Dec 17 18:09:59.278 INFO checking panicbit/toy_rpn_calc against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 18:09:59.278 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/panicbit/toy_rpn_calc:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 18:09:59.758 INFO [stdout] 3aee79e0542b030216bdd9dfc6f3bdb4d1b8c11cfed5c551578807e97345eccb
Dec 17 18:09:59.760 INFO running `"docker" "start" "-a" "3aee79e0542b030216bdd9dfc6f3bdb4d1b8c11cfed5c551578807e97345eccb"`
Dec 17 18:10:00.911 INFO [stderr]     Checking backtrace v0.3.9
Dec 17 18:10:01.306 INFO [stderr]     Checking failure v0.1.1
Dec 17 18:10:01.718 INFO [stderr]     Checking stackulon v0.1.0 (/opt/crater/workdir)
Dec 17 18:10:02.801 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.97s
Dec 17 18:10:03.200 INFO running `"docker" "inspect" "3aee79e0542b030216bdd9dfc6f3bdb4d1b8c11cfed5c551578807e97345eccb"`
Dec 17 18:10:03.368 INFO running `"docker" "rm" "-f" "3aee79e0542b030216bdd9dfc6f3bdb4d1b8c11cfed5c551578807e97345eccb"`
Dec 17 18:10:03.544 INFO [stdout] 3aee79e0542b030216bdd9dfc6f3bdb4d1b8c11cfed5c551578807e97345eccb