[INFO] fetching crate futures-polling 0.1.1...
[INFO] testing futures-polling-0.1.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate futures-polling 0.1.1 into /workspace/builds/worker-51/source
[INFO] validating manifest of crates.io crate futures-polling 0.1.1 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-polling 0.1.1
[INFO] finished tweaking crates.io crate futures-polling 0.1.1
[INFO] tweaked toml for crates.io crate futures-polling 0.1.1 written to /workspace/builds/worker-51/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-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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] 8cad00ec1df689abbeff2b1de5c55ab0994f848ee4978fb0302a32bcc9572138
[INFO] running `Command { std: "docker" "start" "-a" "8cad00ec1df689abbeff2b1de5c55ab0994f848ee4978fb0302a32bcc9572138", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8cad00ec1df689abbeff2b1de5c55ab0994f848ee4978fb0302a32bcc9572138", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cad00ec1df689abbeff2b1de5c55ab0994f848ee4978fb0302a32bcc9572138", kill_on_drop: false }`
[INFO] [stdout] 8cad00ec1df689abbeff2b1de5c55ab0994f848ee4978fb0302a32bcc9572138
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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] 10a566f81a72280701d43f2bedaaf736eb286bde9cdd561c081a2aa4e72d07fa
[INFO] running `Command { std: "docker" "start" "-a" "10a566f81a72280701d43f2bedaaf736eb286bde9cdd561c081a2aa4e72d07fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-polling v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "10a566f81a72280701d43f2bedaaf736eb286bde9cdd561c081a2aa4e72d07fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10a566f81a72280701d43f2bedaaf736eb286bde9cdd561c081a2aa4e72d07fa", kill_on_drop: false }`
[INFO] [stdout] 10a566f81a72280701d43f2bedaaf736eb286bde9cdd561c081a2aa4e72d07fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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] 69b4b3e3b43851d4f89e099f32ac58622e81a2a57b6ff52ffbaa7ca1e0bdd6b3
[INFO] running `Command { std: "docker" "start" "-a" "69b4b3e3b43851d4f89e099f32ac58622e81a2a57b6ff52ffbaa7ca1e0bdd6b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling futures-polling v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.06s
[INFO] running `Command { std: "docker" "inspect" "69b4b3e3b43851d4f89e099f32ac58622e81a2a57b6ff52ffbaa7ca1e0bdd6b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69b4b3e3b43851d4f89e099f32ac58622e81a2a57b6ff52ffbaa7ca1e0bdd6b3", kill_on_drop: false }`
[INFO] [stdout] 69b4b3e3b43851d4f89e099f32ac58622e81a2a57b6ff52ffbaa7ca1e0bdd6b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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] 0873895a7f37b22c919922dcc301c8a76116fc286419e17161175f137ee96899
[INFO] running `Command { std: "docker" "start" "-a" "0873895a7f37b22c919922dcc301c8a76116fc286419e17161175f137ee96899", 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_polling-a7bfcce06940336f)
[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-polling
[INFO] [stdout] 
[INFO] [stdout] running 35 tests
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name futures_polling --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern futures_lite=/opt/rustwide/target/debug/deps/libfutures_lite-6d9a43e1c190e3fd.rlib --extern futures_polling=/opt/rustwide/target/debug/deps/libfutures_polling-dd3c24e2a4487b12.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "0873895a7f37b22c919922dcc301c8a76116fc286419e17161175f137ee96899", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0873895a7f37b22c919922dcc301c8a76116fc286419e17161175f137ee96899", kill_on_drop: false }`
[INFO] [stdout] 0873895a7f37b22c919922dcc301c8a76116fc286419e17161175f137ee96899