Dec 18 08:55:36.701 INFO checking zerodmg-0.1.9 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 08:55:36.701 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/zerodmg/0.1.9:/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 08:55:37.168 INFO [stdout] dc84c50a557a646b8e3fcf6b75b6e26861e5acfe430966bef04f8d2337713c8a
Dec 18 08:55:37.170 INFO running `"docker" "start" "-a" "dc84c50a557a646b8e3fcf6b75b6e26861e5acfe430966bef04f8d2337713c8a"`
Dec 18 08:55:38.600 INFO [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
Dec 18 08:55:39.104 INFO [stderr]    Compiling syn v0.13.11
Dec 18 08:55:39.104 INFO [stderr]    Compiling syn v0.15.23
Dec 18 08:55:39.104 INFO [stderr]     Checking tokio-core v0.1.17
Dec 18 08:55:43.324 INFO [stderr]     Checking tokio-proto v0.1.1
Dec 18 08:55:50.145 INFO [stderr]     Checking hyper v0.11.27
Dec 18 08:55:50.272 INFO [stderr]    Compiling num-derive v0.2.3
Dec 18 08:55:54.920 INFO [stderr]    Compiling derive_more v0.11.0
Dec 18 08:56:00.233 INFO [stderr]     Checking image v0.19.0
Dec 18 08:56:04.474 INFO [stderr]     Checking zerodmg-utils v0.1.9
Dec 18 08:56:04.684 INFO [stderr]     Checking zerodmg-codes v0.1.9
Dec 18 08:56:05.265 INFO [stderr] error[E0635]: unknown feature `rust_2018_idioms`
Dec 18 08:56:05.265 INFO [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/zerodmg-codes-0.1.9/src/lib.rs:2:12
Dec 18 08:56:05.265 INFO [stderr]   |
Dec 18 08:56:05.265 INFO [stderr] 2 | #![feature(rust_2018_idioms)]
Dec 18 08:56:05.265 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 18 08:56:05.265 INFO [stderr] 
Dec 18 08:56:05.275 INFO [stderr] error: aborting due to previous error
Dec 18 08:56:05.275 INFO [stderr] 
Dec 18 08:56:05.275 INFO [stderr] For more information about this error, try `rustc --explain E0635`.
Dec 18 08:56:05.296 INFO [stderr] error: Could not compile `zerodmg-codes`.
Dec 18 08:56:05.296 INFO [stderr] 
Dec 18 08:56:05.296 INFO [stderr] To learn more, run the command again with --verbose.
Dec 18 08:56:05.752 INFO running `"docker" "inspect" "dc84c50a557a646b8e3fcf6b75b6e26861e5acfe430966bef04f8d2337713c8a"`
Dec 18 08:56:05.882 INFO running `"docker" "rm" "-f" "dc84c50a557a646b8e3fcf6b75b6e26861e5acfe430966bef04f8d2337713c8a"`
Dec 18 08:56:05.975 INFO [stdout] dc84c50a557a646b8e3fcf6b75b6e26861e5acfe430966bef04f8d2337713c8a