[INFO] updating cached repository https://github.com/Enigmatrix/minesweeper-rust
[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] 79a2345405ec4fb1ea691f9f1d82447a5e7af228
[INFO] checking Enigmatrix/minesweeper-rust against beta-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEnigmatrix%2Fminesweeper-rust" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Enigmatrix/minesweeper-rust 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/Enigmatrix/minesweeper-rust
[INFO] finished tweaking git repo https://github.com/Enigmatrix/minesweeper-rust
[INFO] tweaked toml for git repo https://github.com/Enigmatrix/minesweeper-rust written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Enigmatrix/minesweeper-rust 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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 5cbe2bafb2fdcea077422f6a1cb55afc65ce61bb6e37566aecac284eb6db3b24
[INFO] running `"docker" "start" "-a" "5cbe2bafb2fdcea077422f6a1cb55afc65ce61bb6e37566aecac284eb6db3b24"`
[INFO] [stderr]    Compiling libc v0.2.34
[INFO] [stderr]    Compiling num-traits v0.1.41
[INFO] [stderr]    Compiling bitflags v1.0.1
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]    Compiling khronos_api v2.0.0
[INFO] [stderr]    Compiling rayon-core v1.3.0
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]     Checking either v1.4.0
[INFO] [stderr]     Checking adler32 v1.0.2
[INFO] [stderr]     Checking serde v1.0.24
[INFO] [stderr]     Checking linked-hash-map v0.5.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.8
[INFO] [stderr]     Checking num_cpus v1.7.0
[INFO] [stderr]     Checking rand v0.4.1
[INFO] [stderr]    Compiling phf_shared v0.7.21
[INFO] [stderr]     Checking shared_library v0.1.8
[INFO] [stderr]     Checking stb_truetype v0.2.1
[INFO] [stderr]     Checking arrayvec v0.4.6
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]     Checking inflate v0.3.3
[INFO] [stderr]     Checking deflate v0.7.17
[INFO] [stderr]    Compiling phf v0.7.21
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]    Compiling wayland-protocols v0.9.10
[INFO] [stderr]    Compiling serde_derive_internals v0.18.0
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking fs2 v0.2.5
[INFO] [stderr]    Compiling serde_json v0.9.10
[INFO] [stderr]    Compiling rand v0.3.18
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking rusttype v0.2.3
[INFO] [stderr]    Compiling x11-dl v2.17.2
[INFO] [stderr]     Checking memmap v0.4.0
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num-rational v0.1.40
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]    Compiling gl_generator v0.7.0
[INFO] [stderr]    Compiling gl_generator v0.6.1
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling serde_derive v1.0.24
[INFO] [stderr]     Checking piston2d-graphics v0.24.0
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]    Compiling target_build_utils v0.3.1
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]    Compiling gl v0.7.0
[INFO] [stderr]    Compiling glutin v0.10.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]     Checking pistoncore-input v0.20.0
[INFO] [stderr]     Checking pistoncore-window v0.30.0
[INFO] [stderr]    Compiling libloading v0.3.4
[INFO] [stderr]     Checking pistoncore-event_loop v0.35.0
[INFO] [stderr]     Checking piston v0.35.0
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.50.0
[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 wayland-kbd v0.9.1
[INFO] [stderr]     Checking wayland-window v0.8.0
[INFO] [stderr]     Checking winit v0.8.3
[INFO] [stderr]     Checking pistoncore-glutin_window v0.43.0
[INFO] [stderr]     Checking minesweeper-rust 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(slice_patterns)]
[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[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(slice_patterns)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `minesweeper-rust`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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 `minesweeper-rust`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5cbe2bafb2fdcea077422f6a1cb55afc65ce61bb6e37566aecac284eb6db3b24"`
[INFO] running `"docker" "rm" "-f" "5cbe2bafb2fdcea077422f6a1cb55afc65ce61bb6e37566aecac284eb6db3b24"`
[INFO] [stdout] 5cbe2bafb2fdcea077422f6a1cb55afc65ce61bb6e37566aecac284eb6db3b24