[INFO] cloning repository https://github.com/shaopengw/cargo-check-bug-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shaopengw/cargo-check-bug-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshaopengw%2Fcargo-check-bug-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshaopengw%2Fcargo-check-bug-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1100e314cb3d5df3583ac01fffceebce699cacd0
[INFO] checking shaopengw/cargo-check-bug-demo against master#fc81ad22c453776de16acf9938976930cf8c9401 for pr-77325
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshaopengw%2Fcargo-check-bug-demo" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shaopengw/cargo-check-bug-demo on toolchain fc81ad22c453776de16acf9938976930cf8c9401
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shaopengw/cargo-check-bug-demo
[INFO] finished tweaking git repo https://github.com/shaopengw/cargo-check-bug-demo
[INFO] tweaked toml for git repo https://github.com/shaopengw/cargo-check-bug-demo written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/shaopengw/cargo-check-bug-demo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6828cd7687e2f006a76574fa967b6525ecabc3ce5ad8d5bdf61dfcf400686fb2
[INFO] running `Command { std: "docker" "start" "-a" "6828cd7687e2f006a76574fa967b6525ecabc3ce5ad8d5bdf61dfcf400686fb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6828cd7687e2f006a76574fa967b6525ecabc3ce5ad8d5bdf61dfcf400686fb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6828cd7687e2f006a76574fa967b6525ecabc3ce5ad8d5bdf61dfcf400686fb2", kill_on_drop: false }`
[INFO] [stdout] 6828cd7687e2f006a76574fa967b6525ecabc3ce5ad8d5bdf61dfcf400686fb2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+fc81ad22c453776de16acf9938976930cf8c9401" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de8d865412f448ceb068ed1d44e68815c35dec93268ae867d6a0667cb06699d7
[INFO] running `Command { std: "docker" "start" "-a" "de8d865412f448ceb068ed1d44e68815c35dec93268ae867d6a0667cb06699d7", kill_on_drop: false }`
[INFO] [stderr]     Checking box-bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `data`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     data: Box<Enum>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     data: Box<Enum>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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 [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "de8d865412f448ceb068ed1d44e68815c35dec93268ae867d6a0667cb06699d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de8d865412f448ceb068ed1d44e68815c35dec93268ae867d6a0667cb06699d7", kill_on_drop: false }`
[INFO] [stdout] de8d865412f448ceb068ed1d44e68815c35dec93268ae867d6a0667cb06699d7