[INFO] cloning repository https://github.com/Nadybot/highway
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nadybot/highway" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNadybot%2Fhighway", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNadybot%2Fhighway'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f8f218adbdc65bb5b30bac85551796d0e6f70065
[INFO] testing Nadybot/highway against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNadybot%2Fhighway" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nadybot/highway on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/Nadybot/highway
[INFO] finished tweaking git repo https://github.com/Nadybot/highway
[INFO] tweaked toml for git repo https://github.com/Nadybot/highway written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/Nadybot/highway already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/Gelbpunkt/tokio-tungstenite`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror-impl v1.0.28
[INFO] [stderr]   Downloaded thiserror v1.0.28
[INFO] [stderr]   Downloaded password-hash v0.3.0
[INFO] [stderr]   Downloaded base64ct v1.0.1
[INFO] [stderr]   Downloaded blake2 v0.9.2
[INFO] [stderr]   Downloaded argon2 v0.3.0
[INFO] [stderr]   Downloaded simdutf8 v0.1.3
[INFO] [stderr]   Downloaded leaky-bucket-lite v0.2.2
[INFO] [stderr]   Downloaded simd-json v0.4.7
[INFO] [stderr]   Downloaded hashbrown v0.7.2
[INFO] [stderr]   Downloaded value-trait v0.2.8
[INFO] [stderr]   Downloaded halfbrown v0.1.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d904433124bd4cc4a21c9661b7eeca0dec832aa33ea22d6d675d4b2791f0cf87
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d904433124bd4cc4a21c9661b7eeca0dec832aa33ea22d6d675d4b2791f0cf87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d904433124bd4cc4a21c9661b7eeca0dec832aa33ea22d6d675d4b2791f0cf87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d904433124bd4cc4a21c9661b7eeca0dec832aa33ea22d6d675d4b2791f0cf87", kill_on_drop: false }`
[INFO] [stdout] d904433124bd4cc4a21c9661b7eeca0dec832aa33ea22d6d675d4b2791f0cf87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f86ed3c17b91486d0161d5adb9474ea6a641032656ab7cd316a0f8cc8e38f6be
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f86ed3c17b91486d0161d5adb9474ea6a641032656ab7cd316a0f8cc8e38f6be", kill_on_drop: false }`
[INFO] [stderr]    Compiling base64ct v1.0.1
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling input_buffer v0.4.0
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling dashmap v4.0.2
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.28
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling password-hash v0.3.0
[INFO] [stderr]    Compiling blake2 v0.9.2
[INFO] [stderr]    Compiling argon2 v0.3.0
[INFO] [stderr]    Compiling thiserror v1.0.28
[INFO] [stderr]    Compiling tungstenite v0.13.0
[INFO] [stderr]    Compiling leaky-bucket-lite v0.2.2
[INFO] [stderr]    Compiling tokio-tungstenite v0.14.0 (https://github.com/Gelbpunkt/tokio-tungstenite#4d2f2b58)
[INFO] [stderr]    Compiling highway v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(once_cell)]
[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 `highway` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f86ed3c17b91486d0161d5adb9474ea6a641032656ab7cd316a0f8cc8e38f6be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f86ed3c17b91486d0161d5adb9474ea6a641032656ab7cd316a0f8cc8e38f6be", kill_on_drop: false }`
[INFO] [stdout] f86ed3c17b91486d0161d5adb9474ea6a641032656ab7cd316a0f8cc8e38f6be