[INFO] cloning repository https://github.com/craccho/cube_rust_example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/craccho/cube_rust_example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcraccho%2Fcube_rust_example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcraccho%2Fcube_rust_example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fd74ccfa52f0118daaf8c52d06181da21564c40e
[INFO] checking craccho/cube_rust_example against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcraccho%2Fcube_rust_example" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/craccho/cube_rust_example
[INFO] finished tweaking git repo https://github.com/craccho/cube_rust_example
[INFO] tweaked toml for git repo https://github.com/craccho/cube_rust_example written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/craccho/cube_rust_example on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/craccho/cube_rust_example 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 139e7c5bcde1d30e3c227269a3260f211b68cc3231059e526adcd31a5735c1b7
[INFO] running `Command { std: "docker" "start" "-a" "139e7c5bcde1d30e3c227269a3260f211b68cc3231059e526adcd31a5735c1b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "139e7c5bcde1d30e3c227269a3260f211b68cc3231059e526adcd31a5735c1b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "139e7c5bcde1d30e3c227269a3260f211b68cc3231059e526adcd31a5735c1b7", kill_on_drop: false }`
[INFO] [stdout] 139e7c5bcde1d30e3c227269a3260f211b68cc3231059e526adcd31a5735c1b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99b1e19c830cb5bcb2d7a144b161763f79dbe5936b56d4f585229b7c5fa34a09
[INFO] running `Command { std: "docker" "start" "-a" "99b1e19c830cb5bcb2d7a144b161763f79dbe5936b56d4f585229b7c5fa34a09", kill_on_drop: false }`
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking cube v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:892:21
[INFO] [stdout]     |
[INFO] [stdout] 892 |                 let mut no = *no;
[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: value assigned to `depth` is never read
[INFO] [stdout]    --> src/main.rs:894:33
[INFO] [stdout]     |
[INFO] [stdout] 894 |                 let mut depth = false;
[INFO] [stdout]     |                                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sequence4`
[INFO] [stdout]     --> src/main.rs:1084:9
[INFO] [stdout]      |
[INFO] [stdout] 1084 |     let sequence4 = vec![
[INFO] [stdout]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sequence4`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sequence5`
[INFO] [stdout]     --> src/main.rs:1092:9
[INFO] [stdout]      |
[INFO] [stdout] 1092 |     let sequence5 = vec![
[INFO] [stdout]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sequence5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sc2`
[INFO] [stdout]     --> src/main.rs:1109:9
[INFO] [stdout]      |
[INFO] [stdout] 1109 |     let sc2 = Perm::from_scramble("R", solver);
[INFO] [stdout]      |         ^^^ help: if this is intentional, prefix it with an underscore: `_sc2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:892:21
[INFO] [stdout]     |
[INFO] [stdout] 892 |                 let mut no = *no;
[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: value assigned to `depth` is never read
[INFO] [stdout]    --> src/main.rs:894:33
[INFO] [stdout]     |
[INFO] [stdout] 894 |                 let mut depth = false;
[INFO] [stdout]     |                                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Rotation` is never used
[INFO] [stdout]   --> src/main.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 19 | enum Rotation {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `inverse` is never used
[INFO] [stdout]   --> src/main.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl Rotation {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] 24 |     fn inverse(self) -> Rotation {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rotate_sticker` is never used
[INFO] [stdout]   --> src/main.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn rotate_sticker(s: u8, r: &Rotation) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `rotate` is never used
[INFO] [stdout]   --> src/main.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 94 | impl Surface {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 95 |     fn rotate(&self, rotation: &Rotation) -> Self {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `rotate`, `rotation`, and `reverse` are never used
[INFO] [stdout]    --> src/main.rs:156:8
[INFO] [stdout]     |
[INFO] [stdout] 155 | impl Orientation {
[INFO] [stdout]     | ---------------- methods in this implementation
[INFO] [stdout] 156 |     fn rotate(&mut self, rotation: &Rotation) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 161 |     fn rotation(&self) -> Vec<Rotation> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 |     fn reverse(&self) -> Vec<Rotation> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:235:8
[INFO] [stdout]     |
[INFO] [stdout] 234 | impl Perm {
[INFO] [stdout]     | --------- associated function in this implementation
[INFO] [stdout] 235 |     fn new() -> Perm {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `rotate` and `orient` are never used
[INFO] [stdout]     --> src/main.rs:640:8
[INFO] [stdout]      |
[INFO] [stdout]  468 | impl Cube {
[INFO] [stdout]      | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  640 |     fn rotate(&mut self, rotation: &Rotation) {
[INFO] [stdout]      |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1017 |     fn orient(&mut self, o: &Orientation) {
[INFO] [stdout]      |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sequence4`
[INFO] [stdout]     --> src/main.rs:1084:9
[INFO] [stdout]      |
[INFO] [stdout] 1084 |     let sequence4 = vec![
[INFO] [stdout]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sequence4`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sequence5`
[INFO] [stdout]     --> src/main.rs:1092:9
[INFO] [stdout]      |
[INFO] [stdout] 1092 |     let sequence5 = vec![
[INFO] [stdout]      |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sequence5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sc2`
[INFO] [stdout]     --> src/main.rs:1109:9
[INFO] [stdout]      |
[INFO] [stdout] 1109 |     let sc2 = Perm::from_scramble("R", solver);
[INFO] [stdout]      |         ^^^ help: if this is intentional, prefix it with an underscore: `_sc2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Rotation` is never used
[INFO] [stdout]   --> src/main.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 19 | enum Rotation {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `inverse` is never used
[INFO] [stdout]   --> src/main.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl Rotation {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] 24 |     fn inverse(self) -> Rotation {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rotate_sticker` is never used
[INFO] [stdout]   --> src/main.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn rotate_sticker(s: u8, r: &Rotation) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `rotate` is never used
[INFO] [stdout]   --> src/main.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 94 | impl Surface {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 95 |     fn rotate(&self, rotation: &Rotation) -> Self {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `rotate`, `rotation`, and `reverse` are never used
[INFO] [stdout]    --> src/main.rs:156:8
[INFO] [stdout]     |
[INFO] [stdout] 155 | impl Orientation {
[INFO] [stdout]     | ---------------- methods in this implementation
[INFO] [stdout] 156 |     fn rotate(&mut self, rotation: &Rotation) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 161 |     fn rotation(&self) -> Vec<Rotation> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 |     fn reverse(&self) -> Vec<Rotation> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:235:8
[INFO] [stdout]     |
[INFO] [stdout] 234 | impl Perm {
[INFO] [stdout]     | --------- associated function in this implementation
[INFO] [stdout] 235 |     fn new() -> Perm {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `rotate` and `orient` are never used
[INFO] [stdout]     --> src/main.rs:640:8
[INFO] [stdout]      |
[INFO] [stdout]  468 | impl Cube {
[INFO] [stdout]      | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  640 |     fn rotate(&mut self, rotation: &Rotation) {
[INFO] [stdout]      |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1017 |     fn orient(&mut self, o: &Orientation) {
[INFO] [stdout]      |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.84s
[INFO] running `Command { std: "docker" "inspect" "99b1e19c830cb5bcb2d7a144b161763f79dbe5936b56d4f585229b7c5fa34a09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99b1e19c830cb5bcb2d7a144b161763f79dbe5936b56d4f585229b7c5fa34a09", kill_on_drop: false }`
[INFO] [stdout] 99b1e19c830cb5bcb2d7a144b161763f79dbe5936b56d4f585229b7c5fa34a09
