[INFO] cloning repository https://github.com/oeb25/web-dm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oeb25/web-dm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foeb25%2Fweb-dm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foeb25%2Fweb-dm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0502e79b45db71017a096ca03dcd4333ed395dd8
[INFO] testing oeb25/web-dm against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foeb25%2Fweb-dm" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oeb25/web-dm on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/oeb25/web-dm
[INFO] finished tweaking git repo https://github.com/oeb25/web-dm
[INFO] tweaked toml for git repo https://github.com/oeb25/web-dm written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/oeb25/web-dm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded stdweb-internal-macros v0.2.2
[INFO] [stderr]   Downloaded stdweb v0.4.10
[INFO] [stderr]   Downloaded stdweb-internal-runtime v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0b8a086907b6db8d0df0c8774e3388c1378023c49bfddf53f2966bfa9ec3eb3b
[INFO] running `Command { std: "docker" "start" "-a" "0b8a086907b6db8d0df0c8774e3388c1378023c49bfddf53f2966bfa9ec3eb3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b8a086907b6db8d0df0c8774e3388c1378023c49bfddf53f2966bfa9ec3eb3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b8a086907b6db8d0df0c8774e3388c1378023c49bfddf53f2966bfa9ec3eb3b", kill_on_drop: false }`
[INFO] [stdout] 0b8a086907b6db8d0df0c8774e3388c1378023c49bfddf53f2966bfa9ec3eb3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 07904e01d307f5285a7d37617b487cdaf5ede753652f175ca007d8e650d02115
[INFO] running `Command { std: "docker" "start" "-a" "07904e01d307f5285a7d37617b487cdaf5ede753652f175ca007d8e650d02115", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.2
[INFO] [stderr]    Compiling byteorder v1.2.6
[INFO] [stderr]    Compiling base-x v0.2.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.9
[INFO] [stderr]    Compiling indexmap v1.0.1
[INFO] [stderr]    Compiling discard v1.0.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling log v0.4.5
[INFO] [stderr]    Compiling stdweb-internal-macros v0.2.2
[INFO] [stderr]    Compiling stdweb v0.4.10
[INFO] [stderr]    Compiling syn v0.15.13
[INFO] [stderr]    Compiling bytes v0.4.10
[INFO] [stderr]    Compiling solver v0.1.0 (/opt/rustwide/workdir/solver)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> solver/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_syntax, slice_patterns, exclusive_range_pattern)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[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 `solver` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "07904e01d307f5285a7d37617b487cdaf5ede753652f175ca007d8e650d02115", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07904e01d307f5285a7d37617b487cdaf5ede753652f175ca007d8e650d02115", kill_on_drop: false }`
[INFO] [stdout] 07904e01d307f5285a7d37617b487cdaf5ede753652f175ca007d8e650d02115