[INFO] fetching crate async-tcp 0.2.0...
[INFO] checking async-tcp-0.2.0 against try#575650af7d7ca88602df28e39d27bf3e456c306e for pr-80579
[INFO] extracting crate async-tcp 0.2.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate async-tcp 0.2.0 on toolchain 575650af7d7ca88602df28e39d27bf3e456c306e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-tcp 0.2.0
[INFO] finished tweaking crates.io crate async-tcp 0.2.0
[INFO] tweaked toml for crates.io crate async-tcp 0.2.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async-process v0.1.3
[INFO] [stderr]   Downloaded async-io v0.2.7
[INFO] [stderr]   Downloaded futures-micro v0.3.1
[INFO] [stderr]   Downloaded smol v0.4.3
[INFO] [stderr]   Downloaded async-executor v0.2.1
[INFO] [stderr]   Downloaded ufut v0.3.1
[INFO] [stderr]   Downloaded blocking v0.6.1
[INFO] [stderr]   Downloaded async-peek v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a1dc1a5ef71d7ec19672b53a0c2f3b01d9bdd650fab9f3c60b52e6f0deb9f33
[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" "6a1dc1a5ef71d7ec19672b53a0c2f3b01d9bdd650fab9f3c60b52e6f0deb9f33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a1dc1a5ef71d7ec19672b53a0c2f3b01d9bdd650fab9f3c60b52e6f0deb9f33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a1dc1a5ef71d7ec19672b53a0c2f3b01d9bdd650fab9f3c60b52e6f0deb9f33", kill_on_drop: false }`
[INFO] [stdout] 6a1dc1a5ef71d7ec19672b53a0c2f3b01d9bdd650fab9f3c60b52e6f0deb9f33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30f656532edbfdb3759d07f1caa0e5f48da8042426cb413d334b1997b8d6b94d
[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" "30f656532edbfdb3759d07f1caa0e5f48da8042426cb413d334b1997b8d6b94d", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking fastrand v1.4.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking vec-arena v1.0.0
[INFO] [stderr]     Checking futures-micro v0.3.1
[INFO] [stderr]     Checking vec-arena v0.5.2
[INFO] [stderr]     Checking async-task v3.0.0
[INFO] [stderr]     Checking polling v1.1.0
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking polling v0.1.9
[INFO] [stderr]     Checking nb-connect v1.0.2
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking ufut v0.3.1
[INFO] [stderr]     Checking async-lock v2.3.0
[INFO] [stderr]     Checking async-peek v0.3.2
[INFO] [stderr]     Checking async-channel v1.5.1
[INFO] [stderr]     Checking futures-lite v1.11.3
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-io v1.1.6
[INFO] [stderr]     Checking async-io v0.2.7
[INFO] [stderr]     Checking blocking v0.6.1
[INFO] [stderr]     Checking async-executor v0.2.1
[INFO] [stderr]     Checking async-tcp v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking async-net v1.5.0
[INFO] [stderr]     Checking async-fs v1.5.0
[INFO] [stderr]     Checking async-process v0.1.3
[INFO] [stderr]     Checking smol v0.4.3
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.13s
[INFO] running `Command { std: "docker" "inspect" "30f656532edbfdb3759d07f1caa0e5f48da8042426cb413d334b1997b8d6b94d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30f656532edbfdb3759d07f1caa0e5f48da8042426cb413d334b1997b8d6b94d", kill_on_drop: false }`
[INFO] [stdout] 30f656532edbfdb3759d07f1caa0e5f48da8042426cb413d334b1997b8d6b94d