[INFO] updating cached repository study-core/my-rust-coding-studing
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/study-core/my-rust-coding-studing
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/study-core/my-rust-coding-studing" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/study-core/my-rust-coding-studing"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/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-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/study-core/my-rust-coding-studing"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/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#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of study-core/my-rust-coding-studing on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-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-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/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-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-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 try#75eff020d0923c035c2fe220db4a0465cd847048 for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-3/try#75eff020d0923c035c2fe220db4a0465cd847048:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/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" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6344aea6c5b7187af28d95ee53a11bffae787d79e0d788d4491c124fc5ac297c
[INFO] running `"docker" "start" "-a" "6344aea6c5b7187af28d95ee53a11bffae787d79e0d788d4491c124fc5ac297c"`
[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 0.99s
[INFO] running `"docker" "inspect" "6344aea6c5b7187af28d95ee53a11bffae787d79e0d788d4491c124fc5ac297c"`
[INFO] running `"docker" "rm" "-f" "6344aea6c5b7187af28d95ee53a11bffae787d79e0d788d4491c124fc5ac297c"`
[INFO] [stdout] 6344aea6c5b7187af28d95ee53a11bffae787d79e0d788d4491c124fc5ac297c