[INFO] updating cached repository PRDeltoid/chip8-emulator [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/PRDeltoid/chip8-emulator [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/PRDeltoid/chip8-emulator" "work/ex/beta-1.38-1/sources/1.37.0/gh/PRDeltoid/chip8-emulator"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/PRDeltoid/chip8-emulator'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/PRDeltoid/chip8-emulator" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/PRDeltoid/chip8-emulator"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/PRDeltoid/chip8-emulator'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 4177a941d107f0bacf6a5ad3edbbcfef71c7189b [INFO] sha for GitHub repo PRDeltoid/chip8-emulator: 4177a941d107f0bacf6a5ad3edbbcfef71c7189b [INFO] validating manifest of PRDeltoid/chip8-emulator on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of PRDeltoid/chip8-emulator on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing PRDeltoid/chip8-emulator [INFO] finished frobbing PRDeltoid/chip8-emulator [INFO] frobbed toml for PRDeltoid/chip8-emulator written to work/ex/beta-1.38-1/sources/1.37.0/gh/PRDeltoid/chip8-emulator/Cargo.toml [INFO] started frobbing PRDeltoid/chip8-emulator [INFO] finished frobbing PRDeltoid/chip8-emulator [INFO] frobbed toml for PRDeltoid/chip8-emulator written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/PRDeltoid/chip8-emulator/Cargo.toml [INFO] crate PRDeltoid/chip8-emulator already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing PRDeltoid/chip8-emulator against 1.37.0 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/PRDeltoid/chip8-emulator:/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" "+1.37.0" "build" "--frozen"` [INFO] [stdout] 70e46839a4c74a31a395df54777b17f20ac5d396de3aab0d8d1305609bd81694 [INFO] running `"docker" "start" "-a" "70e46839a4c74a31a395df54777b17f20ac5d396de3aab0d8d1305609bd81694"` [INFO] [stderr] Compiling cc v1.0.22 [INFO] [stderr] Compiling serde v1.0.75 [INFO] [stderr] Compiling log v0.4.4 [INFO] [stderr] Compiling x11-dl v2.18.3 [INFO] [stderr] Compiling stb_truetype v0.2.3 [INFO] [stderr] Compiling tempfile v3.0.3 [INFO] [stderr] Compiling quote v0.6.8 [INFO] [stderr] Compiling num-iter v0.1.37 [INFO] [stderr] Compiling num-rational v0.1.42 [INFO] [stderr] Compiling png v0.12.0 [INFO] [stderr] Compiling gl_generator v0.9.0 [INFO] [stderr] Compiling gfx_core v0.8.2 [INFO] [stderr] Compiling syn v0.14.9 [INFO] [stderr] Compiling rusttype v0.4.3 [INFO] [stderr] Compiling libloading v0.5.0 [INFO] [stderr] Compiling piston2d-graphics v0.26.0 [INFO] [stderr] Compiling gfx_gl v0.5.0 [INFO] [stderr] Compiling gl v0.10.0 [INFO] [stderr] Compiling glutin v0.14.0 [INFO] [stderr] Compiling dlib v0.4.1 [INFO] [stderr] Compiling wayland-sys v0.12.5 [INFO] [stderr] Compiling wayland-client v0.12.5 [INFO] [stderr] Compiling serde_derive v1.0.75 [INFO] [stderr] Compiling num-derive v0.2.2 [INFO] [stderr] Compiling wayland-protocols v0.12.5 [INFO] [stderr] Compiling wayland-kbd v0.13.1 [INFO] [stderr] Compiling image v0.19.0 [INFO] [stderr] Compiling wayland-window v0.13.3 [INFO] [stderr] Compiling winit v0.12.0 [INFO] [stderr] Compiling pistoncore-input v0.21.0 [INFO] [stderr] Compiling pistoncore-window v0.32.0 [INFO] [stderr] Compiling pistoncore-event_loop v0.37.0 [INFO] [stderr] Compiling pistoncore-glutin_window v0.47.0 [INFO] [stderr] Compiling gfx v0.17.1 [INFO] [stderr] Compiling gfx_device_gl v0.15.3 [INFO] [stderr] Compiling piston v0.37.0 [INFO] [stderr] Compiling piston-gfx_texture v0.32.0 [INFO] [stderr] Compiling piston2d-gfx_graphics v0.51.0 [INFO] [stderr] Compiling piston_window v0.80.0 [INFO] [stderr] Compiling chip8 v0.1.0 (/opt/crater/workdir) [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:17:1 [INFO] [stderr] | [INFO] [stderr] 17 | #![feature(duration_as_u128)] [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 `chip8`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "70e46839a4c74a31a395df54777b17f20ac5d396de3aab0d8d1305609bd81694"` [INFO] running `"docker" "rm" "-f" "70e46839a4c74a31a395df54777b17f20ac5d396de3aab0d8d1305609bd81694"` [INFO] [stdout] 70e46839a4c74a31a395df54777b17f20ac5d396de3aab0d8d1305609bd81694