[INFO] fetching crate command-macros-plugin 0.2.7...
[INFO] testing command-macros-plugin-0.2.7 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate command-macros-plugin 0.2.7 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate command-macros-plugin 0.2.7 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 command-macros-plugin 0.2.7
[INFO] finished tweaking crates.io crate command-macros-plugin 0.2.7
[INFO] tweaked toml for crates.io crate command-macros-plugin 0.2.7 written to /workspace/builds/worker-11/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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] ef54dd42ab8c75606a4d25decf109930a42f320fff7138568a040039fe1d9721
[INFO] running `Command { std: "docker" "start" "-a" "ef54dd42ab8c75606a4d25decf109930a42f320fff7138568a040039fe1d9721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef54dd42ab8c75606a4d25decf109930a42f320fff7138568a040039fe1d9721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef54dd42ab8c75606a4d25decf109930a42f320fff7138568a040039fe1d9721", kill_on_drop: false }`
[INFO] [stdout] ef54dd42ab8c75606a4d25decf109930a42f320fff7138568a040039fe1d9721
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 07dcce56e8cc25a1c9b9f4f122727ea8398a5c8f9057ff8cc28b3ef75ea6c90a
[INFO] running `Command { std: "docker" "start" "-a" "07dcce56e8cc25a1c9b9f4f122727ea8398a5c8f9057ff8cc28b3ef75ea6c90a", kill_on_drop: false }`
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling command-macros-plugin v0.2.7 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_span, proc_macro_diagnostic, proc_macro_def_site)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_span, proc_macro_diagnostic, proc_macro_def_site)]
[INFO] [stdout]   |                             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:52
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_span, proc_macro_diagnostic, proc_macro_def_site)]
[INFO] [stdout]   |                                                    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `command-macros-plugin` due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "07dcce56e8cc25a1c9b9f4f122727ea8398a5c8f9057ff8cc28b3ef75ea6c90a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07dcce56e8cc25a1c9b9f4f122727ea8398a5c8f9057ff8cc28b3ef75ea6c90a", kill_on_drop: false }`
[INFO] [stdout] 07dcce56e8cc25a1c9b9f4f122727ea8398a5c8f9057ff8cc28b3ef75ea6c90a