[INFO] cloning repository https://github.com/SylvanB/chip8-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SylvanB/chip8-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSylvanB%2Fchip8-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSylvanB%2Fchip8-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9701fc5951b94cb655fdcd49d88d606f17fa16ca
[INFO] building SylvanB/chip8-rs 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%2FSylvanB%2Fchip8-rs" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SylvanB/chip8-rs 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/SylvanB/chip8-rs
[INFO] finished tweaking git repo https://github.com/SylvanB/chip8-rs
[INFO] tweaked toml for git repo https://github.com/SylvanB/chip8-rs written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/SylvanB/chip8-rs 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 }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] b7d53fda300f00dab5f3508045d54002cb3513951795ae4ce79aacc4b72593f7
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[INFO] [stderr]    Compiling yaml-rust v0.3.5
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[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling rustc-hash v1.1.0
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[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling chrono v0.4.19
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[INFO] [stderr]    Compiling xkbcommon-sys v0.7.5
[INFO] [stderr]    Compiling xkb v0.2.1
[INFO] [stderr]    Compiling chip8_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `TryFrom` and `TryInto`
[INFO] [stdout]  --> src/keyboard/mod.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::{TryFrom, TryInto};
[INFO] [stdout]   |                    ^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TryFrom` and `TryInto`
[INFO] [stdout]  --> src/keyboard/dummy_keyboard.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::{TryFrom, TryInto};
[INFO] [stdout]   |                    ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TryFrom`, `TryInto`, and `error::Error`
[INFO] [stdout]  --> src/keyboard/minifb_keyboard.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 |     convert::{TryFrom, TryInto},
[INFO] [stdout]   |               ^^^^^^^  ^^^^^^^
[INFO] [stdout] 4 |     error::Error,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Key`
[INFO] [stdout]  --> src/keyboard/minifb_keyboard.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | use minifb::{Key, Window};
[INFO] [stdout]   |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keys`
[INFO] [stdout]   --> src/keyboard/dummy_keyboard.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn update_state(&mut self, keys: &[u8]) {
[INFO] [stdout]    |                                ^^^^ help: if this is intentional, prefix it with an underscore: `_keys`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `execute` is never used
[INFO] [stdout]   --> src/cpu.rs:86:12
[INFO] [stdout]    |
[INFO] [stdout] 60 | / impl<TKeyboard> CPU<TKeyboard>
[INFO] [stdout] 61 | | where
[INFO] [stdout] 62 | |     TKeyboard: Keyboard,
[INFO] [stdout]    | |________________________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 86 |       pub fn execute(&mut self) {
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `DebugDisplay` is never used
[INFO] [stdout]   --> src/display.rs:86:18
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub(crate) trait DebugDisplay {
[INFO] [stdout]    |                  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DummyKeyboard` is never constructed
[INFO] [stdout]  --> src/keyboard/dummy_keyboard.rs:7:19
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub(crate) struct DummyKeyboard {
[INFO] [stdout]   |                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `initialise` and `get_current_keydowns` are never used
[INFO] [stdout]   --> src/keyboard/dummy_keyboard.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl DummyKeyboard {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 25 |     pub fn initialise() -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn get_current_keydowns(&self) -> &Vec<u8> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `window` is never read
[INFO] [stdout]   --> src/keyboard/minifb_keyboard.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(crate) struct MiniFbKeyboard<'keyboard> {
[INFO] [stdout]    |                   -------------- field in this struct
[INFO] [stdout] 13 |     window: &'keyboard Rc<RefCell<Window>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PROGRAM_START_OFFSET` is never used
[INFO] [stdout]  --> src/memory.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub(crate) const PROGRAM_START_OFFSET: usize = 0x200;
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ETI_600_PROGRAM_START_OFFSET` is never used
[INFO] [stdout]   --> src/memory.rs:11:18
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub(crate) const ETI_600_PROGRAM_START_OFFSET: usize = 0x600;
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `insert_instruction` is never used
[INFO] [stdout]    --> src/memory.rs:164:12
[INFO] [stdout]     |
[INFO] [stdout] 18  | impl Memory {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 164 |     pub fn insert_instruction(&mut self, index: usize, ins: u16) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]  --> src/opcode.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct OpCode {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 3 |     inner: u16,
[INFO] [stdout] 4 |     id: u8,
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `OpCode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `id` is never used
[INFO] [stdout]   --> src/opcode.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl OpCode {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub fn id(&self) -> u8 {
[INFO] [stdout]    |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.04s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v5.1.2, nom v6.2.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "b7d53fda300f00dab5f3508045d54002cb3513951795ae4ce79aacc4b72593f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7d53fda300f00dab5f3508045d54002cb3513951795ae4ce79aacc4b72593f7", kill_on_drop: false }`
[INFO] [stdout] b7d53fda300f00dab5f3508045d54002cb3513951795ae4ce79aacc4b72593f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] fd3a8190838c37cbfc128601d535cc07711e6d33f8b37ba507d2f27317eb510c
[INFO] running `Command { std: "docker" "start" "-a" "fd3a8190838c37cbfc128601d535cc07711e6d33f8b37ba507d2f27317eb510c", kill_on_drop: false }`
[INFO] [stderr]    Compiling chip8_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `TryFrom` and `TryInto`
[INFO] [stdout]  --> src/keyboard/mod.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::{TryFrom, TryInto};
[INFO] [stdout]   |                    ^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TryFrom` and `TryInto`
[INFO] [stdout]  --> src/keyboard/dummy_keyboard.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::{TryFrom, TryInto};
[INFO] [stdout]   |                    ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TryFrom`, `TryInto`, and `error::Error`
[INFO] [stdout]  --> src/keyboard/minifb_keyboard.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 |     convert::{TryFrom, TryInto},
[INFO] [stdout]   |               ^^^^^^^  ^^^^^^^
[INFO] [stdout] 4 |     error::Error,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Key`
[INFO] [stdout]  --> src/keyboard/minifb_keyboard.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | use minifb::{Key, Window};
[INFO] [stdout]   |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keys`
[INFO] [stdout]   --> src/keyboard/dummy_keyboard.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn update_state(&mut self, keys: &[u8]) {
[INFO] [stdout]    |                                ^^^^ help: if this is intentional, prefix it with an underscore: `_keys`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `execute` is never used
[INFO] [stdout]   --> src/cpu.rs:86:12
[INFO] [stdout]    |
[INFO] [stdout] 60 | / impl<TKeyboard> CPU<TKeyboard>
[INFO] [stdout] 61 | | where
[INFO] [stdout] 62 | |     TKeyboard: Keyboard,
[INFO] [stdout]    | |________________________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 86 |       pub fn execute(&mut self) {
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_current_keydowns` is never used
[INFO] [stdout]   --> src/keyboard/dummy_keyboard.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl DummyKeyboard {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn get_current_keydowns(&self) -> &Vec<u8> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `window` is never read
[INFO] [stdout]   --> src/keyboard/minifb_keyboard.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(crate) struct MiniFbKeyboard<'keyboard> {
[INFO] [stdout]    |                   -------------- field in this struct
[INFO] [stdout] 13 |     window: &'keyboard Rc<RefCell<Window>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PROGRAM_START_OFFSET` is never used
[INFO] [stdout]  --> src/memory.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub(crate) const PROGRAM_START_OFFSET: usize = 0x200;
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ETI_600_PROGRAM_START_OFFSET` is never used
[INFO] [stdout]   --> src/memory.rs:11:18
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub(crate) const ETI_600_PROGRAM_START_OFFSET: usize = 0x600;
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.61s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v5.1.2, nom v6.2.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "fd3a8190838c37cbfc128601d535cc07711e6d33f8b37ba507d2f27317eb510c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd3a8190838c37cbfc128601d535cc07711e6d33f8b37ba507d2f27317eb510c", kill_on_drop: false }`
[INFO] [stdout] fd3a8190838c37cbfc128601d535cc07711e6d33f8b37ba507d2f27317eb510c