[INFO] cloning repository https://github.com/Suibeom/SudokuThings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Suibeom/SudokuThings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSuibeom%2FSudokuThings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSuibeom%2FSudokuThings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a948f7d9eb5a5b6c2932bcf1bad74b7be26c078
[INFO] testing Suibeom/SudokuThings against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSuibeom%2FSudokuThings" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Suibeom/SudokuThings on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Suibeom/SudokuThings
[INFO] finished tweaking git repo https://github.com/Suibeom/SudokuThings
[INFO] tweaked toml for git repo https://github.com/Suibeom/SudokuThings written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/Suibeom/SudokuThings already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mio-named-pipes v0.1.7
[INFO] [stderr]   Downloaded syn v1.0.39
[INFO] [stderr]   Downloaded hashbrown v0.8.2
[INFO] [stderr]   Downloaded indexmap v1.5.1
[INFO] [stderr]   Downloaded serde_derive v1.0.115
[INFO] [stderr]   Downloaded serde v1.0.115
[INFO] [stderr]   Downloaded tracing-core v0.1.15
[INFO] [stderr]   Downloaded miow v0.3.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", 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] a69ac887541460f7122d885b62991fc2062d78906ac5d568b9a6109db9ba1ffb
[INFO] running `Command { std: "docker" "start" "-a" "a69ac887541460f7122d885b62991fc2062d78906ac5d568b9a6109db9ba1ffb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a69ac887541460f7122d885b62991fc2062d78906ac5d568b9a6109db9ba1ffb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a69ac887541460f7122d885b62991fc2062d78906ac5d568b9a6109db9ba1ffb", kill_on_drop: false }`
[INFO] [stdout] a69ac887541460f7122d885b62991fc2062d78906ac5d568b9a6109db9ba1ffb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--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] 91f4b84462ff1a4aca741fc723780a62a0bb701db24a2c9d9c62f8ba35b542e2
[INFO] running `Command { std: "docker" "start" "-a" "91f4b84462ff1a4aca741fc723780a62a0bb701db24a2c9d9c62f8ba35b542e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling indexmap v1.5.1
[INFO] [stderr]    Compiling http v0.2.1
[INFO] [stderr]    Compiling tracing-core v0.1.15
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling tracing v0.1.19
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling signal-hook-registry v1.2.1
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling socket2 v0.3.12
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling tokio v0.2.22
[INFO] [stderr]    Compiling pin-project v0.4.23
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling h2 v0.2.6
[INFO] [stderr]    Compiling hyper v0.13.7
[INFO] [stderr]    Compiling sudokuthings v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `get_box_index`
[INFO] [stdout]    --> src/board.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn get_box_index(idx: usize) -> u8 {
[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: `pencil_out`
[INFO] [stdout]    --> src/board.rs:138:8
[INFO] [stdout]     |
[INFO] [stdout] 138 |     fn pencil_out(&self, idx: usize, pencilmarks: &HashSet<u8>) -> Board {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `place`
[INFO] [stdout]    --> src/board.rs:155:8
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn place(&self, idx: usize, digit: u8) -> Board {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `place_derived_pencilmarks`
[INFO] [stdout]    --> src/board.rs:427:4
[INFO] [stdout]     |
[INFO] [stdout] 427 | fn place_derived_pencilmarks(board: Board, current_box: &SudokuBox) -> Board {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `resolve_subset_pencilmarks`
[INFO] [stdout]    --> src/board.rs:507:4
[INFO] [stdout]     |
[INFO] [stdout] 507 | fn resolve_subset_pencilmarks(board: Board, current_box: &SudokuBox) -> Board {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hello_world`
[INFO] [stdout]  --> src/server.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | async fn hello_world(_req: Request<Body>) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]   |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 25s
[INFO] running `Command { std: "docker" "inspect" "91f4b84462ff1a4aca741fc723780a62a0bb701db24a2c9d9c62f8ba35b542e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91f4b84462ff1a4aca741fc723780a62a0bb701db24a2c9d9c62f8ba35b542e2", kill_on_drop: false }`
[INFO] [stdout] 91f4b84462ff1a4aca741fc723780a62a0bb701db24a2c9d9c62f8ba35b542e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f52e2604862c25f1fa82fa772779610205ef5ad9ae594a138d92c4f0a673f38d
[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" "f52e2604862c25f1fa82fa772779610205ef5ad9ae594a138d92c4f0a673f38d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling sudokuthings v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `get_box_index`
[INFO] [stdout]    --> src/board.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn get_box_index(idx: usize) -> u8 {
[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: `pencil_out`
[INFO] [stdout]    --> src/board.rs:138:8
[INFO] [stdout]     |
[INFO] [stdout] 138 |     fn pencil_out(&self, idx: usize, pencilmarks: &HashSet<u8>) -> Board {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `place`
[INFO] [stdout]    --> src/board.rs:155:8
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn place(&self, idx: usize, digit: u8) -> Board {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `place_derived_pencilmarks`
[INFO] [stdout]    --> src/board.rs:427:4
[INFO] [stdout]     |
[INFO] [stdout] 427 | fn place_derived_pencilmarks(board: Board, current_box: &SudokuBox) -> Board {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `resolve_subset_pencilmarks`
[INFO] [stdout]    --> src/board.rs:507:4
[INFO] [stdout]     |
[INFO] [stdout] 507 | fn resolve_subset_pencilmarks(board: Board, current_box: &SudokuBox) -> Board {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hello_world`
[INFO] [stdout]  --> src/server.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | async fn hello_world(_req: Request<Body>) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]   |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 19.51s
[INFO] running `Command { std: "docker" "inspect" "f52e2604862c25f1fa82fa772779610205ef5ad9ae594a138d92c4f0a673f38d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f52e2604862c25f1fa82fa772779610205ef5ad9ae594a138d92c4f0a673f38d", kill_on_drop: false }`
[INFO] [stdout] f52e2604862c25f1fa82fa772779610205ef5ad9ae594a138d92c4f0a673f38d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a436ea9b484ac303f3050e6053eaa438e6fea801bc16cfb7398e23db420b4272
[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" "a436ea9b484ac303f3050e6053eaa438e6fea801bc16cfb7398e23db420b4272", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `get_box_index`
[INFO] [stderr]    --> src/board.rs:108:4
[INFO] [stderr]     |
[INFO] [stderr] 108 | fn get_box_index(idx: usize) -> u8 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `pencil_out`
[INFO] [stderr]    --> src/board.rs:138:8
[INFO] [stderr]     |
[INFO] [stderr] 138 |     fn pencil_out(&self, idx: usize, pencilmarks: &HashSet<u8>) -> Board {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `place`
[INFO] [stderr]    --> src/board.rs:155:8
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn place(&self, idx: usize, digit: u8) -> Board {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `place_derived_pencilmarks`
[INFO] [stderr]    --> src/board.rs:427:4
[INFO] [stderr]     |
[INFO] [stderr] 427 | fn place_derived_pencilmarks(board: Board, current_box: &SudokuBox) -> Board {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `resolve_subset_pencilmarks`
[INFO] [stderr]    --> src/board.rs:507:4
[INFO] [stderr]     |
[INFO] [stderr] 507 | fn resolve_subset_pencilmarks(board: Board, current_box: &SudokuBox) -> Board {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hello_world`
[INFO] [stderr]  --> src/server.rs:7:10
[INFO] [stderr]   |
[INFO] [stderr] 7 | async fn hello_world(_req: Request<Body>) -> Result<Response<Body>, Infallible> {
[INFO] [stderr]   |          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `sudokuthings` (bin "sudokuthings" test) generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sudokuthings-3d7a11c7783813af)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test board::tests::test_idx ... ok
[INFO] [stdout] test board::tests::test_things ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a436ea9b484ac303f3050e6053eaa438e6fea801bc16cfb7398e23db420b4272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a436ea9b484ac303f3050e6053eaa438e6fea801bc16cfb7398e23db420b4272", kill_on_drop: false }`
[INFO] [stdout] a436ea9b484ac303f3050e6053eaa438e6fea801bc16cfb7398e23db420b4272