[INFO] fetching crate decent-serde-json-derive-alternative 0.4.0...
[INFO] checking decent-serde-json-derive-alternative-0.4.0 against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] extracting crate decent-serde-json-derive-alternative 0.4.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate decent-serde-json-derive-alternative 0.4.0 on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate decent-serde-json-derive-alternative 0.4.0
[INFO] finished tweaking crates.io crate decent-serde-json-derive-alternative 0.4.0
[INFO] tweaked toml for crates.io crate decent-serde-json-derive-alternative 0.4.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--no-deps" "--format-version=1", 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] 9144c4bbb57c57bddab9dcfd1020221f12b4b5ec4861c61bf993187af56f532a
[INFO] running `Command { std: "docker" "start" "-a" "9144c4bbb57c57bddab9dcfd1020221f12b4b5ec4861c61bf993187af56f532a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9144c4bbb57c57bddab9dcfd1020221f12b4b5ec4861c61bf993187af56f532a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9144c4bbb57c57bddab9dcfd1020221f12b4b5ec4861c61bf993187af56f532a", kill_on_drop: false }`
[INFO] [stdout] 9144c4bbb57c57bddab9dcfd1020221f12b4b5ec4861c61bf993187af56f532a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7d06175b7c850b7c0cadb8cda30ae5d6ef05066e0b02e2ab15210d7635bea1d
[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" "d7d06175b7c850b7c0cadb8cda30ae5d6ef05066e0b02e2ab15210d7635bea1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking decent-synquote-alternative v0.3.0
[INFO] [stderr]     Checking decent-serde-json-derive-alternative v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.74s
[INFO] running `Command { std: "docker" "inspect" "d7d06175b7c850b7c0cadb8cda30ae5d6ef05066e0b02e2ab15210d7635bea1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7d06175b7c850b7c0cadb8cda30ae5d6ef05066e0b02e2ab15210d7635bea1d", kill_on_drop: false }`
[INFO] [stdout] d7d06175b7c850b7c0cadb8cda30ae5d6ef05066e0b02e2ab15210d7635bea1d