[INFO] cloning repository https://github.com/MaxStrange/mychip8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MaxStrange/mychip8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaxStrange%2Fmychip8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaxStrange%2Fmychip8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f81dd44bf6d77a71e2f65d5eb1fdac9b7fec8593
[INFO] checking MaxStrange/mychip8/f81dd44bf6d77a71e2f65d5eb1fdac9b7fec8593 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaxStrange%2Fmychip8" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/MaxStrange/mychip8 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MaxStrange/mychip8
[INFO] finished tweaking git repo https://github.com/MaxStrange/mychip8
[INFO] tweaked toml for git repo https://github.com/MaxStrange/mychip8 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/MaxStrange/mychip8 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ordered-float v1.0.1
[INFO] [stderr]   Downloaded piston-gfx_texture v0.34.0
[INFO] [stderr]   Downloaded proc-macro2 v0.4.26
[INFO] [stderr]   Downloaded gfx_gl v0.5.0
[INFO] [stderr]   Downloaded gfx v0.17.1
[INFO] [stderr]   Downloaded inflate v0.4.4
[INFO] [stderr]   Downloaded num-derive v0.2.3
[INFO] [stderr]   Downloaded gfx_device_gl v0.15.5
[INFO] [stderr]   Downloaded serde v1.0.85
[INFO] [stderr]   Downloaded smithay-client-toolkit v0.4.4
[INFO] [stderr]   Downloaded rusttype v0.7.3
[INFO] [stderr]   Downloaded pistoncore-glutin_window v0.51.1
[INFO] [stderr]   Downloaded gfx_core v0.8.3
[INFO] [stderr]   Downloaded serde_derive v1.0.85
[INFO] [stderr]   Downloaded andrew v0.1.5
[INFO] [stderr]   Downloaded piston2d-gfx_graphics v0.54.0
[INFO] [stderr]   Downloaded piston_window v0.85.0
[INFO] [stderr]   Downloaded tiff v0.2.1
[INFO] [stderr]   Downloaded stb_truetype v0.2.5
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7edc78acbcd48479fe50ab1e7eb0e94911b31134f077c5e4c7972f6dae0c8bf5
[INFO] running `Command { std: "docker" "start" "-a" "7edc78acbcd48479fe50ab1e7eb0e94911b31134f077c5e4c7972f6dae0c8bf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7edc78acbcd48479fe50ab1e7eb0e94911b31134f077c5e4c7972f6dae0c8bf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7edc78acbcd48479fe50ab1e7eb0e94911b31134f077c5e4c7972f6dae0c8bf5", kill_on_drop: false }`
[INFO] [stdout] 7edc78acbcd48479fe50ab1e7eb0e94911b31134f077c5e4c7972f6dae0c8bf5
[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" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6cb58c8607479f9ec7ec4c0c1d5a2186635c16ffced33ce5a253c10d79d578ce
[INFO] running `Command { std: "docker" "start" "-a" "6cb58c8607479f9ec7ec4c0c1d5a2186635c16ffced33ce5a253c10d79d578ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.47
[INFO] [stderr]    Compiling proc-macro2 v0.4.26
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling khronos_api v3.0.0
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling wayland-scanner v0.21.11
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]     Checking piston-float v0.3.0
[INFO] [stderr]    Compiling nix v0.12.0
[INFO] [stderr]     Checking ordered-float v1.0.1
[INFO] [stderr]     Checking approx v0.3.1
[INFO] [stderr]    Compiling rand v0.6.4
[INFO] [stderr]     Checking stb_truetype v0.2.5
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]    Compiling gl_generator v0.10.0
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking rusttype v0.7.3
[INFO] [stderr]     Checking piston-viewport v0.5.0
[INFO] [stderr]     Checking rand_os v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]    Compiling serde v1.0.85
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]    Compiling khronos_api v2.2.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling wayland-client v0.21.11
[INFO] [stderr]    Compiling wayland-protocols v0.21.11
[INFO] [stderr]     Checking num_cpus v1.9.0
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking downcast-rs v1.0.3
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]     Checking wayland-sys v0.21.11
[INFO] [stderr]     Checking owning_ref v0.4.0
[INFO] [stderr]     Checking walkdir v2.2.7
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]     Checking smallvec v0.6.8
[INFO] [stderr]    Compiling x11-dl v2.18.3
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking wayland-commons v0.21.11
[INFO] [stderr]     Checking draw_state v0.8.0
[INFO] [stderr]     Checking shader_version v0.3.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling gl_generator v0.9.0
[INFO] [stderr]     Checking andrew v0.1.5
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking inflate v0.4.4
[INFO] [stderr]     Checking deflate v0.7.19
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking gif v0.10.1
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]    Compiling gfx_gl v0.5.0
[INFO] [stderr]    Compiling glutin v0.19.0
[INFO] [stderr]    Compiling gl v0.11.0
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]    Compiling derivative v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.85
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking piston-texture v0.6.0
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking vecmath v0.3.1
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking read_color v1.0.0
[INFO] [stderr]     Checking interpolation v0.1.0
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking piston2d-graphics v0.28.0
[INFO] [stderr]     Checking gfx_core v0.8.3
[INFO] [stderr]     Checking tiff v0.2.1
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking image v0.20.1
[INFO] [stderr]     Checking piston-shaders_graphics2d v0.3.1
[INFO] [stderr]     Checking gfx v0.17.1
[INFO] [stderr]     Checking gfx_device_gl v0.15.5
[INFO] [stderr]     Checking pistoncore-input v0.23.0
[INFO] [stderr]     Checking assembler v0.1.0 (/opt/rustwide/workdir/assembler)
[INFO] [stderr]     Checking piston-gfx_texture v0.34.0
[INFO] [stdout] warning: unused variable: `ch`
[INFO] [stdout]   --> assembler/src/lexer/lexer.rs:68:30
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn try_opcode(&mut self, ch: char) -> Option<opcodes::Opcode> {
[INFO] [stdout]    |                              ^^ help: if this is intentional, prefix it with an underscore: `_ch`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `options` and `state` are never read
[INFO] [stdout]   --> assembler/src/lexer/lexer.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | struct Lattice {
[INFO] [stdout]    |        ------- fields in this struct
[INFO] [stdout] 8  |     /// The current possibilities
[INFO] [stdout] 9  |     options: Vec<tokens::Token>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     state: Vec<char>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `lattice` is never read
[INFO] [stdout]   --> assembler/src/lexer/lexer.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Lexer {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 16 |     /// The lattice; i.e., what our current possiblities are
[INFO] [stdout] 17 |     lattice: Lattice,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ADD` is never constructed
[INFO] [stdout]  --> assembler/src/lexer/opcodes.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum Opcode {
[INFO] [stdout]   |          ------ variant in this enum
[INFO] [stdout] 4 |     ADD
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ch`
[INFO] [stdout]   --> assembler/src/lexer/lexer.rs:68:30
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn try_opcode(&mut self, ch: char) -> Option<opcodes::Opcode> {
[INFO] [stdout]    |                              ^^ help: if this is intentional, prefix it with an underscore: `_ch`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `options` and `state` are never read
[INFO] [stdout]   --> assembler/src/lexer/lexer.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | struct Lattice {
[INFO] [stdout]    |        ------- fields in this struct
[INFO] [stdout] 8  |     /// The current possibilities
[INFO] [stdout] 9  |     options: Vec<tokens::Token>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     state: Vec<char>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `lattice` is never read
[INFO] [stdout]   --> assembler/src/lexer/lexer.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Lexer {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 16 |     /// The lattice; i.e., what our current possiblities are
[INFO] [stdout] 17 |     lattice: Lattice,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ADD` is never constructed
[INFO] [stdout]  --> assembler/src/lexer/opcodes.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum Opcode {
[INFO] [stdout]   |          ------ variant in this enum
[INFO] [stdout] 4 |     ADD
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.54.0
[INFO] [stderr]     Checking pistoncore-window v0.34.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.39.0
[INFO] [stderr]     Checking piston v0.39.0
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.4
[INFO] [stderr]     Checking winit v0.18.1
[INFO] [stderr]     Checking pistoncore-glutin_window v0.51.1
[INFO] [stderr]     Checking piston_window v0.85.0
[INFO] [stderr]     Checking mychip8 v0.1.0 (/opt/rustwide/workdir/chip8)
[INFO] [stdout] warning: field `nrows` is never read
[INFO] [stdout]   --> chip8/src/display/chip8panel.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 77 | struct PixelGrid {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 78 |     /// Number of rows of pixels
[INFO] [stdout] 79 |     pub nrows: u32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PixelGrid` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `nrows` is never read
[INFO] [stdout]   --> chip8/src/display/chip8panel.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 77 | struct PixelGrid {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 78 |     /// Number of rows of pixels
[INFO] [stdout] 79 |     pub nrows: u32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PixelGrid` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 40.12s
[INFO] running `Command { std: "docker" "inspect" "6cb58c8607479f9ec7ec4c0c1d5a2186635c16ffced33ce5a253c10d79d578ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cb58c8607479f9ec7ec4c0c1d5a2186635c16ffced33ce5a253c10d79d578ce", kill_on_drop: false }`
[INFO] [stdout] 6cb58c8607479f9ec7ec4c0c1d5a2186635c16ffced33ce5a253c10d79d578ce