[INFO] cloning repository whytekieran/RustProgrammingLanguage-Basics
[INFO] running `"git" "clone" "--bare" "git://github.com/whytekieran/RustProgrammingLanguage-Basics.git" "work/cache/sources/gh/whytekieran/RustProgrammingLanguage-Basics"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/whytekieran/RustProgrammingLanguage-Basics'...
[INFO] running `"git" "clone" "work/cache/sources/gh/whytekieran/RustProgrammingLanguage-Basics" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/whytekieran/RustProgrammingLanguage-Basics"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/whytekieran/RustProgrammingLanguage-Basics'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/whytekieran/RustProgrammingLanguage-Basics" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/whytekieran/RustProgrammingLanguage-Basics"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/whytekieran/RustProgrammingLanguage-Basics'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cf7cbb654ac9b7ba174d109cdfae1fa16289182c
[INFO] sha for GitHub repo whytekieran/RustProgrammingLanguage-Basics: cf7cbb654ac9b7ba174d109cdfae1fa16289182c
[INFO] validating manifest of whytekieran/RustProgrammingLanguage-Basics on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of whytekieran/RustProgrammingLanguage-Basics on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing whytekieran/RustProgrammingLanguage-Basics
[INFO] finished frobbing whytekieran/RustProgrammingLanguage-Basics
[INFO] frobbed toml for whytekieran/RustProgrammingLanguage-Basics written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/whytekieran/RustProgrammingLanguage-Basics/Cargo.toml
[INFO] started frobbing whytekieran/RustProgrammingLanguage-Basics
[INFO] finished frobbing whytekieran/RustProgrammingLanguage-Basics
[INFO] frobbed toml for whytekieran/RustProgrammingLanguage-Basics written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/whytekieran/RustProgrammingLanguage-Basics/Cargo.toml
[INFO] crate whytekieran/RustProgrammingLanguage-Basics has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking whytekieran/RustProgrammingLanguage-Basics against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-1/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/whytekieran/RustProgrammingLanguage-Basics:/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" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6e83430da2a62f3a811a8a2dc56ea23b533dc6d007ac2da4717a8c4eb29381eb
[INFO] running `"docker" "start" "-a" "6e83430da2a62f3a811a8a2dc56ea23b533dc6d007ac2da4717a8c4eb29381eb"`
[INFO] [stderr]     Checking 2_rust_basics v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `acceptdarray`
[INFO] [stderr]    --> src/main.rs:479:1
[INFO] [stderr]     |
[INFO] [stderr] 479 | fn acceptdarray(x: &mut [[i32; 4]]) -> &[[i32; 4]] {  
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `acceptdarray`
[INFO] [stderr]    --> src/main.rs:479:1
[INFO] [stderr]     |
[INFO] [stderr] 479 | fn acceptdarray(x: &mut [[i32; 4]]) -> &[[i32; 4]] {  
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `"docker" "inspect" "6e83430da2a62f3a811a8a2dc56ea23b533dc6d007ac2da4717a8c4eb29381eb"`
[INFO] running `"docker" "rm" "-f" "6e83430da2a62f3a811a8a2dc56ea23b533dc6d007ac2da4717a8c4eb29381eb"`
[INFO] [stdout] 6e83430da2a62f3a811a8a2dc56ea23b533dc6d007ac2da4717a8c4eb29381eb