Dec 05 14:55:37.200 INFO checking cryogen_plugin_json-0.1.0 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 14:55:37.200 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-6/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 14:55:37.747 INFO [stdout] 3d374dc9d4fe3d11054ae23445a5604768c12ff682d1458789b46ab39936d086
Dec 05 14:55:37.749 INFO running `"docker" "start" "-a" "3d374dc9d4fe3d11054ae23445a5604768c12ff682d1458789b46ab39936d086"`
Dec 05 14:55:39.294 INFO [stderr] usermod: no changes
Dec 05 14:55:39.363 INFO [stderr] warning: only one of `license` or `license-file` is necessary
Dec 05 14:55:39.491 INFO [stderr]     Checking term_size v0.2.3
Dec 05 14:55:39.511 INFO [stderr]     Checking tera v0.8.1
Dec 05 14:55:40.611 INFO [stderr]     Checking clap v2.20.5
Dec 05 14:55:47.279 INFO [stderr]     Checking cryogen_prelude v0.1.0
Dec 05 14:55:48.427 INFO [stderr]     Checking cryogen_plugin_json v0.1.0 (/source)
Dec 05 14:55:50.787 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.45s
Dec 05 14:55:50.795 INFO [stderr] su: No module specific data is present
Dec 05 14:55:51.357 INFO running `"docker" "inspect" "3d374dc9d4fe3d11054ae23445a5604768c12ff682d1458789b46ab39936d086"`
Dec 05 14:55:51.659 INFO running `"docker" "rm" "-f" "3d374dc9d4fe3d11054ae23445a5604768c12ff682d1458789b46ab39936d086"`
Dec 05 14:55:51.907 INFO [stdout] 3d374dc9d4fe3d11054ae23445a5604768c12ff682d1458789b46ab39936d086