[INFO] fetching crate futures-io 0.3.17...
[INFO] testing futures-io-0.3.17 against 1.55.0 for beta-1.56-1
[INFO] extracting crate futures-io 0.3.17 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate futures-io 0.3.17 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 futures-io 0.3.17
[INFO] finished tweaking crates.io crate futures-io 0.3.17
[INFO] tweaked toml for crates.io crate futures-io 0.3.17 written to /workspace/builds/worker-20/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 8d5b61e5c94884fcc82245eee68596b2e2000619b8f944ef5def32b00d1c8853
[INFO] running `Command { std: "docker" "start" "-a" "8d5b61e5c94884fcc82245eee68596b2e2000619b8f944ef5def32b00d1c8853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d5b61e5c94884fcc82245eee68596b2e2000619b8f944ef5def32b00d1c8853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d5b61e5c94884fcc82245eee68596b2e2000619b8f944ef5def32b00d1c8853", kill_on_drop: false }`
[INFO] [stdout] 8d5b61e5c94884fcc82245eee68596b2e2000619b8f944ef5def32b00d1c8853
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 8e0c936818fff96896d5cf83a5b14fa518ae6f8687823726951bb93b55cedcb7
[INFO] running `Command { std: "docker" "start" "-a" "8e0c936818fff96896d5cf83a5b14fa518ae6f8687823726951bb93b55cedcb7", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-io v0.3.17 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "8e0c936818fff96896d5cf83a5b14fa518ae6f8687823726951bb93b55cedcb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e0c936818fff96896d5cf83a5b14fa518ae6f8687823726951bb93b55cedcb7", kill_on_drop: false }`
[INFO] [stdout] 8e0c936818fff96896d5cf83a5b14fa518ae6f8687823726951bb93b55cedcb7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 9cb079c3d3975fff567297a7b39f4cd4b6d653f410b5739768c76e499fb0671e
[INFO] running `Command { std: "docker" "start" "-a" "9cb079c3d3975fff567297a7b39f4cd4b6d653f410b5739768c76e499fb0671e", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-io v0.3.17 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "9cb079c3d3975fff567297a7b39f4cd4b6d653f410b5739768c76e499fb0671e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cb079c3d3975fff567297a7b39f4cd4b6d653f410b5739768c76e499fb0671e", kill_on_drop: false }`
[INFO] [stdout] 9cb079c3d3975fff567297a7b39f4cd4b6d653f410b5739768c76e499fb0671e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] ed0a2df21b589d4095629b524daa369f606d2a4a5a9520d9fae0e053971414a4
[INFO] running `Command { std: "docker" "start" "-a" "ed0a2df21b589d4095629b524daa369f606d2a4a5a9520d9fae0e053971414a4", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/futures_io-7fbe006555a2bc2f)
[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] [stderr]    Doc-tests futures-io
[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" "ed0a2df21b589d4095629b524daa369f606d2a4a5a9520d9fae0e053971414a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed0a2df21b589d4095629b524daa369f606d2a4a5a9520d9fae0e053971414a4", kill_on_drop: false }`
[INFO] [stdout] ed0a2df21b589d4095629b524daa369f606d2a4a5a9520d9fae0e053971414a4