[INFO] fetching crate rustscan 2.0.0...
[INFO] checking rustscan-2.0.0 against beta for pr-78714
[INFO] extracting crate rustscan 2.0.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate rustscan 2.0.0 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 rustscan 2.0.0
[INFO] finished tweaking crates.io crate rustscan 2.0.0
[INFO] tweaked toml for crates.io crate rustscan 2.0.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate rustscan 2.0.0 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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/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] 3f77f4e4542f1895bd383cb6d961b8933ca64404b33cb28b3a2527a49d0dae8d
[INFO] running `Command { std: "docker" "start" "-a" "3f77f4e4542f1895bd383cb6d961b8933ca64404b33cb28b3a2527a49d0dae8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f77f4e4542f1895bd383cb6d961b8933ca64404b33cb28b3a2527a49d0dae8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f77f4e4542f1895bd383cb6d961b8933ca64404b33cb28b3a2527a49d0dae8d", kill_on_drop: false }`
[INFO] [stdout] 3f77f4e4542f1895bd383cb6d961b8933ca64404b33cb28b3a2527a49d0dae8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/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] 1b915dc456e306c68f429a72555552a7ab5da93d9bc0364c8219f4b2ad49a2d0
[INFO] running `Command { std: "docker" "start" "-a" "1b915dc456e306c68f429a72555552a7ab5da93d9bc0364c8219f4b2ad49a2d0", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core v0.3.7
[INFO] [stderr]     Checking futures-io v0.3.7
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]     Checking futures-sink v0.3.7
[INFO] [stderr]     Checking debug-helper v0.3.10
[INFO] [stderr]     Checking humantime v2.0.1
[INFO] [stderr]     Checking shell-words v1.0.0
[INFO] [stderr]     Checking colorful v0.2.1
[INFO] [stderr]     Checking gcd v2.0.1
[INFO] [stderr]     Checking futures-task v0.3.7
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]     Checking nb-connect v1.0.2
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking rlimit v0.5.2
[INFO] [stderr]     Checking subprocess v0.2.6
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking polling v2.0.2
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking dirs v3.0.1
[INFO] [stderr]     Checking resolv-conf v0.6.3
[INFO] [stderr]     Checking futures-channel v0.3.7
[INFO] [stderr]     Checking futures-lite v1.11.2
[INFO] [stderr]     Checking async-channel v1.5.1
[INFO] [stderr]    Compiling futures-macro v0.3.7
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling enum-as-inner v0.3.3
[INFO] [stderr]    Compiling async-trait v0.1.41
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking env_logger v0.8.1
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking text_placeholder v0.4.0
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]    Compiling ring v0.16.15
[INFO] [stderr]     Checking async-io v1.1.10
[INFO] [stderr]     Checking async-executor v1.3.0
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking async-global-executor v1.4.3
[INFO] [stderr]     Checking async-std v1.7.0
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking futures-util v0.3.7
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking cidr-utils v0.5.0
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking rustls v0.17.0
[INFO] [stderr]     Checking webpki-roots v0.19.0
[INFO] [stderr]     Checking futures-executor v0.3.7
[INFO] [stderr]     Checking futures v0.3.7
[INFO] [stderr]     Checking tokio-rustls v0.13.1
[INFO] [stderr]     Checking trust-dns-proto v0.19.5
[INFO] [stderr]     Checking trust-dns-rustls v0.19.5
[INFO] [stderr]     Checking trust-dns-resolver v0.19.5
[INFO] [stderr]     Checking rustscan v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 52.85s
[INFO] running `Command { std: "docker" "inspect" "1b915dc456e306c68f429a72555552a7ab5da93d9bc0364c8219f4b2ad49a2d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b915dc456e306c68f429a72555552a7ab5da93d9bc0364c8219f4b2ad49a2d0", kill_on_drop: false }`
[INFO] [stdout] 1b915dc456e306c68f429a72555552a7ab5da93d9bc0364c8219f4b2ad49a2d0