Dec 19 12:03:20.176 INFO checking naokiri/sandbox against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 12:03:20.176 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/naokiri/sandbox:/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 12:03:20.580 INFO [stdout] d366132052faea494611043cb33d22b9a312cbe2e4f58c356b3ae2c18231077e
Dec 19 12:03:20.582 INFO running `"docker" "start" "-a" "d366132052faea494611043cb33d22b9a312cbe2e4f58c356b3ae2c18231077e"`
Dec 19 12:03:23.889 INFO [stderr]    Compiling stdweb-internal-runtime v0.1.0
Dec 19 12:03:23.894 INFO [stderr]    Compiling syn v0.14.9
Dec 19 12:03:36.475 INFO [stderr]    Compiling stdweb-derive v0.5.0
Dec 19 12:03:38.772 INFO [stderr]     Checking stdweb v0.4.9
Dec 19 12:03:54.717 INFO [stderr]     Checking sandbox v0.1.0 (/opt/crater/workdir)
Dec 19 12:03:55.201 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.42s
Dec 19 12:03:55.931 INFO running `"docker" "inspect" "d366132052faea494611043cb33d22b9a312cbe2e4f58c356b3ae2c18231077e"`
Dec 19 12:03:56.186 INFO running `"docker" "rm" "-f" "d366132052faea494611043cb33d22b9a312cbe2e4f58c356b3ae2c18231077e"`
Dec 19 12:03:56.368 INFO [stdout] d366132052faea494611043cb33d22b9a312cbe2e4f58c356b3ae2c18231077e