[INFO] cloning repository https://github.com/SatelliteDish/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/SatelliteDish/chip8-emulator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSatelliteDish%2Fchip8-emulator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSatelliteDish%2Fchip8-emulator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1b5f5d0caa5e923213bc0e81a3593e3f8db9d00e
[INFO] building SatelliteDish/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%2FSatelliteDish%2Fchip8-emulator" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SatelliteDish/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/SatelliteDish/chip8-emulator
[INFO] finished tweaking git repo https://github.com/SatelliteDish/chip8-emulator
[INFO] tweaked toml for git repo https://github.com/SatelliteDish/chip8-emulator written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/SatelliteDish/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 6e1d424cd4ca7be556ddec789f62be5df8c2eb219b944646182d2dd1b861a05c
[INFO] running `Command { std: "docker" "start" "-a" "6e1d424cd4ca7be556ddec789f62be5df8c2eb219b944646182d2dd1b861a05c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e1d424cd4ca7be556ddec789f62be5df8c2eb219b944646182d2dd1b861a05c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e1d424cd4ca7be556ddec789f62be5df8c2eb219b944646182d2dd1b861a05c", kill_on_drop: false }`
[INFO] [stdout] 6e1d424cd4ca7be556ddec789f62be5df8c2eb219b944646182d2dd1b861a05c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] b445e16c0bd3d182124cdbd80220f66707a1bba4be838d3f6d7e7c80f3ea5012
[INFO] running `Command { std: "docker" "start" "-a" "b445e16c0bd3d182124cdbd80220f66707a1bba4be838d3f6d7e7c80f3ea5012", kill_on_drop: false }`
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling libc v0.2.157
[INFO] [stderr]    Compiling sdl2 v0.37.0
[INFO] [stderr]    Compiling sdl2-sys v0.37.0
[INFO] [stderr]    Compiling chip8-emu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/chip8/mod.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Chip8Error {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn new(message: String) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `cpu`, `pointer`, and `heap` are never read
[INFO] [stdout]   --> src/chip8/mod.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct Chip8 {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 41 |     cpu: Cpu,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 42 |     pointer: usize,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 43 |     heap: Vec<u8>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `fetch`, `decode`, and `execute` are never used
[INFO] [stdout]   --> src/chip8/mod.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | impl Chip8 {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 83 |     fn fetch(&mut self) -> (u8, u8) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     fn decode(&self) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95 |     fn execute(&self) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stack` is never read
[INFO] [stdout]  --> src/chip8/cpu.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Cpu {
[INFO] [stdout]   |            --- field in this struct
[INFO] [stdout] 5 |     stack: Stack
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stack` is never read
[INFO] [stdout]   --> src/chip8/cpu.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Stack {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 17 |     stack: Vec<u8>
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push`, `pop`, and `peek` are never used
[INFO] [stdout]   --> src/chip8/cpu.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl Stack {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub fn push(&mut self, item: u8) -> Result <(), Box<dyn Error>> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn pop(&mut self) -> Option<u8> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn peek(&self) -> Option<&u8> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.63s
[INFO] running `Command { std: "docker" "inspect" "b445e16c0bd3d182124cdbd80220f66707a1bba4be838d3f6d7e7c80f3ea5012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b445e16c0bd3d182124cdbd80220f66707a1bba4be838d3f6d7e7c80f3ea5012", kill_on_drop: false }`
[INFO] [stdout] b445e16c0bd3d182124cdbd80220f66707a1bba4be838d3f6d7e7c80f3ea5012
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 1d574b4c043050011c419b27ddc79ce1af36693d0cbc922370b91670c3f04cdb
[INFO] running `Command { std: "docker" "start" "-a" "1d574b4c043050011c419b27ddc79ce1af36693d0cbc922370b91670c3f04cdb", kill_on_drop: false }`
[INFO] [stderr]    Compiling chip8-emu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/chip8/mod.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Chip8Error {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn new(message: String) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `cpu`, `pointer`, and `heap` are never read
[INFO] [stdout]   --> src/chip8/mod.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct Chip8 {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 41 |     cpu: Cpu,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 42 |     pointer: usize,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 43 |     heap: Vec<u8>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `fetch`, `decode`, and `execute` are never used
[INFO] [stdout]   --> src/chip8/mod.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | impl Chip8 {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 83 |     fn fetch(&mut self) -> (u8, u8) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     fn decode(&self) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95 |     fn execute(&self) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stack` is never read
[INFO] [stdout]  --> src/chip8/cpu.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Cpu {
[INFO] [stdout]   |            --- field in this struct
[INFO] [stdout] 5 |     stack: Stack
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stack` is never read
[INFO] [stdout]   --> src/chip8/cpu.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Stack {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 17 |     stack: Vec<u8>
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push`, `pop`, and `peek` are never used
[INFO] [stdout]   --> src/chip8/cpu.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl Stack {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub fn push(&mut self, item: u8) -> Result <(), Box<dyn Error>> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn pop(&mut self) -> Option<u8> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn peek(&self) -> Option<&u8> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "1d574b4c043050011c419b27ddc79ce1af36693d0cbc922370b91670c3f04cdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d574b4c043050011c419b27ddc79ce1af36693d0cbc922370b91670c3f04cdb", kill_on_drop: false }`
[INFO] [stdout] 1d574b4c043050011c419b27ddc79ce1af36693d0cbc922370b91670c3f04cdb