Dec 19 21:07:51.286 INFO checking abhijat/rust-network-stuff against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 21:07:51.286 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/abhijat/rust-network-stuff:/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 21:07:51.852 INFO [stdout] ac0b4be28d0bcf40d272fb7caa96ad8e19280ba6803311b45cf31cecd8702d85
Dec 19 21:07:51.855 INFO running `"docker" "start" "-a" "ac0b4be28d0bcf40d272fb7caa96ad8e19280ba6803311b45cf31cecd8702d85"`
Dec 19 21:07:53.508 INFO [stderr]     Checking users v0.6.1
Dec 19 21:07:53.511 INFO [stderr]     Checking serde_json v1.0.11
Dec 19 21:07:55.979 INFO [stderr]     Checking simple-tcp-server-client v0.1.0 (/opt/crater/workdir)
Dec 19 21:07:57.208 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.81s
Dec 19 21:07:57.814 INFO running `"docker" "inspect" "ac0b4be28d0bcf40d272fb7caa96ad8e19280ba6803311b45cf31cecd8702d85"`
Dec 19 21:07:57.909 INFO running `"docker" "rm" "-f" "ac0b4be28d0bcf40d272fb7caa96ad8e19280ba6803311b45cf31cecd8702d85"`
Dec 19 21:07:58.029 INFO [stdout] ac0b4be28d0bcf40d272fb7caa96ad8e19280ba6803311b45cf31cecd8702d85