[INFO] cloning repository https://github.com/AnActualEmerald/beryl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AnActualEmerald/beryl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnActualEmerald%2Fberyl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnActualEmerald%2Fberyl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 76ecf870a648bddb84880f6edae9d761f0f05aa0
[INFO] testing AnActualEmerald/beryl against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnActualEmerald%2Fberyl" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AnActualEmerald/beryl on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AnActualEmerald/beryl
[INFO] finished tweaking git repo https://github.com/AnActualEmerald/beryl
[INFO] tweaked toml for git repo https://github.com/AnActualEmerald/beryl written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/AnActualEmerald/beryl already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7260d1678eebc44f8b63d646d5e3b6bf0f02bedd6da6e089ae625e08f6d4d0fc
[INFO] running `Command { std: "docker" "start" "-a" "7260d1678eebc44f8b63d646d5e3b6bf0f02bedd6da6e089ae625e08f6d4d0fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7260d1678eebc44f8b63d646d5e3b6bf0f02bedd6da6e089ae625e08f6d4d0fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7260d1678eebc44f8b63d646d5e3b6bf0f02bedd6da6e089ae625e08f6d4d0fc", kill_on_drop: false }`
[INFO] [stdout] 7260d1678eebc44f8b63d646d5e3b6bf0f02bedd6da6e089ae625e08f6d4d0fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2184bddcc965be75b9d368d9b9dceaea8bc3b3dfb26f3004f5d9429755e7614f
[INFO] running `Command { std: "docker" "start" "-a" "2184bddcc965be75b9d368d9b9dceaea8bc3b3dfb26f3004f5d9429755e7614f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling siphasher v0.3.5
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling pico-args v0.4.1
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling ena v0.14.0
[INFO] [stderr]    Compiling lalrpop-util v0.19.5
[INFO] [stderr]    Compiling itertools v0.10.0
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling string_cache v0.8.1
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling terminal_size v0.1.17
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling termios v0.3.3
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling console v0.12.0
[INFO] [stderr]    Compiling directories v3.0.2
[INFO] [stderr]    Compiling dirs-next v1.0.2
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling lalrpop v0.19.5
[INFO] [stderr]    Compiling rustyline v6.3.0
[INFO] [stderr]    Compiling BerylScript v0.0.6 (https://github.com/AnActualEmerald/BerylScript.git?branch=LALRPOP#e4baccf6)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/berylscript-48da61a211f73814/e4baccf/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `BerylScript`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "2184bddcc965be75b9d368d9b9dceaea8bc3b3dfb26f3004f5d9429755e7614f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2184bddcc965be75b9d368d9b9dceaea8bc3b3dfb26f3004f5d9429755e7614f", kill_on_drop: false }`
[INFO] [stdout] 2184bddcc965be75b9d368d9b9dceaea8bc3b3dfb26f3004f5d9429755e7614f