[INFO] cloning repository https://github.com/ClockworkG/chip8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ClockworkG/chip8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FClockworkG%2Fchip8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FClockworkG%2Fchip8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 92f578ad0a0fe0992d90f2e9b56c1ecada9bfd83
[INFO] checking ClockworkG/chip8/92f578ad0a0fe0992d90f2e9b56c1ecada9bfd83 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FClockworkG%2Fchip8" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ClockworkG/chip8 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ClockworkG/chip8
[INFO] finished tweaking git repo https://github.com/ClockworkG/chip8
[INFO] tweaked toml for git repo https://github.com/ClockworkG/chip8 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ClockworkG/chip8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded minifb v0.13.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d44e01eac74a2f2562ae94d575ed957bfe164c0eda14a5016aa3a925977e10a
[INFO] running `Command { std: "docker" "start" "-a" "8d44e01eac74a2f2562ae94d575ed957bfe164c0eda14a5016aa3a925977e10a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d44e01eac74a2f2562ae94d575ed957bfe164c0eda14a5016aa3a925977e10a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d44e01eac74a2f2562ae94d575ed957bfe164c0eda14a5016aa3a925977e10a", kill_on_drop: false }`
[INFO] [stdout] 8d44e01eac74a2f2562ae94d575ed957bfe164c0eda14a5016aa3a925977e10a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff3556bc57bdc5b810a90d8dd7debe6d1773d5c1323fd7a11e153def877c9115
[INFO] running `Command { std: "docker" "start" "-a" "ff3556bc57bdc5b810a90d8dd7debe6d1773d5c1323fd7a11e153def877c9115", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]    Compiling cc v1.0.46
[INFO] [stderr]    Compiling x11-dl v2.18.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking getrandom v0.1.12
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking termion v1.5.3
[INFO] [stderr]    Compiling minifb v0.13.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking rustyline v5.0.3
[INFO] [stderr]     Checking chip-8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no function or associated item named `new` found for struct `memory::MainMemory` in the current scope
[INFO] [stdout]    --> src/memory.rs:186:35
[INFO] [stdout]     |
[INFO] [stdout] 17  | pub struct MainMemory {
[INFO] [stdout]     | --------------------- function or associated item `new` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 186 |         let mut mem = MainMemory::new();
[INFO] [stdout]     |                                   ^^^ function or associated item not found in `MainMemory`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `memory::MainMemory`, consider using `memory::MainMemory::with_rom` which returns `memory::MainMemory`
[INFO] [stdout]    --> src/memory.rs:26:5
[INFO] [stdout]     |
[INFO] [stdout] 26  |     pub fn with_rom(rom: ROM) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following traits define an item `new`, perhaps you need to implement one of them:
[INFO] [stdout]             candidate #1: `UniformSampler`
[INFO] [stdout]             candidate #2: `rustyline::tty::Term`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `new` found for struct `memory::MainMemory` in the current scope
[INFO] [stdout]    --> src/memory.rs:193:35
[INFO] [stdout]     |
[INFO] [stdout] 17  | pub struct MainMemory {
[INFO] [stdout]     | --------------------- function or associated item `new` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 193 |         let mut mem = MainMemory::new();
[INFO] [stdout]     |                                   ^^^ function or associated item not found in `MainMemory`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `memory::MainMemory`, consider using `memory::MainMemory::with_rom` which returns `memory::MainMemory`
[INFO] [stdout]    --> src/memory.rs:26:5
[INFO] [stdout]     |
[INFO] [stdout] 26  |     pub fn with_rom(rom: ROM) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following traits define an item `new`, perhaps you need to implement one of them:
[INFO] [stdout]             candidate #1: `UniformSampler`
[INFO] [stdout]             candidate #2: `rustyline::tty::Term`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `new` found for struct `memory::MainMemory` in the current scope
[INFO] [stdout]    --> src/memory.rs:201:35
[INFO] [stdout]     |
[INFO] [stdout] 17  | pub struct MainMemory {
[INFO] [stdout]     | --------------------- function or associated item `new` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 201 |         let mut mem = MainMemory::new();
[INFO] [stdout]     |                                   ^^^ function or associated item not found in `MainMemory`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `memory::MainMemory`, consider using `memory::MainMemory::with_rom` which returns `memory::MainMemory`
[INFO] [stdout]    --> src/memory.rs:26:5
[INFO] [stdout]     |
[INFO] [stdout] 26  |     pub fn with_rom(rom: ROM) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following traits define an item `new`, perhaps you need to implement one of them:
[INFO] [stdout]             candidate #1: `UniformSampler`
[INFO] [stdout]             candidate #2: `rustyline::tty::Term`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/cli.rs:15:17
[INFO] [stdout]    |
[INFO] [stdout] 15 |         IOError(io::Error),
[INFO] [stdout]    |         ------- ^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CLIError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 15 |         IOError(()),
[INFO] [stdout]    |                 ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `debug` is never read
[INFO] [stdout]  --> src/watcher.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Watcher {
[INFO] [stdout]   |            ------- field in this struct
[INFO] [stdout] 5 |     pub verbose: bool,
[INFO] [stdout] 6 |     pub debug: bool,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/memory.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         &mem[inf_bound..sup_bound].copy_from_slice(rom.bytes());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let _ = &mem[inf_bound..sup_bound].copy_from_slice(rom.bytes());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/memory.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         &self.mem[0..5].copy_from_slice(&[0xF0, 0x90, 0x90, 0x90, 0xF0]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let _ = &self.mem[0..5].copy_from_slice(&[0xF0, 0x90, 0x90, 0x90, 0xF0]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/memory.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         &self.mem[5..10].copy_from_slice(&[0x20, 0x60, 0x20, 0x20, 0x70]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let _ = &self.mem[5..10].copy_from_slice(&[0x20, 0x60, 0x20, 0x20, 0x70]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/memory.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         &self.mem[10..15].copy_from_slice(&[0xF0, 0x10, 0xF0, 0x80, 0xF0]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let _ = &self.mem[10..15].copy_from_slice(&[0xF0, 0x10, 0xF0, 0x80, 0xF0]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/memory.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         &self.mem[15..20].copy_from_slice(&[0xF0, 0x10, 0xF0, 0x10, 0xF0]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let _ = &self.mem[15..20].copy_from_slice(&[0xF0, 0x10, 0xF0, 0x10, 0xF0]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/memory.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         &self.mem[20..25].copy_from_slice(&[0xF0, 0x10, 0xF0, 0x10, 0xF0]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let _ = &self.mem[20..25].copy_from_slice(&[0xF0, 0x10, 0xF0, 0x10, 0xF0]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `new` found for struct `memory::MainMemory` in the current scope
[INFO] [stdout]    --> src/memory.rs:208:31
[INFO] [stdout]     |
[INFO] [stdout] 17  | pub struct MainMemory {
[INFO] [stdout]     | --------------------- function or associated item `new` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 208 |         let mem = MainMemory::new();
[INFO] [stdout]     |                               ^^^ function or associated item not found in `MainMemory`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `memory::MainMemory`, consider using `memory::MainMemory::with_rom` which returns `memory::MainMemory`
[INFO] [stdout]    --> src/memory.rs:26:5
[INFO] [stdout]     |
[INFO] [stdout] 26  |     pub fn with_rom(rom: ROM) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following traits define an item `new`, perhaps you need to implement one of them:
[INFO] [stdout]             candidate #1: `UniformSampler`
[INFO] [stdout]             candidate #2: `rustyline::tty::Term`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/memory.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         &self.mem[25..30].copy_from_slice(&[0xF0, 0x80, 0xF0, 0x10, 0xF0]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let _ = &self.mem[25..30].copy_from_slice(&[0xF0, 0x80, 0xF0, 0x10, 0xF0]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/memory.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |         &self.mem[30..35].copy_from_slice(&[0xF0, 0x80, 0xF0, 0x90, 0xF0]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let _ = &self.mem[30..35].copy_from_slice(&[0xF0, 0x80, 0xF0, 0x90, 0xF0]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/memory.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         &self.mem[35..40].copy_from_slice(&[0xF0, 0x10, 0x20, 0x40, 0x40]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let _ = &self.mem[35..40].copy_from_slice(&[0xF0, 0x10, 0x20, 0x40, 0x40]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/memory.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |         &self.mem[40..45].copy_from_slice(&[0xF0, 0x90, 0xF0, 0x90, 0xF0]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let _ = &self.mem[40..45].copy_from_slice(&[0xF0, 0x90, 0xF0, 0x90, 0xF0]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/memory.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         &self.mem[45..50].copy_from_slice(&[0xF0, 0x90, 0xF0, 0x10, 0xF0]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let _ = &self.mem[45..50].copy_from_slice(&[0xF0, 0x90, 0xF0, 0x10, 0xF0]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/memory.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         &self.mem[50..55].copy_from_slice(&[0xF0, 0x90, 0xF0, 0x90, 0x90]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let _ = &self.mem[50..55].copy_from_slice(&[0xF0, 0x90, 0xF0, 0x90, 0x90]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/memory.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |         &self.mem[55..60].copy_from_slice(&[0xE0, 0x90, 0xE0, 0x90, 0xE0]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 79 |         let _ = &self.mem[55..60].copy_from_slice(&[0xE0, 0x90, 0xE0, 0x90, 0xE0]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/memory.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         &self.mem[60..65].copy_from_slice(&[0xF0, 0x80, 0x80, 0x80, 0xF0]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let _ = &self.mem[60..65].copy_from_slice(&[0xF0, 0x80, 0x80, 0x80, 0xF0]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/memory.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         &self.mem[65..70].copy_from_slice(&[0xE0, 0x90, 0x90, 0x90, 0xE0]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let _ = &self.mem[65..70].copy_from_slice(&[0xE0, 0x90, 0x90, 0x90, 0xE0]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/memory.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         &self.mem[70..75].copy_from_slice(&[0xF0, 0x80, 0xF0, 0x80, 0xF0]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 88 |         let _ = &self.mem[70..75].copy_from_slice(&[0xF0, 0x80, 0xF0, 0x80, 0xF0]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/memory.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |         &self.mem[75..80].copy_from_slice(&[0xF0, 0x80, 0xF0, 0x80, 0x80]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let _ = &self.mem[75..80].copy_from_slice(&[0xF0, 0x80, 0xF0, 0x80, 0x80]);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chip-8` (bin "chip-8" test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "ff3556bc57bdc5b810a90d8dd7debe6d1773d5c1323fd7a11e153def877c9115", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff3556bc57bdc5b810a90d8dd7debe6d1773d5c1323fd7a11e153def877c9115", kill_on_drop: false }`
[INFO] [stdout] ff3556bc57bdc5b810a90d8dd7debe6d1773d5c1323fd7a11e153def877c9115