[INFO] updating cached repository npdawson/rustboy
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/npdawson/rustboy
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/npdawson/rustboy" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/npdawson/rustboy"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/npdawson/rustboy'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/npdawson/rustboy" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/npdawson/rustboy"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/npdawson/rustboy'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 23f7e43c6f6867bc3275c886322e3a81ed0d4707
[INFO] sha for GitHub repo npdawson/rustboy: 23f7e43c6f6867bc3275c886322e3a81ed0d4707
[INFO] validating manifest of npdawson/rustboy on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of npdawson/rustboy on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing npdawson/rustboy
[INFO] finished frobbing npdawson/rustboy
[INFO] frobbed toml for npdawson/rustboy written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/npdawson/rustboy/Cargo.toml
[INFO] started frobbing npdawson/rustboy
[INFO] finished frobbing npdawson/rustboy
[INFO] frobbed toml for npdawson/rustboy written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/npdawson/rustboy/Cargo.toml
[INFO] crate npdawson/rustboy already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/npdawson/rustboy/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking npdawson/rustboy against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-3/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/npdawson/rustboy:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d2087d57a91ef6046412712bf7c3da7a23c18a24f501a6cd8c5e9b4b6ec6d3ba
[INFO] running `"docker" "start" "-a" "d2087d57a91ef6046412712bf7c3da7a23c18a24f501a6cd8c5e9b4b6ec6d3ba"`
[INFO] [stderr]     Checking rustboy v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variant `FF_C` should have an upper camel case name
[INFO] [stderr]   --> src/dmg/cpu/opcode.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     FF_C,
[INFO] [stderr]    |     ^^^^ help: convert the identifier to upper camel case: `FfC`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Cow`
[INFO] [stderr]  --> src/debugger/mod.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::borrow::Cow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `dmg::cpu::Instruction`
[INFO] [stderr]  --> src/debugger/mod.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use dmg::cpu::Instruction;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `dmg::cpu::Opcode::*`
[INFO] [stderr]  --> src/debugger/mod.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use dmg::cpu::Opcode::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `dmg::mem_map::Addr::*`
[INFO] [stderr]   --> src/debugger/mod.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use dmg::mem_map::Addr::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread::sleep`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::thread::sleep;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc::channel`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::sync::mpsc::channel;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant `FF_C` should have an upper camel case name
[INFO] [stderr]   --> src/dmg/cpu/opcode.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     FF_C,
[INFO] [stderr]    |     ^^^^ help: convert the identifier to upper camel case: `FfC`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Cow`
[INFO] [stderr]  --> src/debugger/mod.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::borrow::Cow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `dmg::cpu::Instruction`
[INFO] [stderr]  --> src/debugger/mod.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use dmg::cpu::Instruction;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `dmg::cpu::Opcode::*`
[INFO] [stderr]  --> src/debugger/mod.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use dmg::cpu::Opcode::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `dmg::mem_map::Addr::*`
[INFO] [stderr]   --> src/debugger/mod.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use dmg::mem_map::Addr::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread::sleep`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::thread::sleep;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc::channel`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::sync::mpsc::channel;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/dmg/cpu/instruction.rs:628:9
[INFO] [stderr]     |
[INFO] [stderr] 628 |         _ => unreachable!()
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/dmg/cpu/instruction.rs:628:9
[INFO] [stderr]     |
[INFO] [stderr] 628 |         _ => unreachable!()
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pitch`
[INFO] [stderr]   --> src/main.rs:83:53
[INFO] [stderr]    |
[INFO] [stderr] 83 |         texture.with_lock(None, |buffer: &mut [u8], pitch: usize| {
[INFO] [stderr]    |                                                     ^^^^^ help: consider prefixing with an underscore: `_pitch`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cycles`
[INFO] [stderr]    --> src/dmg/cpu/cpu.rs:367:21
[INFO] [stderr]     |
[INFO] [stderr] 367 |                 let cycles = self.execute(instr, interconnect);
[INFO] [stderr]     |                     ^^^^^^ help: consider prefixing with an underscore: `_cycles`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `offset`
[INFO] [stderr]    --> src/dmg/interconnect.rs:255:23
[INFO] [stderr]     |
[INFO] [stderr] 255 |             Addr::Rom(offset) => panic!("Write word to MBC not supported"),
[INFO] [stderr]     |                       ^^^^^^ help: consider prefixing with an underscore: `_offset`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `offset`
[INFO] [stderr]    --> src/dmg/interconnect.rs:327:24
[INFO] [stderr]     |
[INFO] [stderr] 327 |             Addr::Vram(offset) => panic!("dma from vram not implemented"),
[INFO] [stderr]     |                        ^^^^^^ help: consider prefixing with an underscore: `_offset`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `addr`
[INFO] [stderr]   --> src/debugger/mod.rs:55:17
[INFO] [stderr]    |
[INFO] [stderr] 55 |             let addr = mem_map::map_addr(current_pc);
[INFO] [stderr]    |                 ^^^^ help: consider prefixing with an underscore: `_addr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pitch`
[INFO] [stderr]   --> src/main.rs:83:53
[INFO] [stderr]    |
[INFO] [stderr] 83 |         texture.with_lock(None, |buffer: &mut [u8], pitch: usize| {
[INFO] [stderr]    |                                                     ^^^^^ help: consider prefixing with an underscore: `_pitch`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cycles`
[INFO] [stderr]    --> src/dmg/cpu/cpu.rs:367:21
[INFO] [stderr]     |
[INFO] [stderr] 367 |                 let cycles = self.execute(instr, interconnect);
[INFO] [stderr]     |                     ^^^^^^ help: consider prefixing with an underscore: `_cycles`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `offset`
[INFO] [stderr]    --> src/dmg/interconnect.rs:255:23
[INFO] [stderr]     |
[INFO] [stderr] 255 |             Addr::Rom(offset) => panic!("Write word to MBC not supported"),
[INFO] [stderr]     |                       ^^^^^^ help: consider prefixing with an underscore: `_offset`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `offset`
[INFO] [stderr]    --> src/dmg/interconnect.rs:327:24
[INFO] [stderr]     |
[INFO] [stderr] 327 |             Addr::Vram(offset) => panic!("dma from vram not implemented"),
[INFO] [stderr]     |                        ^^^^^^ help: consider prefixing with an underscore: `_offset`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `addr`
[INFO] [stderr]   --> src/debugger/mod.rs:55:17
[INFO] [stderr]    |
[INFO] [stderr] 55 |             let addr = mem_map::map_addr(current_pc);
[INFO] [stderr]    |                 ^^^^ help: consider prefixing with an underscore: `_addr`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/dmg/cpu/cpu.rs:194:13
[INFO] [stderr]     |
[INFO] [stderr] 194 |         let mut value = match op {
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/dmg/cpu/cpu.rs:194:13
[INFO] [stderr]     |
[INFO] [stderr] 194 |         let mut value = match op {
[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: method is never used: `cpu`
[INFO] [stderr]   --> src/dmg/dmg.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn cpu(&self) -> &Cpu {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `interconnect`
[INFO] [stderr]   --> src/dmg/dmg.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn interconnect(&self) -> &Interconnect {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `current_pc`
[INFO] [stderr]   --> src/dmg/cpu/cpu.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn current_pc(&self) -> u16 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dma_from_vram`
[INFO] [stderr]    --> src/dmg/ppu.rs:256:5
[INFO] [stderr]     |
[INFO] [stderr] 256 |     pub fn dma_from_vram(&mut self, offset: usize) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `dma_buffer`
[INFO] [stderr]   --> src/dmg/interconnect.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     dma_buffer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Debugger`
[INFO] [stderr]   --> src/debugger/mod.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub struct Debugger {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/debugger/mod.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn new(dmg: Dmg) -> Debugger {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run`
[INFO] [stderr]   --> src/debugger/mod.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn run(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `step`
[INFO] [stderr]   --> src/debugger/mod.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn step(&mut self, count: usize) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_stdin`
[INFO] [stderr]   --> src/debugger/mod.rs:68:1
[INFO] [stderr]    |
[INFO] [stderr] 68 | fn read_stdin() -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `cpu`
[INFO] [stderr]   --> src/dmg/dmg.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn cpu(&self) -> &Cpu {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `interconnect`
[INFO] [stderr]   --> src/dmg/dmg.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn interconnect(&self) -> &Interconnect {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `current_pc`
[INFO] [stderr]   --> src/dmg/cpu/cpu.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn current_pc(&self) -> u16 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dma_from_vram`
[INFO] [stderr]    --> src/dmg/ppu.rs:256:5
[INFO] [stderr]     |
[INFO] [stderr] 256 |     pub fn dma_from_vram(&mut self, offset: usize) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `dma_buffer`
[INFO] [stderr]   --> src/dmg/interconnect.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     dma_buffer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Debugger`
[INFO] [stderr]   --> src/debugger/mod.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub struct Debugger {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/debugger/mod.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn new(dmg: Dmg) -> Debugger {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run`
[INFO] [stderr]   --> src/debugger/mod.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn run(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `step`
[INFO] [stderr]   --> src/debugger/mod.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn step(&mut self, count: usize) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_stdin`
[INFO] [stderr]   --> src/debugger/mod.rs:68:1
[INFO] [stderr]    |
[INFO] [stderr] 68 | fn read_stdin() -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.44s
[INFO] running `"docker" "inspect" "d2087d57a91ef6046412712bf7c3da7a23c18a24f501a6cd8c5e9b4b6ec6d3ba"`
[INFO] running `"docker" "rm" "-f" "d2087d57a91ef6046412712bf7c3da7a23c18a24f501a6cd8c5e9b4b6ec6d3ba"`
[INFO] [stdout] d2087d57a91ef6046412712bf7c3da7a23c18a24f501a6cd8c5e9b4b6ec6d3ba