[INFO] crate amethyst_rendy 0.2.0 is already in cache
[INFO] testing amethyst_rendy-0.2.0 against 1.38.0 for beta-1.39-1
[INFO] extracting crate amethyst_rendy 0.2.0 into work/builds/worker-7/source
[INFO] validating manifest of crates.io crate amethyst_rendy 0.2.0 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate amethyst_rendy 0.2.0
[INFO] finished tweaking crates.io crate amethyst_rendy 0.2.0
[INFO] tweaked toml for crates.io crate amethyst_rendy 0.2.0 written to work/builds/worker-7/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 003b20d9b50d0187c0430624cf7d14ecf718bc91d9497f87d5f1bb974cc5e13a
[INFO] running `"docker" "start" "-a" "003b20d9b50d0187c0430624cf7d14ecf718bc91d9497f87d5f1bb974cc5e13a"`
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling nonzero_signed v1.0.3
[INFO] [stderr]    Compiling relevant v0.4.2
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]    Compiling inventory-impl v0.1.4
[INFO] [stderr]    Compiling ghost v0.1.1
[INFO] [stderr]    Compiling ctor v0.1.12
[INFO] [stderr]    Compiling amethyst_error v0.2.0
[INFO] [stderr]    Compiling glsl-layout-derive v0.3.2
[INFO] [stderr]    Compiling smallvec v0.6.10
[INFO] [stderr]    Compiling serde_bytes v0.11.2
[INFO] [stderr]    Compiling wavefront_obj v6.0.0
[INFO] [stderr]    Compiling ron v0.5.1
[INFO] [stderr]    Compiling erased-serde v0.3.9
[INFO] [stderr]    Compiling genmesh v0.6.2
[INFO] [stderr]    Compiling gfx-hal v0.2.1
[INFO] [stderr]    Compiling thread_profiler v0.3.0
[INFO] [stderr]    Compiling quickcheck v0.8.5
[INFO] [stderr]    Compiling rayon v1.2.0
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling palette v0.4.1
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling amethyst_config v0.11.0
[INFO] [stderr]    Compiling parking_lot v0.6.4
[INFO] [stderr]    Compiling alga v0.9.1
[INFO] [stderr]    Compiling inventory v0.1.4
[INFO] [stderr]    Compiling alga_derive v0.9.1
[INFO] [stderr]    Compiling glsl-layout v0.3.2
[INFO] [stderr]    Compiling crossbeam-channel v0.2.6
[INFO] [stderr]    Compiling hibitset v0.5.4
[INFO] [stderr]    Compiling shred v0.7.2
[INFO] [stderr]    Compiling jpeg-decoder v0.1.16
[INFO] [stderr]    Compiling crossbeam v0.4.1
[INFO] [stderr]    Compiling nalgebra v0.18.1
[INFO] [stderr]    Compiling image v0.21.3
[INFO] [stderr]    Compiling specs v0.14.3
[INFO] [stderr]    Compiling specs-hierarchy v0.3.1
[INFO] [stderr]    Compiling rendy-util v0.3.1
[INFO] [stderr]    Compiling rendy-memory v0.3.0
[INFO] [stderr]    Compiling rendy-descriptor v0.3.0
[INFO] [stderr]    Compiling rendy-chain v0.3.1
[INFO] [stderr]    Compiling rendy-command v0.3.0
[INFO] [stderr]    Compiling rendy-resource v0.3.0
[INFO] [stderr]    Compiling rendy-wsi v0.3.0
[INFO] [stderr]    Compiling rendy-factory v0.3.1
[INFO] [stderr]    Compiling amethyst_core v0.7.0
[INFO] [stderr]    Compiling rendy-frame v0.3.0
[INFO] [stderr]    Compiling rendy-shader v0.3.0
[INFO] [stderr]    Compiling rendy-mesh v0.3.1
[INFO] [stderr]    Compiling rendy-texture v0.3.0
[INFO] [stderr]    Compiling rendy-graph v0.3.2
[INFO] [stderr]    Compiling amethyst_assets v0.8.0
[INFO] [stderr]    Compiling rendy v0.3.2
[INFO] [stderr]    Compiling amethyst_rendy v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: You must specify at least one graphical backend feature: "metal", "vulkan", "empty"
[INFO] [stderr] "See the wiki article https://github.com/amethyst/amethyst/wiki/GraphicalBackendError for more details."
[INFO] [stderr]    --> src/types.rs:112:1
[INFO] [stderr]     |
[INFO] [stderr] 112 | / impl_backends!(
[INFO] [stderr] 113 | |     // DirectX 12 is currently disabled because of incomplete gfx-hal support for it.
[INFO] [stderr] 114 | |     // It will be re-enabled when it actually works.
[INFO] [stderr] 115 | |     // Dx12, "dx12", rendy::dx12::Backend; 
[INFO] [stderr] ...   |
[INFO] [stderr] 118 | |     Empty, "empty", rendy::empty::Backend;
[INFO] [stderr] 119 | | );
[INFO] [stderr]     | |__^ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `amethyst_rendy`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "003b20d9b50d0187c0430624cf7d14ecf718bc91d9497f87d5f1bb974cc5e13a"`
[INFO] running `"docker" "rm" "-f" "003b20d9b50d0187c0430624cf7d14ecf718bc91d9497f87d5f1bb974cc5e13a"`
[INFO] [stdout] 003b20d9b50d0187c0430624cf7d14ecf718bc91d9497f87d5f1bb974cc5e13a