[INFO] fetching crate accel-stepper 0.1.0...
[INFO] testing accel-stepper-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate accel-stepper 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate accel-stepper 0.1.0 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 accel-stepper 0.1.0
[INFO] finished tweaking crates.io crate accel-stepper 0.1.0
[INFO] tweaked toml for crates.io crate accel-stepper 0.1.0 written to /workspace/builds/worker-4/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 4e0198a44ec43c9644542e41f5c0a3e480b3377d9be7be5320f7a4bcbfd6b518
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4e0198a44ec43c9644542e41f5c0a3e480b3377d9be7be5320f7a4bcbfd6b518", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e0198a44ec43c9644542e41f5c0a3e480b3377d9be7be5320f7a4bcbfd6b518", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e0198a44ec43c9644542e41f5c0a3e480b3377d9be7be5320f7a4bcbfd6b518", kill_on_drop: false }`
[INFO] [stdout] 4e0198a44ec43c9644542e41f5c0a3e480b3377d9be7be5320f7a4bcbfd6b518
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 308315d0fd92342b77b0c96fd6e9b74ba0bb3f069ca58f9290b59a53c596510e
[INFO] running `Command { std: "docker" "start" "-a" "308315d0fd92342b77b0c96fd6e9b74ba0bb3f069ca58f9290b59a53c596510e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.1.4
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling accel-stepper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.27s
[INFO] running `Command { std: "docker" "inspect" "308315d0fd92342b77b0c96fd6e9b74ba0bb3f069ca58f9290b59a53c596510e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "308315d0fd92342b77b0c96fd6e9b74ba0bb3f069ca58f9290b59a53c596510e", kill_on_drop: false }`
[INFO] [stdout] 308315d0fd92342b77b0c96fd6e9b74ba0bb3f069ca58f9290b59a53c596510e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ebd8c866d30c7b5b79f18ad49bfb7680d6d1bbd2225c09bfc55fff3fd29986bb
[INFO] running `Command { std: "docker" "start" "-a" "ebd8c866d30c7b5b79f18ad49bfb7680d6d1bbd2225c09bfc55fff3fd29986bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling accel-stepper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "ebd8c866d30c7b5b79f18ad49bfb7680d6d1bbd2225c09bfc55fff3fd29986bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebd8c866d30c7b5b79f18ad49bfb7680d6d1bbd2225c09bfc55fff3fd29986bb", kill_on_drop: false }`
[INFO] [stdout] ebd8c866d30c7b5b79f18ad49bfb7680d6d1bbd2225c09bfc55fff3fd29986bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 67de0667a18d956467b6794584716908973a6512d13cb496102c0a69273abd7c
[INFO] running `Command { std: "docker" "start" "-a" "67de0667a18d956467b6794584716908973a6512d13cb496102c0a69273abd7c", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/accel_stepper-97d8c995726bed91)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test driver::tests::compute_new_speeds_when_already_at_target ... ok
[INFO] [stdout] test driver::tests::dont_step_when_already_at_target ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests accel-stepper
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 9) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.41s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "67de0667a18d956467b6794584716908973a6512d13cb496102c0a69273abd7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67de0667a18d956467b6794584716908973a6512d13cb496102c0a69273abd7c", kill_on_drop: false }`
[INFO] [stdout] 67de0667a18d956467b6794584716908973a6512d13cb496102c0a69273abd7c