Dec 18 18:03:02.568 INFO checking breadboard-0.1.0 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 18:03:02.568 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/breadboard/0.1.0:/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 18:03:02.812 INFO [stdout] 3d18b4feb5b4ba544deea739640340b980aedbe0dc7eb7eb0f544a5386c11f0e
Dec 18 18:03:02.814 INFO running `"docker" "start" "-a" "3d18b4feb5b4ba544deea739640340b980aedbe0dc7eb7eb0f544a5386c11f0e"`
Dec 18 18:03:03.616 INFO [stderr]     Checking breadboard v0.1.0 (/opt/crater/workdir)
Dec 18 18:03:03.720 INFO [stderr] warning: `dyn` is a keyword in the 2018 edition
Dec 18 18:03:03.720 INFO [stderr]    --> src/lib.rs:259:25
Dec 18 18:03:03.720 INFO [stderr]     |
Dec 18 18:03:03.720 INFO [stderr] 259 |             E: Into<Box<dyn std::error::Error + Send + Sync>>,
Dec 18 18:03:03.720 INFO [stderr]     |                         ^^^ help: you can use a raw identifier to stay compatible: `r#dyn`
Dec 18 18:03:03.720 INFO [stderr]     |
Dec 18 18:03:03.720 INFO [stderr] note: lint level defined here
Dec 18 18:03:03.720 INFO [stderr]    --> src/lib.rs:130:5
Dec 18 18:03:03.720 INFO [stderr]     |
Dec 18 18:03:03.720 INFO [stderr] 130 |     rust_2018_compatibility,
Dec 18 18:03:03.720 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 18:03:03.720 INFO [stderr]     = note: #[warn(keyword_idents)] implied by #[warn(rust_2018_compatibility)]
Dec 18 18:03:03.720 INFO [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
Dec 18 18:03:03.720 INFO [stderr]     = note: for more information, see issue #49716 <https://github.com/rust-lang/rust/issues/49716>
Dec 18 18:03:03.720 INFO [stderr] 
Dec 18 18:03:03.784 INFO [stderr] warning: `dyn` is a keyword in the 2018 edition
Dec 18 18:03:03.784 INFO [stderr]    --> src/lib.rs:259:25
Dec 18 18:03:03.784 INFO [stderr]     |
Dec 18 18:03:03.784 INFO [stderr] 259 |             E: Into<Box<dyn std::error::Error + Send + Sync>>,
Dec 18 18:03:03.784 INFO [stderr]     |                         ^^^ help: you can use a raw identifier to stay compatible: `r#dyn`
Dec 18 18:03:03.784 INFO [stderr]     |
Dec 18 18:03:03.784 INFO [stderr] note: lint level defined here
Dec 18 18:03:03.784 INFO [stderr]    --> src/lib.rs:130:5
Dec 18 18:03:03.784 INFO [stderr]     |
Dec 18 18:03:03.784 INFO [stderr] 130 |     rust_2018_compatibility,
Dec 18 18:03:03.784 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 18:03:03.784 INFO [stderr]     = note: #[warn(keyword_idents)] implied by #[warn(rust_2018_compatibility)]
Dec 18 18:03:03.784 INFO [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
Dec 18 18:03:03.784 INFO [stderr]     = note: for more information, see issue #49716 <https://github.com/rust-lang/rust/issues/49716>
Dec 18 18:03:03.784 INFO [stderr] 
Dec 18 18:03:07.636 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.18s
Dec 18 18:03:08.732 INFO running `"docker" "inspect" "3d18b4feb5b4ba544deea739640340b980aedbe0dc7eb7eb0f544a5386c11f0e"`
Dec 18 18:03:09.063 INFO running `"docker" "rm" "-f" "3d18b4feb5b4ba544deea739640340b980aedbe0dc7eb7eb0f544a5386c11f0e"`
Dec 18 18:03:09.343 INFO [stdout] 3d18b4feb5b4ba544deea739640340b980aedbe0dc7eb7eb0f544a5386c11f0e