[INFO] crate orbtk-simple-modal 0.1.0 is already in cache
[INFO] extracting crate orbtk-simple-modal 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/orbtk-simple-modal/0.1.0
[INFO] extracting crate orbtk-simple-modal 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/orbtk-simple-modal/0.1.0
[INFO] validating manifest of orbtk-simple-modal-0.1.0 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 orbtk-simple-modal-0.1.0 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 orbtk-simple-modal-0.1.0
[INFO] finished frobbing orbtk-simple-modal-0.1.0
[INFO] frobbed toml for orbtk-simple-modal-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/orbtk-simple-modal/0.1.0/Cargo.toml
[INFO] started frobbing orbtk-simple-modal-0.1.0
[INFO] finished frobbing orbtk-simple-modal-0.1.0
[INFO] frobbed toml for orbtk-simple-modal-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/orbtk-simple-modal/0.1.0/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 orbtk-simple-modal-0.1.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/orbtk-simple-modal/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=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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] c67df2db8bf7645247fa74b79d8695144d1c1d969aaea80d958ddecb0f730b6d
[INFO] running `"docker" "start" "-a" "c67df2db8bf7645247fa74b79d8695144d1c1d969aaea80d958ddecb0f730b6d"`
[INFO] [stderr]    Compiling sdl2 v0.32.2
[INFO] [stderr]    Compiling syn v1.0.3
[INFO] [stderr]    Compiling procedural-masquerade v0.1.6
[INFO] [stderr]    Compiling resize v0.3.0
[INFO] [stderr]    Compiling sdl2-sys v0.32.6
[INFO] [stderr]    Compiling cssparser v0.16.1
[INFO] [stderr]    Compiling png v0.14.1
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling image v0.21.3
[INFO] [stderr]    Compiling orbclient v0.3.27
[INFO] [stderr]    Compiling orbimage v0.1.17
[INFO] [stderr]    Compiling orbfont v0.1.8
[INFO] [stderr]    Compiling cssparser-macros v0.3.6
[INFO] [stderr]    Compiling orbtk v0.2.29
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/orbtk-0.2.29/src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(const_fn)]
[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 `orbtk`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c67df2db8bf7645247fa74b79d8695144d1c1d969aaea80d958ddecb0f730b6d"`
[INFO] running `"docker" "rm" "-f" "c67df2db8bf7645247fa74b79d8695144d1c1d969aaea80d958ddecb0f730b6d"`
[INFO] [stdout] c67df2db8bf7645247fa74b79d8695144d1c1d969aaea80d958ddecb0f730b6d