[INFO] fetching crate async-tcp 0.2.0...
[INFO] checking async-tcp-0.2.0 against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] extracting crate async-tcp 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate async-tcp 0.2.0 on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "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-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "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" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7368ac02c16564a28039ac8cb3a3fb942f776c52c4b536253fd24e1f5617e2e0
[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" "7368ac02c16564a28039ac8cb3a3fb942f776c52c4b536253fd24e1f5617e2e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7368ac02c16564a28039ac8cb3a3fb942f776c52c4b536253fd24e1f5617e2e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7368ac02c16564a28039ac8cb3a3fb942f776c52c4b536253fd24e1f5617e2e0", kill_on_drop: false }`
[INFO] [stdout] 7368ac02c16564a28039ac8cb3a3fb942f776c52c4b536253fd24e1f5617e2e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b39c0a865638a74ef6e24e6df8965f67b5aa603cfd7bf04d07f2c0e462a656e
[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" "0b39c0a865638a74ef6e24e6df8965f67b5aa603cfd7bf04d07f2c0e462a656e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking vec-arena v0.5.2
[INFO] [stderr]     Checking futures-micro v0.3.1
[INFO] [stderr]     Checking async-lock v2.3.0
[INFO] [stderr]     Checking socket2 v0.3.16
[INFO] [stderr]     Checking nb-connect v1.0.2
[INFO] [stderr]     Checking polling v1.1.0
[INFO] [stderr]     Checking polling v0.1.9
[INFO] [stderr]     Checking signal-hook v0.1.16
[INFO] [stderr]     Checking ufut v0.3.1
[INFO] [stderr]     Checking async-peek v0.3.2
[INFO] [stderr]     Checking futures-lite v1.11.2
[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 async-executor v0.2.1
[INFO] [stderr]     Checking blocking v0.6.1
[INFO] [stderr]     Checking async-tcp v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking async-fs v1.5.0
[INFO] [stderr]     Checking async-net 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 6.35s
[INFO] running `Command { std: "docker" "inspect" "0b39c0a865638a74ef6e24e6df8965f67b5aa603cfd7bf04d07f2c0e462a656e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b39c0a865638a74ef6e24e6df8965f67b5aa603cfd7bf04d07f2c0e462a656e", kill_on_drop: false }`
[INFO] [stdout] 0b39c0a865638a74ef6e24e6df8965f67b5aa603cfd7bf04d07f2c0e462a656e