[INFO] fetching crate ferrous-systems 0.1.0...
[INFO] testing ferrous-systems-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate ferrous-systems 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate ferrous-systems 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 ferrous-systems 0.1.0
[INFO] finished tweaking crates.io crate ferrous-systems 0.1.0
[INFO] tweaked toml for crates.io crate ferrous-systems 0.1.0 written to /workspace/builds/worker-9/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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 1acb65b233913063cf38c21913d87173f0d92985c0cde849385b7c7ca16f6a51
[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" "1acb65b233913063cf38c21913d87173f0d92985c0cde849385b7c7ca16f6a51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1acb65b233913063cf38c21913d87173f0d92985c0cde849385b7c7ca16f6a51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1acb65b233913063cf38c21913d87173f0d92985c0cde849385b7c7ca16f6a51", kill_on_drop: false }`
[INFO] [stdout] 1acb65b233913063cf38c21913d87173f0d92985c0cde849385b7c7ca16f6a51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 0b27bb014b916c8a710b1eba5bcbe0c0ebe6ad1f15f92e58b09fca0788220874
[INFO] running `Command { std: "docker" "start" "-a" "0b27bb014b916c8a710b1eba5bcbe0c0ebe6ad1f15f92e58b09fca0788220874", kill_on_drop: false }`
[INFO] [stderr]    Compiling ferrous-systems v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "0b27bb014b916c8a710b1eba5bcbe0c0ebe6ad1f15f92e58b09fca0788220874", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b27bb014b916c8a710b1eba5bcbe0c0ebe6ad1f15f92e58b09fca0788220874", kill_on_drop: false }`
[INFO] [stdout] 0b27bb014b916c8a710b1eba5bcbe0c0ebe6ad1f15f92e58b09fca0788220874
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 78af064bb86ab07a0a6c0088e53ac5b3914fdf461b4bc2a2bc5177e4b6a5590b
[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" "78af064bb86ab07a0a6c0088e53ac5b3914fdf461b4bc2a2bc5177e4b6a5590b", kill_on_drop: false }`
[INFO] [stderr]    Compiling ferrous-systems v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "78af064bb86ab07a0a6c0088e53ac5b3914fdf461b4bc2a2bc5177e4b6a5590b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78af064bb86ab07a0a6c0088e53ac5b3914fdf461b4bc2a2bc5177e4b6a5590b", kill_on_drop: false }`
[INFO] [stdout] 78af064bb86ab07a0a6c0088e53ac5b3914fdf461b4bc2a2bc5177e4b6a5590b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] a86ae8a87c118d85c78b9a901691a06470fcde69ec7125b4abf08d67a4764dad
[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" "a86ae8a87c118d85c78b9a901691a06470fcde69ec7125b4abf08d67a4764dad", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ferrous_systems-60a8619ee0e4291a)
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests ferrous-systems
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 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" "a86ae8a87c118d85c78b9a901691a06470fcde69ec7125b4abf08d67a4764dad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a86ae8a87c118d85c78b9a901691a06470fcde69ec7125b4abf08d67a4764dad", kill_on_drop: false }`
[INFO] [stdout] a86ae8a87c118d85c78b9a901691a06470fcde69ec7125b4abf08d67a4764dad