[INFO] updating cached repository nryaskin/simulator
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nryaskin/simulator
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nryaskin/simulator" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/nryaskin/simulator"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/nryaskin/simulator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nryaskin/simulator" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/nryaskin/simulator"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/nryaskin/simulator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9b4bcc7c1aa8ee0b09452eeb6d6b029bef566993
[INFO] sha for GitHub repo nryaskin/simulator: 9b4bcc7c1aa8ee0b09452eeb6d6b029bef566993
[INFO] validating manifest of nryaskin/simulator on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of nryaskin/simulator on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing nryaskin/simulator
[INFO] finished frobbing nryaskin/simulator
[INFO] frobbed toml for nryaskin/simulator written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/nryaskin/simulator/Cargo.toml
[INFO] started frobbing nryaskin/simulator
[INFO] finished frobbing nryaskin/simulator
[INFO] frobbed toml for nryaskin/simulator written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/nryaskin/simulator/Cargo.toml
[INFO] crate nryaskin/simulator already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking nryaskin/simulator against try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-6/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/nryaskin/simulator:/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" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 723ab2c4c5abc387cb10beb731824c517004a8d8ae78c225b6e7d619cab3a4b3
[INFO] running `"docker" "start" "-a" "723ab2c4c5abc387cb10beb731824c517004a8d8ae78c225b6e7d619cab3a4b3"`
[INFO] [stderr]     Checking disassembler v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::result`
[INFO] [stderr]  --> src/chip8/cpu.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::result;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::rand::prelude::*`
[INFO] [stderr]  --> src/chip8/cpu.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use self::rand::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::result`
[INFO] [stderr]   --> src/chip8/mod.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::result;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::result`
[INFO] [stderr]  --> src/chip8/cpu.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::result;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::rand::prelude::*`
[INFO] [stderr]  --> src/chip8/cpu.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use self::rand::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::result`
[INFO] [stderr]   --> src/chip8/mod.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::result;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `memory`
[INFO] [stderr]    --> src/chip8/cpu.rs:193:26
[INFO] [stderr]     |
[INFO] [stderr] 193 |     fn disp_clear(&self, memory: & mut Memory) {
[INFO] [stderr]     |                          ^^^^^^ help: consider prefixing with an underscore: `_memory`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r_y`
[INFO] [stderr]    --> src/chip8/cpu.rs:292:48
[INFO] [stderr]     |
[INFO] [stderr] 292 |     fn bit_right_shift(& mut self, r_x: usize, r_y: usize) {
[INFO] [stderr]     |                                                ^^^ help: consider prefixing with an underscore: `_r_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r_y`
[INFO] [stderr]    --> src/chip8/cpu.rs:309:47
[INFO] [stderr]     |
[INFO] [stderr] 309 |     fn bit_left_shift(& mut self, r_x: usize, r_y: usize) {
[INFO] [stderr]     |                                               ^^^ help: consider prefixing with an underscore: `_r_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `memory`
[INFO] [stderr]    --> src/chip8/cpu.rs:193:26
[INFO] [stderr]     |
[INFO] [stderr] 193 |     fn disp_clear(&self, memory: & mut Memory) {
[INFO] [stderr]     |                          ^^^^^^ help: consider prefixing with an underscore: `_memory`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r_y`
[INFO] [stderr]    --> src/chip8/cpu.rs:292:48
[INFO] [stderr]     |
[INFO] [stderr] 292 |     fn bit_right_shift(& mut self, r_x: usize, r_y: usize) {
[INFO] [stderr]     |                                                ^^^ help: consider prefixing with an underscore: `_r_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r_y`
[INFO] [stderr]    --> src/chip8/cpu.rs:309:47
[INFO] [stderr]     |
[INFO] [stderr] 309 |     fn bit_left_shift(& mut self, r_x: usize, r_y: usize) {
[INFO] [stderr]     |                                               ^^^ help: consider prefixing with an underscore: `_r_y`
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CHIP8_V0_REGISTER`
[INFO] [stderr]   --> src/chip8/cpu.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | const CHIP8_V0_REGISTER:        usize   = 0x0;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mem_size`
[INFO] [stderr]   --> src/chip8/memory.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn mem_size(& self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Keypad`
[INFO] [stderr]  --> src/chip8/keypad.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct Keypad {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_mem`
[INFO] [stderr]   --> src/chip8/mod.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn get_mem(&self, addr: u16) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |         chip.emulate_cycle();
[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: constant item is never used: `CHIP8_V0_REGISTER`
[INFO] [stderr]   --> src/chip8/cpu.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | const CHIP8_V0_REGISTER:        usize   = 0x0;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mem_size`
[INFO] [stderr]   --> src/chip8/memory.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn mem_size(& self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Keypad`
[INFO] [stderr]  --> src/chip8/keypad.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct Keypad {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_mem`
[INFO] [stderr]   --> src/chip8/mod.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn get_mem(&self, addr: u16) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |         chip.emulate_cycle();
[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 0.89s
[INFO] running `"docker" "inspect" "723ab2c4c5abc387cb10beb731824c517004a8d8ae78c225b6e7d619cab3a4b3"`
[INFO] running `"docker" "rm" "-f" "723ab2c4c5abc387cb10beb731824c517004a8d8ae78c225b6e7d619cab3a4b3"`
[INFO] [stdout] 723ab2c4c5abc387cb10beb731824c517004a8d8ae78c225b6e7d619cab3a4b3