[INFO] fetching crate twiggy-opt 0.6.0...
[INFO] checking twiggy-opt-0.6.0 against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] extracting crate twiggy-opt 0.6.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate twiggy-opt 0.6.0 on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate twiggy-opt 0.6.0
[INFO] finished tweaking crates.io crate twiggy-opt 0.6.0
[INFO] tweaked toml for crates.io crate twiggy-opt 0.6.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 852bf142c2feeb077814cda86d71e316b732719d000244c9ec70f04f833c5bfc
[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" "852bf142c2feeb077814cda86d71e316b732719d000244c9ec70f04f833c5bfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "852bf142c2feeb077814cda86d71e316b732719d000244c9ec70f04f833c5bfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "852bf142c2feeb077814cda86d71e316b732719d000244c9ec70f04f833c5bfc", kill_on_drop: false }`
[INFO] [stdout] 852bf142c2feeb077814cda86d71e316b732719d000244c9ec70f04f833c5bfc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 235b1ff9bb6d175b498a78bca8a05db090226513264ba36e3327f75c57b09c18
[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" "235b1ff9bb6d175b498a78bca8a05db090226513264ba36e3327f75c57b09c18", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]     Checking ordermap v0.3.5
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]     Checking frozen v1.0.0
[INFO] [stderr]     Checking wasmparser v0.31.1
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling cpp_demangle v0.2.16
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]    Compiling twiggy-opt v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking twiggy-ir v0.6.0
[INFO] [stderr]     Checking twiggy-traits v0.6.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.97s
[INFO] running `Command { std: "docker" "inspect" "235b1ff9bb6d175b498a78bca8a05db090226513264ba36e3327f75c57b09c18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "235b1ff9bb6d175b498a78bca8a05db090226513264ba36e3327f75c57b09c18", kill_on_drop: false }`
[INFO] [stdout] 235b1ff9bb6d175b498a78bca8a05db090226513264ba36e3327f75c57b09c18