[INFO] fetching crate arc-rs 0.0.1...
[INFO] checking arc-rs-0.0.1 against beta for pr-78714
[INFO] extracting crate arc-rs 0.0.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate arc-rs 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 arc-rs 0.0.1
[INFO] finished tweaking crates.io crate arc-rs 0.0.1
[INFO] tweaked toml for crates.io crate arc-rs 0.0.1 written to /workspace/builds/worker-5/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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] baf232c69c13698dc0fce976ac2dca5df66e39155d51f6c12a2e700c46c7bd11
[INFO] running `Command { std: "docker" "start" "-a" "baf232c69c13698dc0fce976ac2dca5df66e39155d51f6c12a2e700c46c7bd11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "baf232c69c13698dc0fce976ac2dca5df66e39155d51f6c12a2e700c46c7bd11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baf232c69c13698dc0fce976ac2dca5df66e39155d51f6c12a2e700c46c7bd11", kill_on_drop: false }`
[INFO] [stdout] baf232c69c13698dc0fce976ac2dca5df66e39155d51f6c12a2e700c46c7bd11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 7c4e120d09b712595b7abbe8043814dc30a95be7b9edbe4bc627357ab837e66e
[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" "7c4e120d09b712595b7abbe8043814dc30a95be7b9edbe4bc627357ab837e66e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking ucd-trie v0.1.3
[INFO] [stderr]     Checking arc_number v0.0.1
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]     Checking arc_ast v0.0.1
[INFO] [stderr]     Checking arc_parser v0.1.0
[INFO] [stderr]     Checking arc-rs v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `arc-rs`
[INFO] [stdout] error[E0463]: can't find crate for `arc`
[INFO] [stdout]  --> tests/to_html.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate arc;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7c4e120d09b712595b7abbe8043814dc30a95be7b9edbe4bc627357ab837e66e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c4e120d09b712595b7abbe8043814dc30a95be7b9edbe4bc627357ab837e66e", kill_on_drop: false }`
[INFO] [stdout] 7c4e120d09b712595b7abbe8043814dc30a95be7b9edbe4bc627357ab837e66e