[INFO] fetching crate tokio-tower 0.5.1...
[INFO] checking tokio-tower-0.5.1 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] extracting crate tokio-tower 0.5.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate tokio-tower 0.5.1 on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tokio-tower 0.5.1
[INFO] finished tweaking crates.io crate tokio-tower 0.5.1
[INFO] tweaked toml for crates.io crate tokio-tower 0.5.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "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] 97c7b85b19146f964915efa41ca6dc3e8ec66892e705c6db256cb381f647b441
[INFO] running `Command { std: "docker" "start" "-a" "97c7b85b19146f964915efa41ca6dc3e8ec66892e705c6db256cb381f647b441", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97c7b85b19146f964915efa41ca6dc3e8ec66892e705c6db256cb381f647b441", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97c7b85b19146f964915efa41ca6dc3e8ec66892e705c6db256cb381f647b441", kill_on_drop: false }`
[INFO] [stdout] 97c7b85b19146f964915efa41ca6dc3e8ec66892e705c6db256cb381f647b441
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 625b483e0e9260ccba893dfc6a732b8281d16f402290b7f64c6a3f8520dc01c9
[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" "625b483e0e9260ccba893dfc6a732b8281d16f402290b7f64c6a3f8520dc01c9", kill_on_drop: false }`
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]     Checking lock_api v0.4.3
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.3
[INFO] [stderr]     Checking crossbeam-queue v0.3.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking crossbeam v0.8.0
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling futures-macro v0.3.14
[INFO] [stderr]    Compiling async-stream-impl v0.3.1
[INFO] [stderr]     Checking async-stream v0.3.1
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]     Checking pin-project v1.0.7
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking tokio-stream v0.1.5
[INFO] [stderr]     Checking tower v0.4.6
[INFO] [stderr]     Checking async-bincode v0.6.1
[INFO] [stderr]     Checking tokio-tower v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tokio-test v0.4.1
[INFO] [stderr]     Checking tower-test v0.4.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.94s
[INFO] running `Command { std: "docker" "inspect" "625b483e0e9260ccba893dfc6a732b8281d16f402290b7f64c6a3f8520dc01c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "625b483e0e9260ccba893dfc6a732b8281d16f402290b7f64c6a3f8520dc01c9", kill_on_drop: false }`
[INFO] [stdout] 625b483e0e9260ccba893dfc6a732b8281d16f402290b7f64c6a3f8520dc01c9