[INFO] fetching crate hexga_engine_events 0.0.10-beta.16...
[INFO] testing hexga_engine_events-0.0.10-beta.16 against 1.90.0 for beta-1.91-3
[INFO] extracting crate hexga_engine_events 0.0.10-beta.16 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate hexga_engine_events 0.0.10-beta.16
[INFO] finished tweaking crates.io crate hexga_engine_events 0.0.10-beta.16
[INFO] tweaked toml for crates.io crate hexga_engine_events 0.0.10-beta.16 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate hexga_engine_events 0.0.10-beta.16 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate hexga_engine_events 0.0.10-beta.16 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hexga_math v0.0.10-beta.16
[INFO] [stderr]   Downloaded hexga_array v0.0.10-beta.16
[INFO] [stderr]   Downloaded default_is_triple_underscore v0.2.0
[INFO] [stderr]   Downloaded hexga_core v0.0.10-beta.16
[INFO] [stderr]   Downloaded hexga_io_derive v0.0.10-beta.16
[INFO] [stderr]   Downloaded hexga_io v0.0.10-beta.16
[INFO] [stderr]   Downloaded hexga_map_on v0.0.10-beta.16
[INFO] [stderr]   Downloaded hexga_number v0.0.10-beta.16
[INFO] [stderr]   Downloaded hexga_typedef v0.0.10-beta.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc873fd25dafa5573b6f6ab8b1c0afb1767eb50152df3f38efbfa68d60128053
[INFO] running `Command { std: "docker" "start" "-a" "fc873fd25dafa5573b6f6ab8b1c0afb1767eb50152df3f38efbfa68d60128053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc873fd25dafa5573b6f6ab8b1c0afb1767eb50152df3f38efbfa68d60128053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc873fd25dafa5573b6f6ab8b1c0afb1767eb50152df3f38efbfa68d60128053", kill_on_drop: false }`
[INFO] [stdout] fc873fd25dafa5573b6f6ab8b1c0afb1767eb50152df3f38efbfa68d60128053
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c51dea423dd3372d27cc151067ae6a917b71184ce1a903a94893159d4ea01ad
[INFO] running `Command { std: "docker" "start" "-a" "4c51dea423dd3372d27cc151067ae6a917b71184ce1a903a94893159d4ea01ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling hexga_map_on v0.0.10-beta.16
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling default_is_triple_underscore v0.2.0
[INFO] [stderr]    Compiling hexga_typedef v0.0.10-beta.16
[INFO] [stderr]    Compiling hexga_number v0.0.10-beta.16
[INFO] [stderr]    Compiling hexga_array v0.0.10-beta.16
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling hexga_io_derive v0.0.10-beta.16
[INFO] [stderr]    Compiling hexga_core v0.0.10-beta.16
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/hexga_core-0.0.10-beta.16/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(get_disjoint_mut_helpers)]
[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 `hexga_core` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4c51dea423dd3372d27cc151067ae6a917b71184ce1a903a94893159d4ea01ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c51dea423dd3372d27cc151067ae6a917b71184ce1a903a94893159d4ea01ad", kill_on_drop: false }`
[INFO] [stdout] 4c51dea423dd3372d27cc151067ae6a917b71184ce1a903a94893159d4ea01ad