[INFO] fetching crate prototk 0.12.0...
[INFO] checking prototk-0.12.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate prototk 0.12.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate prototk 0.12.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate prototk 0.12.0
[INFO] tweaked toml for crates.io crate prototk 0.12.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate prototk 0.12.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] fe1b996bf2f7be838cd34df7511bf64a635ba3d2e77d729563dd688b62eaf052
[INFO] running `Command { std: "docker" "start" "-a" "fe1b996bf2f7be838cd34df7511bf64a635ba3d2e77d729563dd688b62eaf052", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe1b996bf2f7be838cd34df7511bf64a635ba3d2e77d729563dd688b62eaf052", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe1b996bf2f7be838cd34df7511bf64a635ba3d2e77d729563dd688b62eaf052", kill_on_drop: false }`
[INFO] [stdout] fe1b996bf2f7be838cd34df7511bf64a635ba3d2e77d729563dd688b62eaf052
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] c288bca1b651a7eb0c763c195db7412b805cff9ea269a82856df534506b96037
[INFO] running `Command { std: "docker" "start" "-a" "c288bca1b651a7eb0c763c195db7412b805cff9ea269a82856df534506b96037", kill_on_drop: false }`
[INFO] [stderr]    Compiling buffertk v0.12.0
[INFO] [stderr]     Checking zerror v0.7.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling prototk_derive v0.12.0
[INFO] [stderr]     Checking prototk v0.12.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Bar` is never constructed
[INFO] [stdout]   --> tests/result.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct Bar {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.77s
[INFO] running `Command { std: "docker" "inspect" "c288bca1b651a7eb0c763c195db7412b805cff9ea269a82856df534506b96037", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c288bca1b651a7eb0c763c195db7412b805cff9ea269a82856df534506b96037", kill_on_drop: false }`
[INFO] [stdout] c288bca1b651a7eb0c763c195db7412b805cff9ea269a82856df534506b96037