[INFO] updating cached repository https://github.com/Ajhaa/chip8
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c6f6ffd02d895a3a7133f01df79385dfb9f6b27e
[INFO] checking Ajhaa/chip8 against try#13f916f63bc6575d5ff1f989237dfabe88981368 for pr-69880
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAjhaa%2Fchip8" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ajhaa/chip8 on toolchain 13f916f63bc6575d5ff1f989237dfabe88981368
[INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Ajhaa/chip8
[INFO] finished tweaking git repo https://github.com/Ajhaa/chip8
[INFO] tweaked toml for git repo https://github.com/Ajhaa/chip8 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Ajhaa/chip8 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6ef627d14ea9503d156d2981cc0ec15a5d0c6112671379c4c1ff959e08caf53a
[INFO] running `"docker" "start" "-a" "6ef627d14ea9503d156d2981cc0ec15a5d0c6112671379c4c1ff959e08caf53a"`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.58
[INFO] [stderr]    Compiling bumpalo v3.1.2
[INFO] [stderr]    Compiling wasm-bindgen v0.2.58
[INFO] [stderr]     Checking futures-core v0.3.3
[INFO] [stderr]     Checking futures-sink v0.3.3
[INFO] [stderr]     Checking futures-io v0.3.3
[INFO] [stderr]     Checking futures-task v0.3.3
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.2.50
[INFO] [stderr]    Compiling futures-macro v0.3.3
[INFO] [stderr]     Checking futures-channel v0.3.3
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.58
[INFO] [stderr]     Checking futures-util v0.3.3
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.58
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.58
[INFO] [stderr]     Checking futures-executor v0.3.3
[INFO] [stderr]     Checking futures v0.3.3
[INFO] [stderr]     Checking wasm-timer v0.2.4
[INFO] [stderr]     Checking js-sys v0.3.35
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking wasm-bindgen-futures v0.3.27
[INFO] [stderr]     Checking chip8-wasm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking wasm-bindgen-test v0.2.50
[INFO] [stderr] warning: unused import: `rand::prelude::*`
[INFO] [stderr]  --> src/chip.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use rand::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/chip.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]  --> src/chip.rs:8:25
[INFO] [stderr]   |
[INFO] [stderr] 8 | const TICK_RATE: i128 = (1_000_000_000 / 60);
[INFO] [stderr]   |                         ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/assembler.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | /     match parts[0] {
[INFO] [stderr] 14 | |         "LD" => {
[INFO] [stderr] 15 | |             return load(parts);
[INFO] [stderr] 16 | |         },
[INFO] [stderr] ...  |
[INFO] [stderr] 19 | |         }
[INFO] [stderr] 20 | |     }
[INFO] [stderr]    | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stderr] 21 | 
[INFO] [stderr] 22 |       0
[INFO] [stderr]    |       ^ unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `system`
[INFO] [stderr]   --> src/lib.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut system = Chip::new();
[INFO] [stderr]    |             ^^^^^^ help: consider prefixing with an underscore: `_system`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `fibonacci`
[INFO] [stderr]   --> src/lib.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let fibonacci = vec![
[INFO] [stderr]    |         ^^^^^^^^^ help: consider prefixing with an underscore: `_fibonacci`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `i` is assigned to, but never used
[INFO] [stderr]    --> src/chip.rs:135:17
[INFO] [stderr]     |
[INFO] [stderr] 135 |         let mut i = 0;
[INFO] [stderr]     |                 ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider using `_i` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reg`
[INFO] [stderr]    --> src/chip.rs:136:13
[INFO] [stderr]     |
[INFO] [stderr] 136 |         for reg in &self.V {
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_reg`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/assembler.rs:33:19
[INFO] [stderr]    |
[INFO] [stderr] 33 |         if let Ok(x) = number {
[INFO] [stderr]    |                   ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lower`
[INFO] [stderr]   --> src/assembler.rs:34:17
[INFO] [stderr]    |
[INFO] [stderr] 34 |             let lower = 0x8000 + (reg << 8);
[INFO] [stderr]    |                 ^^^^^ help: consider prefixing with an underscore: `_lower`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut system = Chip::new();
[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: function is never used: `set_panic_hook`
[INFO] [stderr]  --> src/utils.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn set_panic_hook() {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `opcode`
[INFO] [stderr]   --> src/chip.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     opcode: u16,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `sound_timer`
[INFO] [stderr]   --> src/chip.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     sound_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `assemble`
[INFO] [stderr]  --> src/assembler.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn assemble(symbols: &Vec<&str>) -> Vec<u16> {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `translate`
[INFO] [stderr]   --> src/assembler.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn translate(command: &str) -> u16 {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `load`
[INFO] [stderr]   --> src/assembler.rs:25:4
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn load(parts: Vec<&str>) -> u16{
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `V` should have a snake case name
[INFO] [stderr]   --> src/chip.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     V: [u8; 16],
[INFO] [stderr]    |     ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `I` should have a snake case name
[INFO] [stderr]   --> src/chip.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub I: u16,
[INFO] [stderr]    |         ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::prelude::*`
[INFO] [stderr]  --> src/chip.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use rand::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/chip.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]  --> src/chip.rs:8:25
[INFO] [stderr]   |
[INFO] [stderr] 8 | const TICK_RATE: i128 = (1_000_000_000 / 60);
[INFO] [stderr]   |                         ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/assembler.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | /     match parts[0] {
[INFO] [stderr] 14 | |         "LD" => {
[INFO] [stderr] 15 | |             return load(parts);
[INFO] [stderr] 16 | |         },
[INFO] [stderr] ...  |
[INFO] [stderr] 19 | |         }
[INFO] [stderr] 20 | |     }
[INFO] [stderr]    | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stderr] 21 | 
[INFO] [stderr] 22 |       0
[INFO] [stderr]    |       ^ unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `system`
[INFO] [stderr]   --> src/lib.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut system = Chip::new();
[INFO] [stderr]    |             ^^^^^^ help: consider prefixing with an underscore: `_system`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `fibonacci`
[INFO] [stderr]   --> src/lib.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let fibonacci = vec![
[INFO] [stderr]    |         ^^^^^^^^^ help: consider prefixing with an underscore: `_fibonacci`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `i` is assigned to, but never used
[INFO] [stderr]    --> src/chip.rs:135:17
[INFO] [stderr]     |
[INFO] [stderr] 135 |         let mut i = 0;
[INFO] [stderr]     |                 ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider using `_i` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reg`
[INFO] [stderr]    --> src/chip.rs:136:13
[INFO] [stderr]     |
[INFO] [stderr] 136 |         for reg in &self.V {
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_reg`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/assembler.rs:33:19
[INFO] [stderr]    |
[INFO] [stderr] 33 |         if let Ok(x) = number {
[INFO] [stderr]    |                   ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lower`
[INFO] [stderr]   --> src/assembler.rs:34:17
[INFO] [stderr]    |
[INFO] [stderr] 34 |             let lower = 0x8000 + (reg << 8);
[INFO] [stderr]    |                 ^^^^^ help: consider prefixing with an underscore: `_lower`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut system = Chip::new();
[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: function is never used: `set_panic_hook`
[INFO] [stderr]  --> src/utils.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn set_panic_hook() {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `opcode`
[INFO] [stderr]   --> src/chip.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     opcode: u16,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `sound_timer`
[INFO] [stderr]   --> src/chip.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     sound_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `assemble`
[INFO] [stderr]  --> src/assembler.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn assemble(symbols: &Vec<&str>) -> Vec<u16> {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `translate`
[INFO] [stderr]   --> src/assembler.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn translate(command: &str) -> u16 {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `load`
[INFO] [stderr]   --> src/assembler.rs:25:4
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn load(parts: Vec<&str>) -> u16{
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `V` should have a snake case name
[INFO] [stderr]   --> src/chip.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     V: [u8; 16],
[INFO] [stderr]    |     ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `I` should have a snake case name
[INFO] [stderr]   --> src/chip.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub I: u16,
[INFO] [stderr]    |         ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.42s
[INFO] running `"docker" "inspect" "6ef627d14ea9503d156d2981cc0ec15a5d0c6112671379c4c1ff959e08caf53a"`
[INFO] running `"docker" "rm" "-f" "6ef627d14ea9503d156d2981cc0ec15a5d0c6112671379c4c1ff959e08caf53a"`
[INFO] [stdout] 6ef627d14ea9503d156d2981cc0ec15a5d0c6112671379c4c1ff959e08caf53a