[INFO] cloning repository https://github.com/mjpc13/hanoi_tower [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mjpc13/hanoi_tower" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmjpc13%2Fhanoi_tower", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmjpc13%2Fhanoi_tower'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 35fc8c36ca19da9ec65a1c099c06d1ab9f99bef3 [INFO] checking mjpc13/hanoi_tower against try#73ffebff6f34db7eb167bf9edcf2afa19c3073e9 for pr-147841 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmjpc13%2Fhanoi_tower" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/mjpc13/hanoi_tower [INFO] finished tweaking git repo https://github.com/mjpc13/hanoi_tower [INFO] tweaked toml for git repo https://github.com/mjpc13/hanoi_tower written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/mjpc13/hanoi_tower on toolchain 73ffebff6f34db7eb167bf9edcf2afa19c3073e9 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/mjpc13/hanoi_tower 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" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0a267f0ec491fdb572a942f686d34d2c07fa31a7aa5af7841c5b5e7b64f79261 [INFO] running `Command { std: "docker" "start" "-a" "0a267f0ec491fdb572a942f686d34d2c07fa31a7aa5af7841c5b5e7b64f79261", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0a267f0ec491fdb572a942f686d34d2c07fa31a7aa5af7841c5b5e7b64f79261", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0a267f0ec491fdb572a942f686d34d2c07fa31a7aa5af7841c5b5e7b64f79261", kill_on_drop: false }` [INFO] [stdout] 0a267f0ec491fdb572a942f686d34d2c07fa31a7aa5af7841c5b5e7b64f79261 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 582e9652cfd81f6188ceab0d941ad8334c7ee256bf4eab805b3d08959e4023c5 [INFO] running `Command { std: "docker" "start" "-a" "582e9652cfd81f6188ceab0d941ad8334c7ee256bf4eab805b3d08959e4023c5", kill_on_drop: false }` [INFO] [stderr] Checking hanoi_tower v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/lib.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/lib.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::iter` [INFO] [stdout] --> src/engine.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::iter; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::iter` [INFO] [stdout] --> src/engine.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::iter; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/engine.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/engine.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/engine.rs:67:13 [INFO] [stdout] | [INFO] [stdout] 67 | let mut s1 = Stack::new(n_disks, true); [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/engine.rs:68:13 [INFO] [stdout] | [INFO] [stdout] 68 | let mut s2 = Stack::new(n_disks, false); [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/engine.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | let mut s3 = Stack::new(n_disks, false); [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/engine.rs:70:13 [INFO] [stdout] | [INFO] [stdout] 70 | let mut stacks = [s1,s2,s3]; [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/engine.rs:75:13 [INFO] [stdout] | [INFO] [stdout] 75 | let mut string: String = String::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/engine.rs:67:13 [INFO] [stdout] | [INFO] [stdout] 67 | let mut s1 = Stack::new(n_disks, true); [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/engine.rs:68:13 [INFO] [stdout] | [INFO] [stdout] 68 | let mut s2 = Stack::new(n_disks, false); [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/engine.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | let mut s3 = Stack::new(n_disks, false); [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/engine.rs:70:13 [INFO] [stdout] | [INFO] [stdout] 70 | let mut stacks = [s1,s2,s3]; [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/engine.rs:75:13 [INFO] [stdout] | [INFO] [stdout] 75 | let mut string: String = String::new(); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `error` [INFO] [stdout] --> src/lib.rs:23:17 [INFO] [stdout] | [INFO] [stdout] 23 | Err(error) => Err("Error parsing the input"), [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_error` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `error` [INFO] [stdout] --> src/lib.rs:23:17 [INFO] [stdout] | [INFO] [stdout] 23 | Err(error) => Err("Error parsing the input"), [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_error` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `number` is never read [INFO] [stdout] --> src/engine.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct Disk{ [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 6 | pub number: i32, [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 `number` is never read [INFO] [stdout] --> src/engine.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct Disk{ [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 6 | pub number: i32, [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 `fill` is never read [INFO] [stdout] --> src/engine.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 24 | pub struct Stack{ [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 25 | pub disks: Vec, [INFO] [stdout] 26 | pub fill: bool, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `move_disk` is never used [INFO] [stdout] --> src/engine.rs:45:12 [INFO] [stdout] | [INFO] [stdout] 29 | impl Stack { [INFO] [stdout] | ---------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 45 | pub fn move_disk(&self, other_stack: Stack) -> Result<(), &'static str>{ [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `height` is never read [INFO] [stdout] --> src/engine.rs:57:5 [INFO] [stdout] | [INFO] [stdout] 55 | pub struct Board{ [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 56 | pub stacks: [Stack; 3], [INFO] [stdout] 57 | height: i32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `fill` is never read [INFO] [stdout] --> src/engine.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 24 | pub struct Stack{ [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 25 | pub disks: Vec, [INFO] [stdout] 26 | pub fill: bool, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `move_disk` is never used [INFO] [stdout] --> src/engine.rs:45:12 [INFO] [stdout] | [INFO] [stdout] 29 | impl Stack { [INFO] [stdout] | ---------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 45 | pub fn move_disk(&self, other_stack: Stack) -> Result<(), &'static str>{ [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `height` is never read [INFO] [stdout] --> src/engine.rs:57:5 [INFO] [stdout] | [INFO] [stdout] 55 | pub struct Board{ [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 56 | pub stacks: [Stack; 3], [INFO] [stdout] 57 | height: i32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:53:9 [INFO] [stdout] | [INFO] [stdout] 53 | / match prompt().as_str() { [INFO] [stdout] 54 | | "A" => play(&config), [INFO] [stdout] 55 | | "B" | "exit" => break Ok(()), [INFO] [stdout] 56 | | _ => todo!(), [INFO] [stdout] 57 | | }; [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 _ = match prompt().as_str() { [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:53:9 [INFO] [stdout] | [INFO] [stdout] 53 | / match prompt().as_str() { [INFO] [stdout] 54 | | "A" => play(&config), [INFO] [stdout] 55 | | "B" | "exit" => break Ok(()), [INFO] [stdout] 56 | | _ => todo!(), [INFO] [stdout] 57 | | }; [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 _ = match prompt().as_str() { [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s [INFO] running `Command { std: "docker" "inspect" "582e9652cfd81f6188ceab0d941ad8334c7ee256bf4eab805b3d08959e4023c5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "582e9652cfd81f6188ceab0d941ad8334c7ee256bf4eab805b3d08959e4023c5", kill_on_drop: false }` [INFO] [stdout] 582e9652cfd81f6188ceab0d941ad8334c7ee256bf4eab805b3d08959e4023c5