[INFO] fetching crate hexga_array_vec 0.0.11-beta.53...
[INFO] checking hexga_array_vec-0.0.11-beta.53 against 1.95.0 for pr-155915
[INFO] extracting crate hexga_array_vec 0.0.11-beta.53 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate hexga_array_vec 0.0.11-beta.53
[INFO] finished tweaking crates.io crate hexga_array_vec 0.0.11-beta.53
[INFO] tweaked toml for crates.io crate hexga_array_vec 0.0.11-beta.53 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate hexga_array_vec 0.0.11-beta.53 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate hexga_array_vec 0.0.11-beta.53 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hexga_bit_derive v0.0.11-beta.53
[INFO] [stderr]   Downloaded hexga_bit v0.0.11-beta.53
[INFO] [stderr]   Downloaded hexga_core v0.0.11-beta.53
[INFO] [stderr]   Downloaded hexga_map_on v0.0.11-beta.53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 466c2563a7ee0cdfe712e3151f4daa0cd974c3e7100078e97e4a067d0d2bd7fb
[INFO] running `Command { std: "docker" "start" "-a" "466c2563a7ee0cdfe712e3151f4daa0cd974c3e7100078e97e4a067d0d2bd7fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "466c2563a7ee0cdfe712e3151f4daa0cd974c3e7100078e97e4a067d0d2bd7fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "466c2563a7ee0cdfe712e3151f4daa0cd974c3e7100078e97e4a067d0d2bd7fb", kill_on_drop: false }`
[INFO] [stdout] 466c2563a7ee0cdfe712e3151f4daa0cd974c3e7100078e97e4a067d0d2bd7fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 161f960bdb059fd224f9d048d5a2adb8e60b92ce4cf6034a706adbe21457b8d6
[INFO] running `Command { std: "docker" "start" "-a" "161f960bdb059fd224f9d048d5a2adb8e60b92ce4cf6034a706adbe21457b8d6", kill_on_drop: false }`
[INFO] [stderr]     Checking hexga_map_on v0.0.11-beta.53
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling hexga_bit_derive v0.0.11-beta.53
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking hexga_bit v0.0.11-beta.53
[INFO] [stderr]     Checking hexga_core v0.0.11-beta.53
[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-0.0.11-beta.53/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![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" "161f960bdb059fd224f9d048d5a2adb8e60b92ce4cf6034a706adbe21457b8d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "161f960bdb059fd224f9d048d5a2adb8e60b92ce4cf6034a706adbe21457b8d6", kill_on_drop: false }`
[INFO] [stdout] 161f960bdb059fd224f9d048d5a2adb8e60b92ce4cf6034a706adbe21457b8d6