[INFO] fetching crate argmap 1.1.1...
[INFO] testing argmap-1.1.1 against 1.60.0 for beta-1.61-1
[INFO] extracting crate argmap 1.1.1 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate argmap 1.1.1 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate argmap 1.1.1
[INFO] finished tweaking crates.io crate argmap 1.1.1
[INFO] tweaked toml for crates.io crate argmap 1.1.1 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate argmap 1.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] 59acbf7d539d0c85da49805d56342737a3078099ee1beb6942b07c9edeb2f872
[INFO] running `Command { std: "docker" "start" "-a" "59acbf7d539d0c85da49805d56342737a3078099ee1beb6942b07c9edeb2f872", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59acbf7d539d0c85da49805d56342737a3078099ee1beb6942b07c9edeb2f872", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59acbf7d539d0c85da49805d56342737a3078099ee1beb6942b07c9edeb2f872", kill_on_drop: false }`
[INFO] [stdout] 59acbf7d539d0c85da49805d56342737a3078099ee1beb6942b07c9edeb2f872
[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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] 264c519a2371109aaa93a2464fdf85c8cc5cec23c5fef851ea2644c8950476e7
[INFO] running `Command { std: "docker" "start" "-a" "264c519a2371109aaa93a2464fdf85c8cc5cec23c5fef851ea2644c8950476e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling argmap v1.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(extended_key_value_attributes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `extended_key_value_attributes` has been stable since 1.54.0 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 `argmap` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "264c519a2371109aaa93a2464fdf85c8cc5cec23c5fef851ea2644c8950476e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "264c519a2371109aaa93a2464fdf85c8cc5cec23c5fef851ea2644c8950476e7", kill_on_drop: false }`
[INFO] [stdout] 264c519a2371109aaa93a2464fdf85c8cc5cec23c5fef851ea2644c8950476e7