[INFO] cloning repository https://github.com/tristannavi/rust_gp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tristannavi/rust_gp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftristannavi%2Frust_gp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftristannavi%2Frust_gp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5aec66383c806218f50f8672f1770e98498a9de4
[INFO] checking tristannavi/rust_gp against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftristannavi%2Frust_gp" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tristannavi/rust_gp
[INFO] finished tweaking git repo https://github.com/tristannavi/rust_gp
[INFO] tweaked toml for git repo https://github.com/tristannavi/rust_gp written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tristannavi/rust_gp on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tristannavi/rust_gp 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1319eebb036484132c1b2a9b6e07796df38e13a10afcaae450fb8e943714c29a
[INFO] running `Command { std: "docker" "start" "-a" "1319eebb036484132c1b2a9b6e07796df38e13a10afcaae450fb8e943714c29a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1319eebb036484132c1b2a9b6e07796df38e13a10afcaae450fb8e943714c29a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1319eebb036484132c1b2a9b6e07796df38e13a10afcaae450fb8e943714c29a", kill_on_drop: false }`
[INFO] [stdout] 1319eebb036484132c1b2a9b6e07796df38e13a10afcaae450fb8e943714c29a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 909b6a4da3c9449bcb90aab8c8eaf07c1e2640d44c0e2d0a7a72e720c8ec84a7
[INFO] running `Command { std: "docker" "start" "-a" "909b6a4da3c9449bcb90aab8c8eaf07c1e2640d44c0e2d0a7a72e720c8ec84a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.71
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]     Checking anstream v0.6.5
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking either v1.12.0
[INFO] [stderr]     Checking ryu v1.0.16
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking clap_builder v4.4.12
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling syn v2.0.43
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]    Compiling clap_derive v4.4.7
[INFO] [stderr]     Checking clap v4.4.12
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking rust_gp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/population.rs:149:13
[INFO] [stdout]     |
[INFO] [stdout] 149 |         for mut c in &mut self.population {
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/population.rs:195:50
[INFO] [stdout]     |
[INFO] [stdout] 195 |         self.population.par_iter_mut().for_each(|mut i| { let _ = i.evaluate_fitness_mse(dataset); });
[INFO] [stdout]     |                                                  ----^
[INFO] [stdout]     |                                                  |
[INFO] [stdout]     |                                                  help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DebugGene` is never constructed
[INFO] [stdout]   --> src/chromosome.rs:71:16
[INFO] [stdout]    |
[INFO] [stdout] 71 |         struct DebugGene {}
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `iter` and `shuffle` are never used
[INFO] [stdout]    --> src/chromosome.rs:405:8
[INFO] [stdout]     |
[INFO] [stdout] 281 | impl Chromosome {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 405 |     fn iter(&self) -> impl Iterator<Item=&Gene> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 470 |     pub fn shuffle(&mut self) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `DatasetTraits` is never used
[INFO] [stdout]   --> src/io.rs:43:11
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub trait DatasetTraits {
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PopulationParameters` is never constructed
[INFO] [stdout]  --> src/population.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct PopulationParameters {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `all_accessed` is never used
[INFO] [stdout]   --> src/population.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub trait PopulationTraits {
[INFO] [stdout]    |           ---------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn all_accessed(&mut self);
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/gp.rs:21:63
[INFO] [stdout]    |
[INFO] [stdout] 21 |     println!("{}", population.best.make_function_string(None, "".parse().unwrap()));
[INFO] [stdout]    |                                                               ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/population.rs:149:13
[INFO] [stdout]     |
[INFO] [stdout] 149 |         for mut c in &mut self.population {
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/population.rs:195:50
[INFO] [stdout]     |
[INFO] [stdout] 195 |         self.population.par_iter_mut().for_each(|mut i| { let _ = i.evaluate_fitness_mse(dataset); });
[INFO] [stdout]     |                                                  ----^
[INFO] [stdout]     |                                                  |
[INFO] [stdout]     |                                                  help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_gp` (bin "rust_gp" test) due to 1 previous error; 7 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: struct `DebugGene` is never constructed
[INFO] [stdout]   --> src/chromosome.rs:71:16
[INFO] [stdout]    |
[INFO] [stdout] 71 |         struct DebugGene {}
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new_variable`, `new_unary2`, and `new_binary2` are never used
[INFO] [stdout]    --> src/chromosome.rs:152:12
[INFO] [stdout]     |
[INFO] [stdout]  92 | impl Gene {
[INFO] [stdout]     | --------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 152 |     pub fn new_variable(variable_number: usize) -> Gene {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 179 |     pub fn new_unary2(left: usize, func: fn(f64, f64) -> (f64, String)) -> Gene {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 219 |     pub fn new_binary2(curr_loc: usize, curr_loc2: usize, func: fn(f64, f64) -> (f64, String)) -> Gene {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_from_genes_array`, `iter`, `function_string`, and `shuffle` are never used
[INFO] [stdout]    --> src/chromosome.rs:310:12
[INFO] [stdout]     |
[INFO] [stdout] 281 | impl Chromosome {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 310 |     pub fn new_from_genes_array(genes_array: Vec<Gene>) -> Chromosome {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 405 |     fn iter(&self) -> impl Iterator<Item=&Gene> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 447 |     pub fn function_string(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 470 |     pub fn shuffle(&mut self) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `DatasetTraits` is never used
[INFO] [stdout]   --> src/io.rs:43:11
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub trait DatasetTraits {
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PopulationParameters` is never constructed
[INFO] [stdout]  --> src/population.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct PopulationParameters {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `all_accessed` is never used
[INFO] [stdout]   --> src/population.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub trait PopulationTraits {
[INFO] [stdout]    |           ---------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn all_accessed(&mut self);
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/gp.rs:21:63
[INFO] [stdout]    |
[INFO] [stdout] 21 |     println!("{}", population.best.make_function_string(None, "".parse().unwrap()));
[INFO] [stdout]    |                                                               ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_gp` (bin "rust_gp") due to 1 previous error; 8 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "909b6a4da3c9449bcb90aab8c8eaf07c1e2640d44c0e2d0a7a72e720c8ec84a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "909b6a4da3c9449bcb90aab8c8eaf07c1e2640d44c0e2d0a7a72e720c8ec84a7", kill_on_drop: false }`
[INFO] [stdout] 909b6a4da3c9449bcb90aab8c8eaf07c1e2640d44c0e2d0a7a72e720c8ec84a7
