Dec 18 10:35:42.823 INFO checking syn-error-experiment-0.0.0 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 10:35:42.823 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/syn-error-experiment/0.0.0:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 10:35:43.125 INFO [stdout] a406df1041056050dfb10e7b785845e4179865936f278a4bff76adcb6a85768f
Dec 18 10:35:43.127 INFO running `"docker" "start" "-a" "a406df1041056050dfb10e7b785845e4179865936f278a4bff76adcb6a85768f"`
Dec 18 10:35:44.530 INFO [stderr]     Checking quote v0.6.10
Dec 18 10:35:44.893 INFO [stderr]     Checking syn v0.14.9
Dec 18 10:35:45.842 INFO [stderr]     Checking syn-error-experiment v0.0.0 (/opt/crater/workdir)
Dec 18 10:35:46.821 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.31s
Dec 18 10:35:47.630 INFO running `"docker" "inspect" "a406df1041056050dfb10e7b785845e4179865936f278a4bff76adcb6a85768f"`
Dec 18 10:35:47.910 INFO running `"docker" "rm" "-f" "a406df1041056050dfb10e7b785845e4179865936f278a4bff76adcb6a85768f"`
Dec 18 10:35:48.216 INFO [stdout] a406df1041056050dfb10e7b785845e4179865936f278a4bff76adcb6a85768f