[INFO] fetching crate prototty 0.29.0...
[INFO] checking prototty-0.29.0 against beta for pr-78714
[INFO] extracting crate prototty 0.29.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate prototty 0.29.0 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 prototty 0.29.0
[INFO] finished tweaking crates.io crate prototty 0.29.0
[INFO] tweaked toml for crates.io crate prototty 0.29.0 written to /workspace/builds/worker-4/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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 269eeb041739cf36c9b94ad55cc6301c4489f359bbef282dc4e81c7c10209e43
[INFO] running `Command { std: "docker" "start" "-a" "269eeb041739cf36c9b94ad55cc6301c4489f359bbef282dc4e81c7c10209e43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "269eeb041739cf36c9b94ad55cc6301c4489f359bbef282dc4e81c7c10209e43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "269eeb041739cf36c9b94ad55cc6301c4489f359bbef282dc4e81c7c10209e43", kill_on_drop: false }`
[INFO] [stdout] 269eeb041739cf36c9b94ad55cc6301c4489f359bbef282dc4e81c7c10209e43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 728ae0b8a7e8dee0dce27252a0e24029c70d31934179f573509fa4cdfd38f3d6
[INFO] running `Command { std: "docker" "start" "-a" "728ae0b8a7e8dee0dce27252a0e24029c70d31934179f573509fa4cdfd38f3d6", kill_on_drop: false }`
[INFO] [stderr]     Checking prototty_text v0.29.0
[INFO] [stderr]     Checking prototty_decorator v0.29.0
[INFO] [stderr]     Checking prototty_event_routine v0.29.0
[INFO] [stderr]     Checking prototty_menu v0.29.0
[INFO] [stderr]     Checking prototty v0.29.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "728ae0b8a7e8dee0dce27252a0e24029c70d31934179f573509fa4cdfd38f3d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "728ae0b8a7e8dee0dce27252a0e24029c70d31934179f573509fa4cdfd38f3d6", kill_on_drop: false }`
[INFO] [stdout] 728ae0b8a7e8dee0dce27252a0e24029c70d31934179f573509fa4cdfd38f3d6