[INFO] updating cached repository sejr/core-interpreter
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sejr/core-interpreter
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sejr/core-interpreter" "work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/sejr/core-interpreter"`
[INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/sejr/core-interpreter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sejr/core-interpreter" "work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/sejr/core-interpreter"`
[INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/sejr/core-interpreter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 64c00c6dba34face0a27e389ac2cd2e2b4bc4976
[INFO] sha for GitHub repo sejr/core-interpreter: 64c00c6dba34face0a27e389ac2cd2e2b4bc4976
[INFO] validating manifest of sejr/core-interpreter 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 sejr/core-interpreter 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 sejr/core-interpreter
[INFO] finished frobbing sejr/core-interpreter
[INFO] frobbed toml for sejr/core-interpreter written to work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/sejr/core-interpreter/Cargo.toml
[INFO] started frobbing sejr/core-interpreter
[INFO] finished frobbing sejr/core-interpreter
[INFO] frobbed toml for sejr/core-interpreter written to work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/sejr/core-interpreter/Cargo.toml
[INFO] crate sejr/core-interpreter 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 sejr/core-interpreter 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/sejr/core-interpreter:/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] 0372bf79492deb7b94dfef004452f4a7735ee0056ff4b4801d10c6694299cd45
[INFO] running `"docker" "start" "-a" "0372bf79492deb7b94dfef004452f4a7735ee0056ff4b4801d10c6694299cd45"`
[INFO] [stderr]     Checking core v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]    --> src/tokenizer.rs:309:9
[INFO] [stderr]     |
[INFO] [stderr] 309 |         i + 1;
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]    --> src/tokenizer.rs:309:9
[INFO] [stderr]     |
[INFO] [stderr] 309 |         i + 1;
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `"docker" "inspect" "0372bf79492deb7b94dfef004452f4a7735ee0056ff4b4801d10c6694299cd45"`
[INFO] running `"docker" "rm" "-f" "0372bf79492deb7b94dfef004452f4a7735ee0056ff4b4801d10c6694299cd45"`
[INFO] [stdout] 0372bf79492deb7b94dfef004452f4a7735ee0056ff4b4801d10c6694299cd45