[INFO] updating cached repository enizor/synacor-challenge
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/enizor/synacor-challenge
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/enizor/synacor-challenge" "work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/enizor/synacor-challenge"`
[INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/enizor/synacor-challenge'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/enizor/synacor-challenge" "work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/enizor/synacor-challenge"`
[INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/enizor/synacor-challenge'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9bb642c9d39a0518a5e93e62b753ef46521098b3
[INFO] sha for GitHub repo enizor/synacor-challenge: 9bb642c9d39a0518a5e93e62b753ef46521098b3
[INFO] validating manifest of enizor/synacor-challenge 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 enizor/synacor-challenge 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 enizor/synacor-challenge
[INFO] finished frobbing enizor/synacor-challenge
[INFO] frobbed toml for enizor/synacor-challenge written to work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/enizor/synacor-challenge/Cargo.toml
[INFO] started frobbing enizor/synacor-challenge
[INFO] finished frobbing enizor/synacor-challenge
[INFO] frobbed toml for enizor/synacor-challenge written to work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/enizor/synacor-challenge/Cargo.toml
[INFO] crate enizor/synacor-challenge 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 enizor/synacor-challenge against try#74092351c05ae61047b2be02024415546595e974 for pr-60174
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60174/worker-6/try#74092351c05ae61047b2be02024415546595e974:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/enizor/synacor-challenge:/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] 7a85ccd915c05305e85bc900a5396df6c7998c4852a9d81c009994fad4de33e7
[INFO] running `"docker" "start" "-a" "7a85ccd915c05305e85bc900a5396df6c7998c4852a9d81c009994fad4de33e7"`
[INFO] [stderr]     Checking synacor-challenge v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `"docker" "inspect" "7a85ccd915c05305e85bc900a5396df6c7998c4852a9d81c009994fad4de33e7"`
[INFO] running `"docker" "rm" "-f" "7a85ccd915c05305e85bc900a5396df6c7998c4852a9d81c009994fad4de33e7"`
[INFO] [stdout] 7a85ccd915c05305e85bc900a5396df6c7998c4852a9d81c009994fad4de33e7