[INFO] cloning repository https://github.com/mdu02/ferric-8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mdu02/ferric-8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdu02%2Fferric-8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdu02%2Fferric-8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c5cbcb687d15d6576d8b9e4c9f7229b450e5b1d4
[INFO] checking mdu02/ferric-8 against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdu02%2Fferric-8" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mdu02/ferric-8
[INFO] finished tweaking git repo https://github.com/mdu02/ferric-8
[INFO] tweaked toml for git repo https://github.com/mdu02/ferric-8 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mdu02/ferric-8 on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mdu02/ferric-8 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5d139e9db818dffef9cb49067a1dfc7100db682dd5745dea2c588b2579ecc35c
[INFO] running `Command { std: "docker" "start" "-a" "5d139e9db818dffef9cb49067a1dfc7100db682dd5745dea2c588b2579ecc35c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d139e9db818dffef9cb49067a1dfc7100db682dd5745dea2c588b2579ecc35c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d139e9db818dffef9cb49067a1dfc7100db682dd5745dea2c588b2579ecc35c", kill_on_drop: false }`
[INFO] [stdout] 5d139e9db818dffef9cb49067a1dfc7100db682dd5745dea2c588b2579ecc35c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b988e3830e16b105e1eafd793f4d805c8fbadce88e31c0380dc2f01c8e5ebd64
[INFO] running `Command { std: "docker" "start" "-a" "b988e3830e16b105e1eafd793f4d805c8fbadce88e31c0380dc2f01c8e5ebd64", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking sdl2-sys v0.34.5
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking sdl2 v0.34.5
[INFO] [stderr]     Checking ferric-8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/speaker.rs:50:20
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 0.0...0.5 => self.volume,
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/cpu.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut v_regs:[ByteRegister; 16] =
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/cpu.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut stack_regs:[WordRegister; 17] = [WordRegister::new(String::from("dummy")),
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/byte_register.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut reg : ByteRegister = ByteRegister { value: 0, name};
[INFO] [stdout]   |             ----^^^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/word_register.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut reg : WordRegister = WordRegister { value: 0, name};
[INFO] [stdout]   |             ----^^^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut speaker = Speaker::new(sdl);
[INFO] [stdout]    |         ----^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `write_word` and `core_dump` are never used
[INFO] [stdout]   --> src/ram.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl RAM {
[INFO] [stdout]    | -------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn write_word(&mut self, adr: u16, val: u16) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     pub fn core_dump(&self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/byte_register.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct ByteRegister {
[INFO] [stdout]   |            ------------ field in this struct
[INFO] [stdout] 2 |     value: u8,
[INFO] [stdout] 3 |     name: String
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/word_register.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct WordRegister {
[INFO] [stdout]   |            ------------ field in this struct
[INFO] [stdout] 2 |     value: u16,
[INFO] [stdout] 3 |     name: String
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `increment_reg` and `decrement_reg` are never used
[INFO] [stdout]   --> src/word_register.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout]  6 | impl WordRegister {
[INFO] [stdout]    | ----------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn increment_reg(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn decrement_reg(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `draw_to_console` is never used
[INFO] [stdout]   --> src/graphics_buffer.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl GraphicsBuffer{
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn draw_to_console(&self){
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/graphics_buffer.rs:53:21
[INFO] [stdout]    |
[INFO] [stdout] 53 | /                     canvas.fill_rect(
[INFO] [stdout] 54 | |                         Rect::new((PIXEL_WIDTH * i as u32) as i32, (PIXEL_WIDTH * j as u32) as i32,
[INFO] [stdout] 55 | |                                   PIXEL_WIDTH, PIXEL_WIDTH)
[INFO] [stdout] 56 | |                     );
[INFO] [stdout]    | |_____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |                     let _ = canvas.fill_rect(
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/speaker.rs:50:20
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 0.0...0.5 => self.volume,
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/cpu.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut v_regs:[ByteRegister; 16] =
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/cpu.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut stack_regs:[WordRegister; 17] = [WordRegister::new(String::from("dummy")),
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cpu.rs:304:13
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let mut ram = RAM::new();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/byte_register.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut reg : ByteRegister = ByteRegister { value: 0, name};
[INFO] [stdout]   |             ----^^^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/word_register.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut reg : WordRegister = WordRegister { value: 0, name};
[INFO] [stdout]   |             ----^^^
[INFO] [stdout]   |             |
[INFO] [stdout]   |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/graphics_buffer.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let mut gfx = GraphicsBuffer::new();
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut speaker = Speaker::new(sdl);
[INFO] [stdout]    |         ----^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `core_dump` is never used
[INFO] [stdout]   --> src/ram.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl RAM {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 55 |     pub fn core_dump(&self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ret_test` is never used
[INFO] [stdout]    --> src/cpu.rs:333:8
[INFO] [stdout]     |
[INFO] [stdout] 333 |     fn ret_test() {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/byte_register.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct ByteRegister {
[INFO] [stdout]   |            ------------ field in this struct
[INFO] [stdout] 2 |     value: u8,
[INFO] [stdout] 3 |     name: String
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/word_register.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct WordRegister {
[INFO] [stdout]   |            ------------ field in this struct
[INFO] [stdout] 2 |     value: u16,
[INFO] [stdout] 3 |     name: String
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `draw_to_console` is never used
[INFO] [stdout]   --> src/graphics_buffer.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl GraphicsBuffer{
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn draw_to_console(&self){
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/graphics_buffer.rs:53:21
[INFO] [stdout]    |
[INFO] [stdout] 53 | /                     canvas.fill_rect(
[INFO] [stdout] 54 | |                         Rect::new((PIXEL_WIDTH * i as u32) as i32, (PIXEL_WIDTH * j as u32) as i32,
[INFO] [stdout] 55 | |                                   PIXEL_WIDTH, PIXEL_WIDTH)
[INFO] [stdout] 56 | |                     );
[INFO] [stdout]    | |_____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |                     let _ = canvas.fill_rect(
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.39s
[INFO] running `Command { std: "docker" "inspect" "b988e3830e16b105e1eafd793f4d805c8fbadce88e31c0380dc2f01c8e5ebd64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b988e3830e16b105e1eafd793f4d805c8fbadce88e31c0380dc2f01c8e5ebd64", kill_on_drop: false }`
[INFO] [stdout] b988e3830e16b105e1eafd793f4d805c8fbadce88e31c0380dc2f01c8e5ebd64
