Dec 19 20:29:35.775 INFO checking andrewnester/rust-jsonm against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 20:29:35.775 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/andrewnester/rust-jsonm:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 20:29:36.258 INFO [stdout] 89db0f06bca12a5c4c7c37cbdc5325e429e509dc29c1dd4bb2788baa2f574456
Dec 19 20:29:36.264 INFO running `"docker" "start" "-a" "89db0f06bca12a5c4c7c37cbdc5325e429e509dc29c1dd4bb2788baa2f574456"`
Dec 19 20:29:38.096 INFO [stderr]     Checking serde_json v1.0.24
Dec 19 20:29:40.288 INFO [stderr]     Checking jsonm v0.1.3 (/opt/crater/workdir)
Dec 19 20:29:42.380 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.36s
Dec 19 20:29:42.807 INFO running `"docker" "inspect" "89db0f06bca12a5c4c7c37cbdc5325e429e509dc29c1dd4bb2788baa2f574456"`
Dec 19 20:29:42.946 INFO running `"docker" "rm" "-f" "89db0f06bca12a5c4c7c37cbdc5325e429e509dc29c1dd4bb2788baa2f574456"`
Dec 19 20:29:43.110 INFO [stdout] 89db0f06bca12a5c4c7c37cbdc5325e429e509dc29c1dd4bb2788baa2f574456