[INFO] fetching crate single_executor 0.4.1...
[INFO] checking single_executor-0.4.1 against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] extracting crate single_executor 0.4.1 into /workspace/builds/worker-86/source
[INFO] validating manifest of crates.io crate single_executor 0.4.1 on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate single_executor 0.4.1
[INFO] finished tweaking crates.io crate single_executor 0.4.1
[INFO] tweaked toml for crates.io crate single_executor 0.4.1 written to /workspace/builds/worker-86/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atomic_swapping v0.1.0
[INFO] [stderr]   Downloaded simple_futures v0.1.2
[INFO] [stderr]   Downloaded concurrency_traits v0.7.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 49cb54d070b627c39075b76bc1d7ef225de86da8fbc65684c9ae5657b2073887
[INFO] running `Command { std: "docker" "start" "-a" "49cb54d070b627c39075b76bc1d7ef225de86da8fbc65684c9ae5657b2073887", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49cb54d070b627c39075b76bc1d7ef225de86da8fbc65684c9ae5657b2073887", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49cb54d070b627c39075b76bc1d7ef225de86da8fbc65684c9ae5657b2073887", kill_on_drop: false }`
[INFO] [stdout] 49cb54d070b627c39075b76bc1d7ef225de86da8fbc65684c9ae5657b2073887
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a08f70ba1bf39d66a4677c5ea0d639583aba7c65647a528a6fa10a982a3e379
[INFO] running `Command { std: "docker" "start" "-a" "9a08f70ba1bf39d66a4677c5ea0d639583aba7c65647a528a6fa10a982a3e379", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]     Checking atomic_swapping v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]     Checking simple_futures v0.1.2
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking concurrency_traits v0.7.2
[INFO] [stderr]     Checking single_executor v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.36s
[INFO] running `Command { std: "docker" "inspect" "9a08f70ba1bf39d66a4677c5ea0d639583aba7c65647a528a6fa10a982a3e379", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a08f70ba1bf39d66a4677c5ea0d639583aba7c65647a528a6fa10a982a3e379", kill_on_drop: false }`
[INFO] [stdout] 9a08f70ba1bf39d66a4677c5ea0d639583aba7c65647a528a6fa10a982a3e379