[INFO] fetching crate async-channels 0.0.0...
[INFO] testing async-channels-0.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate async-channels 0.0.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate async-channels 0.0.0 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-channels 0.0.0
[INFO] finished tweaking crates.io crate async-channels 0.0.0
[INFO] tweaked toml for crates.io crate async-channels 0.0.0 written to /workspace/builds/worker-11/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] e6d0e75e6da1f1915691858e915e0d7832c30d1ec4e2d1246d2de499f159c5de
[INFO] running `Command { std: "docker" "start" "-a" "e6d0e75e6da1f1915691858e915e0d7832c30d1ec4e2d1246d2de499f159c5de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6d0e75e6da1f1915691858e915e0d7832c30d1ec4e2d1246d2de499f159c5de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6d0e75e6da1f1915691858e915e0d7832c30d1ec4e2d1246d2de499f159c5de", kill_on_drop: false }`
[INFO] [stdout] e6d0e75e6da1f1915691858e915e0d7832c30d1ec4e2d1246d2de499f159c5de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f18ded8ef9b88e6944c4a23cfb2161f69ec46d475e26aa6e7a025c66505376ef
[INFO] running `Command { std: "docker" "start" "-a" "f18ded8ef9b88e6944c4a23cfb2161f69ec46d475e26aa6e7a025c66505376ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling async-channels v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "f18ded8ef9b88e6944c4a23cfb2161f69ec46d475e26aa6e7a025c66505376ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f18ded8ef9b88e6944c4a23cfb2161f69ec46d475e26aa6e7a025c66505376ef", kill_on_drop: false }`
[INFO] [stdout] f18ded8ef9b88e6944c4a23cfb2161f69ec46d475e26aa6e7a025c66505376ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5dca17ecf4aa63d68452411877660e68e6ac7cc4386591ef7b129fa988fd116
[INFO] running `Command { std: "docker" "start" "-a" "f5dca17ecf4aa63d68452411877660e68e6ac7cc4386591ef7b129fa988fd116", kill_on_drop: false }`
[INFO] [stderr]    Compiling async-channels v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "f5dca17ecf4aa63d68452411877660e68e6ac7cc4386591ef7b129fa988fd116", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5dca17ecf4aa63d68452411877660e68e6ac7cc4386591ef7b129fa988fd116", kill_on_drop: false }`
[INFO] [stdout] f5dca17ecf4aa63d68452411877660e68e6ac7cc4386591ef7b129fa988fd116
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 50a9fd1809c957521d5c2c01c59b545d88c9e90583005e25e0032d0f5c418af4
[INFO] running `Command { std: "docker" "start" "-a" "50a9fd1809c957521d5c2c01c59b545d88c9e90583005e25e0032d0f5c418af4", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/async_channels-91dd384c4b33fc1a)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests async-channels
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "50a9fd1809c957521d5c2c01c59b545d88c9e90583005e25e0032d0f5c418af4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50a9fd1809c957521d5c2c01c59b545d88c9e90583005e25e0032d0f5c418af4", kill_on_drop: false }`
[INFO] [stdout] 50a9fd1809c957521d5c2c01c59b545d88c9e90583005e25e0032d0f5c418af4