[INFO] crate beagle 0.1.4 is already in cache
[INFO] extracting crate beagle 0.1.4 into work/ex/beta-1.38-1/sources/1.37.0/reg/beagle/0.1.4
[INFO] extracting crate beagle 0.1.4 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/beagle/0.1.4
[INFO] validating manifest of beagle-0.1.4 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of beagle-0.1.4 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing beagle-0.1.4
[INFO] finished frobbing beagle-0.1.4
[INFO] frobbed toml for beagle-0.1.4 written to work/ex/beta-1.38-1/sources/1.37.0/reg/beagle/0.1.4/Cargo.toml
[INFO] started frobbing beagle-0.1.4
[INFO] finished frobbing beagle-0.1.4
[INFO] frobbed toml for beagle-0.1.4 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/beagle/0.1.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing beagle-0.1.4 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/beagle/0.1.4:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 75da39b53497d4044f280c81f94d65cf8ad3b87094b1263c8e21eb4d22c9d512
[INFO] running `"docker" "start" "-a" "75da39b53497d4044f280c81f94d65cf8ad3b87094b1263c8e21eb4d22c9d512"`
[INFO] [stderr]    Compiling beagle v0.1.4 (/opt/crater/workdir)
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> src/lib.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | #![feature(advanced_slice_patterns)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: merged into `#![feature(slice_patterns)]`
[INFO] [stderr]  --> src/lib.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | #![feature(advanced_slice_patterns)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![feature(associated_consts)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | #![feature(slice_patterns)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | #![feature(advanced_slice_patterns)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/vec.rs:401:61
[INFO] [stderr]     |
[INFO] [stderr] 401 | pub fn is_perpendicular<S, T>(s: S, t: T, epsilon_squared: &ApproxZero<<<S::Scalar as Mul>::Output as Mul<<T::Scalar as Mul>::Output>>::Output>) -> bool
[INFO] [stderr]     |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ApproxZero<<<S::Scalar as Mul>::Output as Mul<<T::Scalar as Mul>::Output>>::Output>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0557.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `beagle`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "75da39b53497d4044f280c81f94d65cf8ad3b87094b1263c8e21eb4d22c9d512"`
[INFO] running `"docker" "rm" "-f" "75da39b53497d4044f280c81f94d65cf8ad3b87094b1263c8e21eb4d22c9d512"`
[INFO] [stdout] 75da39b53497d4044f280c81f94d65cf8ad3b87094b1263c8e21eb4d22c9d512