[INFO] cloning repository https://github.com/aemreaydin/rust_chip8_emulator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aemreaydin/rust_chip8_emulator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faemreaydin%2Frust_chip8_emulator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faemreaydin%2Frust_chip8_emulator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4461b9f3838537726e5c8f7017ad96ff7e351924
[INFO] building aemreaydin/rust_chip8_emulator against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faemreaydin%2Frust_chip8_emulator" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aemreaydin/rust_chip8_emulator on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aemreaydin/rust_chip8_emulator
[INFO] finished tweaking git repo https://github.com/aemreaydin/rust_chip8_emulator
[INFO] tweaked toml for git repo https://github.com/aemreaydin/rust_chip8_emulator written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/aemreaydin/rust_chip8_emulator 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sdl2 v0.34.3
[INFO] [stderr]   Downloaded sdl2-sys v0.34.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ba6f1abd9844cc99c0ee5db1253ce61908cac313d97788d44d39b4ca3058b80
[INFO] running `Command { std: "docker" "start" "-a" "7ba6f1abd9844cc99c0ee5db1253ce61908cac313d97788d44d39b4ca3058b80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ba6f1abd9844cc99c0ee5db1253ce61908cac313d97788d44d39b4ca3058b80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ba6f1abd9844cc99c0ee5db1253ce61908cac313d97788d44d39b4ca3058b80", kill_on_drop: false }`
[INFO] [stdout] 7ba6f1abd9844cc99c0ee5db1253ce61908cac313d97788d44d39b4ca3058b80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76159fdcccdc875f721802ab79aea68c932d185196293cd197035b30d85355d9
[INFO] running `Command { std: "docker" "start" "-a" "76159fdcccdc875f721802ab79aea68c932d185196293cd197035b30d85355d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling getrandom v0.2.1
[INFO] [stderr]    Compiling version-compare v0.0.10
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling sdl2 v0.34.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling sdl2-sys v0.34.3
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling rand_core v0.6.1
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling gl v0.14.0
[INFO] [stderr]    Compiling rand v0.8.2
[INFO] [stderr]    Compiling chip8_rust_emulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/chip8/cpu.rs:181:40
[INFO] [stdout]     |
[INFO] [stdout] 181 |         self.prog_counter = self.stack[(self.stack_ptr as usize)];
[INFO] [stdout]     |                                        ^                       ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 181 -         self.prog_counter = self.stack[(self.stack_ptr as usize)];
[INFO] [stdout] 181 +         self.prog_counter = self.stack[self.stack_ptr as usize];
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/chip8/cpu.rs:192:20
[INFO] [stdout]     |
[INFO] [stdout] 192 |         self.stack[(self.stack_ptr as usize)] = self.prog_counter;
[INFO] [stdout]     |                    ^                       ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 192 -         self.stack[(self.stack_ptr as usize)] = self.prog_counter;
[INFO] [stdout] 192 +         self.stack[self.stack_ptr as usize] = self.prog_counter;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/chip8/cpu.rs:198:23
[INFO] [stdout]     |
[INFO] [stdout] 198 |         if self.v_reg[(vx as usize)] == nn {
[INFO] [stdout]     |                       ^           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 198 -         if self.v_reg[(vx as usize)] == nn {
[INFO] [stdout] 198 +         if self.v_reg[vx as usize] == nn {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `opcodes` is never read
[INFO] [stdout]   --> src/chip8/cpu.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct CPU {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub opcodes: Vec<u16>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CPU` 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] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.27s
[INFO] running `Command { std: "docker" "inspect" "76159fdcccdc875f721802ab79aea68c932d185196293cd197035b30d85355d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76159fdcccdc875f721802ab79aea68c932d185196293cd197035b30d85355d9", kill_on_drop: false }`
[INFO] [stdout] 76159fdcccdc875f721802ab79aea68c932d185196293cd197035b30d85355d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41fa7d7022c2ae15dc4f891cd5733f2b783f1bfb9bc9e1d8b4a4868a3d2e6088
[INFO] running `Command { std: "docker" "start" "-a" "41fa7d7022c2ae15dc4f891cd5733f2b783f1bfb9bc9e1d8b4a4868a3d2e6088", kill_on_drop: false }`
[INFO] [stderr]    Compiling chip8_rust_emulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/chip8/cpu.rs:181:40
[INFO] [stdout]     |
[INFO] [stdout] 181 |         self.prog_counter = self.stack[(self.stack_ptr as usize)];
[INFO] [stdout]     |                                        ^                       ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 181 -         self.prog_counter = self.stack[(self.stack_ptr as usize)];
[INFO] [stdout] 181 +         self.prog_counter = self.stack[self.stack_ptr as usize];
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/chip8/cpu.rs:192:20
[INFO] [stdout]     |
[INFO] [stdout] 192 |         self.stack[(self.stack_ptr as usize)] = self.prog_counter;
[INFO] [stdout]     |                    ^                       ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 192 -         self.stack[(self.stack_ptr as usize)] = self.prog_counter;
[INFO] [stdout] 192 +         self.stack[self.stack_ptr as usize] = self.prog_counter;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/chip8/cpu.rs:198:23
[INFO] [stdout]     |
[INFO] [stdout] 198 |         if self.v_reg[(vx as usize)] == nn {
[INFO] [stdout]     |                       ^           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 198 -         if self.v_reg[(vx as usize)] == nn {
[INFO] [stdout] 198 +         if self.v_reg[vx as usize] == nn {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/chip8/cpu.rs:464:19
[INFO] [stdout]     |
[INFO] [stdout] 464 |         cpu.v_reg[(vx as usize)] = val;
[INFO] [stdout]     |                   ^           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 464 -         cpu.v_reg[(vx as usize)] = val;
[INFO] [stdout] 464 +         cpu.v_reg[vx as usize] = val;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/chip8/cpu.rs:465:19
[INFO] [stdout]     |
[INFO] [stdout] 465 |         cpu.v_reg[(vy as usize)] = val;
[INFO] [stdout]     |                   ^           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 465 -         cpu.v_reg[(vy as usize)] = val;
[INFO] [stdout] 465 +         cpu.v_reg[vy as usize] = val;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "41fa7d7022c2ae15dc4f891cd5733f2b783f1bfb9bc9e1d8b4a4868a3d2e6088", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41fa7d7022c2ae15dc4f891cd5733f2b783f1bfb9bc9e1d8b4a4868a3d2e6088", kill_on_drop: false }`
[INFO] [stdout] 41fa7d7022c2ae15dc4f891cd5733f2b783f1bfb9bc9e1d8b4a4868a3d2e6088