[INFO] updating cached repository https://github.com/McGittyHub/chess-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0d9105e6a690eb4e96a3880f9424708fc7f2aec7
[INFO] checking McGittyHub/chess-rs against beta-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMcGittyHub%2Fchess-rs" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/McGittyHub/chess-rs on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/McGittyHub/chess-rs
[INFO] finished tweaking git repo https://github.com/McGittyHub/chess-rs
[INFO] tweaked toml for git repo https://github.com/McGittyHub/chess-rs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/McGittyHub/chess-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=allow" "-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" "+beta-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2a7a2f103add81e30c7d0b397692a4a7f4b86bf1fa8d48609fe769ebf6ba596a
[INFO] running `"docker" "start" "-a" "2a7a2f103add81e30c7d0b397692a4a7f4b86bf1fa8d48609fe769ebf6ba596a"`
[INFO] [stderr]     Checking lazy_static v0.2.10
[INFO] [stderr]    Compiling inflections v1.1.1
[INFO] [stderr]     Checking mint v0.4.2
[INFO] [stderr]     Checking mint v0.2.0
[INFO] [stderr]     Checking linked-hash-map v0.5.0
[INFO] [stderr]     Checking spin v0.4.6
[INFO] [stderr]     Checking smallvec v0.5.0
[INFO] [stderr]     Checking ogg v0.4.1
[INFO] [stderr]     Checking itertools v0.6.5
[INFO] [stderr]     Checking serde_json v1.0.6
[INFO] [stderr]     Checking arrayvec v0.4.6
[INFO] [stderr]     Checking cgmath v0.14.1
[INFO] [stderr]     Checking froggy v0.4.4
[INFO] [stderr]     Checking shared_library v0.1.7
[INFO] [stderr]     Checking rayon-core v1.3.0
[INFO] [stderr]     Checking ordered-float v0.5.0
[INFO] [stderr]     Checking lewton v0.5.2
[INFO] [stderr]     Checking png v0.7.0
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]     Checking x11-dl v2.16.0
[INFO] [stderr]     Checking alsa-sys v0.1.1
[INFO] [stderr]     Checking gfx_core v0.7.2
[INFO] [stderr]     Checking cgmath v0.15.0
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking rusttype v0.2.3
[INFO] [stderr]    Compiling gltf-derive v0.9.3
[INFO] [stderr]    Compiling flate2 v0.2.20
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]     Checking rayon v0.9.0
[INFO] [stderr]     Checking cpal v0.4.6
[INFO] [stderr]     Checking includedir v0.2.2
[INFO] [stderr]     Checking gltf-json v0.9.3
[INFO] [stderr]    Compiling includedir_codegen v0.2.2
[INFO] [stderr]     Checking genmesh v0.5.0
[INFO] [stderr]     Checking rodio v0.5.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking obj v0.6.0
[INFO] [stderr]     Checking libloading v0.3.4
[INFO] [stderr]    Compiling three v0.2.0 (https://github.com/three-rs/three.git#afddb1d3)
[INFO] [stderr]     Checking image v0.13.0
[INFO] [stderr]     Checking dlib v0.3.1
[INFO] [stderr]     Checking wayland-sys v0.9.10
[INFO] [stderr]     Checking wayland-client v0.9.10
[INFO] [stderr]     Checking gltf v0.9.3
[INFO] [stderr]     Checking wayland-protocols v0.9.10
[INFO] [stderr]     Checking wayland-kbd v0.9.1
[INFO] [stderr]     Checking gltf-utils v0.9.3
[INFO] [stderr]     Checking wayland-window v0.7.0
[INFO] [stderr]     Checking gltf-importer v0.9.3
[INFO] [stderr]     Checking winit v0.7.6
[INFO] [stderr]     Checking glutin v0.9.2
[INFO] [stderr]     Checking gfx_device_gl v0.14.4
[INFO] [stderr]     Checking gfx v0.16.1
[INFO] [stderr]     Checking gfx_window_glutin v0.17.0
[INFO] [stderr]     Checking gfx_glyph v0.3.3
[INFO] [stderr]     Checking chess-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(conservative_impl_trait)]
[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 `chess-rs`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(conservative_impl_trait)]
[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 `chess-rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2a7a2f103add81e30c7d0b397692a4a7f4b86bf1fa8d48609fe769ebf6ba596a"`
[INFO] running `"docker" "rm" "-f" "2a7a2f103add81e30c7d0b397692a4a7f4b86bf1fa8d48609fe769ebf6ba596a"`
[INFO] [stdout] 2a7a2f103add81e30c7d0b397692a4a7f4b86bf1fa8d48609fe769ebf6ba596a