[INFO] updating cached repository whytekieran/RustProgrammingLanguage-Basics
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/whytekieran/RustProgrammingLanguage-Basics
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/whytekieran/RustProgrammingLanguage-Basics" "work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/whytekieran/RustProgrammingLanguage-Basics"`
[INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/whytekieran/RustProgrammingLanguage-Basics'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/whytekieran/RustProgrammingLanguage-Basics" "work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/whytekieran/RustProgrammingLanguage-Basics"`
[INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/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#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of whytekieran/RustProgrammingLanguage-Basics on toolchain try#74092351c05ae61047b2be02024415546595e974
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-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-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/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-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/whytekieran/RustProgrammingLanguage-Basics/Cargo.toml
[INFO] crate whytekieran/RustProgrammingLanguage-Basics already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking whytekieran/RustProgrammingLanguage-Basics against try#74092351c05ae61047b2be02024415546595e974 for pr-60174
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60174/worker-2/try#74092351c05ae61047b2be02024415546595e974:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/whytekieran/RustProgrammingLanguage-Basics:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+74092351c05ae61047b2be02024415546595e974-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 21c40dce37ab001071444679ecad7186a863ed0b6293a43301c666b0b673febb
[INFO] running `"docker" "start" "-a" "21c40dce37ab001071444679ecad7186a863ed0b6293a43301c666b0b673febb"`
[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 0.54s
[INFO] running `"docker" "inspect" "21c40dce37ab001071444679ecad7186a863ed0b6293a43301c666b0b673febb"`
[INFO] running `"docker" "rm" "-f" "21c40dce37ab001071444679ecad7186a863ed0b6293a43301c666b0b673febb"`
[INFO] [stdout] 21c40dce37ab001071444679ecad7186a863ed0b6293a43301c666b0b673febb