[INFO] fetching crate skyline 0.1.0...
[INFO] testing skyline-0.1.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate skyline 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate skyline 0.1.0 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 crates.io crate skyline 0.1.0
[INFO] finished tweaking crates.io crate skyline 0.1.0
[INFO] tweaked toml for crates.io crate skyline 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nnsdk v0.1.0
[INFO] [stderr]   Downloaded skyline_macro v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] bbceae4f02fd7d22a195e7f0227fc9d25e5b1f78b0f7416fc4bf09b7312bee28
[INFO] running `Command { std: "docker" "start" "-a" "bbceae4f02fd7d22a195e7f0227fc9d25e5b1f78b0f7416fc4bf09b7312bee28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bbceae4f02fd7d22a195e7f0227fc9d25e5b1f78b0f7416fc4bf09b7312bee28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbceae4f02fd7d22a195e7f0227fc9d25e5b1f78b0f7416fc4bf09b7312bee28", kill_on_drop: false }`
[INFO] [stdout] bbceae4f02fd7d22a195e7f0227fc9d25e5b1f78b0f7416fc4bf09b7312bee28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stdout] 8e51a42316729b8dff73e02c377f0a523aa71f8fb9fabb3e3b49f393d53316fb
[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" "8e51a42316729b8dff73e02c377f0a523aa71f8fb9fabb3e3b49f393d53316fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc-nnsdk v0.0.1
[INFO] [stderr]    Compiling skyline_macro v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-nnsdk-0.0.1/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(untagged_unions)]
[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 `libc-nnsdk` 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" "8e51a42316729b8dff73e02c377f0a523aa71f8fb9fabb3e3b49f393d53316fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e51a42316729b8dff73e02c377f0a523aa71f8fb9fabb3e3b49f393d53316fb", kill_on_drop: false }`
[INFO] [stdout] 8e51a42316729b8dff73e02c377f0a523aa71f8fb9fabb3e3b49f393d53316fb