[INFO] fetching crate minutiae 0.12.2...
[INFO] extracting crate minutiae 0.12.2 into work/ex/beta-1.37-6/sources/1.36.0/reg/minutiae/0.12.2
[INFO] extracting crate minutiae 0.12.2 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/minutiae/0.12.2
[INFO] validating manifest of minutiae-0.12.2 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of minutiae-0.12.2 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing minutiae-0.12.2
[INFO] finished frobbing minutiae-0.12.2
[INFO] frobbed toml for minutiae-0.12.2 written to work/ex/beta-1.37-6/sources/1.36.0/reg/minutiae/0.12.2/Cargo.toml
[INFO] started frobbing minutiae-0.12.2
[INFO] finished frobbing minutiae-0.12.2
[INFO] frobbed toml for minutiae-0.12.2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/minutiae/0.12.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing minutiae-0.12.2 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/minutiae/0.12.2:/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=warn" "-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 203578bab17d7c344ba6d8acae14a8920c86d184656e1fe8dec7134270de5b3d
[INFO] running `"docker" "start" "-a" "203578bab17d7c344ba6d8acae14a8920c86d184656e1fe8dec7134270de5b3d"`
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]    Compiling uuid v0.7.4
[INFO] [stderr]    Compiling minutiae v0.12.2 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:4:1
[INFO] [stderr]    |
[INFO] [stderr] 4  | / #![feature(
[INFO] [stderr] 5  | |     associated_type_defaults,
[INFO] [stderr] 6  | |     box_syntax,
[INFO] [stderr] 7  | |     core_intrinsics,
[INFO] [stderr] ...  |
[INFO] [stderr] 14 | |     const_transmute
[INFO] [stderr] 15 | | )]
[INFO] [stderr]    | |__^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `minutiae`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "203578bab17d7c344ba6d8acae14a8920c86d184656e1fe8dec7134270de5b3d"`
[INFO] running `"docker" "rm" "-f" "203578bab17d7c344ba6d8acae14a8920c86d184656e1fe8dec7134270de5b3d"`
[INFO] [stdout] 203578bab17d7c344ba6d8acae14a8920c86d184656e1fe8dec7134270de5b3d