[INFO] cloning repository https://github.com/hugo-belloc/annoying-tower-of-hanoi [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hugo-belloc/annoying-tower-of-hanoi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhugo-belloc%2Fannoying-tower-of-hanoi", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhugo-belloc%2Fannoying-tower-of-hanoi'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2b5f0d8b3051c7e71a676e49f073a52b7695f171 [INFO] checking hugo-belloc/annoying-tower-of-hanoi against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhugo-belloc%2Fannoying-tower-of-hanoi" "/workspace/builds/worker-9/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/hugo-belloc/annoying-tower-of-hanoi on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/hugo-belloc/annoying-tower-of-hanoi [INFO] finished tweaking git repo https://github.com/hugo-belloc/annoying-tower-of-hanoi [INFO] tweaked toml for git repo https://github.com/hugo-belloc/annoying-tower-of-hanoi written to /workspace/builds/worker-9/source/Cargo.toml [INFO] crate git repo https://github.com/hugo-belloc/annoying-tower-of-hanoi already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8e2c1a3817f397edf3970ccbfa3044a5d0d0a748fe1798db453a75c276470bf0 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "8e2c1a3817f397edf3970ccbfa3044a5d0d0a748fe1798db453a75c276470bf0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8e2c1a3817f397edf3970ccbfa3044a5d0d0a748fe1798db453a75c276470bf0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8e2c1a3817f397edf3970ccbfa3044a5d0d0a748fe1798db453a75c276470bf0", kill_on_drop: false }` [INFO] [stdout] 8e2c1a3817f397edf3970ccbfa3044a5d0d0a748fe1798db453a75c276470bf0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 2d57c665a1ad14c7540d0b8cc35b6bfe3d861d6611223d29f02e18c4bdb65e72 [INFO] running `Command { std: "docker" "start" "-a" "2d57c665a1ad14c7540d0b8cc35b6bfe3d861d6611223d29f02e18c4bdb65e72", 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] [stderr] Checking annoying-tower-of-hanoi v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `hanoi_discs` [INFO] [stdout] --> src/lib.rs:129:23 [INFO] [stdout] | [INFO] [stdout] 129 | pub fn write_step(hanoi_discs: &HanoiTowersDiscs, step: usize) { [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hanoi_discs` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `step` [INFO] [stdout] --> src/lib.rs:129:55 [INFO] [stdout] | [INFO] [stdout] 129 | pub fn write_step(hanoi_discs: &HanoiTowersDiscs, step: usize) { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_step` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `src` [INFO] [stdout] --> src/lib.rs:133:23 [INFO] [stdout] | [INFO] [stdout] 133 | pub fn write_move(src: HanoiTower, dest: HanoiTower, move_no: usize) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_src` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `dest` [INFO] [stdout] --> src/lib.rs:133:40 [INFO] [stdout] | [INFO] [stdout] 133 | pub fn write_move(src: HanoiTower, dest: HanoiTower, move_no: usize) { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_dest` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `move_no` [INFO] [stdout] --> src/lib.rs:133:58 [INFO] [stdout] | [INFO] [stdout] 133 | pub fn write_move(src: HanoiTower, dest: HanoiTower, move_no: usize) { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_move_no` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `writer` [INFO] [stdout] --> src/lib.rs:108:5 [INFO] [stdout] | [INFO] [stdout] 108 | writer: &'a mut T, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated constant is never used: `HEADER_HEIGHT` [INFO] [stdout] --> src/lib.rs:112:5 [INFO] [stdout] | [INFO] [stdout] 112 | const HEADER_HEIGHT: usize = 3; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated constant is never used: `FOOTER_HEIGHT` [INFO] [stdout] --> src/lib.rs:113:5 [INFO] [stdout] | [INFO] [stdout] 113 | const FOOTER_HEIGHT: usize = 3; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated constant is never used: `EXTRA_WIDTH` [INFO] [stdout] --> src/lib.rs:114:5 [INFO] [stdout] | [INFO] [stdout] 114 | const EXTRA_WIDTH: usize = 12; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated constant is never used: `WIDTH_DEPTH_COEFF` [INFO] [stdout] --> src/lib.rs:115:5 [INFO] [stdout] | [INFO] [stdout] 115 | const WIDTH_DEPTH_COEFF: usize = 6; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated constant is never used: `CHAR_MAX_LENGTH_UTF8` [INFO] [stdout] --> src/lib.rs:116:5 [INFO] [stdout] | [INFO] [stdout] 116 | const CHAR_MAX_LENGTH_UTF8: usize = 3; //Longest char to draw are box drawing chars [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated constant is never used: `DELIMITER` [INFO] [stdout] --> src/lib.rs:117:5 [INFO] [stdout] | [INFO] [stdout] 117 | const DELIMITER: &'static str = "\n"; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hanoi_discs` [INFO] [stdout] --> src/lib.rs:129:23 [INFO] [stdout] | [INFO] [stdout] 129 | pub fn write_step(hanoi_discs: &HanoiTowersDiscs, step: usize) { [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hanoi_discs` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `step` [INFO] [stdout] --> src/lib.rs:129:55 [INFO] [stdout] | [INFO] [stdout] 129 | pub fn write_step(hanoi_discs: &HanoiTowersDiscs, step: usize) { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_step` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `src` [INFO] [stdout] --> src/lib.rs:133:23 [INFO] [stdout] | [INFO] [stdout] 133 | pub fn write_move(src: HanoiTower, dest: HanoiTower, move_no: usize) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_src` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `dest` [INFO] [stdout] --> src/lib.rs:133:40 [INFO] [stdout] | [INFO] [stdout] 133 | pub fn write_move(src: HanoiTower, dest: HanoiTower, move_no: usize) { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_dest` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `move_no` [INFO] [stdout] --> src/lib.rs:133:58 [INFO] [stdout] | [INFO] [stdout] 133 | pub fn write_move(src: HanoiTower, dest: HanoiTower, move_no: usize) { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_move_no` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:327:13 [INFO] [stdout] | [INFO] [stdout] 327 | let mut htd = HanoiTowersDiscs::build(4); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `writer` [INFO] [stdout] --> src/lib.rs:108:5 [INFO] [stdout] | [INFO] [stdout] 108 | writer: &'a mut T, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated constant is never used: `HEADER_HEIGHT` [INFO] [stdout] --> src/lib.rs:112:5 [INFO] [stdout] | [INFO] [stdout] 112 | const HEADER_HEIGHT: usize = 3; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated constant is never used: `FOOTER_HEIGHT` [INFO] [stdout] --> src/lib.rs:113:5 [INFO] [stdout] | [INFO] [stdout] 113 | const FOOTER_HEIGHT: usize = 3; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated constant is never used: `EXTRA_WIDTH` [INFO] [stdout] --> src/lib.rs:114:5 [INFO] [stdout] | [INFO] [stdout] 114 | const EXTRA_WIDTH: usize = 12; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated constant is never used: `WIDTH_DEPTH_COEFF` [INFO] [stdout] --> src/lib.rs:115:5 [INFO] [stdout] | [INFO] [stdout] 115 | const WIDTH_DEPTH_COEFF: usize = 6; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated constant is never used: `CHAR_MAX_LENGTH_UTF8` [INFO] [stdout] --> src/lib.rs:116:5 [INFO] [stdout] | [INFO] [stdout] 116 | const CHAR_MAX_LENGTH_UTF8: usize = 3; //Longest char to draw are box drawing chars [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated constant is never used: `DELIMITER` [INFO] [stdout] --> src/lib.rs:117:5 [INFO] [stdout] | [INFO] [stdout] 117 | const DELIMITER: &'static str = "\n"; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.04s [INFO] running `Command { std: "docker" "inspect" "2d57c665a1ad14c7540d0b8cc35b6bfe3d861d6611223d29f02e18c4bdb65e72", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2d57c665a1ad14c7540d0b8cc35b6bfe3d861d6611223d29f02e18c4bdb65e72", kill_on_drop: false }` [INFO] [stdout] 2d57c665a1ad14c7540d0b8cc35b6bfe3d861d6611223d29f02e18c4bdb65e72