[INFO] fetching crate async_ftp 4.0.4...
[INFO] checking async_ftp-4.0.4 against beta for pr-78714
[INFO] extracting crate async_ftp 4.0.4 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate async_ftp 4.0.4 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 async_ftp 4.0.4
[INFO] finished tweaking crates.io crate async_ftp 4.0.4
[INFO] tweaked toml for crates.io crate async_ftp 4.0.4 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate async_ftp 4.0.4 already has a lockfile, it will not be regenerated
[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] [stdout] 906a71acbe3a9e55968bf1b67f207db3c3b196100c4f8625f7699021f5ba69b4
[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" "906a71acbe3a9e55968bf1b67f207db3c3b196100c4f8625f7699021f5ba69b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "906a71acbe3a9e55968bf1b67f207db3c3b196100c4f8625f7699021f5ba69b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "906a71acbe3a9e55968bf1b67f207db3c3b196100c4f8625f7699021f5ba69b4", kill_on_drop: false }`
[INFO] [stdout] 906a71acbe3a9e55968bf1b67f207db3c3b196100c4f8625f7699021f5ba69b4
[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] 91b16bebaa5679f18215c06492d146be333982eafb385da035ac633e01784eae
[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" "91b16bebaa5679f18215c06492d146be333982eafb385da035ac633e01784eae", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core v0.3.7
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking async_ftp v4.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.71s
[INFO] running `Command { std: "docker" "inspect" "91b16bebaa5679f18215c06492d146be333982eafb385da035ac633e01784eae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91b16bebaa5679f18215c06492d146be333982eafb385da035ac633e01784eae", kill_on_drop: false }`
[INFO] [stdout] 91b16bebaa5679f18215c06492d146be333982eafb385da035ac633e01784eae