[INFO] updating cached repository ginryuoku/rust-chip8
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ginryuoku/rust-chip8
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ginryuoku/rust-chip8" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/ginryuoku/rust-chip8"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/ginryuoku/rust-chip8'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ginryuoku/rust-chip8" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/ginryuoku/rust-chip8"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/ginryuoku/rust-chip8'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2fac3a45b729c9cfb9870684be30392669c539b6
[INFO] sha for GitHub repo ginryuoku/rust-chip8: 2fac3a45b729c9cfb9870684be30392669c539b6
[INFO] validating manifest of ginryuoku/rust-chip8 on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ginryuoku/rust-chip8 on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ginryuoku/rust-chip8
[INFO] finished frobbing ginryuoku/rust-chip8
[INFO] frobbed toml for ginryuoku/rust-chip8 written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/ginryuoku/rust-chip8/Cargo.toml
[INFO] started frobbing ginryuoku/rust-chip8
[INFO] finished frobbing ginryuoku/rust-chip8
[INFO] frobbed toml for ginryuoku/rust-chip8 written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/ginryuoku/rust-chip8/Cargo.toml
[INFO] crate ginryuoku/rust-chip8 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ginryuoku/rust-chip8 against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-2/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/ginryuoku/rust-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=forbid" "-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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4fc0011a5907c3d578e1d254812fb338e0e63c4d42c00d65bab4fdadd487bab2
[INFO] running `"docker" "start" "-a" "4fc0011a5907c3d578e1d254812fb338e0e63c4d42c00d65bab4fdadd487bab2"`
[INFO] [stderr]     Checking rust-chip8 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/ram.rs:46:47
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn read_byte(&mut self, address: u16, value: u8) -> u8 {
[INFO] [stderr]    |                                               ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ram`
[INFO] [stderr]   --> src/cpu.rs:20:39
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn run_instruction(&mut self, ram: &mut Ram) {
[INFO] [stderr]    |                                       ^^^ help: consider prefixing with an underscore: `_ram`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_byte`
[INFO] [stderr]   --> src/ram.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn read_byte(&mut self, address: u16, value: u8) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `vx`
[INFO] [stderr]  --> src/cpu.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     vx: [u8; 16],
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `pc`
[INFO] [stderr]  --> src/cpu.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pc: u16,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `i`
[INFO] [stderr]  --> src/cpu.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     i: u16
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     file.read_to_end(&mut data);
[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: unused variable: `value`
[INFO] [stderr]   --> src/ram.rs:46:47
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn read_byte(&mut self, address: u16, value: u8) -> u8 {
[INFO] [stderr]    |                                               ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ram`
[INFO] [stderr]   --> src/cpu.rs:20:39
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn run_instruction(&mut self, ram: &mut Ram) {
[INFO] [stderr]    |                                       ^^^ help: consider prefixing with an underscore: `_ram`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_byte`
[INFO] [stderr]   --> src/ram.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn read_byte(&mut self, address: u16, value: u8) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `vx`
[INFO] [stderr]  --> src/cpu.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     vx: [u8; 16],
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `pc`
[INFO] [stderr]  --> src/cpu.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pc: u16,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `i`
[INFO] [stderr]  --> src/cpu.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     i: u16
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     file.read_to_end(&mut data);
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `"docker" "inspect" "4fc0011a5907c3d578e1d254812fb338e0e63c4d42c00d65bab4fdadd487bab2"`
[INFO] running `"docker" "rm" "-f" "4fc0011a5907c3d578e1d254812fb338e0e63c4d42c00d65bab4fdadd487bab2"`
[INFO] [stdout] 4fc0011a5907c3d578e1d254812fb338e0e63c4d42c00d65bab4fdadd487bab2