[INFO] cloning repository https://github.com/VielenDanke/rust_learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VielenDanke/rust_learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVielenDanke%2Frust_learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVielenDanke%2Frust_learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a286695f871eb9ff055d614fad042337cf5b7a89
[INFO] checking VielenDanke/rust_learning 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%2FVielenDanke%2Frust_learning" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/VielenDanke/rust_learning
[INFO] finished tweaking git repo https://github.com/VielenDanke/rust_learning
[INFO] tweaked toml for git repo https://github.com/VielenDanke/rust_learning written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/VielenDanke/rust_learning 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/VielenDanke/rust_learning 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] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e1d613182919988d697000b4a69173ea7860762fa4bb9b4c2e5d95f3bf96f723
[INFO] running `Command { std: "docker" "start" "-a" "e1d613182919988d697000b4a69173ea7860762fa4bb9b4c2e5d95f3bf96f723", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1d613182919988d697000b4a69173ea7860762fa4bb9b4c2e5d95f3bf96f723", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1d613182919988d697000b4a69173ea7860762fa4bb9b4c2e5d95f3bf96f723", kill_on_drop: false }`
[INFO] [stdout] e1d613182919988d697000b4a69173ea7860762fa4bb9b4c2e5d95f3bf96f723
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 23e0513704d564b940eac7fd98448a6909a14d26130a33954f5a5399bfc36143
[INFO] running `Command { std: "docker" "start" "-a" "23e0513704d564b940eac7fd98448a6909a14d26130a33954f5a5399bfc36143", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.154
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[INFO] [stderr]    Compiling futures-task v0.3.30
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[INFO] [stderr]     Checking rand v0.7.3
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[INFO] [stderr]     Checking alloc-no-stdlib v2.0.4
[INFO] [stderr]     Checking managing_projects v0.1.0 (/opt/rustwide/workdir/managing_projects)
[INFO] [stderr]     Checking alloc-stdlib v0.2.2
[INFO] [stdout] warning: function `calculate_product_cost` is never used
[INFO] [stdout]  --> managing_projects/src/service/product_service.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn calculate_product_cost(first_product: u32, second_product: u32) -> u32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fetch_products` is never used
[INFO] [stdout]  --> managing_projects/src/repository/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn fetch_products() -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
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[INFO] [stderr]    Compiling devise v0.4.1
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[INFO] [stderr]    Compiling async-stream-impl v0.3.5
[INFO] [stderr]     Checking serde v1.0.203
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[INFO] [stderr]     Checking local-channel v0.1.5
[INFO] [stderr]     Checking async-dup v1.2.4
[INFO] [stderr]     Checking blake2 v0.10.6
[INFO] [stderr]    Compiling futures v0.3.30
[INFO] [stderr]     Checking base64 v0.12.3
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[INFO] [stderr]     Checking route-recognizer v0.2.0
[INFO] [stderr]     Checking basic_blockchain_example v0.1.0 (/opt/rustwide/workdir/basic_blockchain_example)
[INFO] [stderr]     Checking server_with_standard_library v0.1.0 (/opt/rustwide/workdir/server_with_standard_library)
[INFO] [stdout] warning: field `pending_transactions` is never read
[INFO] [stdout]   --> basic_blockchain_example/src/structures/blockchain.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Blockchain {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 21 |     pending_transactions: Vec<Transaction>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Blockchain` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `store` and `acc_type` are never read
[INFO] [stdout]   --> basic_blockchain_example/src/structures/account.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct Account {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout]  8 |     /// We want the account to be able to store any information we want (Dictionary)
[INFO] [stdout]  9 |     store: HashMap<String, String>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     acc_type: AccountType,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Account` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking learning v0.1.0 (/opt/rustwide/workdir/learning)
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> learning/src/oop/pattern_state_example.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> learning/src/oop/pattern_state_example.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> learning/src/collections/string.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut s = String::new();
[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: unused variable: `s`
[INFO] [stdout]  --> learning/src/collections/string.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut s = String::new();
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> learning/src/collections/string.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let s = data.to_string();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> learning/src/collections/string.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let s = "initial content".to_string();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> learning/src/collections/string.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let s = String::from("initial content");
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> learning/src/collections/string.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let s = &hello[0..4];
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> learning/src/collections/vector.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let v: Vec<i32> = Vec::new();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `macro_v`
[INFO] [stdout]  --> learning/src/collections/vector.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let macro_v = vec![1, 2, 3];
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_macro_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point_integer`
[INFO] [stdout]   --> learning/src/generics/generic_structures.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let point_integer = Point {x: 5, y: 10};
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_point_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point_float`
[INFO] [stdout]   --> learning/src/generics/generic_structures.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let point_float = Point {x: 5.0, y: 10.0};
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_point_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point_combined`
[INFO] [stdout]   --> learning/src/generics/generic_structures.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let point_combined = PointCombined{x: 5, y: 10.0};
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_point_combined`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]  --> learning/src/traits/traits_with_generics.rs:9:33
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn notify_with_restrictions(item: &(impl Summary + Display)) {}
[INFO] [stdout]   |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> learning/src/traits/traits_with_generics.rs:11:64
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn notify_with_restrictions_generics<T: Summary + Display>(item: &T) {}
[INFO] [stdout]    |                                                                ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> learning/src/traits/traits_with_generics.rs:13:78
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn functions_with_complex_generics<T: Display + Clone, U: Clone + Debug>(t: &T, u: &U) -> i32 {
[INFO] [stdout]    |                                                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> learning/src/traits/traits_with_generics.rs:13:85
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn functions_with_complex_generics<T: Display + Clone, U: Clone + Debug>(t: &T, u: &U) -> i32 {
[INFO] [stdout]    |                                                                                     ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> learning/src/traits/traits_with_generics.rs:17:35
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn functions_with_where<T, U>(t: &T, u: &U) -> i32
[INFO] [stdout]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> learning/src/traits/traits_with_generics.rs:17:42
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn functions_with_where<T, U>(t: &T, u: &U) -> i32
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `r` is assigned to, but never used
[INFO] [stdout]   --> learning/src/lifetimes/lifetime_in_functions.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let r;
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_r` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `r` is never read
[INFO] [stdout]   --> learning/src/lifetimes/lifetime_in_functions.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         r = &x;
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> learning/src/lifetimes/lifetime_in_struct.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let i = ImportantExcerpt { part: first_sentence };
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> learning/src/lifetimes/static_lifetime.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let s: &'static str = "I have a static lifetime";
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expensive_closure`
[INFO] [stdout]  --> learning/src/closures/closures_as_variables.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let expensive_closure = |num: u32| -> u32 {
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expensive_closure`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `add_one_v2`
[INFO] [stdout]   --> learning/src/closures/closures_as_variables.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let add_one_v2 = |x: u32| -> u32 { x + 1 };
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_add_one_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]  --> learning/src/smart_pointers/rc_pointers.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let b = Cons(3, Box::new(a));
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> learning/src/smart_pointers/rc_pointers.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let b = ListRc::Cons(3, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> learning/src/smart_pointers/rc_pointers.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let c = ListRc::Cons(4, Rc::clone(&a));
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `post`
[INFO] [stdout]   --> learning/src/oop/pattern_state_example.rs:41:27
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `feet`
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:73:11
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 });
[INFO] [stdout]    |           ^^^^ help: if this is intentional, prefix it with an underscore: `_feet`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `inches`
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 });
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_inches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:73:34
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 });
[INFO] [stdout]    |                                  ^ help: try ignoring the field: `x: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:73:37
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 });
[INFO] [stdout]    |                                     ^ help: try ignoring the field: `y: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> learning/src/patterns_mappings/wildcards.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let y = 10;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> learning/src/patterns_mappings/extra_conditions.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 |         Some(x) => {}
[INFO] [stdout]   |              ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> learning/src/unsafe_rust/dereference_raw_pointers.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let r = address as *const i32;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let f: Box<dyn Fn() + Send + 'static> = Box::new(|| println!("hi"));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:16:24
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn takes_long_type(f: Box<dyn Fn() + Send + 'static>) {
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let f: Thunk = Box::new(|| println!("hi"));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:31:24
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn takes_long_type(f: Thunk) {
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dynamic_s1`
[INFO] [stdout]  --> learning/src/advanced_types/sized_types.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let dynamic_s1: &str = "str_1";
[INFO] [stdout]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dynamic_s1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dynamic_s2`
[INFO] [stdout]  --> learning/src/advanced_types/sized_types.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let dynamic_s2 = Rc::<str>::from("foo");
[INFO] [stdout]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dynamic_s2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> learning/src/advanced_types/sized_types.rs:12:27
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn generic<T: ?Sized>(t: &T) {
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> learning/src/macros/macros_rules.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let v: Vec<u32> = vec![1, 2, 3];
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> learning/src/structures.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Guess {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 22 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `update_rewrite_old_values` is never used
[INFO] [stdout]   --> learning/src/collections/hashmap.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn update_rewrite_old_values() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `insert_if_no_key_in_map` is never used
[INFO] [stdout]   --> learning/src/collections/hashmap.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn insert_if_no_key_in_map() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_value_based_on_old` is never used
[INFO] [stdout]   --> learning/src/collections/hashmap.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn new_value_based_on_old() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_string` is never used
[INFO] [stdout]  --> learning/src/collections/string.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn create_string() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `push_to_string` is never used
[INFO] [stdout]   --> learning/src/collections/string.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn push_to_string() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_vector` is never used
[INFO] [stdout]  --> learning/src/collections/vector.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn create_vector() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change_vector` is never used
[INFO] [stdout]   --> learning/src/collections/vector.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn change_vector() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_values_from_vector` is never used
[INFO] [stdout]   --> learning/src/collections/vector.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn get_values_from_vector() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iterate_over_vector` is never used
[INFO] [stdout]   --> learning/src/collections/vector.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn iterate_over_vector() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enums_to_store_different_types` is never used
[INFO] [stdout]   --> learning/src/collections/vector.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn enums_to_store_different_types() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `crash_and_burn` is never used
[INFO] [stdout]   --> learning/src/exceptions/non_recoverable_panic.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn crash_and_burn() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_trace_panic` is never used
[INFO] [stdout]   --> learning/src/exceptions/non_recoverable_panic.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn reverse_trace_panic() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> learning/src/generics/generic_structures.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Point<T> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PointCombined` is never constructed
[INFO] [stdout]   --> learning/src/generics/generic_structures.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct PointCombined<T, U> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `declare_structure` is never used
[INFO] [stdout]   --> learning/src/generics/generic_structures.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn declare_structure() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> learning/src/generics/generic_methods.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point<T> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x` is never used
[INFO] [stdout]  --> learning/src/generics/generic_methods.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl<T> Point<T> {
[INFO] [stdout]   | ---------------- method in this implementation
[INFO] [stdout] 7 |     fn x(&self) -> &T {
[INFO] [stdout]   |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `distance_from_origin` is never used
[INFO] [stdout]   --> learning/src/generics/generic_methods.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Point<f32> {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 14 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `non_compiled_example` is never used
[INFO] [stdout]   --> learning/src/lifetimes/lifetime_in_functions.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn non_compiled_example() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `call` is never used
[INFO] [stdout]  --> learning/src/lifetimes/lifetime_in_struct.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn call() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_word` is never used
[INFO] [stdout]  --> learning/src/lifetimes/lifetime_elision.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn first_word<'a>(s: &'a str) -> &'a str {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `return_part` is never used
[INFO] [stdout]  --> learning/src/lifetimes/lifetime_in_methods.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]   | ----------------------------- method in this implementation
[INFO] [stdout] 6 |     fn return_part(&self, announcement: &str) -> &str {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example` is never used
[INFO] [stdout]  --> learning/src/lifetimes/static_lifetime.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn example() {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example_closure_with_variable` is never used
[INFO] [stdout]  --> learning/src/closures/closures_as_variables.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn example_closure_with_variable() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example_with_and_without_type_annotation` is never used
[INFO] [stdout]   --> learning/src/closures/closures_as_variables.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn example_with_and_without_type_annotation() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `height` is never read
[INFO] [stdout]   --> learning/src/closures/links_and_ownership.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct Rectangle {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 39 |     width: u32,
[INFO] [stdout] 40 |     height: u32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]   --> learning/src/smart_pointers/rc_pointers.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Cons(T, Rc<ListRc<T>>),
[INFO] [stdout]    |     ----    ^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 11 -     Cons(T, Rc<ListRc<T>>),
[INFO] [stdout] 11 +     Cons(T, ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]  --> learning/src/smart_pointers/rc_with_refcell.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Cons(Rc<RefCell<i32>>, Rc<List>),
[INFO] [stdout]   |     ---- ^^^^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 6 -     Cons(Rc<RefCell<i32>>, Rc<List>),
[INFO] [stdout] 6 +     Cons((), ()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reject` is never used
[INFO] [stdout]   --> learning/src/oop/pattern_state_example.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | trait State {
[INFO] [stdout]    |       ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn reject(self: Box<Self>) -> Box<dyn State>;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rejected` is never constructed
[INFO] [stdout]    --> learning/src/oop/pattern_state_example.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 106 | struct Rejected {}
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> learning/src/patterns_mappings/destructurization.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Color` is never used
[INFO] [stdout]  --> learning/src/patterns_mappings/destructurization.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum Color {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `desctructurization_struct` is never used
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn desctructurization_struct() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `desctructurization_struct_shorter` is never used
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn desctructurization_struct_shorter() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `desctructurization_struct_with_match` is never used
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn desctructurization_struct_with_match() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `desctructurization_enum` is never used
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn desctructurization_enum() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `desctructurization_tuples` is never used
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn desctructurization_tuples() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `y` and `z` are never read
[INFO] [stdout]  --> learning/src/patterns_mappings/wildcards.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point {
[INFO] [stdout]   |        ----- fields in this struct
[INFO] [stdout] 2 |     x: i32,
[INFO] [stdout] 3 |     y: i32,
[INFO] [stdout]   |     ^
[INFO] [stdout] 4 |     z: i32,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Millimeters` is never constructed
[INFO] [stdout]   --> learning/src/advanced_traits/default_common_types_and_operator_overload.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | struct Millimeters(u32);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Meters` is never constructed
[INFO] [stdout]   --> learning/src/advanced_traits/default_common_types_and_operator_overload.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct Meters(u32);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `baby_name` is never used
[INFO] [stdout]   --> learning/src/advanced_traits/call_methods_and_functions_with_the_same_name.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl Dog {
[INFO] [stdout]    | -------- associated function in this implementation
[INFO] [stdout] 49 |     fn baby_name() -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_long_type` is never used
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn takes_long_type(f: Box<dyn Fn() + Send + 'static>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_long_type` is never used
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn returns_long_type() -> Box<dyn Fn() + Send + 'static> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_long_type` is never used
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn takes_long_type(f: Thunk) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_long_type` is never used
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn returns_long_type() -> Thunk {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Result` is never used
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 |     type Result<T> = std::result::Result<T, std::io::Error>;
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Write` is never used
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:44:15
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub trait Write {
[INFO] [stdout]    |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> learning/src/advanced_functions_and_closures/function_pointer.rs:23:15
[INFO] [stdout]    |
[INFO] [stdout] 23 |         Value(u32),
[INFO] [stdout]    |         ----- ^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 23 -         Value(u32),
[INFO] [stdout] 23 +         Value(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Stop` is never constructed
[INFO] [stdout]   --> learning/src/advanced_functions_and_closures/function_pointer.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     enum Status {
[INFO] [stdout]    |          ------ variant in this enum
[INFO] [stdout] 23 |         Value(u32),
[INFO] [stdout] 24 |         Stop,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_closure` is never used
[INFO] [stdout]  --> learning/src/advanced_functions_and_closures/return_closures.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn returns_closure() -> Box<dyn Fn(i32) -> i32> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> learning/src/unsafe_rust/call_unsafe_functions_or_methods.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         drop(*ptr);
[INFO] [stdout]    |         ^^^^^----^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              argument has type `i32`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 10 -         drop(*ptr);
[INFO] [stdout] 10 +         let _ = *ptr;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]   --> learning/src/unsafe_rust/access_change_static_variables.rs:13:29
[INFO] [stdout]    |
[INFO] [stdout] 13 |         println!("COUNTER: {COUNTER}");
[INFO] [stdout]    |                             ^^^^^^^ shared reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]    = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]    = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]   --> learning/src/advanced_functions_and_closures/function_pointer.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     vec_example.iter().map(|i| i.to_string()).collect::<String>();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let _ = vec_example.iter().map(|i| i.to_string()).collect::<String>();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]   --> learning/src/advanced_functions_and_closures/function_pointer.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     vec_example.iter().map(ToString::to_string).collect::<String>();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let _ = vec_example.iter().map(ToString::to_string).collect::<String>();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `another_module` is never used
[INFO] [stdout]  --> managing_projects/src/bin/third_bin/another_module.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn another_module() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `another_module` is never used
[INFO] [stdout]  --> managing_projects/src/bin/third_bin/another_module.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn another_module() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pending_transactions` is never read
[INFO] [stdout]   --> basic_blockchain_example/src/structures/blockchain.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Blockchain {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 21 |     pending_transactions: Vec<Transaction>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Blockchain` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `store` and `acc_type` are never read
[INFO] [stdout]   --> basic_blockchain_example/src/structures/account.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct Account {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout]  8 |     /// We want the account to be able to store any information we want (Dictionary)
[INFO] [stdout]  9 |     store: HashMap<String, String>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     acc_type: AccountType,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Account` 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: unused import: `managing_projects`
[INFO] [stdout]  --> managing_projects/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use managing_projects;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `managing_projects`
[INFO] [stdout]  --> managing_projects/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use managing_projects;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sender`
[INFO] [stdout]    --> server_with_standard_library/src/lib.rs:126:14
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let (sender, receiver) = mpsc::channel();
[INFO] [stdout]     |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sender`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> learning/src/oop/pattern_state_example.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> learning/src/oop/pattern_state_example.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> learning/src/collections/string.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut s = String::new();
[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: unused variable: `s`
[INFO] [stdout]  --> learning/src/collections/string.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut s = String::new();
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> learning/src/collections/string.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let s = data.to_string();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> learning/src/collections/string.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let s = "initial content".to_string();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> learning/src/collections/string.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let s = String::from("initial content");
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> learning/src/collections/string.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let s = &hello[0..4];
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> learning/src/collections/vector.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let v: Vec<i32> = Vec::new();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `macro_v`
[INFO] [stdout]  --> learning/src/collections/vector.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let macro_v = vec![1, 2, 3];
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_macro_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point_integer`
[INFO] [stdout]   --> learning/src/generics/generic_structures.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let point_integer = Point {x: 5, y: 10};
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_point_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point_float`
[INFO] [stdout]   --> learning/src/generics/generic_structures.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let point_float = Point {x: 5.0, y: 10.0};
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_point_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point_combined`
[INFO] [stdout]   --> learning/src/generics/generic_structures.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let point_combined = PointCombined{x: 5, y: 10.0};
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_point_combined`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]  --> learning/src/traits/traits_with_generics.rs:9:33
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn notify_with_restrictions(item: &(impl Summary + Display)) {}
[INFO] [stdout]   |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> learning/src/traits/traits_with_generics.rs:11:64
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn notify_with_restrictions_generics<T: Summary + Display>(item: &T) {}
[INFO] [stdout]    |                                                                ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> learning/src/traits/traits_with_generics.rs:13:78
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn functions_with_complex_generics<T: Display + Clone, U: Clone + Debug>(t: &T, u: &U) -> i32 {
[INFO] [stdout]    |                                                                              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> learning/src/traits/traits_with_generics.rs:13:85
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn functions_with_complex_generics<T: Display + Clone, U: Clone + Debug>(t: &T, u: &U) -> i32 {
[INFO] [stdout]    |                                                                                     ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> learning/src/traits/traits_with_generics.rs:17:35
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn functions_with_where<T, U>(t: &T, u: &U) -> i32
[INFO] [stdout]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> learning/src/traits/traits_with_generics.rs:17:42
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn functions_with_where<T, U>(t: &T, u: &U) -> i32
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `r` is assigned to, but never used
[INFO] [stdout]   --> learning/src/lifetimes/lifetime_in_functions.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let r;
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_r` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `r` is never read
[INFO] [stdout]   --> learning/src/lifetimes/lifetime_in_functions.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         r = &x;
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> learning/src/lifetimes/lifetime_in_struct.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let i = ImportantExcerpt { part: first_sentence };
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> learning/src/lifetimes/static_lifetime.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let s: &'static str = "I have a static lifetime";
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expensive_closure`
[INFO] [stdout]  --> learning/src/closures/closures_as_variables.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let expensive_closure = |num: u32| -> u32 {
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expensive_closure`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `add_one_v2`
[INFO] [stdout]   --> learning/src/closures/closures_as_variables.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let add_one_v2 = |x: u32| -> u32 { x + 1 };
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_add_one_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]  --> learning/src/smart_pointers/rc_pointers.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let b = Cons(3, Box::new(a));
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> learning/src/smart_pointers/rc_pointers.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let b = ListRc::Cons(3, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> learning/src/smart_pointers/rc_pointers.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let c = ListRc::Cons(4, Rc::clone(&a));
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `post`
[INFO] [stdout]   --> learning/src/oop/pattern_state_example.rs:41:27
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `feet`
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:73:11
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 });
[INFO] [stdout]    |           ^^^^ help: if this is intentional, prefix it with an underscore: `_feet`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `inches`
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 });
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_inches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:73:34
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 });
[INFO] [stdout]    |                                  ^ help: try ignoring the field: `x: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:73:37
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 });
[INFO] [stdout]    |                                     ^ help: try ignoring the field: `y: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> learning/src/patterns_mappings/wildcards.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let y = 10;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> learning/src/patterns_mappings/extra_conditions.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 |         Some(x) => {}
[INFO] [stdout]   |              ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> learning/src/unsafe_rust/dereference_raw_pointers.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let r = address as *const i32;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let f: Box<dyn Fn() + Send + 'static> = Box::new(|| println!("hi"));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:16:24
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn takes_long_type(f: Box<dyn Fn() + Send + 'static>) {
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let f: Thunk = Box::new(|| println!("hi"));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:31:24
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn takes_long_type(f: Thunk) {
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dynamic_s1`
[INFO] [stdout]  --> learning/src/advanced_types/sized_types.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let dynamic_s1: &str = "str_1";
[INFO] [stdout]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dynamic_s1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dynamic_s2`
[INFO] [stdout]  --> learning/src/advanced_types/sized_types.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let dynamic_s2 = Rc::<str>::from("foo");
[INFO] [stdout]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dynamic_s2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> learning/src/advanced_types/sized_types.rs:12:27
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn generic<T: ?Sized>(t: &T) {
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> learning/src/macros/macros_rules.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let v: Vec<u32> = vec![1, 2, 3];
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> learning/src/structures.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Guess {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 22 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `update_rewrite_old_values` is never used
[INFO] [stdout]   --> learning/src/collections/hashmap.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn update_rewrite_old_values() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `insert_if_no_key_in_map` is never used
[INFO] [stdout]   --> learning/src/collections/hashmap.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn insert_if_no_key_in_map() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_value_based_on_old` is never used
[INFO] [stdout]   --> learning/src/collections/hashmap.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn new_value_based_on_old() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_string` is never used
[INFO] [stdout]  --> learning/src/collections/string.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn create_string() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `push_to_string` is never used
[INFO] [stdout]   --> learning/src/collections/string.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn push_to_string() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_vector` is never used
[INFO] [stdout]  --> learning/src/collections/vector.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn create_vector() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change_vector` is never used
[INFO] [stdout]   --> learning/src/collections/vector.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn change_vector() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_values_from_vector` is never used
[INFO] [stdout]   --> learning/src/collections/vector.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn get_values_from_vector() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iterate_over_vector` is never used
[INFO] [stdout]   --> learning/src/collections/vector.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn iterate_over_vector() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enums_to_store_different_types` is never used
[INFO] [stdout]   --> learning/src/collections/vector.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn enums_to_store_different_types() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `crash_and_burn` is never used
[INFO] [stdout]   --> learning/src/exceptions/non_recoverable_panic.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn crash_and_burn() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_trace_panic` is never used
[INFO] [stdout]   --> learning/src/exceptions/non_recoverable_panic.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn reverse_trace_panic() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> learning/src/generics/generic_structures.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Point<T> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PointCombined` is never constructed
[INFO] [stdout]   --> learning/src/generics/generic_structures.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct PointCombined<T, U> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `declare_structure` is never used
[INFO] [stdout]   --> learning/src/generics/generic_structures.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn declare_structure() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> learning/src/generics/generic_methods.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point<T> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x` is never used
[INFO] [stdout]  --> learning/src/generics/generic_methods.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl<T> Point<T> {
[INFO] [stdout]   | ---------------- method in this implementation
[INFO] [stdout] 7 |     fn x(&self) -> &T {
[INFO] [stdout]   |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `distance_from_origin` is never used
[INFO] [stdout]   --> learning/src/generics/generic_methods.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Point<f32> {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 14 |     fn distance_from_origin(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `non_compiled_example` is never used
[INFO] [stdout]   --> learning/src/lifetimes/lifetime_in_functions.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn non_compiled_example() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `call` is never used
[INFO] [stdout]  --> learning/src/lifetimes/lifetime_in_struct.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn call() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_word` is never used
[INFO] [stdout]  --> learning/src/lifetimes/lifetime_elision.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn first_word<'a>(s: &'a str) -> &'a str {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `return_part` is never used
[INFO] [stdout]  --> learning/src/lifetimes/lifetime_in_methods.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]   | ----------------------------- method in this implementation
[INFO] [stdout] 6 |     fn return_part(&self, announcement: &str) -> &str {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example` is never used
[INFO] [stdout]  --> learning/src/lifetimes/static_lifetime.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn example() {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example_closure_with_variable` is never used
[INFO] [stdout]  --> learning/src/closures/closures_as_variables.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn example_closure_with_variable() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example_with_and_without_type_annotation` is never used
[INFO] [stdout]   --> learning/src/closures/closures_as_variables.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn example_with_and_without_type_annotation() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `height` is never read
[INFO] [stdout]   --> learning/src/closures/links_and_ownership.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct Rectangle {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 39 |     width: u32,
[INFO] [stdout] 40 |     height: u32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]   --> learning/src/smart_pointers/rc_pointers.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Cons(T, Rc<ListRc<T>>),
[INFO] [stdout]    |     ----    ^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 11 -     Cons(T, Rc<ListRc<T>>),
[INFO] [stdout] 11 +     Cons(T, ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]  --> learning/src/smart_pointers/rc_with_refcell.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Cons(Rc<RefCell<i32>>, Rc<List>),
[INFO] [stdout]   |     ---- ^^^^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 6 -     Cons(Rc<RefCell<i32>>, Rc<List>),
[INFO] [stdout] 6 +     Cons((), ()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reject` is never used
[INFO] [stdout]   --> learning/src/oop/pattern_state_example.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | trait State {
[INFO] [stdout]    |       ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn reject(self: Box<Self>) -> Box<dyn State>;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rejected` is never constructed
[INFO] [stdout]    --> learning/src/oop/pattern_state_example.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 106 | struct Rejected {}
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> learning/src/patterns_mappings/destructurization.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Color` is never used
[INFO] [stdout]  --> learning/src/patterns_mappings/destructurization.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum Color {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `desctructurization_struct` is never used
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn desctructurization_struct() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `desctructurization_struct_shorter` is never used
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn desctructurization_struct_shorter() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `desctructurization_struct_with_match` is never used
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn desctructurization_struct_with_match() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `desctructurization_enum` is never used
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn desctructurization_enum() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `desctructurization_tuples` is never used
[INFO] [stdout]   --> learning/src/patterns_mappings/destructurization.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn desctructurization_tuples() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `y` and `z` are never read
[INFO] [stdout]  --> learning/src/patterns_mappings/wildcards.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point {
[INFO] [stdout]   |        ----- fields in this struct
[INFO] [stdout] 2 |     x: i32,
[INFO] [stdout] 3 |     y: i32,
[INFO] [stdout]   |     ^
[INFO] [stdout] 4 |     z: i32,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Millimeters` is never constructed
[INFO] [stdout]   --> learning/src/advanced_traits/default_common_types_and_operator_overload.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | struct Millimeters(u32);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Meters` is never constructed
[INFO] [stdout]   --> learning/src/advanced_traits/default_common_types_and_operator_overload.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct Meters(u32);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `baby_name` is never used
[INFO] [stdout]   --> learning/src/advanced_traits/call_methods_and_functions_with_the_same_name.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl Dog {
[INFO] [stdout]    | -------- associated function in this implementation
[INFO] [stdout] 49 |     fn baby_name() -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_long_type` is never used
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn takes_long_type(f: Box<dyn Fn() + Send + 'static>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_long_type` is never used
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn returns_long_type() -> Box<dyn Fn() + Send + 'static> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_long_type` is never used
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn takes_long_type(f: Thunk) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_long_type` is never used
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn returns_long_type() -> Thunk {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Result` is never used
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 |     type Result<T> = std::result::Result<T, std::io::Error>;
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Write` is never used
[INFO] [stdout]   --> learning/src/advanced_types/synonym_types.rs:44:15
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub trait Write {
[INFO] [stdout]    |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> learning/src/advanced_functions_and_closures/function_pointer.rs:23:15
[INFO] [stdout]    |
[INFO] [stdout] 23 |         Value(u32),
[INFO] [stdout]    |         ----- ^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 23 -         Value(u32),
[INFO] [stdout] 23 +         Value(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Stop` is never constructed
[INFO] [stdout]   --> learning/src/advanced_functions_and_closures/function_pointer.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     enum Status {
[INFO] [stdout]    |          ------ variant in this enum
[INFO] [stdout] 23 |         Value(u32),
[INFO] [stdout] 24 |         Stop,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_closure` is never used
[INFO] [stdout]  --> learning/src/advanced_functions_and_closures/return_closures.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn returns_closure() -> Box<dyn Fn(i32) -> i32> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> learning/src/unsafe_rust/call_unsafe_functions_or_methods.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         drop(*ptr);
[INFO] [stdout]    |         ^^^^^----^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              argument has type `i32`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 10 -         drop(*ptr);
[INFO] [stdout] 10 +         let _ = *ptr;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]   --> learning/src/unsafe_rust/access_change_static_variables.rs:13:29
[INFO] [stdout]    |
[INFO] [stdout] 13 |         println!("COUNTER: {COUNTER}");
[INFO] [stdout]    |                             ^^^^^^^ shared reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]    = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]    = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]   --> learning/src/advanced_functions_and_closures/function_pointer.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     vec_example.iter().map(|i| i.to_string()).collect::<String>();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let _ = vec_example.iter().map(|i| i.to_string()).collect::<String>();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]   --> learning/src/advanced_functions_and_closures/function_pointer.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     vec_example.iter().map(ToString::to_string).collect::<String>();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let _ = vec_example.iter().map(ToString::to_string).collect::<String>();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde_fmt v1.0.3
[INFO] [stderr]     Checking erased-serde v0.4.5
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]     Checking value-bag-serde1 v1.9.0
[INFO] [stderr]     Checking value-bag v1.9.0
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking chrono v0.4.38
[INFO] [stderr]     Checking serde_qs v0.8.5
[INFO] [stderr]     Checking serde_spanned v0.6.6
[INFO] [stderr]     Checking toml_datetime v0.6.6
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking tungstenite v0.21.0
[INFO] [stderr]     Checking polling v3.7.0
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking uuid v1.8.0
[INFO] [stderr]     Checking toml_edit v0.22.13
[INFO] [stderr]     Checking async-io v2.3.2
[INFO] [stderr]    Compiling uncased v0.9.10
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking zstd v0.13.1
[INFO] [stderr]     Checking actix-router v0.5.3
[INFO] [stderr]     Checking async-signal v0.2.6
[INFO] [stderr]     Checking async-global-executor v2.4.1
[INFO] [stderr]     Checking async-process v1.8.1
[INFO] [stderr]     Checking femme v2.2.1
[INFO] [stderr]     Checking ubyte v0.10.4
[INFO] [stderr]     Checking tasks v0.1.0 (/opt/rustwide/workdir/tasks)
[INFO] [stdout] warning: unused imports: `Add` and `Sub`
[INFO] [stdout]  --> tasks/src/has_a_deadline_been_reached.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Add, Sub};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TimeDelta`
[INFO] [stdout]  --> tasks/src/has_a_deadline_been_reached.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use chrono::{NaiveDate, TimeDelta, Utc};
[INFO] [stdout]   |                         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `decode` and `encode`
[INFO] [stdout]  --> tasks/src/run_length_encoding.rs:1:55
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::run_length_encoding::run_length_encoding::{decode, encode};
[INFO] [stdout]   |                                                       ^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `vigenere::*`
[INFO] [stdout]   --> tasks/src/vigenere_cipher.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | use vigenere::*;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stdout] warning: function `median` is never used
[INFO] [stdout]  --> tasks/src/calculate_the_median.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn median(mut arr: Vec<f32>) -> Option<f32> {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unique` is never used
[INFO] [stdout]  --> tasks/src/find_unique_items.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn unique<'a, T>(arr: &'a Vec<T>) -> Vec<T>
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `info` is never used
[INFO] [stdout]  --> tasks/src/print_any_text_type.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn info<T: Debug + ?Sized>(a: &T) {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sort_usernames` is never used
[INFO] [stdout]  --> tasks/src/case_insensitive_sort.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn sort_usernames<T: AsRef<str>>(usernames: &mut Vec<T>) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Pulse` is never used
[INFO] [stdout]  --> tasks/src/convert_text_to_morse_code.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum Pulse {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Letter` is never used
[INFO] [stdout]  --> tasks/src/convert_text_to_morse_code.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | type Letter = Vec<Pulse>;
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Message` is never used
[INFO] [stdout]   --> tasks/src/convert_text_to_morse_code.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | type Message = Vec<Letter>;
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MorseCode` is never used
[INFO] [stdout]   --> tasks/src/convert_text_to_morse_code.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | trait MorseCode {
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ImportantEvent` is never constructed
[INFO] [stdout]  --> tasks/src/has_a_deadline_been_reached.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct ImportantEvent {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Deadline` is never used
[INFO] [stdout]  --> tasks/src/has_a_deadline_been_reached.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | trait Deadline {
[INFO] [stdout]   |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Temperature` is never constructed
[INFO] [stdout]  --> tasks/src/convert_between_celsius_and_fahrenheit.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Temperature {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `to_celsius`, and `to_fahrenheit` are never used
[INFO] [stdout]   --> tasks/src/convert_between_celsius_and_fahrenheit.rs:6:8
[INFO] [stdout]    |
[INFO] [stdout]  5 | impl Temperature {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout]  6 |     fn new(degrees: f32) -> Temperature {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn to_celsius(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn to_fahrenheit(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_with_missing` is never used
[INFO] [stdout]  --> tasks/src/sum_a_list_of_numbers_with_missing_values.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn sum_with_missing(numbers: Vec<Option<i32>>) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `weeks_between` is never used
[INFO] [stdout]  --> tasks/src/calculate_the_number_of_weeks_between_two_dates.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn weeks_between(a: &str, b: &str) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Isbn` is never constructed
[INFO] [stdout]  --> tasks/src/validate_isbn_number.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Isbn {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_check_digit` is never used
[INFO] [stdout]   --> tasks/src/validate_isbn_number.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn calculate_check_digit(digits: &[u8]) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FileMetadata` is never used
[INFO] [stdout]  --> tasks/src/check_if_a_file_exists.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait FileMetadata {
[INFO] [stdout]   |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rgb` is never constructed
[INFO] [stdout]  --> tasks/src/interpret_an_rgb_hex_color.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Rgb {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `RgbChannels` is never used
[INFO] [stdout]   --> tasks/src/interpret_an_rgb_hex_color.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | trait RgbChannels {
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ParseColorError` is never used
[INFO] [stdout]   --> tasks/src/interpret_an_rgb_hex_color.rs:34:6
[INFO] [stdout]    |
[INFO] [stdout] 34 | enum ParseColorError {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `process_stack` is never used
[INFO] [stdout]  --> tasks/src/run_length_encoding.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn process_stack(stack: &mut VecDeque<u8>) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode` is never used
[INFO] [stdout]   --> tasks/src/run_length_encoding.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn encode(text: &str) -> String {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode_no_stack` is never used
[INFO] [stdout]   --> tasks/src/run_length_encoding.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn encode_no_stack(text: &str) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode` is never used
[INFO] [stdout]   --> tasks/src/run_length_encoding.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn decode(text: &str) -> String {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `flexible_date_parse` is never used
[INFO] [stdout]  --> tasks/src/handle_inconsistent_dates.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn flexible_date_parse(text: &str) -> Option<NaiveDate> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Node` is never used
[INFO] [stdout]  --> tasks/src/travel_planner.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Node = usize;
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Cost` is never used
[INFO] [stdout]  --> tasks/src/travel_planner.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | type Cost = usize;
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Graph` is never constructed
[INFO] [stdout]  --> tasks/src/travel_planner.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Graph {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_edge_list` is never used
[INFO] [stdout]   --> tasks/src/travel_planner.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Graph {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 13 |     fn from_edge_list(edge_list: &Vec<(Node, Node, Cost)>) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HeapNode` is never constructed
[INFO] [stdout]   --> tasks/src/travel_planner.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct HeapNode {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shortest_path` is never used
[INFO] [stdout]   --> tasks/src/travel_planner.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn shortest_path(g: &Graph, start: Node, goal: Node) -> Option<(Vec<Node>, Cost)> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encrypt` is never used
[INFO] [stdout]  --> tasks/src/vigenere_cipher.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub fn encrypt(plaintext: &str, key: &str) -> String {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decrypt` is never used
[INFO] [stdout]   --> tasks/src/vigenere_cipher.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn decrypt(ciphertext: &str, key: &str) -> String {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `encode`
[INFO] [stdout]  --> tasks/src/run_length_encoding.rs:1:63
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::run_length_encoding::run_length_encoding::{decode, encode};
[INFO] [stdout]   |                                                               ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `chrono::NaiveDate::from_ymd`: use `from_ymd_opt()` instead
[INFO] [stdout]   --> tasks/src/handle_inconsistent_dates.rs:27:67
[INFO] [stdout]    |
[INFO] [stdout] 27 |     assert_eq!(flexible_date_parse("2010-12-11"), Some(NaiveDate::from_ymd(2010, 12, 11)))
[INFO] [stdout]    |                                                                   ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `chrono::NaiveDate::from_ymd`: use `from_ymd_opt()` instead
[INFO] [stdout]   --> tasks/src/handle_inconsistent_dates.rs:32:68
[INFO] [stdout]    |
[INFO] [stdout] 32 |     assert_eq!(flexible_date_parse("1999/Mar/02"), Some(NaiveDate::from_ymd(1999, 3, 2)))
[INFO] [stdout]    |                                                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `chrono::NaiveDate::from_ymd`: use `from_ymd_opt()` instead
[INFO] [stdout]   --> tasks/src/handle_inconsistent_dates.rs:37:68
[INFO] [stdout]    |
[INFO] [stdout] 37 |     assert_eq!(flexible_date_parse("01.Mar.2021"), Some(NaiveDate::from_ymd(2021, 3, 1)))
[INFO] [stdout]    |                                                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `chrono::NaiveDate::from_ymd`: use `from_ymd_opt()` instead
[INFO] [stdout]   --> tasks/src/handle_inconsistent_dates.rs:42:68
[INFO] [stdout]    |
[INFO] [stdout] 42 |     assert_eq!(flexible_date_parse("Apr.05.2021"), Some(NaiveDate::from_ymd(2021, 4, 5)))
[INFO] [stdout]    |                                                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling actix-web-codegen v4.2.2
[INFO] [stderr]     Checking toml v0.8.13
[INFO] [stdout] warning: methods `exists` and `is_readable` are never used
[INFO] [stdout]   --> tasks/src/check_if_a_file_exists.rs:6:8
[INFO] [stdout]    |
[INFO] [stdout]  5 | trait FileMetadata {
[INFO] [stdout]    |       ------------ methods in this trait
[INFO] [stdout]  6 |     fn exists(&self) -> bool;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 10 |     fn is_readable(&self) -> bool;
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking figment v0.10.19
[INFO] [stderr]     Checking async-session v2.0.1
[INFO] [stderr]     Checking tokio-util v0.7.11
[INFO] [stderr]     Checking tokio-tungstenite v0.21.0
[INFO] [stderr]     Checking tokio-stream v0.1.15
[INFO] [stderr]     Checking actix-rt v2.9.0
[INFO] [stderr]     Checking tokio_async v0.1.0 (/opt/rustwide/workdir/tokio_async)
[INFO] [stderr]     Checking chat-tokio-stream v0.1.0 (/opt/rustwide/workdir/chat-tokio-stream)
[INFO] [stderr]     Checking http-client v6.5.3
[INFO] [stderr]     Checking actix-server v2.3.0
[INFO] [stderr]     Checking async-h1 v2.3.4
[INFO] [stderr]     Checking async-sse v4.1.0
[INFO] [stderr]     Checking h2 v0.3.26
[INFO] [stderr]     Checking actix-codec v0.5.2
[INFO] [stderr]     Checking multer v3.1.0
[INFO] [stderr]     Checking tide v0.16.0
[INFO] [stderr]     Checking server_with_tide v0.1.0 (/opt/rustwide/workdir/server_with_tide)
[INFO] [stderr]     Checking hyper v0.14.28
[INFO] [stderr]     Checking actix-http v3.7.0
[INFO] [stderr]     Checking actix-web v4.6.0
[INFO] [stderr]     Checking warp v0.3.7
[INFO] [stderr]     Checking rocket_http v0.5.1
[INFO] [stderr]     Checking server_with_actix v0.1.0 (/opt/rustwide/workdir/server_with_actix)
[INFO] [stderr]     Checking rust_websocket v0.1.0 (/opt/rustwide/workdir/rust_websocket)
[INFO] [stderr]     Checking server_with_warp v0.1.0 (/opt/rustwide/workdir/server_with_warp)
[INFO] [stdout] warning: variant `InternalServerError` is never constructed
[INFO] [stdout]   --> server_with_warp/src/main.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | enum Error {
[INFO] [stdout]    |      ----- variant in this enum
[INFO] [stdout] 44 |     NotFoundError,
[INFO] [stdout] 45 |     InternalServerError,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<WithStatus<Json>, Infallible>
[INFO] [stdout]   --> server_with_warp/src/main.rs:55:77
[INFO] [stdout]    |
[INFO] [stdout] 55 |   async fn handle_rejection(err: Rejection) -> Result<impl Reply, Infallible> {
[INFO] [stdout]    |  _____________________________________________________________________________^
[INFO] [stdout] 56 | |     let code;
[INFO] [stdout] 57 | |     let message;
[INFO] [stdout] ...  |
[INFO] [stdout] 90 | |     Ok(warp::reply::with_status(json, code))
[INFO] [stdout] 91 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<WithStatus<Json>, Infallible>
[INFO] [stdout]   --> server_with_warp/src/main.rs:55:77
[INFO] [stdout]    |
[INFO] [stdout] 55 |   async fn handle_rejection(err: Rejection) -> Result<impl Reply, Infallible> {
[INFO] [stdout]    |  _____________________________________________________________________________^
[INFO] [stdout] 56 | |     let code;
[INFO] [stdout] 57 | |     let message;
[INFO] [stdout] ...  |
[INFO] [stdout] 90 | |     Ok(warp::reply::with_status(json, code))
[INFO] [stdout] 91 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<WithStatus<Json>, Infallible>
[INFO] [stdout]   --> server_with_warp/src/main.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 90 |     Ok(warp::reply::with_status(json, code))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `server_with_warp` (bin "server_with_warp") due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variant `InternalServerError` is never constructed
[INFO] [stdout]   --> server_with_warp/src/main.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | enum Error {
[INFO] [stdout]    |      ----- variant in this enum
[INFO] [stdout] 44 |     NotFoundError,
[INFO] [stdout] 45 |     InternalServerError,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<WithStatus<warp::reply::Json>, Infallible>
[INFO] [stdout]   --> server_with_warp/src/main.rs:55:77
[INFO] [stdout]    |
[INFO] [stdout] 55 |   async fn handle_rejection(err: Rejection) -> Result<impl Reply, Infallible> {
[INFO] [stdout]    |  _____________________________________________________________________________^
[INFO] [stdout] 56 | |     let code;
[INFO] [stdout] 57 | |     let message;
[INFO] [stdout] ...  |
[INFO] [stdout] 90 | |     Ok(warp::reply::with_status(json, code))
[INFO] [stdout] 91 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<WithStatus<warp::reply::Json>, Infallible>
[INFO] [stdout]   --> server_with_warp/src/main.rs:55:77
[INFO] [stdout]    |
[INFO] [stdout] 55 |   async fn handle_rejection(err: Rejection) -> Result<impl Reply, Infallible> {
[INFO] [stdout]    |  _____________________________________________________________________________^
[INFO] [stdout] 56 | |     let code;
[INFO] [stdout] 57 | |     let message;
[INFO] [stdout] ...  |
[INFO] [stdout] 90 | |     Ok(warp::reply::with_status(json, code))
[INFO] [stdout] 91 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<WithStatus<warp::reply::Json>, Infallible>
[INFO] [stdout]   --> server_with_warp/src/main.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 90 |     Ok(warp::reply::with_status(json, code))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `server_with_warp` (bin "server_with_warp" test) due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "23e0513704d564b940eac7fd98448a6909a14d26130a33954f5a5399bfc36143", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23e0513704d564b940eac7fd98448a6909a14d26130a33954f5a5399bfc36143", kill_on_drop: false }`
[INFO] [stdout] 23e0513704d564b940eac7fd98448a6909a14d26130a33954f5a5399bfc36143
