[INFO] cloning repository study-core/my-rust-coding-studing
[INFO] running `"git" "clone" "--bare" "git://github.com/study-core/my-rust-coding-studing.git" "work/cache/sources/gh/study-core/my-rust-coding-studing"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/study-core/my-rust-coding-studing'...
[INFO] running `"git" "clone" "work/cache/sources/gh/study-core/my-rust-coding-studing" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/study-core/my-rust-coding-studing"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/study-core/my-rust-coding-studing'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/study-core/my-rust-coding-studing" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/study-core/my-rust-coding-studing"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/study-core/my-rust-coding-studing'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8e6b443db950a7d032f2304d3f8403bb7960e231
[INFO] sha for GitHub repo study-core/my-rust-coding-studing: 8e6b443db950a7d032f2304d3f8403bb7960e231
[INFO] validating manifest of study-core/my-rust-coding-studing on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of study-core/my-rust-coding-studing on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing study-core/my-rust-coding-studing
[INFO] finished frobbing study-core/my-rust-coding-studing
[INFO] frobbed toml for study-core/my-rust-coding-studing written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/study-core/my-rust-coding-studing/Cargo.toml
[INFO] started frobbing study-core/my-rust-coding-studing
[INFO] finished frobbing study-core/my-rust-coding-studing
[INFO] frobbed toml for study-core/my-rust-coding-studing written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/study-core/my-rust-coding-studing/Cargo.toml
[INFO] crate study-core/my-rust-coding-studing already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking study-core/my-rust-coding-studing against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-4/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/study-core/my-rust-coding-studing:/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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b6f3ca4b8b75f0a5a25dbbe06ada2ec23cfc2312f0e2e355f7bee0c2dae5e1bb
[INFO] running `"docker" "start" "-a" "b6f3ca4b8b75f0a5a25dbbe06ada2ec23cfc2312f0e2e355f7bee0c2dae5e1bb"`
[INFO] [stderr]     Checking first_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `Counter`
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Counter {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/lib.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     fn new() -> Counter {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `value`
[INFO] [stderr]     --> src/main.rs:1969:5
[INFO] [stderr]      |
[INFO] [stderr] 1969 |     value: i32,
[INFO] [stderr]      |     ^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `value`
[INFO] [stderr]     --> src/main.rs:1969:5
[INFO] [stderr]      |
[INFO] [stderr] 1969 |     value: i32,
[INFO] [stderr]      |     ^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `"docker" "inspect" "b6f3ca4b8b75f0a5a25dbbe06ada2ec23cfc2312f0e2e355f7bee0c2dae5e1bb"`
[INFO] running `"docker" "rm" "-f" "b6f3ca4b8b75f0a5a25dbbe06ada2ec23cfc2312f0e2e355f7bee0c2dae5e1bb"`
[INFO] [stdout] b6f3ca4b8b75f0a5a25dbbe06ada2ec23cfc2312f0e2e355f7bee0c2dae5e1bb