[INFO] fetching crate rapid 0.0.1...
[INFO] checking rapid-0.0.1 against beta for pr-78714
[INFO] extracting crate rapid 0.0.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rapid 0.0.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rapid 0.0.1
[INFO] finished tweaking crates.io crate rapid 0.0.1
[INFO] tweaked toml for crates.io crate rapid 0.0.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 9218e8454221c930db23b7138ae3e6ca95bad9049d8e553dc206dd0c4952d087
[INFO] running `Command { std: "docker" "start" "-a" "9218e8454221c930db23b7138ae3e6ca95bad9049d8e553dc206dd0c4952d087", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9218e8454221c930db23b7138ae3e6ca95bad9049d8e553dc206dd0c4952d087", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9218e8454221c930db23b7138ae3e6ca95bad9049d8e553dc206dd0c4952d087", kill_on_drop: false }`
[INFO] [stdout] 9218e8454221c930db23b7138ae3e6ca95bad9049d8e553dc206dd0c4952d087
[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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 919cf1d20bcf2ca47f7b6b137f04cc3fcf13ae75413c3b56e7bddfb1ab816209
[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" "919cf1d20bcf2ca47f7b6b137f04cc3fcf13ae75413c3b56e7bddfb1ab816209", kill_on_drop: false }`
[INFO] [stderr]    Compiling derive_builder v0.5.1
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking crossbeam v0.2.12
[INFO] [stderr]    Compiling derive_builder_core v0.2.0
[INFO] [stderr]    Compiling test-case-derive v0.1.5
[INFO] [stderr]     Checking slog-scope v4.3.0
[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/test-case-derive-0.1.5/src/lib.rs:182:1
[INFO] [stdout]     |
[INFO] [stdout] 182 | #![feature(proc_macro)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking docopt v0.8.3
[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 `test-case-derive`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "919cf1d20bcf2ca47f7b6b137f04cc3fcf13ae75413c3b56e7bddfb1ab816209", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "919cf1d20bcf2ca47f7b6b137f04cc3fcf13ae75413c3b56e7bddfb1ab816209", kill_on_drop: false }`
[INFO] [stdout] 919cf1d20bcf2ca47f7b6b137f04cc3fcf13ae75413c3b56e7bddfb1ab816209