Dec 17 18:24:10.570 INFO checking omaskery/derpy against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 18:24:10.571 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/omaskery/derpy:/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 18:24:11.178 INFO [stdout] 3fb6549132d97d7883c2c36a3385ea1e6667e06dc6c07f48c35fea0cde8110f4
Dec 17 18:24:11.180 INFO running `"docker" "start" "-a" "3fb6549132d97d7883c2c36a3385ea1e6667e06dc6c07f48c35fea0cde8110f4"`
Dec 17 18:24:13.298 INFO [stderr]    Compiling syn v0.13.4
Dec 17 18:24:20.313 INFO [stderr]    Compiling serde_derive_internals v0.23.1
Dec 17 18:24:23.428 INFO [stderr]    Compiling serde_derive v1.0.43
Dec 17 18:24:31.756 INFO [stderr]     Checking derpy v0.1.0 (/opt/crater/workdir)
Dec 17 18:24:33.357 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.21s
Dec 17 18:24:34.023 INFO running `"docker" "inspect" "3fb6549132d97d7883c2c36a3385ea1e6667e06dc6c07f48c35fea0cde8110f4"`
Dec 17 18:24:34.338 INFO running `"docker" "rm" "-f" "3fb6549132d97d7883c2c36a3385ea1e6667e06dc6c07f48c35fea0cde8110f4"`
Dec 17 18:24:34.756 INFO [stdout] 3fb6549132d97d7883c2c36a3385ea1e6667e06dc6c07f48c35fea0cde8110f4