[INFO] cloning repository https://github.com/potzko/square_root_walk
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/potzko/square_root_walk" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpotzko%2Fsquare_root_walk", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpotzko%2Fsquare_root_walk'...
[INFO] [stderr] error: copy-fd: write returned: No space left on device
[INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/pre-receive.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpotzko%2Fsquare_root_walk/hooks/pre-receive.sample': No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/potzko/square_root_walk
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/potzko/square_root_walk" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpotzko%2Fsquare_root_walk", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpotzko%2Fsquare_root_walk'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bea6f01af0e57b317e63077cbe7b034d4bd5f4af
[INFO] checking potzko/square_root_walk against master#613bdd49978298648ed05ace086bd1ecad54b44a for pr-136458
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpotzko%2Fsquare_root_walk" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/potzko/square_root_walk on toolchain 613bdd49978298648ed05ace086bd1ecad54b44a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+613bdd49978298648ed05ace086bd1ecad54b44a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/potzko/square_root_walk
[INFO] finished tweaking git repo https://github.com/potzko/square_root_walk
[INFO] tweaked toml for git repo https://github.com/potzko/square_root_walk written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/potzko/square_root_walk 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" "+613bdd49978298648ed05ace086bd1ecad54b44a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+613bdd49978298648ed05ace086bd1ecad54b44a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] adf0f8a3f684ce6c78907c98ec24d3ab59b41804ad87fef7bb8eef83cfe11c73
[INFO] running `Command { std: "docker" "start" "-a" "adf0f8a3f684ce6c78907c98ec24d3ab59b41804ad87fef7bb8eef83cfe11c73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adf0f8a3f684ce6c78907c98ec24d3ab59b41804ad87fef7bb8eef83cfe11c73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adf0f8a3f684ce6c78907c98ec24d3ab59b41804ad87fef7bb8eef83cfe11c73", kill_on_drop: false }`
[INFO] [stdout] adf0f8a3f684ce6c78907c98ec24d3ab59b41804ad87fef7bb8eef83cfe11c73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+613bdd49978298648ed05ace086bd1ecad54b44a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cec301c0c6035802b2eb43a4c236dbcc3cb243c8a46e11c406167dfac23ec51f
[INFO] running `Command { std: "docker" "start" "-a" "cec301c0c6035802b2eb43a4c236dbcc3cb243c8a46e11c406167dfac23ec51f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling serde_json v1.0.134
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]     Checking half v2.4.1
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking plotters-backend v0.3.7
[INFO] [stderr]     Checking anstyle v1.0.10
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking itoa v1.0.14
[INFO] [stderr]     Checking clap_lex v0.7.4
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking clap_builder v4.5.23
[INFO] [stderr]     Checking crossbeam-deque v0.8.6
[INFO] [stderr]     Checking plotters-svg v0.3.7
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]    Compiling syn v2.0.94
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking is-terminal v0.4.13
[INFO] [stderr]     Checking oorandom v11.1.4
[INFO] [stderr]     Checking once_cell v1.20.2
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking clap v4.5.23
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stderr]     Checking square_root_walk v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/solutions/naive.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn get_walk_length(mut num: f64) -> usize {
[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: function `benchmark_square_root_walk` is never used
[INFO] [stdout]  --> src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn benchmark_square_root_walk(walks: &[(usize, usize)]) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `mappings_depth_to_vals`, `mappings_val_to_depth`, and `last_grouping` are never read
[INFO] [stdout]  --> src/solutions/gen_multi_cache.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct State {
[INFO] [stdout]   |        ----- fields in this struct
[INFO] [stdout] 5 |     mappings_depth_to_vals: Vec<Vec<usize>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     mappings_val_to_depth: Vec<usize>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 7 |     last_grouping: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push` and `get` are never used
[INFO] [stdout]   --> src/solutions/gen_multi_cache.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl State {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn push(&mut self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn get(&mut self, base: usize, ind: usize) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_state` is never used
[INFO] [stdout]   --> src/solutions/gen_multi_cache.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn get_state() -> &'static Mutex<State> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IterGroup` is never constructed
[INFO] [stdout]   --> src/solutions/gen_multi_cache.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | struct IterGroup {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square_root_walk` is never used
[INFO] [stdout]   --> src/solutions/gen_multi_cache.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn square_root_walk(base: usize) -> impl Iterator<Item = usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square_root_walk` is never used
[INFO] [stdout]  --> src/solutions/naive.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn square_root_walk(base: usize) -> impl Iterator<Item = usize> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_walk_length` is never used
[INFO] [stdout]  --> src/solutions/naive.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn get_walk_length(mut num: f64) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `mappings_depth_to_vals`, `mappings_val_to_depth`, and `ind` are never read
[INFO] [stdout]  --> src/solutions/naive_multy_cache.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct State {
[INFO] [stdout]   |        ----- fields in this struct
[INFO] [stdout] 5 |     mappings_depth_to_vals: Vec<Vec<usize>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     mappings_val_to_depth: Vec<usize>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 7 |     ind: usize,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push` and `get` are never used
[INFO] [stdout]   --> src/solutions/naive_multy_cache.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl State {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn push(&mut self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     fn get(&mut self, base: usize, ind: usize) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_state` is never used
[INFO] [stdout]   --> src/solutions/naive_multy_cache.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn get_state() -> &'static Mutex<State> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IterGroup` is never constructed
[INFO] [stdout]   --> src/solutions/naive_multy_cache.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct IterGroup {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square_root_walk` is never used
[INFO] [stdout]   --> src/solutions/naive_multy_cache.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn square_root_walk(base: usize) -> impl Iterator<Item = usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mappings_val_to_depth` is never read
[INFO] [stdout]  --> src/solutions/naive_single_cache.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct State {
[INFO] [stdout]   |        ----- field in this struct
[INFO] [stdout] 5 |     mappings_val_to_depth: Vec<usize>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push` and `get` are never used
[INFO] [stdout]   --> src/solutions/naive_single_cache.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl State {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn push(&mut self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn get(&mut self, val: usize) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_state` is never used
[INFO] [stdout]   --> src/solutions/naive_single_cache.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn get_state() -> &'static Mutex<State> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IterGroup` is never constructed
[INFO] [stdout]   --> src/solutions/naive_single_cache.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct IterGroup {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square_root_walk` is never used
[INFO] [stdout]   --> src/solutions/naive_single_cache.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn square_root_walk(base: usize) -> impl Iterator<Item = usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/solutions/naive.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn get_walk_length(mut num: f64) -> usize {
[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: function `benchmark_square_root_walk` is never used
[INFO] [stdout]  --> src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn benchmark_square_root_walk(walks: &[(usize, usize)]) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `mappings_depth_to_vals`, `mappings_val_to_depth`, and `last_grouping` are never read
[INFO] [stdout]  --> src/solutions/gen_multi_cache.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct State {
[INFO] [stdout]   |        ----- fields in this struct
[INFO] [stdout] 5 |     mappings_depth_to_vals: Vec<Vec<usize>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     mappings_val_to_depth: Vec<usize>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 7 |     last_grouping: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push` and `get` are never used
[INFO] [stdout]   --> src/solutions/gen_multi_cache.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl State {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn push(&mut self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn get(&mut self, base: usize, ind: usize) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_state` is never used
[INFO] [stdout]   --> src/solutions/gen_multi_cache.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn get_state() -> &'static Mutex<State> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IterGroup` is never constructed
[INFO] [stdout]   --> src/solutions/gen_multi_cache.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | struct IterGroup {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square_root_walk` is never used
[INFO] [stdout]   --> src/solutions/gen_multi_cache.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn square_root_walk(base: usize) -> impl Iterator<Item = usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square_root_walk` is never used
[INFO] [stdout]  --> src/solutions/naive.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn square_root_walk(base: usize) -> impl Iterator<Item = usize> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_walk_length` is never used
[INFO] [stdout]  --> src/solutions/naive.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn get_walk_length(mut num: f64) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `mappings_depth_to_vals`, `mappings_val_to_depth`, and `ind` are never read
[INFO] [stdout]  --> src/solutions/naive_multy_cache.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct State {
[INFO] [stdout]   |        ----- fields in this struct
[INFO] [stdout] 5 |     mappings_depth_to_vals: Vec<Vec<usize>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     mappings_val_to_depth: Vec<usize>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 7 |     ind: usize,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push` and `get` are never used
[INFO] [stdout]   --> src/solutions/naive_multy_cache.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl State {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn push(&mut self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     fn get(&mut self, base: usize, ind: usize) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_state` is never used
[INFO] [stdout]   --> src/solutions/naive_multy_cache.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn get_state() -> &'static Mutex<State> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IterGroup` is never constructed
[INFO] [stdout]   --> src/solutions/naive_multy_cache.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct IterGroup {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square_root_walk` is never used
[INFO] [stdout]   --> src/solutions/naive_multy_cache.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn square_root_walk(base: usize) -> impl Iterator<Item = usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mappings_val_to_depth` is never read
[INFO] [stdout]  --> src/solutions/naive_single_cache.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct State {
[INFO] [stdout]   |        ----- field in this struct
[INFO] [stdout] 5 |     mappings_val_to_depth: Vec<usize>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push` and `get` are never used
[INFO] [stdout]   --> src/solutions/naive_single_cache.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl State {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn push(&mut self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn get(&mut self, val: usize) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_state` is never used
[INFO] [stdout]   --> src/solutions/naive_single_cache.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn get_state() -> &'static Mutex<State> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IterGroup` is never constructed
[INFO] [stdout]   --> src/solutions/naive_single_cache.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct IterGroup {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `square_root_walk` is never used
[INFO] [stdout]   --> src/solutions/naive_single_cache.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn square_root_walk(base: usize) -> impl Iterator<Item = usize> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 27.58s
[INFO] running `Command { std: "docker" "inspect" "cec301c0c6035802b2eb43a4c236dbcc3cb243c8a46e11c406167dfac23ec51f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cec301c0c6035802b2eb43a4c236dbcc3cb243c8a46e11c406167dfac23ec51f", kill_on_drop: false }`
[INFO] [stdout] cec301c0c6035802b2eb43a4c236dbcc3cb243c8a46e11c406167dfac23ec51f