[INFO] cloning repository https://github.com/anthonyvd/yagbe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/anthonyvd/yagbe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanthonyvd%2Fyagbe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanthonyvd%2Fyagbe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0b6afffd78b4a3f75d3ad0535b3fb65fc31f3ce3
[INFO] testing anthonyvd/yagbe against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanthonyvd%2Fyagbe" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/anthonyvd/yagbe on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/anthonyvd/yagbe
[INFO] finished tweaking git repo https://github.com/anthonyvd/yagbe
[INFO] tweaked toml for git repo https://github.com/anthonyvd/yagbe written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/anthonyvd/yagbe already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a1755746694fe348b7cdf95f8b6086f9e6e4adf99338216f62212d6ab63b034
[INFO] running `Command { std: "docker" "start" "-a" "7a1755746694fe348b7cdf95f8b6086f9e6e4adf99338216f62212d6ab63b034", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a1755746694fe348b7cdf95f8b6086f9e6e4adf99338216f62212d6ab63b034", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a1755746694fe348b7cdf95f8b6086f9e6e4adf99338216f62212d6ab63b034", kill_on_drop: false }`
[INFO] [stdout] 7a1755746694fe348b7cdf95f8b6086f9e6e4adf99338216f62212d6ab63b034
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af2f495a76b45bcad0138af40b4d2c483efeb82e7baf5b9e29355bdb4f9f8eab
[INFO] running `Command { std: "docker" "start" "-a" "af2f495a76b45bcad0138af40b4d2c483efeb82e7baf5b9e29355bdb4f9f8eab", kill_on_drop: false }`
[INFO] [stderr]    Compiling version-compare v0.0.10
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling sdl2 v0.34.2
[INFO] [stderr]    Compiling sdl2-sys v0.34.2
[INFO] [stderr]    Compiling foo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> display.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> registers.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 149 |         panic!("wut");
[INFO] [stdout]     |         -------------- any code following this expression is unreachable
[INFO] [stdout] 150 |         println!("Trying to write single byte to word register");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `before` is assigned to, but never used
[INFO] [stdout]   --> main.rs:36:11
[INFO] [stdout]    |
[INFO] [stdout] 36 |   let mut before = Instant::now();
[INFO] [stdout]    |           ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_before` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `before` is never read
[INFO] [stdout]   --> main.rs:89:7
[INFO] [stdout]    |
[INFO] [stdout] 89 |       before = Instant::now();
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `jump` is never read
[INFO] [stdout]    --> cpu.rs:628:13
[INFO] [stdout]     |
[INFO] [stdout] 628 |     let mut jump = 0; 
[INFO] [stdout]     |             ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `clear_color`
[INFO] [stdout]   --> framebuffer.rs:13:43
[INFO] [stdout]    |
[INFO] [stdout] 13 |   pub fn new(width: usize, height: usize, clear_color: u8) -> Framebuffer {
[INFO] [stdout]    |                                           ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_clear_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_registers`
[INFO] [stdout]   --> cpu.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 |   fn dump_registers(&self) {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `F`
[INFO] [stdout]  --> registers.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 |   F,
[INFO] [stdout]   |   ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Af`
[INFO] [stdout]  --> registers.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 |   Af,
[INFO] [stdout]   |   ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Pc`
[INFO] [stdout]   --> registers.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 16 |   Pc,
[INFO] [stdout]    |   ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `n_set`
[INFO] [stdout]   --> registers.rs:50:10
[INFO] [stdout]    |
[INFO] [stdout] 50 |   pub fn n_set(&self) -> bool {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `h_set`
[INFO] [stdout]   --> registers.rs:54:10
[INFO] [stdout]    |
[INFO] [stdout] 54 |   pub fn h_set(&self) -> bool {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]  --> display.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   name: String,
[INFO] [stdout]   |   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> display.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         self.c.draw_points(&frame.blank_pixels[..]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> display.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |         self.c.draw_points(&frame.light_pixels[..]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> display.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         self.c.draw_points(&frame.medium_pixels[..]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> display.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         self.c.draw_points(&frame.dark_pixels[..]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.76s
[INFO] running `Command { std: "docker" "inspect" "af2f495a76b45bcad0138af40b4d2c483efeb82e7baf5b9e29355bdb4f9f8eab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af2f495a76b45bcad0138af40b4d2c483efeb82e7baf5b9e29355bdb4f9f8eab", kill_on_drop: false }`
[INFO] [stdout] af2f495a76b45bcad0138af40b4d2c483efeb82e7baf5b9e29355bdb4f9f8eab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0882c636ea2a0677498a5805939aba521d93771905aac940a01f5e52eae58d90
[INFO] running `Command { std: "docker" "start" "-a" "0882c636ea2a0677498a5805939aba521d93771905aac940a01f5e52eae58d90", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling foo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> display.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> registers.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 149 |         panic!("wut");
[INFO] [stdout]     |         -------------- any code following this expression is unreachable
[INFO] [stdout] 150 |         println!("Trying to write single byte to word register");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `before` is assigned to, but never used
[INFO] [stdout]   --> main.rs:36:11
[INFO] [stdout]    |
[INFO] [stdout] 36 |   let mut before = Instant::now();
[INFO] [stdout]    |           ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_before` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `before` is never read
[INFO] [stdout]   --> main.rs:89:7
[INFO] [stdout]    |
[INFO] [stdout] 89 |       before = Instant::now();
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `jump` is never read
[INFO] [stdout]    --> cpu.rs:628:13
[INFO] [stdout]     |
[INFO] [stdout] 628 |     let mut jump = 0; 
[INFO] [stdout]     |             ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `clear_color`
[INFO] [stdout]   --> framebuffer.rs:13:43
[INFO] [stdout]    |
[INFO] [stdout] 13 |   pub fn new(width: usize, height: usize, clear_color: u8) -> Framebuffer {
[INFO] [stdout]    |                                           ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_clear_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_registers`
[INFO] [stdout]   --> cpu.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 |   fn dump_registers(&self) {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `F`
[INFO] [stdout]  --> registers.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 |   F,
[INFO] [stdout]   |   ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Af`
[INFO] [stdout]  --> registers.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 |   Af,
[INFO] [stdout]   |   ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Pc`
[INFO] [stdout]   --> registers.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 16 |   Pc,
[INFO] [stdout]    |   ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `n_set`
[INFO] [stdout]   --> registers.rs:50:10
[INFO] [stdout]    |
[INFO] [stdout] 50 |   pub fn n_set(&self) -> bool {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `h_set`
[INFO] [stdout]   --> registers.rs:54:10
[INFO] [stdout]    |
[INFO] [stdout] 54 |   pub fn h_set(&self) -> bool {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]  --> display.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   name: String,
[INFO] [stdout]   |   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> display.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         self.c.draw_points(&frame.blank_pixels[..]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> display.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |         self.c.draw_points(&frame.light_pixels[..]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> display.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         self.c.draw_points(&frame.medium_pixels[..]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> display.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         self.c.draw_points(&frame.dark_pixels[..]);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `Command { std: "docker" "inspect" "0882c636ea2a0677498a5805939aba521d93771905aac940a01f5e52eae58d90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0882c636ea2a0677498a5805939aba521d93771905aac940a01f5e52eae58d90", kill_on_drop: false }`
[INFO] [stdout] 0882c636ea2a0677498a5805939aba521d93771905aac940a01f5e52eae58d90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f914b45d311ad1f8533fed0f6490d1b95102dd3593a8d162ea84d5a4e61b1b51
[INFO] running `Command { std: "docker" "start" "-a" "f914b45d311ad1f8533fed0f6490d1b95102dd3593a8d162ea84d5a4e61b1b51", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::convert::TryInto`
[INFO] [stderr]  --> display.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::convert::TryInto;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> registers.rs:150:9
[INFO] [stderr]     |
[INFO] [stderr] 149 |         panic!("wut");
[INFO] [stderr]     |         -------------- any code following this expression is unreachable
[INFO] [stderr] 150 |         println!("Trying to write single byte to word register");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]     = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable `before` is assigned to, but never used
[INFO] [stderr]   --> main.rs:36:11
[INFO] [stderr]    |
[INFO] [stderr] 36 |   let mut before = Instant::now();
[INFO] [stderr]    |           ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_before` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `before` is never read
[INFO] [stderr]   --> main.rs:89:7
[INFO] [stderr]    |
[INFO] [stderr] 89 |       before = Instant::now();
[INFO] [stderr]    |       ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `jump` is never read
[INFO] [stderr]    --> cpu.rs:628:13
[INFO] [stderr]     |
[INFO] [stderr] 628 |     let mut jump = 0; 
[INFO] [stderr]     |             ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `clear_color`
[INFO] [stderr]   --> framebuffer.rs:13:43
[INFO] [stderr]    |
[INFO] [stderr] 13 |   pub fn new(width: usize, height: usize, clear_color: u8) -> Framebuffer {
[INFO] [stderr]    |                                           ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_clear_color`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `dump_registers`
[INFO] [stderr]   --> cpu.rs:28:6
[INFO] [stderr]    |
[INFO] [stderr] 28 |   fn dump_registers(&self) {
[INFO] [stderr]    |      ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F`
[INFO] [stderr]  --> registers.rs:4:3
[INFO] [stderr]   |
[INFO] [stderr] 4 |   F,
[INFO] [stderr]   |   ^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Af`
[INFO] [stderr]  --> registers.rs:5:3
[INFO] [stderr]   |
[INFO] [stderr] 5 |   Af,
[INFO] [stderr]   |   ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pc`
[INFO] [stderr]   --> registers.rs:16:3
[INFO] [stderr]    |
[INFO] [stderr] 16 |   Pc,
[INFO] [stderr]    |   ^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `n_set`
[INFO] [stderr]   --> registers.rs:50:10
[INFO] [stderr]    |
[INFO] [stderr] 50 |   pub fn n_set(&self) -> bool {
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `h_set`
[INFO] [stderr]   --> registers.rs:54:10
[INFO] [stderr]    |
[INFO] [stderr] 54 |   pub fn h_set(&self) -> bool {
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `name`
[INFO] [stderr]  --> display.rs:9:3
[INFO] [stderr]   |
[INFO] [stderr] 9 |   name: String,
[INFO] [stderr]   |   ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> display.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |         self.c.draw_points(&frame.blank_pixels[..]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> display.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |         self.c.draw_points(&frame.light_pixels[..]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> display.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |         self.c.draw_points(&frame.medium_pixels[..]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> display.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         self.c.draw_points(&frame.dark_pixels[..]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/foo-0004dca253bda38a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f914b45d311ad1f8533fed0f6490d1b95102dd3593a8d162ea84d5a4e61b1b51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f914b45d311ad1f8533fed0f6490d1b95102dd3593a8d162ea84d5a4e61b1b51", kill_on_drop: false }`
[INFO] [stdout] f914b45d311ad1f8533fed0f6490d1b95102dd3593a8d162ea84d5a4e61b1b51