[INFO] fetching crate amethyst-rhusics 0.3.0...
[INFO] testing amethyst-rhusics-0.3.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate amethyst-rhusics 0.3.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate amethyst-rhusics 0.3.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate amethyst-rhusics 0.3.0
[INFO] finished tweaking crates.io crate amethyst-rhusics 0.3.0
[INFO] tweaked toml for crates.io crate amethyst-rhusics 0.3.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f40bf8676a349c34744ed3229bc539f711a0cbd4503a13f6005b5549596796ca
[INFO] running `Command { std: "docker" "start" "-a" "f40bf8676a349c34744ed3229bc539f711a0cbd4503a13f6005b5549596796ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f40bf8676a349c34744ed3229bc539f711a0cbd4503a13f6005b5549596796ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f40bf8676a349c34744ed3229bc539f711a0cbd4503a13f6005b5549596796ca", kill_on_drop: false }`
[INFO] [stdout] f40bf8676a349c34744ed3229bc539f711a0cbd4503a13f6005b5549596796ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ef3d8747b4be9541d9f17b2e8943e820ff01af48485547bbe924d7eba75ec381
[INFO] running `Command { std: "docker" "start" "-a" "ef3d8747b4be9541d9f17b2e8943e820ff01af48485547bbe924d7eba75ec381", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling nix v0.11.1
[INFO] [stderr]    Compiling crossbeam v0.3.2
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling wayland-sys v0.20.12
[INFO] [stderr]    Compiling wayland-scanner v0.20.12
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling wayland-commons v0.20.12
[INFO] [stderr]    Compiling wayland-client v0.20.12
[INFO] [stderr]    Compiling wayland-protocols v0.20.12
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling backtrace v0.3.55
[INFO] [stderr]    Compiling memmap v0.6.2
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling tiff v0.2.2
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling png v0.12.0
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling smithay-client-toolkit v0.3.0
[INFO] [stderr]    Compiling hibitset v0.5.4
[INFO] [stderr]    Compiling jpeg-decoder v0.1.20
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling image v0.20.1
[INFO] [stderr]    Compiling smallvec v0.6.13
[INFO] [stderr]    Compiling draw_state v0.8.0
[INFO] [stderr]    Compiling ron v0.4.2
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling shred v0.7.2
[INFO] [stderr]    Compiling gl_generator v0.9.0
[INFO] [stderr]    Compiling parking_lot v0.6.4
[INFO] [stderr]    Compiling crossbeam-channel v0.2.6
[INFO] [stderr]    Compiling winit v0.17.2
[INFO] [stderr]    Compiling gfx_core v0.8.3
[INFO] [stderr]    Compiling specs v0.12.3
[INFO] [stderr]    Compiling gfx_gl v0.5.0
[INFO] [stderr]    Compiling glutin v0.18.0
[INFO] [stderr]    Compiling crossbeam v0.4.1
[INFO] [stderr]    Compiling collision v0.18.0
[INFO] [stderr]    Compiling genmesh v0.6.2
[INFO] [stderr]    Compiling specs-hierarchy v0.2.1
[INFO] [stderr]    Compiling amethyst_core v0.4.0
[INFO] [stderr]    Compiling rhusics-transform v0.4.0
[INFO] [stderr]    Compiling rhusics-core v0.6.0
[INFO] [stderr]    Compiling amethyst_assets v0.5.0
[INFO] [stderr]    Compiling rhusics-ecs v0.6.0
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/amethyst_assets-0.5.0/src/prefab/mod.rs:363:22
[INFO] [stdout]     |
[INFO] [stdout] 363 |                 name.as_ref(),
[INFO] [stdout]     |                 -----^^^^^^--
[INFO] [stdout]     |                 |    |
[INFO] [stdout]     |                 |    cannot infer type for type parameter `T` declared on the trait `AsRef`
[INFO] [stdout]     |                 this method call resolves to `&T`
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `std::string::String: AsRef<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling gfx_device_gl v0.15.5
[INFO] [stderr]    Compiling gfx v0.17.1
[INFO] [stderr]    Compiling glsl-layout v0.1.1
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `amethyst_assets`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ef3d8747b4be9541d9f17b2e8943e820ff01af48485547bbe924d7eba75ec381", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef3d8747b4be9541d9f17b2e8943e820ff01af48485547bbe924d7eba75ec381", kill_on_drop: false }`
[INFO] [stdout] ef3d8747b4be9541d9f17b2e8943e820ff01af48485547bbe924d7eba75ec381