[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-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/study-core/my-rust-coding-studing"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/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-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/study-core/my-rust-coding-studing"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/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#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of study-core/my-rust-coding-studing on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-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-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/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-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/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/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking study-core/my-rust-coding-studing against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-0/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/study-core/my-rust-coding-studing:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b02812b115ff4a8411a83de43388cc46e1b188cee2c92597f46bcf0f9bf923df
[INFO] running `"docker" "start" "-a" "b02812b115ff4a8411a83de43388cc46e1b188cee2c92597f46bcf0f9bf923df"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 0.80s
[INFO] running `"docker" "inspect" "b02812b115ff4a8411a83de43388cc46e1b188cee2c92597f46bcf0f9bf923df"`
[INFO] running `"docker" "rm" "-f" "b02812b115ff4a8411a83de43388cc46e1b188cee2c92597f46bcf0f9bf923df"`
[INFO] [stdout] b02812b115ff4a8411a83de43388cc46e1b188cee2c92597f46bcf0f9bf923df