[INFO] fetching crate unibox 0.2.0...
[INFO] checking unibox-0.2.0 against master#5ad98b4026d5172f27615b105658bc8bfd677be8 for pr-129422
[INFO] extracting crate unibox 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate unibox 0.2.0 on toolchain 5ad98b4026d5172f27615b105658bc8bfd677be8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unibox 0.2.0
[INFO] finished tweaking crates.io crate unibox 0.2.0
[INFO] tweaked toml for crates.io crate unibox 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate unibox 0.2.0 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" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b1e3f743b2336024ab8ffbdd444116b14026727339948e50ad437322609392f5
[INFO] running `Command { std: "docker" "start" "-a" "b1e3f743b2336024ab8ffbdd444116b14026727339948e50ad437322609392f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1e3f743b2336024ab8ffbdd444116b14026727339948e50ad437322609392f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1e3f743b2336024ab8ffbdd444116b14026727339948e50ad437322609392f5", kill_on_drop: false }`
[INFO] [stdout] b1e3f743b2336024ab8ffbdd444116b14026727339948e50ad437322609392f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 33a385738b5ed958a26ed0d1685b37a88914f61abb0280152f8d7da154e6a43b
[INFO] running `Command { std: "docker" "start" "-a" "33a385738b5ed958a26ed0d1685b37a88914f61abb0280152f8d7da154e6a43b", kill_on_drop: false }`
[INFO] [stderr]     Checking unibox v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `color_ref` is never read
[INFO] [stdout]    --> src/main.rs:230:9
[INFO] [stdout]     |
[INFO] [stdout] 229 |     struct MyStruct<'a> {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] 230 |         color_ref: &'a Box<Color>
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MyStruct` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "33a385738b5ed958a26ed0d1685b37a88914f61abb0280152f8d7da154e6a43b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33a385738b5ed958a26ed0d1685b37a88914f61abb0280152f8d7da154e6a43b", kill_on_drop: false }`
[INFO] [stdout] 33a385738b5ed958a26ed0d1685b37a88914f61abb0280152f8d7da154e6a43b