[INFO] fetching crate salt 0.2.3...
[INFO] testing salt-0.2.3 against 1.55.0 for beta-1.56-1
[INFO] extracting crate salt 0.2.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate salt 0.2.3 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 salt 0.2.3
[INFO] finished tweaking crates.io crate salt 0.2.3
[INFO] tweaked toml for crates.io crate salt 0.2.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate salt 0.2.3 already has a lockfile, it will not be regenerated
[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] 1fbdd0a4fa85e9cbcfcccc8ef92bb1ed9142d9e726f9b019fa8434d7ca347959
[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" "1fbdd0a4fa85e9cbcfcccc8ef92bb1ed9142d9e726f9b019fa8434d7ca347959", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1fbdd0a4fa85e9cbcfcccc8ef92bb1ed9142d9e726f9b019fa8434d7ca347959", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fbdd0a4fa85e9cbcfcccc8ef92bb1ed9142d9e726f9b019fa8434d7ca347959", kill_on_drop: false }`
[INFO] [stdout] 1fbdd0a4fa85e9cbcfcccc8ef92bb1ed9142d9e726f9b019fa8434d7ca347959
[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] [stdout] 327432be6a0773373d3929f8e79ad870d879577ec6adb565d98dacadbc63b442
[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" "327432be6a0773373d3929f8e79ad870d879577ec6adb565d98dacadbc63b442", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_derive v1.0.129
[INFO] [stderr]    Compiling serde v1.0.129
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling structopt v0.3.22
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling salt v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.65s
[INFO] running `Command { std: "docker" "inspect" "327432be6a0773373d3929f8e79ad870d879577ec6adb565d98dacadbc63b442", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "327432be6a0773373d3929f8e79ad870d879577ec6adb565d98dacadbc63b442", kill_on_drop: false }`
[INFO] [stdout] 327432be6a0773373d3929f8e79ad870d879577ec6adb565d98dacadbc63b442
[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] ac08bebb92b9c42ad004ef3e07d7ee8e27122c0d89fe18b708ff8fd974907ae0
[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" "ac08bebb92b9c42ad004ef3e07d7ee8e27122c0d89fe18b708ff8fd974907ae0", kill_on_drop: false }`
[INFO] [stderr]    Compiling salt v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `Command { std: "docker" "inspect" "ac08bebb92b9c42ad004ef3e07d7ee8e27122c0d89fe18b708ff8fd974907ae0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac08bebb92b9c42ad004ef3e07d7ee8e27122c0d89fe18b708ff8fd974907ae0", kill_on_drop: false }`
[INFO] [stdout] ac08bebb92b9c42ad004ef3e07d7ee8e27122c0d89fe18b708ff8fd974907ae0
[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] 2d1640fcae46b748c827ced2cc3885e74abcea1dcbbd7a4ed01bd7a1015391bc
[INFO] running `Command { std: "docker" "start" "-a" "2d1640fcae46b748c827ced2cc3885e74abcea1dcbbd7a4ed01bd7a1015391bc", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/salt-d18f66b6391079c8)
[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" "2d1640fcae46b748c827ced2cc3885e74abcea1dcbbd7a4ed01bd7a1015391bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d1640fcae46b748c827ced2cc3885e74abcea1dcbbd7a4ed01bd7a1015391bc", kill_on_drop: false }`
[INFO] [stdout] 2d1640fcae46b748c827ced2cc3885e74abcea1dcbbd7a4ed01bd7a1015391bc