Dec 18 03:37:06.175 INFO checking azengard/hello-rust against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 03:37:06.175 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/azengard/hello-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 03:37:06.485 INFO [stdout] 73b22189d46eb97ed3ae5815dd0dc85d49605d7eba4a5c13e46c02aeb19f7793
Dec 18 03:37:06.488 INFO running `"docker" "start" "-a" "73b22189d46eb97ed3ae5815dd0dc85d49605d7eba4a5c13e46c02aeb19f7793"`
Dec 18 03:37:08.508 INFO [stderr]     Checking hello-rust v0.1.0 (/opt/crater/workdir)
Dec 18 03:37:08.867 INFO [stderr] warning: struct is never constructed: `Nil`
Dec 18 03:37:08.867 INFO [stderr]   --> src/main.rs:80:1
Dec 18 03:37:08.867 INFO [stderr]    |
Dec 18 03:37:08.867 INFO [stderr] 80 | struct Nil; // unit struct
Dec 18 03:37:08.867 INFO [stderr]    | ^^^^^^^^^^^
Dec 18 03:37:08.867 INFO [stderr]    |
Dec 18 03:37:08.867 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 03:37:08.867 INFO [stderr] 
Dec 18 03:37:08.867 INFO [stderr] warning: struct is never constructed: `Pair`
Dec 18 03:37:08.867 INFO [stderr]   --> src/main.rs:82:1
Dec 18 03:37:08.867 INFO [stderr]    |
Dec 18 03:37:08.867 INFO [stderr] 82 | struct Pair(i32, f32); //tuple struct
Dec 18 03:37:08.867 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:37:08.867 INFO [stderr] 
Dec 18 03:37:08.868 INFO [stderr] warning: struct is never constructed: `Nil`
Dec 18 03:37:08.868 INFO [stderr]   --> src/main.rs:80:1
Dec 18 03:37:08.868 INFO [stderr]    |
Dec 18 03:37:08.868 INFO [stderr] 80 | struct Nil; // unit struct
Dec 18 03:37:08.868 INFO [stderr]    | ^^^^^^^^^^^
Dec 18 03:37:08.868 INFO [stderr]    |
Dec 18 03:37:08.868 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 03:37:08.868 INFO [stderr] 
Dec 18 03:37:08.868 INFO [stderr] warning: struct is never constructed: `Pair`
Dec 18 03:37:08.868 INFO [stderr]   --> src/main.rs:82:1
Dec 18 03:37:08.868 INFO [stderr]    |
Dec 18 03:37:08.868 INFO [stderr] 82 | struct Pair(i32, f32); //tuple struct
Dec 18 03:37:08.868 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:37:08.868 INFO [stderr] 
Dec 18 03:37:08.930 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
Dec 18 03:37:09.514 INFO running `"docker" "inspect" "73b22189d46eb97ed3ae5815dd0dc85d49605d7eba4a5c13e46c02aeb19f7793"`
Dec 18 03:37:09.716 INFO running `"docker" "rm" "-f" "73b22189d46eb97ed3ae5815dd0dc85d49605d7eba4a5c13e46c02aeb19f7793"`
Dec 18 03:37:09.950 INFO [stdout] 73b22189d46eb97ed3ae5815dd0dc85d49605d7eba4a5c13e46c02aeb19f7793