[INFO] fetching crate async-signals 0.3.1...
[INFO] checking async-signals-0.3.1 against 1.55.0 for beta-1.56-3
[INFO] extracting crate async-signals 0.3.1 into /workspace/builds/worker-61/source
[INFO] validating manifest of crates.io crate async-signals 0.3.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-signals 0.3.1
[INFO] finished tweaking crates.io crate async-signals 0.3.1
[INFO] tweaked toml for crates.io crate async-signals 0.3.1 written to /workspace/builds/worker-61/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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" "+1.55.0" "fetch" "--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-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8925d46e54bcfc2daecb88d7d0c598e3be580d7d5ebe7340bed4488a9c7226ab
[INFO] running `Command { std: "docker" "start" "-a" "8925d46e54bcfc2daecb88d7d0c598e3be580d7d5ebe7340bed4488a9c7226ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8925d46e54bcfc2daecb88d7d0c598e3be580d7d5ebe7340bed4488a9c7226ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8925d46e54bcfc2daecb88d7d0c598e3be580d7d5ebe7340bed4488a9c7226ab", kill_on_drop: false }`
[INFO] [stdout] 8925d46e54bcfc2daecb88d7d0c598e3be580d7d5ebe7340bed4488a9c7226ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5469098f524f2b49a62d7835ce665b2fc1ae10aef118841950c1adb93ae9bc30
[INFO] running `Command { std: "docker" "start" "-a" "5469098f524f2b49a62d7835ce665b2fc1ae10aef118841950c1adb93ae9bc30", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]    Compiling ctor v0.1.21
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]     Checking value-bag v1.0.0-alpha.7
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking polling v2.1.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking async-io v1.6.0
[INFO] [stderr]     Checking async-global-executor v2.0.2
[INFO] [stderr]     Checking async-std v1.10.0
[INFO] [stderr]     Checking async-signals v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.49s
[INFO] running `Command { std: "docker" "inspect" "5469098f524f2b49a62d7835ce665b2fc1ae10aef118841950c1adb93ae9bc30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5469098f524f2b49a62d7835ce665b2fc1ae10aef118841950c1adb93ae9bc30", kill_on_drop: false }`
[INFO] [stdout] 5469098f524f2b49a62d7835ce665b2fc1ae10aef118841950c1adb93ae9bc30
