[INFO] cloning repository https://github.com/oem/gg-gb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oem/gg-gb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foem%2Fgg-gb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foem%2Fgg-gb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a8e78af357886061aaf26bafc3694e0173d08a39
[INFO] checking oem/gg-gb against master#bd71213cf0a765705e7d72a099151bd4eb465ccb for pr-123864
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foem%2Fgg-gb" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oem/gg-gb on toolchain bd71213cf0a765705e7d72a099151bd4eb465ccb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd71213cf0a765705e7d72a099151bd4eb465ccb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/oem/gg-gb
[INFO] finished tweaking git repo https://github.com/oem/gg-gb
[INFO] tweaked toml for git repo https://github.com/oem/gg-gb written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/oem/gg-gb 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" "+bd71213cf0a765705e7d72a099151bd4eb465ccb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking oem/gg-gb against try#c0f799aeda763fc507814da0dc46c2dde7ca9133 for pr-123864
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foem%2Fgg-gb" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oem/gg-gb on toolchain c0f799aeda763fc507814da0dc46c2dde7ca9133
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c0f799aeda763fc507814da0dc46c2dde7ca9133" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/oem/gg-gb
[INFO] finished tweaking git repo https://github.com/oem/gg-gb
[INFO] tweaked toml for git repo https://github.com/oem/gg-gb written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/oem/gg-gb 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" "+c0f799aeda763fc507814da0dc46c2dde7ca9133" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking oem/gg-gb against try#c0f799aeda763fc507814da0dc46c2dde7ca9133 for pr-123864
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foem%2Fgg-gb" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oem/gg-gb on toolchain c0f799aeda763fc507814da0dc46c2dde7ca9133
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c0f799aeda763fc507814da0dc46c2dde7ca9133" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/oem/gg-gb
[INFO] finished tweaking git repo https://github.com/oem/gg-gb
[INFO] tweaked toml for git repo https://github.com/oem/gg-gb written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/oem/gg-gb 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" "+c0f799aeda763fc507814da0dc46c2dde7ca9133" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+c0f799aeda763fc507814da0dc46c2dde7ca9133" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aeda9852aee4e066dbcb877c1ab305bd26e8364bfb3f44a63679a9deb42d135e
[INFO] running `Command { std: "docker" "start" "-a" "aeda9852aee4e066dbcb877c1ab305bd26e8364bfb3f44a63679a9deb42d135e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aeda9852aee4e066dbcb877c1ab305bd26e8364bfb3f44a63679a9deb42d135e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aeda9852aee4e066dbcb877c1ab305bd26e8364bfb3f44a63679a9deb42d135e", kill_on_drop: false }`
[INFO] [stdout] aeda9852aee4e066dbcb877c1ab305bd26e8364bfb3f44a63679a9deb42d135e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+c0f799aeda763fc507814da0dc46c2dde7ca9133" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1dd1199fa2e019aab66ca31ead39db262b819ef4ae998a47c8c3137ca9b052d8
[INFO] running `Command { std: "docker" "start" "-a" "1dd1199fa2e019aab66ca31ead39db262b819ef4ae998a47c8c3137ca9b052d8", kill_on_drop: false }`
[INFO] [stderr]     Checking gg-gb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/instructions/mod.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |             _ => { /* TODO: implement more instructions */ }
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/instructions/mod.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |         let mut instruction_byte = self.bus.read_byte(self.pc);
[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: struct `CPU` is never constructed
[INFO] [stdout]  --> src/instructions/mod.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct CPU {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MemoryBus` is never constructed
[INFO] [stdout]  --> src/instructions/mod.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct MemoryBus {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `read_byte` is never used
[INFO] [stdout]   --> src/instructions/mod.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl MemoryBus {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 14 |     fn read_byte(&self, address: u16) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Instruction` is never used
[INFO] [stdout]   --> src/instructions/mod.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 19 | enum Instruction {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_byte` is never used
[INFO] [stdout]   --> src/instructions/mod.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Instruction {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 25 |     fn from_byte(byte: u8) -> Option<Instruction> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IncDecTarget` is never used
[INFO] [stdout]   --> src/instructions/mod.rs:33:6
[INFO] [stdout]    |
[INFO] [stdout] 33 | enum IncDecTarget {
[INFO] [stdout]    |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ArithmeticTarget` is never used
[INFO] [stdout]   --> src/instructions/mod.rs:38:6
[INFO] [stdout]    |
[INFO] [stdout] 38 | enum ArithmeticTarget {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `execute`, `step`, and `add` are never used
[INFO] [stdout]   --> src/instructions/mod.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl CPU {
[INFO] [stdout]    | -------- methods in this implementation
[INFO] [stdout] 50 |     fn execute(&mut self, instruction: Instruction) -> u16 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     fn step(&mut self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 86 |     fn add(&mut self, value: u8) -> u8 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/registers/registers.rs:5:9
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub struct Registers {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 5  |     pub a: u8,
[INFO] [stdout]    |         ^
[INFO] [stdout] 6  |     pub b: u8,
[INFO] [stdout]    |         ^
[INFO] [stdout] 7  |     pub c: u8,
[INFO] [stdout]    |         ^
[INFO] [stdout] 8  |     pub d: u8,
[INFO] [stdout]    |         ^
[INFO] [stdout] 9  |     pub e: u8,
[INFO] [stdout]    |         ^
[INFO] [stdout] 10 |     pub f: FlagsRegister,
[INFO] [stdout]    |         ^
[INFO] [stdout] 11 |     pub h: u8,
[INFO] [stdout]    |         ^
[INFO] [stdout] 12 |     pub l: u8,
[INFO] [stdout]    |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_bc`, `set_bc`, `get_de`, and `set_de` are never used
[INFO] [stdout]   --> src/registers/registers.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Registers {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 16 |     pub fn get_bc(&self) -> u16 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn set_bc(&mut self, value: u16) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn get_de(&self) -> u16 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn set_de(&mut self, value: u16) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::num::<impl u16>::wrapping_add` that must be used
[INFO] [stdout]   --> src/instructions/mod.rs:58:25
[INFO] [stdout]    |
[INFO] [stdout] 58 |                         self.pc.wrapping_add(1);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this returns the result of the operation, without modifying the original
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |                         let _ = self.pc.wrapping_add(1);
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/instructions/mod.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |             _ => { /* TODO: implement more instructions */ }
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/instructions/mod.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |         let mut instruction_byte = self.bus.read_byte(self.pc);
[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: field `bus` is never read
[INFO] [stdout]  --> src/instructions/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct CPU {
[INFO] [stdout]   |        --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 6 |     bus: MemoryBus,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `memory` is never read
[INFO] [stdout]   --> src/instructions/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct MemoryBus {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 10 |     memory: [u8; 0xFFFF],
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `read_byte` is never used
[INFO] [stdout]   --> src/instructions/mod.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl MemoryBus {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 14 |     fn read_byte(&self, address: u16) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `INC` is never constructed
[INFO] [stdout]   --> src/instructions/mod.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | enum Instruction {
[INFO] [stdout]    |      ----------- variant in this enum
[INFO] [stdout] 20 |     ADD(ArithmeticTarget),
[INFO] [stdout] 21 |     INC(IncDecTarget),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_byte` is never used
[INFO] [stdout]   --> src/instructions/mod.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Instruction {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 25 |     fn from_byte(byte: u8) -> Option<Instruction> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `BC` and `DE` are never constructed
[INFO] [stdout]   --> src/instructions/mod.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | enum IncDecTarget {
[INFO] [stdout]    |      ------------ variants in this enum
[INFO] [stdout] 34 |     BC,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 35 |     DE,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/instructions/mod.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | enum ArithmeticTarget {
[INFO] [stdout]    |      ---------------- variants in this enum
[INFO] [stdout] 39 |     A,
[INFO] [stdout]    |     ^
[INFO] [stdout] 40 |     B,
[INFO] [stdout]    |     ^
[INFO] [stdout] 41 |     C,
[INFO] [stdout] 42 |     D,
[INFO] [stdout]    |     ^
[INFO] [stdout] 43 |     E,
[INFO] [stdout]    |     ^
[INFO] [stdout] 44 |     F,
[INFO] [stdout]    |     ^
[INFO] [stdout] 45 |     H,
[INFO] [stdout]    |     ^
[INFO] [stdout] 46 |     L,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `step` is never used
[INFO] [stdout]   --> src/instructions/mod.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl CPU {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 74 |     fn step(&mut self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `h` and `l` are never read
[INFO] [stdout]   --> src/registers/registers.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub struct Registers {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 11 |     pub h: u8,
[INFO] [stdout]    |         ^
[INFO] [stdout] 12 |     pub l: u8,
[INFO] [stdout]    |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::num::<impl u16>::wrapping_add` that must be used
[INFO] [stdout]   --> src/instructions/mod.rs:58:25
[INFO] [stdout]    |
[INFO] [stdout] 58 |                         self.pc.wrapping_add(1);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this returns the result of the operation, without modifying the original
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |                         let _ = self.pc.wrapping_add(1);
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "1dd1199fa2e019aab66ca31ead39db262b819ef4ae998a47c8c3137ca9b052d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dd1199fa2e019aab66ca31ead39db262b819ef4ae998a47c8c3137ca9b052d8", kill_on_drop: false }`
[INFO] [stdout] 1dd1199fa2e019aab66ca31ead39db262b819ef4ae998a47c8c3137ca9b052d8