[INFO] cloning repository https://github.com/QualityHammer/yaci
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/QualityHammer/yaci" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQualityHammer%2Fyaci", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQualityHammer%2Fyaci'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 59a8a0d2678e6f65245ddd74e9688a561265e45c
[INFO] testing QualityHammer/yaci against beta-2020-10-09 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQualityHammer%2Fyaci" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/QualityHammer/yaci on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/QualityHammer/yaci
[INFO] finished tweaking git repo https://github.com/QualityHammer/yaci
[INFO] tweaked toml for git repo https://github.com/QualityHammer/yaci written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/QualityHammer/yaci already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7824ab35bcb8380ad2106722b39deaf9711600a1a9bd3f9721efa069a2d67560
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7824ab35bcb8380ad2106722b39deaf9711600a1a9bd3f9721efa069a2d67560", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7824ab35bcb8380ad2106722b39deaf9711600a1a9bd3f9721efa069a2d67560", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7824ab35bcb8380ad2106722b39deaf9711600a1a9bd3f9721efa069a2d67560", kill_on_drop: false }`
[INFO] [stdout] 7824ab35bcb8380ad2106722b39deaf9711600a1a9bd3f9721efa069a2d67560
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38bed85b6f6610f4fac34409716df5f13bb99a0018f7ea256c9f1f5a364b41c8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "38bed85b6f6610f4fac34409716df5f13bb99a0018f7ea256c9f1f5a364b41c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `digit_8 as d8`
[INFO] [stdout]   --> src/instruction_set.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     use digit_8 as d8;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `digit_e as de`
[INFO] [stdout]   --> src/instruction_set.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     use digit_e as de;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `digit_f as df`
[INFO] [stdout]   --> src/instruction_set.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     use digit_f as df;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/instruction_set.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 (value >> (4 * lsh_place))
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:177:19
[INFO] [stdout]     |
[INFO] [stdout] 177 |         pub fn _0(chip: Chip8InterpreterRef, address: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `address`
[INFO] [stdout]    --> src/instruction_set.rs:177:46
[INFO] [stdout]     |
[INFO] [stdout] 177 |         pub fn _0(chip: Chip8InterpreterRef, address: u16) -> Option<()> {
[INFO] [stdout]     |                                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:182:20
[INFO] [stdout]     |
[INFO] [stdout] 182 |         pub fn _e0(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                    ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:225:19
[INFO] [stdout]     |
[INFO] [stdout] 225 |         pub fn _3(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:229:19
[INFO] [stdout]     |
[INFO] [stdout] 229 |         pub fn _4(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:233:19
[INFO] [stdout]     |
[INFO] [stdout] 233 |         pub fn _5(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:237:19
[INFO] [stdout]     |
[INFO] [stdout] 237 |         pub fn _6(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:241:19
[INFO] [stdout]     |
[INFO] [stdout] 241 |         pub fn _7(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:245:19
[INFO] [stdout]     |
[INFO] [stdout] 245 |         pub fn _E(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/instruction_set.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |             let mut first_digit = HashMap::with_capacity(FIRST_DIGIT_OPCODE_COUNT);
[INFO] [stdout]    |                 ----^^^^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/instruction_set.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |             let mut digit_8 = HashMap::with_capacity(DIGIT_8_OPCODE_COUNT);
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/instruction_set.rs:61:17
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let mut digit_e = HashMap::with_capacity(DIGIT_E_OPCODE_COUNT);
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/instruction_set.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |             let mut digit_f = HashMap::with_capacity(DIGIT_F_OPCODE_COUNT);
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Instruction`
[INFO] [stdout]  --> src/instruction_set.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     type Instruction = fn(Chip8InterpreterRef, u16) -> Option<()>;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FIRST_DIGIT_OPCODE_COUNT`
[INFO] [stdout]  --> src/instruction_set.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     const FIRST_DIGIT_OPCODE_COUNT: usize = 12;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_0_OPCODE_COUNT`
[INFO] [stdout]  --> src/instruction_set.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     const DIGIT_0_OPCODE_COUNT: usize = 3;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_8_OPCODE_COUNT`
[INFO] [stdout]  --> src/instruction_set.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     const DIGIT_8_OPCODE_COUNT: usize = 9;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_E_OPCODE_COUNT`
[INFO] [stdout]  --> src/instruction_set.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     const DIGIT_E_OPCODE_COUNT: usize = 2;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_F_OPCODE_COUNT`
[INFO] [stdout]   --> src/instruction_set.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     const DIGIT_F_OPCODE_COUNT: usize = 9;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FIRST_DIGIT_OPCODES`
[INFO] [stdout]   --> src/instruction_set.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     const FIRST_DIGIT_OPCODES: [u16; 7] = [0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7];
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FIRST_DIGIT_INSTRUCTIONS`
[INFO] [stdout]   --> src/instruction_set.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     const FIRST_DIGIT_INSTRUCTIONS: [Instruction; 7] =
[INFO] [stdout] 16 | |         [d::_1, d::_2, d::_3, d::_4, d::_5, d::_6, d::_7];
[INFO] [stdout]    | |__________________________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_0_OPCODES`
[INFO] [stdout]   --> src/instruction_set.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     const DIGIT_0_OPCODES: [u16; DIGIT_0_OPCODE_COUNT] = [0x0, 0xE0, 0xEE];
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_0_INSTRUCTIONS`
[INFO] [stdout]   --> src/instruction_set.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     const DIGIT_0_INSTRUCTIONS: [Instruction; DIGIT_0_OPCODE_COUNT] = [d0::_0, d0::_e0, d0::_ee];
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Chip8InstructionSet`
[INFO] [stdout]   --> src/instruction_set.rs:40:16
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub struct Chip8InstructionSet {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/instruction_set.rs:49:16
[INFO] [stdout]    |
[INFO] [stdout] 49 |         pub fn new() -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lsh`
[INFO] [stdout]   --> src/instruction_set.rs:76:16
[INFO] [stdout]    |
[INFO] [stdout] 76 |         pub fn lsh(value: u16, lsh_place: u16) -> u16 {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `opcode_lsh`
[INFO] [stdout]   --> src/instruction_set.rs:82:16
[INFO] [stdout]    |
[INFO] [stdout] 82 |         pub fn opcode_lsh(value: u16, lsh_place: u16) -> u16 {
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `l2sh`
[INFO] [stdout]   --> src/instruction_set.rs:91:16
[INFO] [stdout]    |
[INFO] [stdout] 91 |         pub fn l2sh(value: u16) -> u8 {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lsh1`
[INFO] [stdout]   --> src/instruction_set.rs:95:16
[INFO] [stdout]    |
[INFO] [stdout] 95 |         pub fn lsh1(value: u16) -> u16 {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lsh2`
[INFO] [stdout]   --> src/instruction_set.rs:99:16
[INFO] [stdout]    |
[INFO] [stdout] 99 |         pub fn lsh2(value: u16) -> u16 {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lsh3`
[INFO] [stdout]    --> src/instruction_set.rs:103:16
[INFO] [stdout]     |
[INFO] [stdout] 103 |         pub fn lsh3(value: u16) -> u16 {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ram`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     ram: [u8; 4096],
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     i: [u8; 16],
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `delay_timer`
[INFO] [stdout]   --> src/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     delay_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sound_timer`
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     sound_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `_E` should have a snake case name
[INFO] [stdout]    --> src/instruction_set.rs:245:16
[INFO] [stdout]     |
[INFO] [stdout] 245 |         pub fn _E(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                ^^ help: convert the identifier to snake case: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 40 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.46s
[INFO] running `Command { std: "docker" "inspect" "38bed85b6f6610f4fac34409716df5f13bb99a0018f7ea256c9f1f5a364b41c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38bed85b6f6610f4fac34409716df5f13bb99a0018f7ea256c9f1f5a364b41c8", kill_on_drop: false }`
[INFO] [stdout] 38bed85b6f6610f4fac34409716df5f13bb99a0018f7ea256c9f1f5a364b41c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5994e443387f3a8f56e6fbc33e6d82de049e8f0854e387bf8fd8531b3e9f067
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b5994e443387f3a8f56e6fbc33e6d82de049e8f0854e387bf8fd8531b3e9f067", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `digit_8 as d8`
[INFO] [stdout]   --> src/instruction_set.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     use digit_8 as d8;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `digit_e as de`
[INFO] [stdout]   --> src/instruction_set.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     use digit_e as de;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `digit_f as df`
[INFO] [stdout]   --> src/instruction_set.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     use digit_f as df;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/instruction_set.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 (value >> (4 * lsh_place))
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:177:19
[INFO] [stdout]     |
[INFO] [stdout] 177 |         pub fn _0(chip: Chip8InterpreterRef, address: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `address`
[INFO] [stdout]    --> src/instruction_set.rs:177:46
[INFO] [stdout]     |
[INFO] [stdout] 177 |         pub fn _0(chip: Chip8InterpreterRef, address: u16) -> Option<()> {
[INFO] [stdout]     |                                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:182:20
[INFO] [stdout]     |
[INFO] [stdout] 182 |         pub fn _e0(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                    ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:225:19
[INFO] [stdout]     |
[INFO] [stdout] 225 |         pub fn _3(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:229:19
[INFO] [stdout]     |
[INFO] [stdout] 229 |         pub fn _4(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:233:19
[INFO] [stdout]     |
[INFO] [stdout] 233 |         pub fn _5(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:237:19
[INFO] [stdout]     |
[INFO] [stdout] 237 |         pub fn _6(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:241:19
[INFO] [stdout]     |
[INFO] [stdout] 241 |         pub fn _7(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:245:19
[INFO] [stdout]     |
[INFO] [stdout] 245 |         pub fn _E(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/instruction_set.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |             let mut first_digit = HashMap::with_capacity(FIRST_DIGIT_OPCODE_COUNT);
[INFO] [stdout]    |                 ----^^^^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/instruction_set.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |             let mut digit_8 = HashMap::with_capacity(DIGIT_8_OPCODE_COUNT);
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/instruction_set.rs:61:17
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let mut digit_e = HashMap::with_capacity(DIGIT_E_OPCODE_COUNT);
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/instruction_set.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |             let mut digit_f = HashMap::with_capacity(DIGIT_F_OPCODE_COUNT);
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Instruction`
[INFO] [stdout]  --> src/instruction_set.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     type Instruction = fn(Chip8InterpreterRef, u16) -> Option<()>;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FIRST_DIGIT_OPCODE_COUNT`
[INFO] [stdout]  --> src/instruction_set.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     const FIRST_DIGIT_OPCODE_COUNT: usize = 12;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_0_OPCODE_COUNT`
[INFO] [stdout]  --> src/instruction_set.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     const DIGIT_0_OPCODE_COUNT: usize = 3;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_8_OPCODE_COUNT`
[INFO] [stdout]  --> src/instruction_set.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     const DIGIT_8_OPCODE_COUNT: usize = 9;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_E_OPCODE_COUNT`
[INFO] [stdout]  --> src/instruction_set.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     const DIGIT_E_OPCODE_COUNT: usize = 2;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_F_OPCODE_COUNT`
[INFO] [stdout]   --> src/instruction_set.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     const DIGIT_F_OPCODE_COUNT: usize = 9;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FIRST_DIGIT_OPCODES`
[INFO] [stdout]   --> src/instruction_set.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     const FIRST_DIGIT_OPCODES: [u16; 7] = [0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7];
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FIRST_DIGIT_INSTRUCTIONS`
[INFO] [stdout]   --> src/instruction_set.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     const FIRST_DIGIT_INSTRUCTIONS: [Instruction; 7] =
[INFO] [stdout] 16 | |         [d::_1, d::_2, d::_3, d::_4, d::_5, d::_6, d::_7];
[INFO] [stdout]    | |__________________________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_0_OPCODES`
[INFO] [stdout]   --> src/instruction_set.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     const DIGIT_0_OPCODES: [u16; DIGIT_0_OPCODE_COUNT] = [0x0, 0xE0, 0xEE];
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_0_INSTRUCTIONS`
[INFO] [stdout]   --> src/instruction_set.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     const DIGIT_0_INSTRUCTIONS: [Instruction; DIGIT_0_OPCODE_COUNT] = [d0::_0, d0::_e0, d0::_ee];
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Chip8InstructionSet`
[INFO] [stdout]   --> src/instruction_set.rs:40:16
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub struct Chip8InstructionSet {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/instruction_set.rs:49:16
[INFO] [stdout]    |
[INFO] [stdout] 49 |         pub fn new() -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lsh`
[INFO] [stdout]   --> src/instruction_set.rs:76:16
[INFO] [stdout]    |
[INFO] [stdout] 76 |         pub fn lsh(value: u16, lsh_place: u16) -> u16 {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `opcode_lsh`
[INFO] [stdout]   --> src/instruction_set.rs:82:16
[INFO] [stdout]    |
[INFO] [stdout] 82 |         pub fn opcode_lsh(value: u16, lsh_place: u16) -> u16 {
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `l2sh`
[INFO] [stdout]   --> src/instruction_set.rs:91:16
[INFO] [stdout]    |
[INFO] [stdout] 91 |         pub fn l2sh(value: u16) -> u8 {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lsh1`
[INFO] [stdout]   --> src/instruction_set.rs:95:16
[INFO] [stdout]    |
[INFO] [stdout] 95 |         pub fn lsh1(value: u16) -> u16 {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lsh2`
[INFO] [stdout]   --> src/instruction_set.rs:99:16
[INFO] [stdout]    |
[INFO] [stdout] 99 |         pub fn lsh2(value: u16) -> u16 {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lsh3`
[INFO] [stdout]    --> src/instruction_set.rs:103:16
[INFO] [stdout]     |
[INFO] [stdout] 103 |         pub fn lsh3(value: u16) -> u16 {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ram`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     ram: [u8; 4096],
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     i: [u8; 16],
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `delay_timer`
[INFO] [stdout]   --> src/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     delay_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sound_timer`
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     sound_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `_E` should have a snake case name
[INFO] [stdout]    --> src/instruction_set.rs:245:16
[INFO] [stdout]     |
[INFO] [stdout] 245 |         pub fn _E(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                ^^ help: convert the identifier to snake case: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 40 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `digit_8 as d8`
[INFO] [stdout]   --> src/instruction_set.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     use digit_8 as d8;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `digit_e as de`
[INFO] [stdout]   --> src/instruction_set.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     use digit_e as de;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `digit_f as df`
[INFO] [stdout]   --> src/instruction_set.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     use digit_f as df;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/instruction_set.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 (value >> (4 * lsh_place))
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:177:19
[INFO] [stdout]     |
[INFO] [stdout] 177 |         pub fn _0(chip: Chip8InterpreterRef, address: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `address`
[INFO] [stdout]    --> src/instruction_set.rs:177:46
[INFO] [stdout]     |
[INFO] [stdout] 177 |         pub fn _0(chip: Chip8InterpreterRef, address: u16) -> Option<()> {
[INFO] [stdout]     |                                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:182:20
[INFO] [stdout]     |
[INFO] [stdout] 182 |         pub fn _e0(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                    ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:225:19
[INFO] [stdout]     |
[INFO] [stdout] 225 |         pub fn _3(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:229:19
[INFO] [stdout]     |
[INFO] [stdout] 229 |         pub fn _4(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:233:19
[INFO] [stdout]     |
[INFO] [stdout] 233 |         pub fn _5(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:237:19
[INFO] [stdout]     |
[INFO] [stdout] 237 |         pub fn _6(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:241:19
[INFO] [stdout]     |
[INFO] [stdout] 241 |         pub fn _7(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `chip`
[INFO] [stdout]    --> src/instruction_set.rs:245:19
[INFO] [stdout]     |
[INFO] [stdout] 245 |         pub fn _E(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/instruction_set.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |             let mut first_digit = HashMap::with_capacity(FIRST_DIGIT_OPCODE_COUNT);
[INFO] [stdout]    |                 ----^^^^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/instruction_set.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |             let mut digit_8 = HashMap::with_capacity(DIGIT_8_OPCODE_COUNT);
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/instruction_set.rs:61:17
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let mut digit_e = HashMap::with_capacity(DIGIT_E_OPCODE_COUNT);
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/instruction_set.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |             let mut digit_f = HashMap::with_capacity(DIGIT_F_OPCODE_COUNT);
[INFO] [stdout]    |                 ----^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Instruction`
[INFO] [stdout]  --> src/instruction_set.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     type Instruction = fn(Chip8InterpreterRef, u16) -> Option<()>;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FIRST_DIGIT_OPCODE_COUNT`
[INFO] [stdout]  --> src/instruction_set.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     const FIRST_DIGIT_OPCODE_COUNT: usize = 12;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_0_OPCODE_COUNT`
[INFO] [stdout]  --> src/instruction_set.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     const DIGIT_0_OPCODE_COUNT: usize = 3;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_8_OPCODE_COUNT`
[INFO] [stdout]  --> src/instruction_set.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     const DIGIT_8_OPCODE_COUNT: usize = 9;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_E_OPCODE_COUNT`
[INFO] [stdout]  --> src/instruction_set.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     const DIGIT_E_OPCODE_COUNT: usize = 2;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_F_OPCODE_COUNT`
[INFO] [stdout]   --> src/instruction_set.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     const DIGIT_F_OPCODE_COUNT: usize = 9;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FIRST_DIGIT_OPCODES`
[INFO] [stdout]   --> src/instruction_set.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     const FIRST_DIGIT_OPCODES: [u16; 7] = [0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7];
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FIRST_DIGIT_INSTRUCTIONS`
[INFO] [stdout]   --> src/instruction_set.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     const FIRST_DIGIT_INSTRUCTIONS: [Instruction; 7] =
[INFO] [stdout] 16 | |         [d::_1, d::_2, d::_3, d::_4, d::_5, d::_6, d::_7];
[INFO] [stdout]    | |__________________________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_0_OPCODES`
[INFO] [stdout]   --> src/instruction_set.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     const DIGIT_0_OPCODES: [u16; DIGIT_0_OPCODE_COUNT] = [0x0, 0xE0, 0xEE];
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DIGIT_0_INSTRUCTIONS`
[INFO] [stdout]   --> src/instruction_set.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     const DIGIT_0_INSTRUCTIONS: [Instruction; DIGIT_0_OPCODE_COUNT] = [d0::_0, d0::_e0, d0::_ee];
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Chip8InstructionSet`
[INFO] [stdout]   --> src/instruction_set.rs:40:16
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub struct Chip8InstructionSet {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/instruction_set.rs:49:16
[INFO] [stdout]    |
[INFO] [stdout] 49 |         pub fn new() -> Self {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lsh`
[INFO] [stdout]   --> src/instruction_set.rs:76:16
[INFO] [stdout]    |
[INFO] [stdout] 76 |         pub fn lsh(value: u16, lsh_place: u16) -> u16 {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `opcode_lsh`
[INFO] [stdout]   --> src/instruction_set.rs:82:16
[INFO] [stdout]    |
[INFO] [stdout] 82 |         pub fn opcode_lsh(value: u16, lsh_place: u16) -> u16 {
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `l2sh`
[INFO] [stdout]   --> src/instruction_set.rs:91:16
[INFO] [stdout]    |
[INFO] [stdout] 91 |         pub fn l2sh(value: u16) -> u8 {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lsh1`
[INFO] [stdout]   --> src/instruction_set.rs:95:16
[INFO] [stdout]    |
[INFO] [stdout] 95 |         pub fn lsh1(value: u16) -> u16 {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lsh2`
[INFO] [stdout]   --> src/instruction_set.rs:99:16
[INFO] [stdout]    |
[INFO] [stdout] 99 |         pub fn lsh2(value: u16) -> u16 {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lsh3`
[INFO] [stdout]    --> src/instruction_set.rs:103:16
[INFO] [stdout]     |
[INFO] [stdout] 103 |         pub fn lsh3(value: u16) -> u16 {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ram`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     ram: [u8; 4096],
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     i: [u8; 16],
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `delay_timer`
[INFO] [stdout]   --> src/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     delay_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sound_timer`
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     sound_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `_E` should have a snake case name
[INFO] [stdout]    --> src/instruction_set.rs:245:16
[INFO] [stdout]     |
[INFO] [stdout] 245 |         pub fn _E(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stdout]     |                ^^ help: convert the identifier to snake case: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 40 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "b5994e443387f3a8f56e6fbc33e6d82de049e8f0854e387bf8fd8531b3e9f067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5994e443387f3a8f56e6fbc33e6d82de049e8f0854e387bf8fd8531b3e9f067", kill_on_drop: false }`
[INFO] [stdout] b5994e443387f3a8f56e6fbc33e6d82de049e8f0854e387bf8fd8531b3e9f067
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 073d3671dd7e35bfb111dd9c812db14259895eace87bee69bab92c99ebff3d18
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "073d3671dd7e35bfb111dd9c812db14259895eace87bee69bab92c99ebff3d18", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `digit_8 as d8`
[INFO] [stderr]   --> src/instruction_set.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     use digit_8 as d8;
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `digit_e as de`
[INFO] [stderr]   --> src/instruction_set.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     use digit_e as de;
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `digit_f as df`
[INFO] [stderr]   --> src/instruction_set.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     use digit_f as df;
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/instruction_set.rs:85:17
[INFO] [stderr]    |
[INFO] [stderr] 85 |                 (value >> (4 * lsh_place))
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]    --> src/instruction_set.rs:177:19
[INFO] [stderr]     |
[INFO] [stderr] 177 |         pub fn _0(chip: Chip8InterpreterRef, address: u16) -> Option<()> {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `address`
[INFO] [stderr]    --> src/instruction_set.rs:177:46
[INFO] [stderr]     |
[INFO] [stderr] 177 |         pub fn _0(chip: Chip8InterpreterRef, address: u16) -> Option<()> {
[INFO] [stderr]     |                                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]    --> src/instruction_set.rs:182:20
[INFO] [stderr]     |
[INFO] [stderr] 182 |         pub fn _e0(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stderr]     |                    ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]    --> src/instruction_set.rs:225:19
[INFO] [stderr]     |
[INFO] [stderr] 225 |         pub fn _3(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]    --> src/instruction_set.rs:229:19
[INFO] [stderr]     |
[INFO] [stderr] 229 |         pub fn _4(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `digit_8 as d8`
[INFO] [stderr]   --> src/instruction_set.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     use digit_8 as d8;
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]    --> src/instruction_set.rs:233:19
[INFO] [stderr]     |
[INFO] [stderr] 233 |         pub fn _5(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `digit_e as de`
[INFO] [stderr]   --> src/instruction_set.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     use digit_e as de;
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `digit_f as df`
[INFO] [stderr]   --> src/instruction_set.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     use digit_f as df;
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]    --> src/instruction_set.rs:237:19
[INFO] [stderr]     |
[INFO] [stderr] 237 |         pub fn _6(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]    --> src/instruction_set.rs:241:19
[INFO] [stderr]     |
[INFO] [stderr] 241 |         pub fn _7(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/instruction_set.rs:85:17
[INFO] [stderr]    |
[INFO] [stderr] 85 |                 (value >> (4 * lsh_place))
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]    --> src/instruction_set.rs:245:19
[INFO] [stderr]     |
[INFO] [stderr] 245 |         pub fn _E(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]    --> src/instruction_set.rs:177:19
[INFO] [stderr]     |
[INFO] [stderr] 177 |         pub fn _0(chip: Chip8InterpreterRef, address: u16) -> Option<()> {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/instruction_set.rs:50:17
[INFO] [stderr]    |
[INFO] [stderr] 50 |             let mut first_digit = HashMap::with_capacity(FIRST_DIGIT_OPCODE_COUNT);
[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: unused variable: `address`
[INFO] [stderr]    --> src/instruction_set.rs:177:46
[INFO] [stderr]     |
[INFO] [stderr] 177 |         pub fn _0(chip: Chip8InterpreterRef, address: u16) -> Option<()> {
[INFO] [stderr]     |                                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/instruction_set.rs:60:17
[INFO] [stderr]    |
[INFO] [stderr] 60 |             let mut digit_8 = HashMap::with_capacity(DIGIT_8_OPCODE_COUNT);
[INFO] [stderr]    |                 ----^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]    --> src/instruction_set.rs:182:20
[INFO] [stderr]     |
[INFO] [stderr] 182 |         pub fn _e0(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stderr]     |                    ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/instruction_set.rs:61:17
[INFO] [stderr]    |
[INFO] [stderr] 61 |             let mut digit_e = HashMap::with_capacity(DIGIT_E_OPCODE_COUNT);
[INFO] [stderr]    |                 ----^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]    --> src/instruction_set.rs:225:19
[INFO] [stderr]     |
[INFO] [stderr] 225 |         pub fn _3(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]    --> src/instruction_set.rs:229:19
[INFO] [stderr]     |
[INFO] [stderr] 229 |         pub fn _4(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/instruction_set.rs:62:17
[INFO] [stderr]    |
[INFO] [stderr] 62 |             let mut digit_f = HashMap::with_capacity(DIGIT_F_OPCODE_COUNT);
[INFO] [stderr]    |                 ----^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]    --> src/instruction_set.rs:233:19
[INFO] [stderr]     |
[INFO] [stderr] 233 |         pub fn _5(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Instruction`
[INFO] [stderr]  --> src/instruction_set.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     type Instruction = fn(Chip8InterpreterRef, u16) -> Option<()>;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]    --> src/instruction_set.rs:237:19
[INFO] [stderr]     |
[INFO] [stderr] 237 |         pub fn _6(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `FIRST_DIGIT_OPCODE_COUNT`
[INFO] [stderr]  --> src/instruction_set.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     const FIRST_DIGIT_OPCODE_COUNT: usize = 12;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]    --> src/instruction_set.rs:241:19
[INFO] [stderr]     |
[INFO] [stderr] 241 |         pub fn _7(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `DIGIT_0_OPCODE_COUNT`
[INFO] [stderr]  --> src/instruction_set.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     const DIGIT_0_OPCODE_COUNT: usize = 3;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]    --> src/instruction_set.rs:245:19
[INFO] [stderr]     |
[INFO] [stderr] 245 |         pub fn _E(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_chip`
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `DIGIT_8_OPCODE_COUNT`
[INFO] [stderr]  --> src/instruction_set.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     const DIGIT_8_OPCODE_COUNT: usize = 9;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `DIGIT_E_OPCODE_COUNT`
[INFO] [stderr]  --> src/instruction_set.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     const DIGIT_E_OPCODE_COUNT: usize = 2;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `DIGIT_F_OPCODE_COUNT`
[INFO] [stderr]   --> src/instruction_set.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     const DIGIT_F_OPCODE_COUNT: usize = 9;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/instruction_set.rs:50:17
[INFO] [stderr]    |
[INFO] [stderr] 50 |             let mut first_digit = HashMap::with_capacity(FIRST_DIGIT_OPCODE_COUNT);
[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: constant is never used: `FIRST_DIGIT_OPCODES`
[INFO] [stderr]   --> src/instruction_set.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     const FIRST_DIGIT_OPCODES: [u16; 7] = [0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/instruction_set.rs:60:17
[INFO] [stderr]    |
[INFO] [stderr] 60 |             let mut digit_8 = HashMap::with_capacity(DIGIT_8_OPCODE_COUNT);
[INFO] [stderr]    |                 ----^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `FIRST_DIGIT_INSTRUCTIONS`
[INFO] [stderr]   --> src/instruction_set.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | /     const FIRST_DIGIT_INSTRUCTIONS: [Instruction; 7] =
[INFO] [stderr] 16 | |         [d::_1, d::_2, d::_3, d::_4, d::_5, d::_6, d::_7];
[INFO] [stderr]    | |__________________________________________________________^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/instruction_set.rs:61:17
[INFO] [stderr]    |
[INFO] [stderr] 61 |             let mut digit_e = HashMap::with_capacity(DIGIT_E_OPCODE_COUNT);
[INFO] [stderr]    |                 ----^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `DIGIT_0_OPCODES`
[INFO] [stderr]   --> src/instruction_set.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     const DIGIT_0_OPCODES: [u16; DIGIT_0_OPCODE_COUNT] = [0x0, 0xE0, 0xEE];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/instruction_set.rs:62:17
[INFO] [stderr]    |
[INFO] [stderr] 62 |             let mut digit_f = HashMap::with_capacity(DIGIT_F_OPCODE_COUNT);
[INFO] [stderr]    |                 ----^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `DIGIT_0_INSTRUCTIONS`
[INFO] [stderr]   --> src/instruction_set.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     const DIGIT_0_INSTRUCTIONS: [Instruction; DIGIT_0_OPCODE_COUNT] = [d0::_0, d0::_e0, d0::_ee];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Instruction`
[INFO] [stderr]  --> src/instruction_set.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     type Instruction = fn(Chip8InterpreterRef, u16) -> Option<()>;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Chip8InstructionSet`
[INFO] [stderr]   --> src/instruction_set.rs:40:16
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub struct Chip8InstructionSet {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `FIRST_DIGIT_OPCODE_COUNT`
[INFO] [stderr]  --> src/instruction_set.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     const FIRST_DIGIT_OPCODE_COUNT: usize = 12;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/instruction_set.rs:49:16
[INFO] [stderr]    |
[INFO] [stderr] 49 |         pub fn new() -> Self {
[INFO] [stderr]    |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `DIGIT_0_OPCODE_COUNT`
[INFO] [stderr]  --> src/instruction_set.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     const DIGIT_0_OPCODE_COUNT: usize = 3;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `lsh`
[INFO] [stderr]   --> src/instruction_set.rs:76:16
[INFO] [stderr]    |
[INFO] [stderr] 76 |         pub fn lsh(value: u16, lsh_place: u16) -> u16 {
[INFO] [stderr]    |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `DIGIT_8_OPCODE_COUNT`
[INFO] [stderr]  --> src/instruction_set.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     const DIGIT_8_OPCODE_COUNT: usize = 9;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `opcode_lsh`
[INFO] [stderr]   --> src/instruction_set.rs:82:16
[INFO] [stderr]    |
[INFO] [stderr] 82 |         pub fn opcode_lsh(value: u16, lsh_place: u16) -> u16 {
[INFO] [stderr]    |                ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `DIGIT_E_OPCODE_COUNT`
[INFO] [stderr]  --> src/instruction_set.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     const DIGIT_E_OPCODE_COUNT: usize = 2;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `l2sh`
[INFO] [stderr]   --> src/instruction_set.rs:91:16
[INFO] [stderr]    |
[INFO] [stderr] 91 |         pub fn l2sh(value: u16) -> u8 {
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `lsh1`
[INFO] [stderr]   --> src/instruction_set.rs:95:16
[INFO] [stderr]    |
[INFO] [stderr] 95 |         pub fn lsh1(value: u16) -> u16 {
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `DIGIT_F_OPCODE_COUNT`
[INFO] [stderr]   --> src/instruction_set.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     const DIGIT_F_OPCODE_COUNT: usize = 9;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `lsh2`
[INFO] [stderr]   --> src/instruction_set.rs:99:16
[INFO] [stderr]    |
[INFO] [stderr] 99 |         pub fn lsh2(value: u16) -> u16 {
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `FIRST_DIGIT_OPCODES`
[INFO] [stderr]   --> src/instruction_set.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     const FIRST_DIGIT_OPCODES: [u16; 7] = [0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `lsh3`
[INFO] [stderr]    --> src/instruction_set.rs:103:16
[INFO] [stderr]     |
[INFO] [stderr] 103 |         pub fn lsh3(value: u16) -> u16 {
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `ram`
[INFO] [stderr]  --> src/lib.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     ram: [u8; 4096],
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `FIRST_DIGIT_INSTRUCTIONS`
[INFO] [stderr]   --> src/instruction_set.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | /     const FIRST_DIGIT_INSTRUCTIONS: [Instruction; 7] =
[INFO] [stderr] 16 | |         [d::_1, d::_2, d::_3, d::_4, d::_5, d::_6, d::_7];
[INFO] [stderr]    | |__________________________________________________________^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `i`
[INFO] [stderr]   --> src/lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     i: [u8; 16],
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `delay_timer`
[INFO] [stderr]   --> src/lib.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     delay_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `DIGIT_0_OPCODES`
[INFO] [stderr]   --> src/instruction_set.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     const DIGIT_0_OPCODES: [u16; DIGIT_0_OPCODE_COUNT] = [0x0, 0xE0, 0xEE];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `sound_timer`
[INFO] [stderr]   --> src/lib.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     sound_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `DIGIT_0_INSTRUCTIONS`
[INFO] [stderr]   --> src/instruction_set.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     const DIGIT_0_INSTRUCTIONS: [Instruction; DIGIT_0_OPCODE_COUNT] = [d0::_0, d0::_e0, d0::_ee];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Chip8InstructionSet`
[INFO] [stderr]   --> src/instruction_set.rs:40:16
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub struct Chip8InstructionSet {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `_E` should have a snake case name
[INFO] [stderr]    --> src/instruction_set.rs:245:16
[INFO] [stderr]     |
[INFO] [stderr] 245 |         pub fn _E(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stderr]     |                ^^ help: convert the identifier to snake case: `_e`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 40 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/instruction_set.rs:49:16
[INFO] [stderr]    |
[INFO] [stderr] 49 |         pub fn new() -> Self {
[INFO] [stderr]    |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `lsh`
[INFO] [stderr]   --> src/instruction_set.rs:76:16
[INFO] [stderr]    |
[INFO] [stderr] 76 |         pub fn lsh(value: u16, lsh_place: u16) -> u16 {
[INFO] [stderr]    |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `opcode_lsh`
[INFO] [stderr]   --> src/instruction_set.rs:82:16
[INFO] [stderr]    |
[INFO] [stderr] 82 |         pub fn opcode_lsh(value: u16, lsh_place: u16) -> u16 {
[INFO] [stderr]    |                ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `l2sh`
[INFO] [stderr]   --> src/instruction_set.rs:91:16
[INFO] [stderr]    |
[INFO] [stderr] 91 |         pub fn l2sh(value: u16) -> u8 {
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `lsh1`
[INFO] [stderr]   --> src/instruction_set.rs:95:16
[INFO] [stderr]    |
[INFO] [stderr] 95 |         pub fn lsh1(value: u16) -> u16 {
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `lsh2`
[INFO] [stderr]   --> src/instruction_set.rs:99:16
[INFO] [stderr]    |
[INFO] [stderr] 99 |         pub fn lsh2(value: u16) -> u16 {
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `lsh3`
[INFO] [stderr]    --> src/instruction_set.rs:103:16
[INFO] [stderr]     |
[INFO] [stderr] 103 |         pub fn lsh3(value: u16) -> u16 {
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `ram`
[INFO] [stderr]  --> src/lib.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     ram: [u8; 4096],
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `i`
[INFO] [stderr]   --> src/lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     i: [u8; 16],
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `delay_timer`
[INFO] [stderr]   --> src/lib.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     delay_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `sound_timer`
[INFO] [stderr]   --> src/lib.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     sound_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `_E` should have a snake case name
[INFO] [stderr]    --> src/instruction_set.rs:245:16
[INFO] [stderr]     |
[INFO] [stderr] 245 |         pub fn _E(chip: Chip8InterpreterRef, _: u16) -> Option<()> {
[INFO] [stderr]     |                ^^ help: convert the identifier to snake case: `_e`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 40 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chip8-3cdc6c3243b4d762
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chip8-10a806bfbd797b96
[INFO] [stderr]    Doc-tests chip8
[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] [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] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> /opt/rustwide/workdir/src/instruction_set.rs:85:17
[INFO] [stderr]    |
[INFO] [stderr] 85 |                 (value >> (4 * lsh_place))
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[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 `Command { std: "docker" "inspect" "073d3671dd7e35bfb111dd9c812db14259895eace87bee69bab92c99ebff3d18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "073d3671dd7e35bfb111dd9c812db14259895eace87bee69bab92c99ebff3d18", kill_on_drop: false }`
[INFO] [stdout] 073d3671dd7e35bfb111dd9c812db14259895eace87bee69bab92c99ebff3d18
