[INFO] cloning repository https://github.com/deinferno/iwled-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/deinferno/iwled-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdeinferno%2Fiwled-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdeinferno%2Fiwled-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 697c7578b2048d5451b296387b9b7144c24384fa
[INFO] testing deinferno/iwled-rs against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdeinferno%2Fiwled-rs" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/deinferno/iwled-rs on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/deinferno/iwled-rs
[INFO] finished tweaking git repo https://github.com/deinferno/iwled-rs
[INFO] tweaked toml for git repo https://github.com/deinferno/iwled-rs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/deinferno/iwled-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/deinferno/nl80211.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sysfs-class v0.1.3
[INFO] [stderr]   Downloaded rust-ini v0.15.3
[INFO] [stderr]   Downloaded numtoa v0.2.3
[INFO] [stderr]   Downloaded neli v0.4.4
[INFO] [stderr]   Downloaded buffering v0.4.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] d5a27e1561253ddf0faddd1984fb84e4e20df1a4f1b46e4800c209dd0ad10e9a
[INFO] running `Command { std: "docker" "start" "-a" "d5a27e1561253ddf0faddd1984fb84e4e20df1a4f1b46e4800c209dd0ad10e9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5a27e1561253ddf0faddd1984fb84e4e20df1a4f1b46e4800c209dd0ad10e9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5a27e1561253ddf0faddd1984fb84e4e20df1a4f1b46e4800c209dd0ad10e9a", kill_on_drop: false }`
[INFO] [stdout] d5a27e1561253ddf0faddd1984fb84e4e20df1a4f1b46e4800c209dd0ad10e9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f35a8217d809e2f9642f3323422fcf4d0d2a7a1dace05a91c42badff07d54aa
[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" "0f35a8217d809e2f9642f3323422fcf4d0d2a7a1dace05a91c42badff07d54aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling buffering v0.4.2
[INFO] [stderr]    Compiling anyhow v1.0.32
[INFO] [stderr]    Compiling hex v0.4.2
[INFO] [stderr]    Compiling numtoa v0.2.3
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]    Compiling sysfs-class v0.1.3
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling neli v0.4.4
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling nl80211 v0.0.2 (https://github.com/deinferno/nl80211.git?branch=master#c4caba12)
[INFO] [stderr]    Compiling dlv-list v0.2.2
[INFO] [stderr]    Compiling ordered-multimap v0.2.4
[INFO] [stderr]    Compiling rust-ini v0.15.3
[INFO] [stderr]    Compiling iwled-rs 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(clamp)]
[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 `iwled-rs`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "0f35a8217d809e2f9642f3323422fcf4d0d2a7a1dace05a91c42badff07d54aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f35a8217d809e2f9642f3323422fcf4d0d2a7a1dace05a91c42badff07d54aa", kill_on_drop: false }`
[INFO] [stdout] 0f35a8217d809e2f9642f3323422fcf4d0d2a7a1dace05a91c42badff07d54aa