[INFO] fetching crate async-rdwr 0.0.0...
[INFO] testing async-rdwr-0.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate async-rdwr 0.0.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate async-rdwr 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-rdwr 0.0.0
[INFO] finished tweaking crates.io crate async-rdwr 0.0.0
[INFO] tweaked toml for crates.io crate async-rdwr 0.0.0 written to /workspace/builds/worker-6/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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] c7bde90b80f0f24e197d693f89497bcf6f1fb3780ca6a201e8c72f8d2c511ad5
[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" "c7bde90b80f0f24e197d693f89497bcf6f1fb3780ca6a201e8c72f8d2c511ad5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7bde90b80f0f24e197d693f89497bcf6f1fb3780ca6a201e8c72f8d2c511ad5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7bde90b80f0f24e197d693f89497bcf6f1fb3780ca6a201e8c72f8d2c511ad5", kill_on_drop: false }`
[INFO] [stdout] c7bde90b80f0f24e197d693f89497bcf6f1fb3780ca6a201e8c72f8d2c511ad5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 1a80df163ad562701ecec0811e093ec952c903c723ab0449b0e7ec8fd042c81a
[INFO] running `Command { std: "docker" "start" "-a" "1a80df163ad562701ecec0811e093ec952c903c723ab0449b0e7ec8fd042c81a", kill_on_drop: false }`
[INFO] [stderr]    Compiling async-rdwr v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "1a80df163ad562701ecec0811e093ec952c903c723ab0449b0e7ec8fd042c81a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a80df163ad562701ecec0811e093ec952c903c723ab0449b0e7ec8fd042c81a", kill_on_drop: false }`
[INFO] [stdout] 1a80df163ad562701ecec0811e093ec952c903c723ab0449b0e7ec8fd042c81a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 8b1c8d363d27a4a2ca5ee9f58ead3eae943711b35df367e2e3ebe14590bde3aa
[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" "8b1c8d363d27a4a2ca5ee9f58ead3eae943711b35df367e2e3ebe14590bde3aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling async-rdwr v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "8b1c8d363d27a4a2ca5ee9f58ead3eae943711b35df367e2e3ebe14590bde3aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b1c8d363d27a4a2ca5ee9f58ead3eae943711b35df367e2e3ebe14590bde3aa", kill_on_drop: false }`
[INFO] [stdout] 8b1c8d363d27a4a2ca5ee9f58ead3eae943711b35df367e2e3ebe14590bde3aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 0c959fadfd1f30081d91485e1cef8a292effb4ff18039456cfc0a1b909eccb29
[INFO] running `Command { std: "docker" "start" "-a" "0c959fadfd1f30081d91485e1cef8a292effb4ff18039456cfc0a1b909eccb29", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/async_rdwr-d838a8b96b63d49f)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests async-rdwr
[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" "0c959fadfd1f30081d91485e1cef8a292effb4ff18039456cfc0a1b909eccb29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c959fadfd1f30081d91485e1cef8a292effb4ff18039456cfc0a1b909eccb29", kill_on_drop: false }`
[INFO] [stdout] 0c959fadfd1f30081d91485e1cef8a292effb4ff18039456cfc0a1b909eccb29