[INFO] cloning repository https://github.com/sasakissa/rustuna
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sasakissa/rustuna" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsasakissa%2Frustuna", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsasakissa%2Frustuna'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 79ce04937d56d3f1a4e0e554514b05a9b1176c8d
[INFO] checking sasakissa/rustuna against master#c3def263a44e07e09ae6d57abfc8650227fb4972 for pr-118916
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsasakissa%2Frustuna" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sasakissa/rustuna on toolchain c3def263a44e07e09ae6d57abfc8650227fb4972
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c3def263a44e07e09ae6d57abfc8650227fb4972" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sasakissa/rustuna
[INFO] finished tweaking git repo https://github.com/sasakissa/rustuna
[INFO] tweaked toml for git repo https://github.com/sasakissa/rustuna written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sasakissa/rustuna 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" "+c3def263a44e07e09ae6d57abfc8650227fb4972" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking sasakissa/rustuna against try#3d5258f568a4b4970d455e4e29f39fd691b5a41a for pr-118916
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsasakissa%2Frustuna" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sasakissa/rustuna on toolchain 3d5258f568a4b4970d455e4e29f39fd691b5a41a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3d5258f568a4b4970d455e4e29f39fd691b5a41a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sasakissa/rustuna
[INFO] finished tweaking git repo https://github.com/sasakissa/rustuna
[INFO] tweaked toml for git repo https://github.com/sasakissa/rustuna written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/sasakissa/rustuna 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" "+3d5258f568a4b4970d455e4e29f39fd691b5a41a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand v0.8.1
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3d5258f568a4b4970d455e4e29f39fd691b5a41a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac48964765c3c3c42ce6d2e2dc0877dfd4f5ebc220bc7ba031f26f66d3f9325b
[INFO] running `Command { std: "docker" "start" "-a" "ac48964765c3c3c42ce6d2e2dc0877dfd4f5ebc220bc7ba031f26f66d3f9325b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac48964765c3c3c42ce6d2e2dc0877dfd4f5ebc220bc7ba031f26f66d3f9325b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac48964765c3c3c42ce6d2e2dc0877dfd4f5ebc220bc7ba031f26f66d3f9325b", kill_on_drop: false }`
[INFO] [stdout] ac48964765c3c3c42ce6d2e2dc0877dfd4f5ebc220bc7ba031f26f66d3f9325b
[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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3d5258f568a4b4970d455e4e29f39fd691b5a41a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3806ede593f0a53d81ff6ee00045734d07d547a2db2783db83643dcd9aac6da
[INFO] running `Command { std: "docker" "start" "-a" "d3806ede593f0a53d81ff6ee00045734d07d547a2db2783db83643dcd9aac6da", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling getrandom v0.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.1
[INFO] [stderr]     Checking rustuna v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `params`
[INFO] [stdout]    --> src/main.rs:195:13
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let params: HashMap<String, f64> = HashMap::new();
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_params`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `params`
[INFO] [stdout]    --> src/main.rs:195:13
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let params: HashMap<String, f64> = HashMap::new();
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_params`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `trial`
[INFO] [stdout]    --> src/main.rs:313:13
[INFO] [stdout]     |
[INFO] [stdout] 313 |         let trial = self.study.storage.get_trial(self.trial_id);
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_trial`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `trial`
[INFO] [stdout]    --> src/main.rs:313:13
[INFO] [stdout]     |
[INFO] [stdout] 313 |         let trial = self.study.storage.get_trial(self.trial_id);
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_trial`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `trial`
[INFO] [stdout]    --> src/main.rs:331:13
[INFO] [stdout]     |
[INFO] [stdout] 331 |         let trial = self.study.storage.get_trial(self.trial_id);
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_trial`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `trial`
[INFO] [stdout]    --> src/main.rs:331:13
[INFO] [stdout]     |
[INFO] [stdout] 331 |         let trial = self.study.storage.get_trial(self.trial_id);
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_trial`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `trial`
[INFO] [stdout]    --> src/main.rs:349:13
[INFO] [stdout]     |
[INFO] [stdout] 349 |         let trial = self.study.storage.get_trial(self.trial_id);
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_trial`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `trial`
[INFO] [stdout]    --> src/main.rs:349:13
[INFO] [stdout]     |
[INFO] [stdout] 349 |         let trial = self.study.storage.get_trial(self.trial_id);
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_trial`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `trial`
[INFO] [stdout]    --> src/main.rs:367:13
[INFO] [stdout]     |
[INFO] [stdout] 367 |         let trial = self.study.storage.get_trial(self.trial_id);
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_trial`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `trial`
[INFO] [stdout]    --> src/main.rs:367:13
[INFO] [stdout]     |
[INFO] [stdout] 367 |         let trial = self.study.storage.get_trial(self.trial_id);
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_trial`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/main.rs:397:38
[INFO] [stdout]     |
[INFO] [stdout] 397 |     fn sample_independent(&mut self, name: &str, distribution: Distributions) -> f64 {
[INFO] [stdout]     |                                      ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/main.rs:397:38
[INFO] [stdout]     |
[INFO] [stdout] 397 |     fn sample_independent(&mut self, name: &str, distribution: Distributions) -> f64 {
[INFO] [stdout]     |                                      ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/main.rs:417:42
[INFO] [stdout]     |
[INFO] [stdout] 417 |     fn sample_independent_int(&mut self, name: &str, distribution: Distributions) -> i64 {
[INFO] [stdout]     |                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/main.rs:417:42
[INFO] [stdout]     |
[INFO] [stdout] 417 |     fn sample_independent_int(&mut self, name: &str, distribution: Distributions) -> i64 {
[INFO] [stdout]     |                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/main.rs:430:47
[INFO] [stdout]     |
[INFO] [stdout] 430 |     fn sample_independent_category(&mut self, name: &str, distribution: Distributions) -> String {
[INFO] [stdout]     |                                               ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/main.rs:430:47
[INFO] [stdout]     |
[INFO] [stdout] 430 |     fn sample_independent_category(&mut self, name: &str, distribution: Distributions) -> String {
[INFO] [stdout]     |                                               ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `low` and `high` are never read
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct UniformDistribution {
[INFO] [stdout]    |        ------------------- fields in this struct
[INFO] [stdout] 39 |     low: f64,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 40 |     high: f64,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UniformDistribution` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | impl UniformDistribution {
[INFO] [stdout]    | ------------------------ associated function in this implementation
[INFO] [stdout] 43 |     fn new(low: f64, high: f64) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `low` and `high` are never read
[INFO] [stdout]   --> src/main.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct LogUniformDistribution {
[INFO] [stdout]    |        ---------------------- fields in this struct
[INFO] [stdout] 58 |     low: f64,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 59 |     high: f64,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `LogUniformDistribution` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | impl LogUniformDistribution {
[INFO] [stdout]    | --------------------------- associated function in this implementation
[INFO] [stdout] 62 |     fn new(low: f64, high: f64) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | impl CategoricalDistribution {
[INFO] [stdout]    | ---------------------------- associated function in this implementation
[INFO] [stdout] 81 |     fn new(choices: Vec<String>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Uni`, `Categorical`, and `LogUni` are never constructed
[INFO] [stdout]    --> src/main.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 102 | enum Distributions {
[INFO] [stdout]     |      ------------- variants in this enum
[INFO] [stdout] 103 |     Uni(UniformDistribution),
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 104 |     IntUni(IntUniformDistribution),
[INFO] [stdout] 105 |     Categorical(CategoricalDistribution),
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 106 |     LogUni(LogUniformDistribution),
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Distributions` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ExternalRepr` is never used
[INFO] [stdout]    --> src/main.rs:109:6
[INFO] [stdout]     |
[INFO] [stdout] 109 | enum ExternalRepr {
[INFO] [stdout]     |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `low` and `high` are never read
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct UniformDistribution {
[INFO] [stdout]    |        ------------------- fields in this struct
[INFO] [stdout] 39 |     low: f64,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 40 |     high: f64,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UniformDistribution` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Failed` is never constructed
[INFO] [stdout]    --> src/main.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | enum FrozenTrialState {
[INFO] [stdout]     |      ---------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 118 |     Failed,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FrozenTrialState` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | impl UniformDistribution {
[INFO] [stdout]    | ------------------------ associated function in this implementation
[INFO] [stdout] 43 |     fn new(low: f64, high: f64) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `params` is never used
[INFO] [stdout]    --> src/main.rs:148:8
[INFO] [stdout]     |
[INFO] [stdout] 130 | impl FrozenTrial {
[INFO] [stdout]     | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 148 |     fn params(&mut self) -> HashMap<String, ExternalRepr> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_best_trial` is never used
[INFO] [stdout]    --> src/main.rs:215:8
[INFO] [stdout]     |
[INFO] [stdout] 188 | impl Storage {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 215 |     fn get_best_trial(&self) -> Option<FrozenTrial> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `low` and `high` are never read
[INFO] [stdout]   --> src/main.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct LogUniformDistribution {
[INFO] [stdout]    |        ---------------------- fields in this struct
[INFO] [stdout] 58 |     low: f64,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 59 |     high: f64,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `LogUniformDistribution` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | impl LogUniformDistribution {
[INFO] [stdout]    | --------------------------- associated function in this implementation
[INFO] [stdout] 62 |     fn new(low: f64, high: f64) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `suggest_uniform`, `suggest_log`, and `suggest_categorical` are never used
[INFO] [stdout]    --> src/main.rs:312:8
[INFO] [stdout]     |
[INFO] [stdout] 304 | impl Trial {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 312 |     fn suggest_uniform(&mut self, name: &str, low: f64, high: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 330 |     fn suggest_log(&mut self, name: &str, low: f64, high: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 348 |     fn suggest_categorical(&mut self, name: &str, choices: Vec<String>) -> Result<String> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | impl CategoricalDistribution {
[INFO] [stdout]    | ---------------------------- associated function in this implementation
[INFO] [stdout] 81 |     fn new(choices: Vec<String>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `sample_independent` and `sample_independent_category` are never used
[INFO] [stdout]    --> src/main.rs:397:8
[INFO] [stdout]     |
[INFO] [stdout] 390 | impl Sampler {
[INFO] [stdout]     | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 397 |     fn sample_independent(&mut self, name: &str, distribution: Distributions) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 430 |     fn sample_independent_category(&mut self, name: &str, distribution: Distributions) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `best_trial` are never used
[INFO] [stdout]    --> src/main.rs:448:8
[INFO] [stdout]     |
[INFO] [stdout] 447 | impl Study {
[INFO] [stdout]     | ---------- associated items in this implementation
[INFO] [stdout] 448 |     fn new(storage: Storage, sampler: Sampler) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 467 |     fn best_trial(&self) -> Option<FrozenTrial> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Uni`, `Categorical`, and `LogUni` are never constructed
[INFO] [stdout]    --> src/main.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 102 | enum Distributions {
[INFO] [stdout]     |      ------------- variants in this enum
[INFO] [stdout] 103 |     Uni(UniformDistribution),
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 104 |     IntUni(IntUniformDistribution),
[INFO] [stdout] 105 |     Categorical(CategoricalDistribution),
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 106 |     LogUni(LogUniformDistribution),
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Distributions` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ExternalRepr` is never used
[INFO] [stdout]    --> src/main.rs:109:6
[INFO] [stdout]     |
[INFO] [stdout] 109 | enum ExternalRepr {
[INFO] [stdout]     |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `distributionEnum` should have a snake case name
[INFO] [stdout]    --> src/main.rs:315:13
[INFO] [stdout]     |
[INFO] [stdout] 315 |         let distributionEnum = Distributions::Uni(UniformDistribution::new(low, high));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `distribution_enum`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Failed` is never constructed
[INFO] [stdout]    --> src/main.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | enum FrozenTrialState {
[INFO] [stdout]     |      ---------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 118 |     Failed,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FrozenTrialState` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `params` is never used
[INFO] [stdout]    --> src/main.rs:148:8
[INFO] [stdout]     |
[INFO] [stdout] 130 | impl FrozenTrial {
[INFO] [stdout]     | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 148 |     fn params(&mut self) -> HashMap<String, ExternalRepr> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_best_trial` is never used
[INFO] [stdout]    --> src/main.rs:215:8
[INFO] [stdout]     |
[INFO] [stdout] 188 | impl Storage {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 215 |     fn get_best_trial(&self) -> Option<FrozenTrial> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `suggest_uniform`, `suggest_log`, and `suggest_categorical` are never used
[INFO] [stdout]    --> src/main.rs:312:8
[INFO] [stdout]     |
[INFO] [stdout] 304 | impl Trial {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 312 |     fn suggest_uniform(&mut self, name: &str, low: f64, high: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 330 |     fn suggest_log(&mut self, name: &str, low: f64, high: f64) -> Result<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 348 |     fn suggest_categorical(&mut self, name: &str, choices: Vec<String>) -> Result<String> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `sample_independent` and `sample_independent_category` are never used
[INFO] [stdout]    --> src/main.rs:397:8
[INFO] [stdout]     |
[INFO] [stdout] 390 | impl Sampler {
[INFO] [stdout]     | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 397 |     fn sample_independent(&mut self, name: &str, distribution: Distributions) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 430 |     fn sample_independent_category(&mut self, name: &str, distribution: Distributions) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `best_trial` are never used
[INFO] [stdout]    --> src/main.rs:448:8
[INFO] [stdout]     |
[INFO] [stdout] 447 | impl Study {
[INFO] [stdout]     | ---------- associated items in this implementation
[INFO] [stdout] 448 |     fn new(storage: Storage, sampler: Sampler) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 467 |     fn best_trial(&self) -> Option<FrozenTrial> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `distributionEnum` should have a snake case name
[INFO] [stdout]    --> src/main.rs:315:13
[INFO] [stdout]     |
[INFO] [stdout] 315 |         let distributionEnum = Distributions::Uni(UniformDistribution::new(low, high));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `distribution_enum`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:321:9
[INFO] [stdout]     |
[INFO] [stdout] 321 | /         self.study.storage.set_trial_param(
[INFO] [stdout] 322 | |             self.trial_id,
[INFO] [stdout] 323 | |             name,
[INFO] [stdout] 324 | |             Distributions::Uni(distribution),
[INFO] [stdout] 325 | |             param_value_in_internal_repr,
[INFO] [stdout] 326 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 321 |         let _ = self.study.storage.set_trial_param(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `distributionEnum` should have a snake case name
[INFO] [stdout]    --> src/main.rs:333:13
[INFO] [stdout]     |
[INFO] [stdout] 333 |         let distributionEnum = Distributions::LogUni(LogUniformDistribution::new(low, high));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `distribution_enum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:339:9
[INFO] [stdout]     |
[INFO] [stdout] 339 | /         self.study.storage.set_trial_param(
[INFO] [stdout] 340 | |             self.trial_id,
[INFO] [stdout] 341 | |             name,
[INFO] [stdout] 342 | |             Distributions::LogUni(distribution),
[INFO] [stdout] 343 | |             param_value_in_internal_repr,
[INFO] [stdout] 344 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 339 |         let _ = self.study.storage.set_trial_param(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `distributionEnum` should have a snake case name
[INFO] [stdout]    --> src/main.rs:351:13
[INFO] [stdout]     |
[INFO] [stdout] 351 |         let distributionEnum = Distributions::Categorical(CategoricalDistribution::new(choices));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `distribution_enum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:321:9
[INFO] [stdout]     |
[INFO] [stdout] 321 | /         self.study.storage.set_trial_param(
[INFO] [stdout] 322 | |             self.trial_id,
[INFO] [stdout] 323 | |             name,
[INFO] [stdout] 324 | |             Distributions::Uni(distribution),
[INFO] [stdout] 325 | |             param_value_in_internal_repr,
[INFO] [stdout] 326 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 321 |         let _ = self.study.storage.set_trial_param(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `distributionEnum` should have a snake case name
[INFO] [stdout]    --> src/main.rs:333:13
[INFO] [stdout]     |
[INFO] [stdout] 333 |         let distributionEnum = Distributions::LogUni(LogUniformDistribution::new(low, high));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `distribution_enum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:357:9
[INFO] [stdout]     |
[INFO] [stdout] 357 | /         self.study.storage.set_trial_param(
[INFO] [stdout] 358 | |             self.trial_id,
[INFO] [stdout] 359 | |             name,
[INFO] [stdout] 360 | |             Distributions::Categorical(distribution),
[INFO] [stdout] 361 | |             param_value_in_internal_repr,
[INFO] [stdout] 362 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 357 |         let _ = self.study.storage.set_trial_param(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `distributionEnum` should have a snake case name
[INFO] [stdout]    --> src/main.rs:369:13
[INFO] [stdout]     |
[INFO] [stdout] 369 |         let distributionEnum = Distributions::IntUni(IntUniformDistribution::new(low, high));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `distribution_enum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:339:9
[INFO] [stdout]     |
[INFO] [stdout] 339 | /         self.study.storage.set_trial_param(
[INFO] [stdout] 340 | |             self.trial_id,
[INFO] [stdout] 341 | |             name,
[INFO] [stdout] 342 | |             Distributions::LogUni(distribution),
[INFO] [stdout] 343 | |             param_value_in_internal_repr,
[INFO] [stdout] 344 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 339 |         let _ = self.study.storage.set_trial_param(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `distributionEnum` should have a snake case name
[INFO] [stdout]    --> src/main.rs:351:13
[INFO] [stdout]     |
[INFO] [stdout] 351 |         let distributionEnum = Distributions::Categorical(CategoricalDistribution::new(choices));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `distribution_enum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:375:9
[INFO] [stdout]     |
[INFO] [stdout] 375 | /         self.study.storage.set_trial_param(
[INFO] [stdout] 376 | |             self.trial_id,
[INFO] [stdout] 377 | |             name,
[INFO] [stdout] 378 | |             Distributions::IntUni(distribution),
[INFO] [stdout] 379 | |             param_value_in_internal_repr,
[INFO] [stdout] 380 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 375 |         let _ = self.study.storage.set_trial_param(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:357:9
[INFO] [stdout]     |
[INFO] [stdout] 357 | /         self.study.storage.set_trial_param(
[INFO] [stdout] 358 | |             self.trial_id,
[INFO] [stdout] 359 | |             name,
[INFO] [stdout] 360 | |             Distributions::Categorical(distribution),
[INFO] [stdout] 361 | |             param_value_in_internal_repr,
[INFO] [stdout] 362 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 357 |         let _ = self.study.storage.set_trial_param(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:461:13
[INFO] [stdout]     |
[INFO] [stdout] 461 |             self.storage.set_trial_value(trial_id, value);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 461 |             let _ = self.storage.set_trial_value(trial_id, value);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `distributionEnum` should have a snake case name
[INFO] [stdout]    --> src/main.rs:369:13
[INFO] [stdout]     |
[INFO] [stdout] 369 |         let distributionEnum = Distributions::IntUni(IntUniformDistribution::new(low, high));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `distribution_enum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:462:13
[INFO] [stdout]     |
[INFO] [stdout] 462 | /             self.storage
[INFO] [stdout] 463 | |                 .set_trial_state(trial_id, FrozenTrialState::Completed);
[INFO] [stdout]     | |_______________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 462 |             let _ = self.storage
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:375:9
[INFO] [stdout]     |
[INFO] [stdout] 375 | /         self.study.storage.set_trial_param(
[INFO] [stdout] 376 | |             self.trial_id,
[INFO] [stdout] 377 | |             name,
[INFO] [stdout] 378 | |             Distributions::IntUni(distribution),
[INFO] [stdout] 379 | |             param_value_in_internal_repr,
[INFO] [stdout] 380 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 375 |         let _ = self.study.storage.set_trial_param(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:461:13
[INFO] [stdout]     |
[INFO] [stdout] 461 |             self.storage.set_trial_value(trial_id, value);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 461 |             let _ = self.storage.set_trial_value(trial_id, value);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:462:13
[INFO] [stdout]     |
[INFO] [stdout] 462 | /             self.storage
[INFO] [stdout] 463 | |                 .set_trial_state(trial_id, FrozenTrialState::Completed);
[INFO] [stdout]     | |_______________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 462 |             let _ = self.storage
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 31 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 31 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `Command { std: "docker" "inspect" "d3806ede593f0a53d81ff6ee00045734d07d547a2db2783db83643dcd9aac6da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3806ede593f0a53d81ff6ee00045734d07d547a2db2783db83643dcd9aac6da", kill_on_drop: false }`
[INFO] [stdout] d3806ede593f0a53d81ff6ee00045734d07d547a2db2783db83643dcd9aac6da