[INFO] updating cached repository ejmahler/tetris_clone
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ejmahler/tetris_clone
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ejmahler/tetris_clone" "work/ex/beta-1.37-6/sources/1.36.0/gh/ejmahler/tetris_clone"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/ejmahler/tetris_clone'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ejmahler/tetris_clone" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ejmahler/tetris_clone"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ejmahler/tetris_clone'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a0b81459479ba0e134d4b2a5ce5982afd2b73386
[INFO] sha for GitHub repo ejmahler/tetris_clone: a0b81459479ba0e134d4b2a5ce5982afd2b73386
[INFO] validating manifest of ejmahler/tetris_clone on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ejmahler/tetris_clone on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ejmahler/tetris_clone
[INFO] finished frobbing ejmahler/tetris_clone
[INFO] frobbed toml for ejmahler/tetris_clone written to work/ex/beta-1.37-6/sources/1.36.0/gh/ejmahler/tetris_clone/Cargo.toml
[INFO] started frobbing ejmahler/tetris_clone
[INFO] finished frobbing ejmahler/tetris_clone
[INFO] frobbed toml for ejmahler/tetris_clone written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ejmahler/tetris_clone/Cargo.toml
[INFO] crate ejmahler/tetris_clone already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ejmahler/tetris_clone against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ejmahler/tetris_clone:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] f1ef94ac2054ad38c7854a4cd5989b61f9608f2ca148a37d52b403e3525ccd20
[INFO] running `"docker" "start" "-a" "f1ef94ac2054ad38c7854a4cd5989b61f9608f2ca148a37d52b403e3525ccd20"`
[INFO] [stderr]    Compiling cgmath v0.16.0
[INFO] [stderr]    Compiling ndarray v0.11.0
[INFO] [stderr]    Compiling rand v0.4.1
[INFO] [stderr]    Compiling itertools v0.5.10
[INFO] [stderr]    Compiling itertools v0.7.5
[INFO] [stderr]    Compiling draw_state v0.7.1
[INFO] [stderr]    Compiling shared_library v0.1.8
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling tempfile v2.2.0
[INFO] [stderr]    Compiling rayon-core v1.3.0
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]    Compiling x11-dl v2.17.2
[INFO] [stderr]    Compiling target_build_utils v0.3.1
[INFO] [stderr]    Compiling fs2 v0.2.5
[INFO] [stderr]    Compiling gfx_gl v0.4.0
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling pistoncore-input v0.20.0
[INFO] [stderr]    Compiling memmap v0.4.0
[INFO] [stderr]    Compiling derivative v1.0.0
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling pistoncore-window v0.30.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.13
[INFO] [stderr]    Compiling pistoncore-event_loop v0.35.0
[INFO] [stderr]    Compiling piston v0.35.0
[INFO] [stderr]    Compiling image v0.18.0
[INFO] [stderr]    Compiling gfx_core v0.7.2
[INFO] [stderr]    Compiling libloading v0.3.4
[INFO] [stderr]    Compiling dlib v0.3.1
[INFO] [stderr]    Compiling wayland-sys v0.9.10
[INFO] [stderr]    Compiling wayland-client v0.9.10
[INFO] [stderr]    Compiling wayland-protocols v0.9.10
[INFO] [stderr]    Compiling wayland-kbd v0.9.1
[INFO] [stderr]    Compiling wayland-window v0.8.0
[INFO] [stderr]    Compiling winit v0.8.3
[INFO] [stderr]    Compiling glutin v0.10.1
[INFO] [stderr]    Compiling pistoncore-glutin_window v0.43.0
[INFO] [stderr]    Compiling gfx v0.16.3
[INFO] [stderr]    Compiling gfx_device_gl v0.14.6
[INFO] [stderr]    Compiling piston-gfx_texture v0.30.0
[INFO] [stderr]    Compiling piston2d-gfx_graphics v0.47.0
[INFO] [stderr]    Compiling piston_window v0.74.0
[INFO] [stderr]    Compiling tetris_clone v0.1.0 (/opt/crater/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(universal_impl_trait)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(conservative_impl_trait)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(nll)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `tetris_clone`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f1ef94ac2054ad38c7854a4cd5989b61f9608f2ca148a37d52b403e3525ccd20"`
[INFO] running `"docker" "rm" "-f" "f1ef94ac2054ad38c7854a4cd5989b61f9608f2ca148a37d52b403e3525ccd20"`
[INFO] [stdout] f1ef94ac2054ad38c7854a4cd5989b61f9608f2ca148a37d52b403e3525ccd20