[INFO] fetching crate async_executors 0.4.2...
[INFO] checking async_executors-0.4.2 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] extracting crate async_executors 0.4.2 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate async_executors 0.4.2 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async_executors 0.4.2
[INFO] removed 10 missing examples
[INFO] finished tweaking crates.io crate async_executors 0.4.2
[INFO] tweaked toml for crates.io crate async_executors 0.4.2 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate async_executors 0.4.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "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-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c87bfe1266c00f73ecbb2a0378d7860a9a9d2f8e7de54b2e63b0fa30e4780c5
[INFO] running `Command { std: "docker" "start" "-a" "3c87bfe1266c00f73ecbb2a0378d7860a9a9d2f8e7de54b2e63b0fa30e4780c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c87bfe1266c00f73ecbb2a0378d7860a9a9d2f8e7de54b2e63b0fa30e4780c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c87bfe1266c00f73ecbb2a0378d7860a9a9d2f8e7de54b2e63b0fa30e4780c5", kill_on_drop: false }`
[INFO] [stdout] 3c87bfe1266c00f73ecbb2a0378d7860a9a9d2f8e7de54b2e63b0fa30e4780c5
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 719d0183f1fd905eed57a613fac27eb4f02d59b50d3aee9f97e83f68d94adf04
[INFO] running `Command { std: "docker" "start" "-a" "719d0183f1fd905eed57a613fac27eb4f02d59b50d3aee9f97e83f68d94adf04", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-io v0.3.15
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]    Compiling tokio v1.6.1
[INFO] [stderr]     Checking tracing-subscriber v0.2.18
[INFO] [stderr]     Checking futures-channel v0.3.15
[INFO] [stderr]    Compiling async_executors v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling trait-set v0.2.0
[INFO] [stderr]     Checking futures-util v0.3.15
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking futures-executor v0.3.15
[INFO] [stderr]     Checking futures v0.3.15
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.05s
[INFO] running `Command { std: "docker" "inspect" "719d0183f1fd905eed57a613fac27eb4f02d59b50d3aee9f97e83f68d94adf04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "719d0183f1fd905eed57a613fac27eb4f02d59b50d3aee9f97e83f68d94adf04", kill_on_drop: false }`
[INFO] [stdout] 719d0183f1fd905eed57a613fac27eb4f02d59b50d3aee9f97e83f68d94adf04