[INFO] cloning repository https://github.com/wenhaozhao/chip-8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wenhaozhao/chip-8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwenhaozhao%2Fchip-8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwenhaozhao%2Fchip-8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d8e9da4705a1830a7ecfaeecb1c94421e583d690
[INFO] checking wenhaozhao/chip-8 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwenhaozhao%2Fchip-8" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wenhaozhao/chip-8 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wenhaozhao/chip-8
[INFO] finished tweaking git repo https://github.com/wenhaozhao/chip-8
[INFO] tweaked toml for git repo https://github.com/wenhaozhao/chip-8 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/wenhaozhao/chip-8 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9bcca55a2c798671ba6aaa9511c680f498e529e368a0736435c5f818030ec1f6
[INFO] running `Command { std: "docker" "start" "-a" "9bcca55a2c798671ba6aaa9511c680f498e529e368a0736435c5f818030ec1f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bcca55a2c798671ba6aaa9511c680f498e529e368a0736435c5f818030ec1f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bcca55a2c798671ba6aaa9511c680f498e529e368a0736435c5f818030ec1f6", kill_on_drop: false }`
[INFO] [stdout] 9bcca55a2c798671ba6aaa9511c680f498e529e368a0736435c5f818030ec1f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] deb22dd8b816477030387056bd5d5d9686c08afeccea05ea2021f60431229b21
[INFO] running `Command { std: "docker" "start" "-a" "deb22dd8b816477030387056bd5d5d9686c08afeccea05ea2021f60431229b21", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling sdl2 v0.35.2
[INFO] [stderr]    Compiling sdl2-sys v0.35.2
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/chip8/cpu.rs:20:37
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub const MEMORY_PROGRAM_LEN: u16 = (MEMORY_PROGRAM_END - MEMORY_PROGRAM_BASE);
[INFO] [stdout]    |                                     ^                                        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 20 - pub const MEMORY_PROGRAM_LEN: u16 = (MEMORY_PROGRAM_END - MEMORY_PROGRAM_BASE);
[INFO] [stdout] 20 + pub const MEMORY_PROGRAM_LEN: u16 = MEMORY_PROGRAM_END - MEMORY_PROGRAM_BASE;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8/cpu.rs:369:43
[INFO] [stdout]     |
[INFO] [stdout] 369 |                         self.reg_index += (self.registers[x] as u16);
[INFO] [stdout]     |                                           ^                        ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 369 -                         self.reg_index += (self.registers[x] as u16);
[INFO] [stdout] 369 +                         self.reg_index += self.registers[x] as u16;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8/cpu.rs:378:64
[INFO] [stdout]     |
[INFO] [stdout] 378 |                         self.memory[self.reg_index as usize] = (x / 100);
[INFO] [stdout]     |                                                                ^       ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 378 -                         self.memory[self.reg_index as usize] = (x / 100);
[INFO] [stdout] 378 +                         self.memory[self.reg_index as usize] = x / 100;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8/cpu.rs:379:70
[INFO] [stdout]     |
[INFO] [stdout] 379 |                         self.memory[(self.reg_index + 1) as usize] = ((x / 10) % 10);
[INFO] [stdout]     |                                                                      ^             ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 379 -                         self.memory[(self.reg_index + 1) as usize] = ((x / 10) % 10);
[INFO] [stdout] 379 +                         self.memory[(self.reg_index + 1) as usize] = (x / 10) % 10;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8/cpu.rs:380:70
[INFO] [stdout]     |
[INFO] [stdout] 380 |                         self.memory[(self.reg_index + 2) as usize] = (x % 10);
[INFO] [stdout]     |                                                                      ^      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 380 -                         self.memory[(self.reg_index + 2) as usize] = (x % 10);
[INFO] [stdout] 380 +                         self.memory[(self.reg_index + 2) as usize] = x % 10;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/chip8/cpu.rs:20:37
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub const MEMORY_PROGRAM_LEN: u16 = (MEMORY_PROGRAM_END - MEMORY_PROGRAM_BASE);
[INFO] [stdout]    |                                     ^                                        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 20 - pub const MEMORY_PROGRAM_LEN: u16 = (MEMORY_PROGRAM_END - MEMORY_PROGRAM_BASE);
[INFO] [stdout] 20 + pub const MEMORY_PROGRAM_LEN: u16 = MEMORY_PROGRAM_END - MEMORY_PROGRAM_BASE;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8/cpu.rs:369:43
[INFO] [stdout]     |
[INFO] [stdout] 369 |                         self.reg_index += (self.registers[x] as u16);
[INFO] [stdout]     |                                           ^                        ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 369 -                         self.reg_index += (self.registers[x] as u16);
[INFO] [stdout] 369 +                         self.reg_index += self.registers[x] as u16;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8/cpu.rs:378:64
[INFO] [stdout]     |
[INFO] [stdout] 378 |                         self.memory[self.reg_index as usize] = (x / 100);
[INFO] [stdout]     |                                                                ^       ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 378 -                         self.memory[self.reg_index as usize] = (x / 100);
[INFO] [stdout] 378 +                         self.memory[self.reg_index as usize] = x / 100;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8/cpu.rs:379:70
[INFO] [stdout]     |
[INFO] [stdout] 379 |                         self.memory[(self.reg_index + 1) as usize] = ((x / 10) % 10);
[INFO] [stdout]     |                                                                      ^             ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 379 -                         self.memory[(self.reg_index + 1) as usize] = ((x / 10) % 10);
[INFO] [stdout] 379 +                         self.memory[(self.reg_index + 1) as usize] = (x / 10) % 10;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8/cpu.rs:380:70
[INFO] [stdout]     |
[INFO] [stdout] 380 |                         self.memory[(self.reg_index + 2) as usize] = (x % 10);
[INFO] [stdout]     |                                                                      ^      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 380 -                         self.memory[(self.reg_index + 2) as usize] = (x % 10);
[INFO] [stdout] 380 +                         self.memory[(self.reg_index + 2) as usize] = x % 10;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sepc`
[INFO] [stdout]   --> src/chip8/sound.rs:41:14
[INFO] [stdout]    |
[INFO] [stdout] 41 |             |sepc| {
[INFO] [stdout]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_sepc`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sepc`
[INFO] [stdout]   --> src/chip8/sound.rs:41:14
[INFO] [stdout]    |
[INFO] [stdout] 41 |             |sepc| {
[INFO] [stdout]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_sepc`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Opcode` is more private than the item `CPU::exec_opcode`
[INFO] [stdout]    --> src/chip8/cpu.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 180 |     pub fn exec_opcode(&mut self, opcode: &Opcode) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `CPU::exec_opcode` is reachable at visibility `pub(crate)`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `Opcode` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/chip8/cpu.rs:65:1
[INFO] [stdout]     |
[INFO] [stdout] 65  | struct Opcode(u16);
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEMORY_FONT_START` is never used
[INFO] [stdout]   --> src/chip8/cpu.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const MEMORY_FONT_START: u16 = 0x0000;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEMORY_FONT_END` is never used
[INFO] [stdout]   --> src/chip8/cpu.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | const MEMORY_FONT_END: u16 = 0x01FF;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEMORY_PROGRAM_END` is never used
[INFO] [stdout]   --> src/chip8/cpu.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const MEMORY_PROGRAM_END: u16 = 0x0FFF;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEMORY_PROGRAM_LEN` is never used
[INFO] [stdout]   --> src/chip8/cpu.rs:20:11
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub const MEMORY_PROGRAM_LEN: u16 = (MEMORY_PROGRAM_END - MEMORY_PROGRAM_BASE);
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `frame_buffer` is never read
[INFO] [stdout]   --> src/chip8/cpu.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub struct CPU {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 54 |     frame_buffer: [[u8; 64]; 32],
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Opcode` is more private than the item `CPU::exec_opcode`
[INFO] [stdout]    --> src/chip8/cpu.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 180 |     pub fn exec_opcode(&mut self, opcode: &Opcode) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `CPU::exec_opcode` is reachable at visibility `pub(crate)`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `Opcode` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/chip8/cpu.rs:65:1
[INFO] [stdout]     |
[INFO] [stdout] 65  | struct Opcode(u16);
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEMORY_FONT_START` is never used
[INFO] [stdout]   --> src/chip8/cpu.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const MEMORY_FONT_START: u16 = 0x0000;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEMORY_FONT_END` is never used
[INFO] [stdout]   --> src/chip8/cpu.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | const MEMORY_FONT_END: u16 = 0x01FF;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEMORY_PROGRAM_END` is never used
[INFO] [stdout]   --> src/chip8/cpu.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const MEMORY_PROGRAM_END: u16 = 0x0FFF;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEMORY_PROGRAM_LEN` is never used
[INFO] [stdout]   --> src/chip8/cpu.rs:20:11
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub const MEMORY_PROGRAM_LEN: u16 = (MEMORY_PROGRAM_END - MEMORY_PROGRAM_BASE);
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `frame_buffer` is never read
[INFO] [stdout]   --> src/chip8/cpu.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub struct CPU {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 54 |     frame_buffer: [[u8; 64]; 32],
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.15s
[INFO] running `Command { std: "docker" "inspect" "deb22dd8b816477030387056bd5d5d9686c08afeccea05ea2021f60431229b21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "deb22dd8b816477030387056bd5d5d9686c08afeccea05ea2021f60431229b21", kill_on_drop: false }`
[INFO] [stdout] deb22dd8b816477030387056bd5d5d9686c08afeccea05ea2021f60431229b21
[INFO] checking wenhaozhao/chip-8 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwenhaozhao%2Fchip-8" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wenhaozhao/chip-8 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wenhaozhao/chip-8
[INFO] finished tweaking git repo https://github.com/wenhaozhao/chip-8
[INFO] tweaked toml for git repo https://github.com/wenhaozhao/chip-8 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/wenhaozhao/chip-8 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 817a259f4de74dde7e602ec61147743debbb33897d24631b60b8df9972cab27b
[INFO] running `Command { std: "docker" "start" "-a" "817a259f4de74dde7e602ec61147743debbb33897d24631b60b8df9972cab27b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "817a259f4de74dde7e602ec61147743debbb33897d24631b60b8df9972cab27b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "817a259f4de74dde7e602ec61147743debbb33897d24631b60b8df9972cab27b", kill_on_drop: false }`
[INFO] [stdout] 817a259f4de74dde7e602ec61147743debbb33897d24631b60b8df9972cab27b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1a09344e374134bc659d5dc9dbed8206867ce25318fc3e2bbefa817c65d651c
[INFO] running `Command { std: "docker" "start" "-a" "d1a09344e374134bc659d5dc9dbed8206867ce25318fc3e2bbefa817c65d651c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling sdl2 v0.35.2
[INFO] [stderr]    Compiling sdl2-sys v0.35.2
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/chip8/cpu.rs:20:37
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub const MEMORY_PROGRAM_LEN: u16 = (MEMORY_PROGRAM_END - MEMORY_PROGRAM_BASE);
[INFO] [stdout]    |                                     ^                                        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 20 - pub const MEMORY_PROGRAM_LEN: u16 = (MEMORY_PROGRAM_END - MEMORY_PROGRAM_BASE);
[INFO] [stdout] 20 + pub const MEMORY_PROGRAM_LEN: u16 = MEMORY_PROGRAM_END - MEMORY_PROGRAM_BASE;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8/cpu.rs:369:43
[INFO] [stdout]     |
[INFO] [stdout] 369 |                         self.reg_index += (self.registers[x] as u16);
[INFO] [stdout]     |                                           ^                        ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 369 -                         self.reg_index += (self.registers[x] as u16);
[INFO] [stdout] 369 +                         self.reg_index += self.registers[x] as u16;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8/cpu.rs:378:64
[INFO] [stdout]     |
[INFO] [stdout] 378 |                         self.memory[self.reg_index as usize] = (x / 100);
[INFO] [stdout]     |                                                                ^       ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 378 -                         self.memory[self.reg_index as usize] = (x / 100);
[INFO] [stdout] 378 +                         self.memory[self.reg_index as usize] = x / 100;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8/cpu.rs:379:70
[INFO] [stdout]     |
[INFO] [stdout] 379 |                         self.memory[(self.reg_index + 1) as usize] = ((x / 10) % 10);
[INFO] [stdout]     |                                                                      ^             ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 379 -                         self.memory[(self.reg_index + 1) as usize] = ((x / 10) % 10);
[INFO] [stdout] 379 +                         self.memory[(self.reg_index + 1) as usize] = (x / 10) % 10;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8/cpu.rs:380:70
[INFO] [stdout]     |
[INFO] [stdout] 380 |                         self.memory[(self.reg_index + 2) as usize] = (x % 10);
[INFO] [stdout]     |                                                                      ^      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 380 -                         self.memory[(self.reg_index + 2) as usize] = (x % 10);
[INFO] [stdout] 380 +                         self.memory[(self.reg_index + 2) as usize] = x % 10;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/chip8/cpu.rs:20:37
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub const MEMORY_PROGRAM_LEN: u16 = (MEMORY_PROGRAM_END - MEMORY_PROGRAM_BASE);
[INFO] [stdout]    |                                     ^                                        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 20 - pub const MEMORY_PROGRAM_LEN: u16 = (MEMORY_PROGRAM_END - MEMORY_PROGRAM_BASE);
[INFO] [stdout] 20 + pub const MEMORY_PROGRAM_LEN: u16 = MEMORY_PROGRAM_END - MEMORY_PROGRAM_BASE;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8/cpu.rs:369:43
[INFO] [stdout]     |
[INFO] [stdout] 369 |                         self.reg_index += (self.registers[x] as u16);
[INFO] [stdout]     |                                           ^                        ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 369 -                         self.reg_index += (self.registers[x] as u16);
[INFO] [stdout] 369 +                         self.reg_index += self.registers[x] as u16;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8/cpu.rs:378:64
[INFO] [stdout]     |
[INFO] [stdout] 378 |                         self.memory[self.reg_index as usize] = (x / 100);
[INFO] [stdout]     |                                                                ^       ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 378 -                         self.memory[self.reg_index as usize] = (x / 100);
[INFO] [stdout] 378 +                         self.memory[self.reg_index as usize] = x / 100;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8/cpu.rs:379:70
[INFO] [stdout]     |
[INFO] [stdout] 379 |                         self.memory[(self.reg_index + 1) as usize] = ((x / 10) % 10);
[INFO] [stdout]     |                                                                      ^             ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 379 -                         self.memory[(self.reg_index + 1) as usize] = ((x / 10) % 10);
[INFO] [stdout] 379 +                         self.memory[(self.reg_index + 1) as usize] = (x / 10) % 10;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8/cpu.rs:380:70
[INFO] [stdout]     |
[INFO] [stdout] 380 |                         self.memory[(self.reg_index + 2) as usize] = (x % 10);
[INFO] [stdout]     |                                                                      ^      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 380 -                         self.memory[(self.reg_index + 2) as usize] = (x % 10);
[INFO] [stdout] 380 +                         self.memory[(self.reg_index + 2) as usize] = x % 10;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sepc`
[INFO] [stdout]   --> src/chip8/sound.rs:41:14
[INFO] [stdout]    |
[INFO] [stdout] 41 |             |sepc| {
[INFO] [stdout]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_sepc`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Opcode` is more private than the item `CPU::exec_opcode`
[INFO] [stdout]    --> src/chip8/cpu.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 180 |     pub fn exec_opcode(&mut self, opcode: &Opcode) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `CPU::exec_opcode` is reachable at visibility `pub(crate)`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `Opcode` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/chip8/cpu.rs:65:1
[INFO] [stdout]     |
[INFO] [stdout] 65  | struct Opcode(u16);
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEMORY_FONT_START` is never used
[INFO] [stdout]   --> src/chip8/cpu.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const MEMORY_FONT_START: u16 = 0x0000;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEMORY_FONT_END` is never used
[INFO] [stdout]   --> src/chip8/cpu.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | const MEMORY_FONT_END: u16 = 0x01FF;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEMORY_PROGRAM_END` is never used
[INFO] [stdout]   --> src/chip8/cpu.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const MEMORY_PROGRAM_END: u16 = 0x0FFF;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEMORY_PROGRAM_LEN` is never used
[INFO] [stdout]   --> src/chip8/cpu.rs:20:11
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub const MEMORY_PROGRAM_LEN: u16 = (MEMORY_PROGRAM_END - MEMORY_PROGRAM_BASE);
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `frame_buffer` is never read
[INFO] [stdout]   --> src/chip8/cpu.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub struct CPU {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 54 |     frame_buffer: [[u8; 64]; 32],
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sepc`
[INFO] [stdout]   --> src/chip8/sound.rs:41:14
[INFO] [stdout]    |
[INFO] [stdout] 41 |             |sepc| {
[INFO] [stdout]    |              ^^^^ help: if this is intentional, prefix it with an underscore: `_sepc`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Opcode` is more private than the item `CPU::exec_opcode`
[INFO] [stdout]    --> src/chip8/cpu.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 180 |     pub fn exec_opcode(&mut self, opcode: &Opcode) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `CPU::exec_opcode` is reachable at visibility `pub(crate)`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `Opcode` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/chip8/cpu.rs:65:1
[INFO] [stdout]     |
[INFO] [stdout] 65  | struct Opcode(u16);
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEMORY_FONT_START` is never used
[INFO] [stdout]   --> src/chip8/cpu.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const MEMORY_FONT_START: u16 = 0x0000;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEMORY_FONT_END` is never used
[INFO] [stdout]   --> src/chip8/cpu.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | const MEMORY_FONT_END: u16 = 0x01FF;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEMORY_PROGRAM_END` is never used
[INFO] [stdout]   --> src/chip8/cpu.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const MEMORY_PROGRAM_END: u16 = 0x0FFF;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEMORY_PROGRAM_LEN` is never used
[INFO] [stdout]   --> src/chip8/cpu.rs:20:11
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub const MEMORY_PROGRAM_LEN: u16 = (MEMORY_PROGRAM_END - MEMORY_PROGRAM_BASE);
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `frame_buffer` is never read
[INFO] [stdout]   --> src/chip8/cpu.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub struct CPU {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 54 |     frame_buffer: [[u8; 64]; 32],
[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 3.87s
[INFO] running `Command { std: "docker" "inspect" "d1a09344e374134bc659d5dc9dbed8206867ce25318fc3e2bbefa817c65d651c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1a09344e374134bc659d5dc9dbed8206867ce25318fc3e2bbefa817c65d651c", kill_on_drop: false }`
[INFO] [stdout] d1a09344e374134bc659d5dc9dbed8206867ce25318fc3e2bbefa817c65d651c