[INFO] cloning repository https://github.com/edave64/ku
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/edave64/ku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedave64%2Fku", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedave64%2Fku'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aa968056ae279abcbfeeb2c06c0c4867080772e1
[INFO] testing edave64/ku against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedave64%2Fku" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/edave64/ku on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/edave64/ku
[INFO] finished tweaking git repo https://github.com/edave64/ku
[INFO] tweaked toml for git repo https://github.com/edave64/ku written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/edave64/ku already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 189b07d965472fe7d7c54e69e65fc1640192195098f8a1153e85af1e5429377c
[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" "189b07d965472fe7d7c54e69e65fc1640192195098f8a1153e85af1e5429377c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "189b07d965472fe7d7c54e69e65fc1640192195098f8a1153e85af1e5429377c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "189b07d965472fe7d7c54e69e65fc1640192195098f8a1153e85af1e5429377c", kill_on_drop: false }`
[INFO] [stdout] 189b07d965472fe7d7c54e69e65fc1640192195098f8a1153e85af1e5429377c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] 4268c5098d26680986b9033a5cfe1724eaf9e60b4e7167f9aa6043ebbdfbcd42
[INFO] running `Command { std: "docker" "start" "-a" "4268c5098d26680986b9033a5cfe1724eaf9e60b4e7167f9aa6043ebbdfbcd42", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.104
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling ku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `hole_length` is never read
[INFO] [stdout]    --> src/codex/predictive.rs:138:13
[INFO] [stdout]     |
[INFO] [stdout] 138 |             hole_length = 0;
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/codex/predictive.rs:176:17
[INFO] [stdout]     |
[INFO] [stdout] 176 |             for i in 0..hole_size {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `BitWriter`
[INFO] [stdout]  --> src/tools.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct BitWriter {
[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: `new`
[INFO] [stdout]  --> src/tools.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn new() -> BitWriter {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write`
[INFO] [stdout]   --> src/tools.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn write (&mut self, value: u8, length: u8) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_u16`
[INFO] [stdout]   --> src/tools.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn write_u16 (&mut self, value: u16, length: u8) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `disolve`
[INFO] [stdout]   --> src/tools.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn disolve (mut self) -> Vec<u8> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `disolve_drop_zeros`
[INFO] [stdout]   --> src/tools.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn disolve_drop_zeros (mut self) -> Vec<u8> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `BitReader`
[INFO] [stdout]   --> src/tools.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub struct BitReader {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/tools.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn new(mut vec: Vec<u8>) -> BitReader {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read`
[INFO] [stdout]   --> src/tools.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn read (&mut self, length: u8) -> u8 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decode`
[INFO] [stdout]   --> src/codex/simple.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn decode(coded: Vec<u8>) -> String {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `PredictorBoard`
[INFO] [stdout]  --> src/codex/predictive.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct PredictorBoard {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `possibilities`
[INFO] [stdout]   --> src/codex/predictive.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn possibilities(&self, i: u8) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mask`
[INFO] [stdout]   --> src/codex/predictive.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |         fn mask (val: u8) -> u16 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set`
[INFO] [stdout]   --> src/codex/predictive.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn set(&mut self, i: u8, val: u8) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pattern_linear`
[INFO] [stdout]   --> src/codex/predictive.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn pattern_linear(i: u8) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pattern_c2`
[INFO] [stdout]   --> src/codex/predictive.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn pattern_c2(i: u8) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pattern_c4`
[INFO] [stdout]   --> src/codex/predictive.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn pattern_c4(i: u8) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pattern_c8`
[INFO] [stdout]   --> src/codex/predictive.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn pattern_c8(i: u8) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pattern_c16`
[INFO] [stdout]   --> src/codex/predictive.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn pattern_c16(i: u8) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `HOLE_ENCODE_BITS`
[INFO] [stdout]   --> src/codex/predictive.rs:67:1
[INFO] [stdout]    |
[INFO] [stdout] 67 | const HOLE_ENCODE_BITS: u8 = 3;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `HOLE_ENCODE_MAX`
[INFO] [stdout]   --> src/codex/predictive.rs:68:1
[INFO] [stdout]    |
[INFO] [stdout] 68 | const HOLE_ENCODE_MAX: u8 = 2u32.pow((HOLE_ENCODE_BITS - 1) as u32) as u8;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CHAIN_ENCODE_BITS`
[INFO] [stdout]   --> src/codex/predictive.rs:69:1
[INFO] [stdout]    |
[INFO] [stdout] 69 | const CHAIN_ENCODE_BITS: u8 = 1;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CHAIN_ENCODE_MAX`
[INFO] [stdout]   --> src/codex/predictive.rs:70:1
[INFO] [stdout]    |
[INFO] [stdout] 70 | const CHAIN_ENCODE_MAX: u8 = 1 as u8;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `encode`
[INFO] [stdout]   --> src/codex/predictive.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn encode(string: &str) -> Result<Vec<u8>, Box<dyn Error>> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decode`
[INFO] [stdout]    --> src/codex/predictive.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 146 | pub fn decode(coded: Vec<u8>) -> String {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_nums`
[INFO] [stdout]   --> src/solver/board.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn to_nums (&self) -> Vec<u8> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `first_unsolved`
[INFO] [stdout]    --> src/solver/board.rs:109:12
[INFO] [stdout]     |
[INFO] [stdout] 109 |     pub fn first_unsolved(&self) -> Option<Cell> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.14s
[INFO] running `Command { std: "docker" "inspect" "4268c5098d26680986b9033a5cfe1724eaf9e60b4e7167f9aa6043ebbdfbcd42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4268c5098d26680986b9033a5cfe1724eaf9e60b4e7167f9aa6043ebbdfbcd42", kill_on_drop: false }`
[INFO] [stdout] 4268c5098d26680986b9033a5cfe1724eaf9e60b4e7167f9aa6043ebbdfbcd42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--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] 9b6467750f9f8bc885144f8bdba8e8100624ee57b68081c8250441736a1272c4
[INFO] running `Command { std: "docker" "start" "-a" "9b6467750f9f8bc885144f8bdba8e8100624ee57b68081c8250441736a1272c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling ku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `hole_length` is never read
[INFO] [stdout]    --> src/codex/predictive.rs:138:13
[INFO] [stdout]     |
[INFO] [stdout] 138 |             hole_length = 0;
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/codex/predictive.rs:176:17
[INFO] [stdout]     |
[INFO] [stdout] 176 |             for i in 0..hole_size {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `BitWriter`
[INFO] [stdout]  --> src/tools.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct BitWriter {
[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: `new`
[INFO] [stdout]  --> src/tools.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn new() -> BitWriter {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write`
[INFO] [stdout]   --> src/tools.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn write (&mut self, value: u8, length: u8) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_u16`
[INFO] [stdout]   --> src/tools.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn write_u16 (&mut self, value: u16, length: u8) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `disolve`
[INFO] [stdout]   --> src/tools.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn disolve (mut self) -> Vec<u8> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `disolve_drop_zeros`
[INFO] [stdout]   --> src/tools.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn disolve_drop_zeros (mut self) -> Vec<u8> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `BitReader`
[INFO] [stdout]   --> src/tools.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub struct BitReader {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/tools.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn new(mut vec: Vec<u8>) -> BitReader {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read`
[INFO] [stdout]   --> src/tools.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn read (&mut self, length: u8) -> u8 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decode`
[INFO] [stdout]   --> src/codex/simple.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn decode(coded: Vec<u8>) -> String {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `PredictorBoard`
[INFO] [stdout]  --> src/codex/predictive.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct PredictorBoard {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `possibilities`
[INFO] [stdout]   --> src/codex/predictive.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn possibilities(&self, i: u8) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mask`
[INFO] [stdout]   --> src/codex/predictive.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |         fn mask (val: u8) -> u16 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set`
[INFO] [stdout]   --> src/codex/predictive.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn set(&mut self, i: u8, val: u8) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pattern_linear`
[INFO] [stdout]   --> src/codex/predictive.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn pattern_linear(i: u8) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pattern_c2`
[INFO] [stdout]   --> src/codex/predictive.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn pattern_c2(i: u8) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pattern_c4`
[INFO] [stdout]   --> src/codex/predictive.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn pattern_c4(i: u8) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pattern_c8`
[INFO] [stdout]   --> src/codex/predictive.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn pattern_c8(i: u8) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pattern_c16`
[INFO] [stdout]   --> src/codex/predictive.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn pattern_c16(i: u8) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `HOLE_ENCODE_BITS`
[INFO] [stdout]   --> src/codex/predictive.rs:67:1
[INFO] [stdout]    |
[INFO] [stdout] 67 | const HOLE_ENCODE_BITS: u8 = 3;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `HOLE_ENCODE_MAX`
[INFO] [stdout]   --> src/codex/predictive.rs:68:1
[INFO] [stdout]    |
[INFO] [stdout] 68 | const HOLE_ENCODE_MAX: u8 = 2u32.pow((HOLE_ENCODE_BITS - 1) as u32) as u8;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CHAIN_ENCODE_BITS`
[INFO] [stdout]   --> src/codex/predictive.rs:69:1
[INFO] [stdout]    |
[INFO] [stdout] 69 | const CHAIN_ENCODE_BITS: u8 = 1;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CHAIN_ENCODE_MAX`
[INFO] [stdout]   --> src/codex/predictive.rs:70:1
[INFO] [stdout]    |
[INFO] [stdout] 70 | const CHAIN_ENCODE_MAX: u8 = 1 as u8;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `encode`
[INFO] [stdout]   --> src/codex/predictive.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn encode(string: &str) -> Result<Vec<u8>, Box<dyn Error>> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decode`
[INFO] [stdout]    --> src/codex/predictive.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 146 | pub fn decode(coded: Vec<u8>) -> String {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_nums`
[INFO] [stdout]   --> src/solver/board.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn to_nums (&self) -> Vec<u8> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `first_unsolved`
[INFO] [stdout]    --> src/solver/board.rs:109:12
[INFO] [stdout]     |
[INFO] [stdout] 109 |     pub fn first_unsolved(&self) -> Option<Cell> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.53s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/ku-1ced2a9af447038c)
[INFO] running `Command { std: "docker" "inspect" "9b6467750f9f8bc885144f8bdba8e8100624ee57b68081c8250441736a1272c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b6467750f9f8bc885144f8bdba8e8100624ee57b68081c8250441736a1272c4", kill_on_drop: false }`
[INFO] [stdout] 9b6467750f9f8bc885144f8bdba8e8100624ee57b68081c8250441736a1272c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", 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] aa420df8b0ca355e27c869f087ce2dd85f8a97ee6d826228f6d3aa8fe0d1be8c
[INFO] running `Command { std: "docker" "start" "-a" "aa420df8b0ca355e27c869f087ce2dd85f8a97ee6d826228f6d3aa8fe0d1be8c", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `hole_length` is never read
[INFO] [stderr]    --> src/codex/predictive.rs:138:13
[INFO] [stderr]     |
[INFO] [stderr] 138 |             hole_length = 0;
[INFO] [stderr]     |             ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/codex/predictive.rs:176:17
[INFO] [stderr]     |
[INFO] [stderr] 176 |             for i in 0..hole_size {
[INFO] [stderr]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `BitWriter`
[INFO] [stderr]  --> src/tools.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct BitWriter {
[INFO] [stderr]   |            ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/tools.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn new() -> BitWriter {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `write`
[INFO] [stderr]   --> src/tools.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn write (&mut self, value: u8, length: u8) {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `write_u16`
[INFO] [stderr]   --> src/tools.rs:26:12
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn write_u16 (&mut self, value: u16, length: u8) {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `disolve`
[INFO] [stderr]   --> src/tools.rs:35:12
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub fn disolve (mut self) -> Vec<u8> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `disolve_drop_zeros`
[INFO] [stderr]   --> src/tools.rs:43:12
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn disolve_drop_zeros (mut self) -> Vec<u8> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `BitReader`
[INFO] [stderr]   --> src/tools.rs:56:12
[INFO] [stderr]    |
[INFO] [stderr] 56 | pub struct BitReader {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/tools.rs:63:12
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn new(mut vec: Vec<u8>) -> BitReader {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `read`
[INFO] [stderr]   --> src/tools.rs:73:12
[INFO] [stderr]    |
[INFO] [stderr] 73 |     pub fn read (&mut self, length: u8) -> u8 {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `decode`
[INFO] [stderr]   --> src/codex/simple.rs:71:8
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn decode(coded: Vec<u8>) -> String {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PredictorBoard`
[INFO] [stderr]  --> src/codex/predictive.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | struct PredictorBoard {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `possibilities`
[INFO] [stderr]   --> src/codex/predictive.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn possibilities(&self, i: u8) -> Vec<u8> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mask`
[INFO] [stderr]   --> src/codex/predictive.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 |         fn mask (val: u8) -> u16 {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set`
[INFO] [stderr]   --> src/codex/predictive.rs:42:8
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn set(&mut self, i: u8, val: u8) {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pattern_linear`
[INFO] [stderr]   --> src/codex/predictive.rs:47:8
[INFO] [stderr]    |
[INFO] [stderr] 47 | pub fn pattern_linear(i: u8) -> u8 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pattern_c2`
[INFO] [stderr]   --> src/codex/predictive.rs:51:8
[INFO] [stderr]    |
[INFO] [stderr] 51 | pub fn pattern_c2(i: u8) -> u8 {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pattern_c4`
[INFO] [stderr]   --> src/codex/predictive.rs:55:8
[INFO] [stderr]    |
[INFO] [stderr] 55 | pub fn pattern_c4(i: u8) -> u8 {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pattern_c8`
[INFO] [stderr]   --> src/codex/predictive.rs:59:8
[INFO] [stderr]    |
[INFO] [stderr] 59 | pub fn pattern_c8(i: u8) -> u8 {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pattern_c16`
[INFO] [stderr]   --> src/codex/predictive.rs:63:8
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn pattern_c16(i: u8) -> u8 {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `HOLE_ENCODE_BITS`
[INFO] [stderr]   --> src/codex/predictive.rs:67:1
[INFO] [stderr]    |
[INFO] [stderr] 67 | const HOLE_ENCODE_BITS: u8 = 3;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `HOLE_ENCODE_MAX`
[INFO] [stderr]   --> src/codex/predictive.rs:68:1
[INFO] [stderr]    |
[INFO] [stderr] 68 | const HOLE_ENCODE_MAX: u8 = 2u32.pow((HOLE_ENCODE_BITS - 1) as u32) as u8;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `CHAIN_ENCODE_BITS`
[INFO] [stderr]   --> src/codex/predictive.rs:69:1
[INFO] [stderr]    |
[INFO] [stderr] 69 | const CHAIN_ENCODE_BITS: u8 = 1;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `CHAIN_ENCODE_MAX`
[INFO] [stderr]   --> src/codex/predictive.rs:70:1
[INFO] [stderr]    |
[INFO] [stderr] 70 | const CHAIN_ENCODE_MAX: u8 = 1 as u8;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `encode`
[INFO] [stderr]   --> src/codex/predictive.rs:72:8
[INFO] [stderr]    |
[INFO] [stderr] 72 | pub fn encode(string: &str) -> Result<Vec<u8>, Box<dyn Error>> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `decode`
[INFO] [stderr]    --> src/codex/predictive.rs:146:8
[INFO] [stderr]     |
[INFO] [stderr] 146 | pub fn decode(coded: Vec<u8>) -> String {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `to_nums`
[INFO] [stderr]   --> src/solver/board.rs:64:12
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn to_nums (&self) -> Vec<u8> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `first_unsolved`
[INFO] [stderr]    --> src/solver/board.rs:109:12
[INFO] [stderr]     |
[INFO] [stderr] 109 |     pub fn first_unsolved(&self) -> Option<Cell> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `ku` (bin "ku" test) generated 29 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/ku-1ced2a9af447038c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "aa420df8b0ca355e27c869f087ce2dd85f8a97ee6d826228f6d3aa8fe0d1be8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa420df8b0ca355e27c869f087ce2dd85f8a97ee6d826228f6d3aa8fe0d1be8c", kill_on_drop: false }`
[INFO] [stdout] aa420df8b0ca355e27c869f087ce2dd85f8a97ee6d826228f6d3aa8fe0d1be8c