[INFO] fetching crate futures-async-runtime-preview 0.2.3...
[INFO] testing futures-async-runtime-preview-0.2.3 against 1.55.0 for beta-1.56-1
[INFO] extracting crate futures-async-runtime-preview 0.2.3 into /workspace/builds/worker-66/source
[INFO] validating manifest of crates.io crate futures-async-runtime-preview 0.2.3 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-async-runtime-preview 0.2.3
[INFO] finished tweaking crates.io crate futures-async-runtime-preview 0.2.3
[INFO] tweaked toml for crates.io crate futures-async-runtime-preview 0.2.3 written to /workspace/builds/worker-66/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-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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] f22591427e72d386d090b2131ce0a311ad87c118672e961cd0c77ba5b3f8c215
[INFO] running `Command { std: "docker" "start" "-a" "f22591427e72d386d090b2131ce0a311ad87c118672e961cd0c77ba5b3f8c215", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f22591427e72d386d090b2131ce0a311ad87c118672e961cd0c77ba5b3f8c215", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f22591427e72d386d090b2131ce0a311ad87c118672e961cd0c77ba5b3f8c215", kill_on_drop: false }`
[INFO] [stdout] f22591427e72d386d090b2131ce0a311ad87c118672e961cd0c77ba5b3f8c215
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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] e86e82f12f06ff66ffdc2ec5b901f20d9dc4fe3dbd3532bfacdf98e378f0dc3a
[INFO] running `Command { std: "docker" "start" "-a" "e86e82f12f06ff66ffdc2ec5b901f20d9dc4fe3dbd3532bfacdf98e378f0dc3a", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling futures-core-preview v0.2.3
[INFO] [stderr]    Compiling futures-channel-preview v0.2.2
[INFO] [stderr]    Compiling futures-io-preview v0.2.2
[INFO] [stderr]    Compiling futures-sink-preview v0.2.2
[INFO] [stderr]    Compiling futures-util-preview v0.2.2
[INFO] [stderr]    Compiling futures-executor-preview v0.2.2
[INFO] [stderr]    Compiling futures-stable-preview v0.2.3
[INFO] [stderr]    Compiling futures-async-runtime-preview v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.66s
[INFO] running `Command { std: "docker" "inspect" "e86e82f12f06ff66ffdc2ec5b901f20d9dc4fe3dbd3532bfacdf98e378f0dc3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e86e82f12f06ff66ffdc2ec5b901f20d9dc4fe3dbd3532bfacdf98e378f0dc3a", kill_on_drop: false }`
[INFO] [stdout] e86e82f12f06ff66ffdc2ec5b901f20d9dc4fe3dbd3532bfacdf98e378f0dc3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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] bce2ea0d471d35fe231bbaa108dae0c5697e7fe64946320f7c68dfc01a41a292
[INFO] running `Command { std: "docker" "start" "-a" "bce2ea0d471d35fe231bbaa108dae0c5697e7fe64946320f7c68dfc01a41a292", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-async-runtime-preview v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "bce2ea0d471d35fe231bbaa108dae0c5697e7fe64946320f7c68dfc01a41a292", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bce2ea0d471d35fe231bbaa108dae0c5697e7fe64946320f7c68dfc01a41a292", kill_on_drop: false }`
[INFO] [stdout] bce2ea0d471d35fe231bbaa108dae0c5697e7fe64946320f7c68dfc01a41a292
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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] ade7d8ba5b3ecc0823f4467a31fcf89413e052f7b65fe1553083722708b73cf2
[INFO] running `Command { std: "docker" "start" "-a" "ade7d8ba5b3ecc0823f4467a31fcf89413e052f7b65fe1553083722708b73cf2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/futures_async_runtime-5dda689b4ecdb8fd)
[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_async_runtime
[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" "ade7d8ba5b3ecc0823f4467a31fcf89413e052f7b65fe1553083722708b73cf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ade7d8ba5b3ecc0823f4467a31fcf89413e052f7b65fe1553083722708b73cf2", kill_on_drop: false }`
[INFO] [stdout] ade7d8ba5b3ecc0823f4467a31fcf89413e052f7b65fe1553083722708b73cf2