eba9962a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91f207dfb277b83d52e3099d59b7a3c9997cb0c4cdad3180dc156e5eba9962a0", kill_on_drop: false }`
[INFO] [stdout] 91f207dfb277b83d52e3099d59b7a3c9997cb0c4cdad3180dc156e5eba9962a0
