[INFO] fetching crate serialzero 0.1.0...
[INFO] checking serialzero-0.1.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate serialzero 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate serialzero 0.1.0
[INFO] finished tweaking crates.io crate serialzero 0.1.0
[INFO] tweaked toml for crates.io crate serialzero 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serialzero 0.1.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate serialzero 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6e89594c043fc203ea9955f0083b9c8831eadbb7981665143a33bc45d81d0f1
[INFO] running `Command { std: "docker" "start" "-a" "b6e89594c043fc203ea9955f0083b9c8831eadbb7981665143a33bc45d81d0f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6e89594c043fc203ea9955f0083b9c8831eadbb7981665143a33bc45d81d0f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6e89594c043fc203ea9955f0083b9c8831eadbb7981665143a33bc45d81d0f1", kill_on_drop: false }`
[INFO] [stdout] b6e89594c043fc203ea9955f0083b9c8831eadbb7981665143a33bc45d81d0f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8fb147b8fdb60d9ba8b8b3f386b138143bd13319ed846e63317e4659927f6bd
[INFO] running `Command { std: "docker" "start" "-a" "c8fb147b8fdb60d9ba8b8b3f386b138143bd13319ed846e63317e4659927f6bd", kill_on_drop: false }`
[INFO] [stderr]     Checking serialzero v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "c8fb147b8fdb60d9ba8b8b3f386b138143bd13319ed846e63317e4659927f6bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8fb147b8fdb60d9ba8b8b3f386b138143bd13319ed846e63317e4659927f6bd", kill_on_drop: false }`
[INFO] [stdout] c8fb147b8fdb60d9ba8b8b3f386b138143bd13319ed846e63317e4659927f6bd