[INFO] updating cached repository teja635/chip8 [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/teja635/chip8 [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/teja635/chip8" "work/ex/beta-1.38-1/sources/1.37.0/gh/teja635/chip8"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/teja635/chip8'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/teja635/chip8" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/teja635/chip8"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/teja635/chip8'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] cde7ba86cb389c21b13d42b37ccfe4c7f9e3e762 [INFO] sha for GitHub repo teja635/chip8: cde7ba86cb389c21b13d42b37ccfe4c7f9e3e762 [INFO] validating manifest of teja635/chip8 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 teja635/chip8 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 teja635/chip8 [INFO] finished frobbing teja635/chip8 [INFO] frobbed toml for teja635/chip8 written to work/ex/beta-1.38-1/sources/1.37.0/gh/teja635/chip8/Cargo.toml [INFO] started frobbing teja635/chip8 [INFO] finished frobbing teja635/chip8 [INFO] frobbed toml for teja635/chip8 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/teja635/chip8/Cargo.toml [INFO] crate teja635/chip8 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing teja635/chip8 against beta-2019-08-13 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/teja635/chip8:/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-2019-08-13" "build" "--frozen"` [INFO] [stdout] 1f1591a526aa8868ac6255e694948a18830eea6691de152f59d9b3fb53d66775 [INFO] running `"docker" "start" "-a" "1f1591a526aa8868ac6255e694948a18830eea6691de152f59d9b3fb53d66775"` [INFO] [stderr] Compiling sdl2-sys v0.32.5 [INFO] [stderr] Compiling ncurses v5.98.0 [INFO] [stderr] Compiling sdl2 v0.32.1 [INFO] [stderr] Compiling chip8 v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused variable: `keymod` [INFO] [stderr] --> src/lib.rs:73:62 [INFO] [stderr] | [INFO] [stderr] 73 | Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^ help: try ignoring the field: `keymod: _` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `repeat` [INFO] [stderr] --> src/lib.rs:73:70 [INFO] [stderr] | [INFO] [stderr] 73 | Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^ help: try ignoring the field: `repeat: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `scancode` [INFO] [stderr] --> src/lib.rs:73:52 [INFO] [stderr] | [INFO] [stderr] 73 | Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^^^ help: try ignoring the field: `scancode: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `timestamp` [INFO] [stderr] --> src/lib.rs:73:21 [INFO] [stderr] | [INFO] [stderr] 73 | Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^^^^ help: try ignoring the field: `timestamp: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `window_id` [INFO] [stderr] --> src/lib.rs:73:32 [INFO] [stderr] | [INFO] [stderr] 73 | Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^^^^ help: try ignoring the field: `window_id: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `keymod` [INFO] [stderr] --> src/lib.rs:76:60 [INFO] [stderr] | [INFO] [stderr] 76 | Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^ help: try ignoring the field: `keymod: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `repeat` [INFO] [stderr] --> src/lib.rs:76:68 [INFO] [stderr] | [INFO] [stderr] 76 | Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^ help: try ignoring the field: `repeat: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `scancode` [INFO] [stderr] --> src/lib.rs:76:50 [INFO] [stderr] | [INFO] [stderr] 76 | Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^^^ help: try ignoring the field: `scancode: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `timestamp` [INFO] [stderr] --> src/lib.rs:76:19 [INFO] [stderr] | [INFO] [stderr] 76 | Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^^^^ help: try ignoring the field: `timestamp: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `window_id` [INFO] [stderr] --> src/lib.rs:76:30 [INFO] [stderr] | [INFO] [stderr] 76 | Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^^^^ help: try ignoring the field: `window_id: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `output_binary` [INFO] [stderr] --> src/assembler.rs:5:37 [INFO] [stderr] | [INFO] [stderr] 5 | pub fn assemble(program_file: &str, output_binary: &str) { [INFO] [stderr] | ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_output_binary` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/cpu.rs:113:32 [INFO] [stderr] | [INFO] [stderr] 113 | pub fn clock_cycle(&mut self, mut disp: &mut display::GFX, mut keys: &mut keypad::Keypad) -> bool{ [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/cpu.rs:113:61 [INFO] [stderr] | [INFO] [stderr] 113 | pub fn clock_cycle(&mut self, mut disp: &mut display::GFX, mut keys: &mut keypad::Keypad) -> bool{ [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: method is never used: `dump_gfx_mem` [INFO] [stderr] --> src/display.rs:14:2 [INFO] [stderr] | [INFO] [stderr] 14 | pub fn dump_gfx_mem(&self) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `gfx_memory` [INFO] [stderr] --> src/display.rs:31:2 [INFO] [stderr] | [INFO] [stderr] 31 | pub fn gfx_memory(&self) -> [u64; 32] { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `st` [INFO] [stderr] --> src/cpu.rs:19:2 [INFO] [stderr] | [INFO] [stderr] 19 | st: u8, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `dump_memory` [INFO] [stderr] --> src/cpu.rs:79:2 [INFO] [stderr] | [INFO] [stderr] 79 | pub fn dump_memory(&self, start_idx: usize, end_idx: usize) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `dump_registers` [INFO] [stderr] --> src/cpu.rs:107:2 [INFO] [stderr] | [INFO] [stderr] 107 | pub fn dump_registers(&self) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `video_ctx` [INFO] [stderr] --> src/lib.rs:16:2 [INFO] [stderr] | [INFO] [stderr] 16 | video_ctx: sdl2::VideoSubsystem, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `timer` [INFO] [stderr] --> src/lib.rs:17:2 [INFO] [stderr] | [INFO] [stderr] 17 | timer: sdl2::TimerSubsystem, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:61:5 [INFO] [stderr] | [INFO] [stderr] 61 | self.canvas.fill_rect(Rect::new(20*x as i32, 20*y as i32, 20, 20)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: structure field `V` should have a snake case name [INFO] [stderr] --> src/cpu.rs:12:2 [INFO] [stderr] | [INFO] [stderr] 12 | V: [u8; 16], [INFO] [stderr] | ^ help: convert the identifier to snake case: `v` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: structure field `I` should have a snake case name [INFO] [stderr] --> src/cpu.rs:13:2 [INFO] [stderr] | [INFO] [stderr] 13 | I: u16, [INFO] [stderr] | ^ help: convert the identifier to snake case: `i` [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/cpu.rs:25:2 [INFO] [stderr] | [INFO] [stderr] 25 | fd.read(&mut memory[0x200..]); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 13.64s [INFO] running `"docker" "inspect" "1f1591a526aa8868ac6255e694948a18830eea6691de152f59d9b3fb53d66775"` [INFO] running `"docker" "rm" "-f" "1f1591a526aa8868ac6255e694948a18830eea6691de152f59d9b3fb53d66775"` [INFO] [stdout] 1f1591a526aa8868ac6255e694948a18830eea6691de152f59d9b3fb53d66775 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/teja635/chip8:/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-2019-08-13" "test" "--frozen" "--no-run"` [INFO] [stdout] e8f1598679426d910d6b01e1594db922fd9af38978d5b0f908af28a4b5795571 [INFO] running `"docker" "start" "-a" "e8f1598679426d910d6b01e1594db922fd9af38978d5b0f908af28a4b5795571"` [INFO] [stderr] Compiling chip8 v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused variable: `keymod` [INFO] [stderr] --> src/lib.rs:73:62 [INFO] [stderr] | [INFO] [stderr] 73 | Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^ help: try ignoring the field: `keymod: _` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `repeat` [INFO] [stderr] --> src/lib.rs:73:70 [INFO] [stderr] | [INFO] [stderr] 73 | Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^ help: try ignoring the field: `repeat: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `scancode` [INFO] [stderr] --> src/lib.rs:73:52 [INFO] [stderr] | [INFO] [stderr] 73 | Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^^^ help: try ignoring the field: `scancode: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `timestamp` [INFO] [stderr] --> src/lib.rs:73:21 [INFO] [stderr] | [INFO] [stderr] 73 | Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^^^^ help: try ignoring the field: `timestamp: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `window_id` [INFO] [stderr] --> src/lib.rs:73:32 [INFO] [stderr] | [INFO] [stderr] 73 | Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^^^^ help: try ignoring the field: `window_id: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `keymod` [INFO] [stderr] --> src/lib.rs:76:60 [INFO] [stderr] | [INFO] [stderr] 76 | Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^ help: try ignoring the field: `keymod: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `repeat` [INFO] [stderr] --> src/lib.rs:76:68 [INFO] [stderr] | [INFO] [stderr] 76 | Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^ help: try ignoring the field: `repeat: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `scancode` [INFO] [stderr] --> src/lib.rs:76:50 [INFO] [stderr] | [INFO] [stderr] 76 | Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^^^ help: try ignoring the field: `scancode: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `timestamp` [INFO] [stderr] --> src/lib.rs:76:19 [INFO] [stderr] | [INFO] [stderr] 76 | Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^^^^ help: try ignoring the field: `timestamp: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `window_id` [INFO] [stderr] --> src/lib.rs:76:30 [INFO] [stderr] | [INFO] [stderr] 76 | Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => { [INFO] [stderr] | ^^^^^^^^^ help: try ignoring the field: `window_id: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `output_binary` [INFO] [stderr] --> src/assembler.rs:5:37 [INFO] [stderr] | [INFO] [stderr] 5 | pub fn assemble(program_file: &str, output_binary: &str) { [INFO] [stderr] | ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_output_binary` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/cpu.rs:113:32 [INFO] [stderr] | [INFO] [stderr] 113 | pub fn clock_cycle(&mut self, mut disp: &mut display::GFX, mut keys: &mut keypad::Keypad) -> bool{ [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/cpu.rs:113:61 [INFO] [stderr] | [INFO] [stderr] 113 | pub fn clock_cycle(&mut self, mut disp: &mut display::GFX, mut keys: &mut keypad::Keypad) -> bool{ [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: method is never used: `dump_gfx_mem` [INFO] [stderr] --> src/display.rs:14:2 [INFO] [stderr] | [INFO] [stderr] 14 | pub fn dump_gfx_mem(&self) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `gfx_memory` [INFO] [stderr] --> src/display.rs:31:2 [INFO] [stderr] | [INFO] [stderr] 31 | pub fn gfx_memory(&self) -> [u64; 32] { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `st` [INFO] [stderr] --> src/cpu.rs:19:2 [INFO] [stderr] | [INFO] [stderr] 19 | st: u8, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `dump_memory` [INFO] [stderr] --> src/cpu.rs:79:2 [INFO] [stderr] | [INFO] [stderr] 79 | pub fn dump_memory(&self, start_idx: usize, end_idx: usize) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `dump_registers` [INFO] [stderr] --> src/cpu.rs:107:2 [INFO] [stderr] | [INFO] [stderr] 107 | pub fn dump_registers(&self) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `video_ctx` [INFO] [stderr] --> src/lib.rs:16:2 [INFO] [stderr] | [INFO] [stderr] 16 | video_ctx: sdl2::VideoSubsystem, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `timer` [INFO] [stderr] --> src/lib.rs:17:2 [INFO] [stderr] | [INFO] [stderr] 17 | timer: sdl2::TimerSubsystem, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:61:5 [INFO] [stderr] | [INFO] [stderr] 61 | self.canvas.fill_rect(Rect::new(20*x as i32, 20*y as i32, 20, 20)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: structure field `V` should have a snake case name [INFO] [stderr] --> src/cpu.rs:12:2 [INFO] [stderr] | [INFO] [stderr] 12 | V: [u8; 16], [INFO] [stderr] | ^ help: convert the identifier to snake case: `v` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: structure field `I` should have a snake case name [INFO] [stderr] --> src/cpu.rs:13:2 [INFO] [stderr] | [INFO] [stderr] 13 | I: u16, [INFO] [stderr] | ^ help: convert the identifier to snake case: `i` [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/cpu.rs:25:2 [INFO] [stderr] | [INFO] [stderr] 25 | fd.read(&mut memory[0x200..]); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.36s [INFO] running `"docker" "inspect" "e8f1598679426d910d6b01e1594db922fd9af38978d5b0f908af28a4b5795571"` [INFO] running `"docker" "rm" "-f" "e8f1598679426d910d6b01e1594db922fd9af38978d5b0f908af28a4b5795571"` [INFO] [stdout] e8f1598679426d910d6b01e1594db922fd9af38978d5b0f908af28a4b5795571 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/teja635/chip8:/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-2019-08-13" "test" "--frozen"` [INFO] [stdout] 29f27f8c23c8396e3e6941a9cf8b76e5ae8f3f191909db0223bd735df91642d3 [INFO] running `"docker" "start" "-a" "29f27f8c23c8396e3e6941a9cf8b76e5ae8f3f191909db0223bd735df91642d3"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.05s [INFO] [stderr] Running /opt/crater/target/debug/deps/chip8-69554bdecf5cbfa3 [INFO] [stdout] [INFO] [stderr] Running /opt/crater/target/debug/deps/chip8-22c74e526e1767f7 [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Doc-tests chip8 [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "29f27f8c23c8396e3e6941a9cf8b76e5ae8f3f191909db0223bd735df91642d3"` [INFO] running `"docker" "rm" "-f" "29f27f8c23c8396e3e6941a9cf8b76e5ae8f3f191909db0223bd735df91642d3"` [INFO] [stdout] 29f27f8c23c8396e3e6941a9cf8b76e5ae8f3f191909db0223bd735df91642d3