[INFO] cloning repository https://github.com/CaioPiccirillo/sudoku-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CaioPiccirillo/sudoku-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCaioPiccirillo%2Fsudoku-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCaioPiccirillo%2Fsudoku-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d2fa6ef5dc1a0dcea371e85e50a54b91e15a92bf
[INFO] checking CaioPiccirillo/sudoku-rust against master#c9228570668803e3e6402770d55f23a12c9ae686 for pr-79472
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCaioPiccirillo%2Fsudoku-rust" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CaioPiccirillo/sudoku-rust on toolchain c9228570668803e3e6402770d55f23a12c9ae686
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CaioPiccirillo/sudoku-rust
[INFO] finished tweaking git repo https://github.com/CaioPiccirillo/sudoku-rust
[INFO] tweaked toml for git repo https://github.com/CaioPiccirillo/sudoku-rust written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/CaioPiccirillo/sudoku-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 683a4d1ade56c7dab21deec532b5ad6e41a9f6837af53f391188988cb80de7b1
[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" "683a4d1ade56c7dab21deec532b5ad6e41a9f6837af53f391188988cb80de7b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "683a4d1ade56c7dab21deec532b5ad6e41a9f6837af53f391188988cb80de7b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "683a4d1ade56c7dab21deec532b5ad6e41a9f6837af53f391188988cb80de7b1", kill_on_drop: false }`
[INFO] [stdout] 683a4d1ade56c7dab21deec532b5ad6e41a9f6837af53f391188988cb80de7b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb2f00a6786ddbe135dcd6d47965fac4db4e84b8ee216808b9d8516a02e86459
[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" "bb2f00a6786ddbe135dcd6d47965fac4db4e84b8ee216808b9d8516a02e86459", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling const_fn v0.4.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking weezl v0.1.3
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]     Checking ttf-parser v0.6.2
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking bytemuck v1.4.1
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking ab_glyph_rasterizer v0.1.4
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]     Checking gif v0.11.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking png v0.16.7
[INFO] [stderr]     Checking owned_ttf_parser v0.6.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rusttype v0.9.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking rulinalg v0.4.2
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking tiff v0.6.0
[INFO] [stderr]     Checking image v0.23.11
[INFO] [stderr]     Checking imageproc v0.22.0
[INFO] [stderr]     Checking sudoku-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/reader.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         todo!();
[INFO] [stdout]    |         -------- any code following this expression is unreachable
[INFO] [stdout] 19 |         self.img.save("assets/test.png").unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/reader.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         todo!();
[INFO] [stdout]    |         -------- any code following this expression is unreachable
[INFO] [stdout] 19 |         self.img.save("assets/test.png").unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]   --> src/reader.rs:17:33
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn process_image(&self, board: sudoku::Sudoku) {
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/reader.rs:25:19
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]   --> src/reader.rs:17:33
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn process_image(&self, board: sudoku::Sudoku) {
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/reader.rs:25:19
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_image`
[INFO] [stdout]   --> src/reader.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn read_image(&mut self, path: String) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `process_image`
[INFO] [stdout]   --> src/reader.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn process_image(&self, board: sudoku::Sudoku) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solver`
[INFO] [stdout]  --> src/solver.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Solver {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_data`
[INFO] [stdout]  --> src/solver.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fn read_data() {todo!();}
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Writer`
[INFO] [stdout]  --> src/writer.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Writer{
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/writer.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub fn new() -> Self { Self {  } }
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_value_using_row_col`
[INFO] [stdout]   --> src/sudoku.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn update_value_using_row_col(&mut self, row: char, col: char, value: u8) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_image`
[INFO] [stdout]   --> src/reader.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn read_image(&mut self, path: String) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `process_image`
[INFO] [stdout]   --> src/reader.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn process_image(&self, board: sudoku::Sudoku) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solver`
[INFO] [stdout]  --> src/solver.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Solver {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_data`
[INFO] [stdout]  --> src/solver.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fn read_data() {todo!();}
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Writer`
[INFO] [stdout]  --> src/writer.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Writer{
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/writer.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub fn new() -> Self { Self {  } }
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_value_using_row_col`
[INFO] [stdout]   --> src/sudoku.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn update_value_using_row_col(&mut self, row: char, col: char, value: u8) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.58s
[INFO] running `Command { std: "docker" "inspect" "bb2f00a6786ddbe135dcd6d47965fac4db4e84b8ee216808b9d8516a02e86459", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb2f00a6786ddbe135dcd6d47965fac4db4e84b8ee216808b9d8516a02e86459", kill_on_drop: false }`
[INFO] [stdout] bb2f00a6786ddbe135dcd6d47965fac4db4e84b8ee216808b9d8516a02e86459