Dec 18 16:54:51.243 INFO checking dual-0.2.0 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 16:54:51.243 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/dual/0.2.0:/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 18 16:54:51.683 INFO [stdout] d29a9d6c61fd1dbc185255cf3f55fcaf27a511bcb3af90b46034ba5861f3f004
Dec 18 16:54:51.686 INFO running `"docker" "start" "-a" "d29a9d6c61fd1dbc185255cf3f55fcaf27a511bcb3af90b46034ba5861f3f004"`
Dec 18 16:54:52.907 INFO [stderr] warning: path `/opt/crater/workdir/src/dual.rs` was erroneously implicitly accepted for library `dual`,
Dec 18 16:54:52.907 INFO [stderr] please rename the file to `src/lib.rs` or set lib.path in Cargo.toml
Dec 18 16:54:52.992 INFO [stderr]     Checking dual v0.2.0 (/opt/crater/workdir)
Dec 18 16:54:54.176 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
Dec 18 16:54:55.184 INFO running `"docker" "inspect" "d29a9d6c61fd1dbc185255cf3f55fcaf27a511bcb3af90b46034ba5861f3f004"`
Dec 18 16:54:55.355 INFO running `"docker" "rm" "-f" "d29a9d6c61fd1dbc185255cf3f55fcaf27a511bcb3af90b46034ba5861f3f004"`
Dec 18 16:54:55.552 INFO [stdout] d29a9d6c61fd1dbc185255cf3f55fcaf27a511bcb3af90b46034ba5861f3f004