[INFO] fetching crate notation_model 0.5.0...
[INFO] testing notation_model-0.5.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate notation_model 0.5.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate notation_model 0.5.0 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 notation_model 0.5.0
[INFO] finished tweaking crates.io crate notation_model 0.5.0
[INFO] tweaked toml for crates.io crate notation_model 0.5.0 written to /workspace/builds/worker-14/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stdout] c05719b161c20fc13c09d74d52b2c72fb303475885d5a58fd89c921e4cb2ee4f
[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" "c05719b161c20fc13c09d74d52b2c72fb303475885d5a58fd89c921e4cb2ee4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c05719b161c20fc13c09d74d52b2c72fb303475885d5a58fd89c921e4cb2ee4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c05719b161c20fc13c09d74d52b2c72fb303475885d5a58fd89c921e4cb2ee4f", kill_on_drop: false }`
[INFO] [stdout] c05719b161c20fc13c09d74d52b2c72fb303475885d5a58fd89c921e4cb2ee4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 151c8f060c02687087afa8430daf5c9cf6da0720997c6784a2a8e81acdc5f88a
[INFO] running `Command { std: "docker" "start" "-a" "151c8f060c02687087afa8430daf5c9cf6da0720997c6784a2a8e81acdc5f88a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling getrandom v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling fehler-macros v1.0.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling fehler v1.0.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling serde_arrays v0.1.0
[INFO] [stderr]    Compiling notation_core v0.5.0
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling notation_fretted v0.5.0
[INFO] [stderr]    Compiling notation_guitar v0.5.0
[INFO] [stderr]    Compiling notation_proto v0.5.0
[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/notation_proto-0.5.0/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(arc_new_cyclic)]
[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 `notation_proto` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "151c8f060c02687087afa8430daf5c9cf6da0720997c6784a2a8e81acdc5f88a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "151c8f060c02687087afa8430daf5c9cf6da0720997c6784a2a8e81acdc5f88a", kill_on_drop: false }`
[INFO] [stdout] 151c8f060c02687087afa8430daf5c9cf6da0720997c6784a2a8e81acdc5f88a