[INFO] fetching crate guessing_game_viggin 0.1.0... [INFO] testing guessing_game_viggin-0.1.0 against 1.49.0 for beta-1.50-1 [INFO] extracting crate guessing_game_viggin 0.1.0 into /workspace/builds/worker-11/source [INFO] validating manifest of crates.io crate guessing_game_viggin 0.1.0 on toolchain 1.49.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate guessing_game_viggin 0.1.0 [INFO] finished tweaking crates.io crate guessing_game_viggin 0.1.0 [INFO] tweaked toml for crates.io crate guessing_game_viggin 0.1.0 written to /workspace/builds/worker-11/source/Cargo.toml [INFO] crate crates.io crate guessing_game_viggin 0.1.0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b57224c9d711af55c3e7785e307930ed3dce190b73df492ec0952740fdcf75b3 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "b57224c9d711af55c3e7785e307930ed3dce190b73df492ec0952740fdcf75b3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b57224c9d711af55c3e7785e307930ed3dce190b73df492ec0952740fdcf75b3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b57224c9d711af55c3e7785e307930ed3dce190b73df492ec0952740fdcf75b3", kill_on_drop: false }` [INFO] [stdout] b57224c9d711af55c3e7785e307930ed3dce190b73df492ec0952740fdcf75b3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3e7459c48b53da838e7c7c66017e385d745000e64d1f19cb95764eecb61724ad [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "3e7459c48b53da838e7c7c66017e385d745000e64d1f19cb95764eecb61724ad", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.14 [INFO] [stderr] Compiling memchr v2.3.2 [INFO] [stderr] Compiling arc-swap v0.4.4 [INFO] [stderr] Compiling futures-channel v0.3.4 [INFO] [stderr] Compiling http v0.2.0 [INFO] [stderr] Compiling num_cpus v1.12.0 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling openssl-sys v0.9.54 [INFO] [stderr] Compiling native-tls v0.2.3 [INFO] [stderr] Compiling mio v0.6.21 [INFO] [stderr] Compiling serde_json v1.0.48 [INFO] [stderr] Compiling serde_urlencoded v0.6.1 [INFO] [stderr] Compiling mime_guess v2.0.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling signal-hook-registry v1.2.0 [INFO] [stderr] Compiling openssl v0.10.28 [INFO] [stderr] Compiling mio-uds v0.6.7 [INFO] [stderr] Compiling http-body v0.3.1 [INFO] [stderr] Compiling proc-macro-hack v0.5.11 [INFO] [stderr] Compiling tokio-macros v0.2.4 [INFO] [stderr] Compiling pin-project-internal v0.4.8 [INFO] [stderr] Compiling tokio v0.2.11 [INFO] [stderr] Compiling futures-macro v0.3.4 [INFO] [stderr] Compiling pin-project v0.4.8 [INFO] [stderr] Compiling futures-util v0.3.4 [INFO] [stderr] Compiling tokio-util v0.2.0 [INFO] [stderr] Compiling tokio-tls v0.3.0 [INFO] [stderr] Compiling futures-executor v0.3.4 [INFO] [stderr] Compiling h2 v0.2.1 [INFO] [stderr] Compiling futures v0.3.4 [INFO] [stderr] Compiling hyper v0.13.2 [INFO] [stderr] Compiling hyper-tls v0.4.1 [INFO] [stderr] Compiling reqwest v0.10.1 [INFO] [stderr] Compiling guessing_game_viggin v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::str::FromStr` [INFO] [stdout] --> src/lib/config.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::str::FromStr; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `args` [INFO] [stdout] --> src/lib/config.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let args: Vec = env::args().collect(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_args` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c1` [INFO] [stdout] --> src/lib/pub_use.rs:31:16 [INFO] [stdout] | [INFO] [stdout] 31 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_c1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c2` [INFO] [stdout] --> src/lib/pub_use.rs:31:34 [INFO] [stdout] | [INFO] [stdout] 31 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_c2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `meta` [INFO] [stdout] --> src/bin/errors/errors.rs:31:15 [INFO] [stdout] | [INFO] [stdout] 31 | if let Ok(meta) = f.metadata() { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_meta` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/bin/errors/errors.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | read_username_from_file_v2(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/bin/errors/errors.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | read_username_from_file_v3(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/bin/errors/errors.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | fs::remove_file("hello.txt"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/bin/closures/main.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | let x = 4; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/bin/minigrep/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `shoes_in_my_size` [INFO] [stdout] --> src/bin/closures/iterators.rs:61:4 [INFO] [stdout] | [INFO] [stdout] 61 | fn shoes_in_my_size(shoes: Vec, shoe_size: u32) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `can_hold` [INFO] [stdout] --> src/bin/tests/main.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 14 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/bin/closures/iterators.rs:92:8 [INFO] [stdout] | [INFO] [stdout] 92 | fn new() -> Counter { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `simulated_expensive_calculation` [INFO] [stdout] --> src/bin/closures/main.rs:9:4 [INFO] [stdout] | [INFO] [stdout] 9 | fn simulated_expensive_calculation(intensity: u32) -> u32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `inner_func` [INFO] [stdout] --> src/bin/closures/main.rs:31:4 [INFO] [stdout] | [INFO] [stdout] 31 | fn inner_func(){ [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `era` [INFO] [stdout] --> src/bin/guessing_game/rect.rs:8:12 [INFO] [stdout] | [INFO] [stdout] 8 | pub fn era(&self) -> u32 { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `print_x` [INFO] [stdout] --> src/bin/guessing_game/rect.rs:12:12 [INFO] [stdout] | [INFO] [stdout] 12 | pub fn print_x(&self , format: &str) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/bin/generics/traits.rs:71:56 [INFO] [stdout] | [INFO] [stdout] 71 | fn some_function(t: T, u: U) -> i32 {3} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `u` [INFO] [stdout] --> src/bin/generics/traits.rs:71:62 [INFO] [stdout] | [INFO] [stdout] 71 | fn some_function(t: T, u: U) -> i32 {3} [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] --> src/bin/generics/traits.rs:72:35 [INFO] [stdout] | [INFO] [stdout] 72 | fn some_function_with_where(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] --> src/bin/generics/traits.rs:72:41 [INFO] [stdout] | [INFO] [stdout] 72 | fn some_function_with_where(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: `v` [INFO] [stdout] --> src/bin/collections/main.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let v: Vec = Vec::new(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `s2` is never read [INFO] [stdout] --> src/bin/collections/main.rs:71:5 [INFO] [stdout] | [INFO] [stdout] 71 | s2 = String::from("xxx"); [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/collections/main.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let mut v = vec![1, 2, 3, 4, 5]; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `notifyBound` [INFO] [stdout] --> src/bin/generics/traits.rs:59:8 [INFO] [stdout] | [INFO] [stdout] 59 | pub fn notifyBound(item: T) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `notifyPlusSyntax` [INFO] [stdout] --> src/bin/generics/traits.rs:63:8 [INFO] [stdout] | [INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `notifyWow` [INFO] [stdout] --> src/bin/generics/traits.rs:67:8 [INFO] [stdout] | [INFO] [stdout] 67 | pub fn notifyWow(item: T) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `some_function` [INFO] [stdout] --> src/bin/generics/traits.rs:71:4 [INFO] [stdout] | [INFO] [stdout] 71 | fn some_function(t: T, u: U) -> i32 {3} [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `some_function_with_where` [INFO] [stdout] --> src/bin/generics/traits.rs:72:4 [INFO] [stdout] | [INFO] [stdout] 72 | fn some_function_with_where(t: T, u: U) -> i32 [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `returns_summarizable` [INFO] [stdout] --> src/bin/generics/traits.rs:78:4 [INFO] [stdout] | [INFO] [stdout] 78 | fn returns_summarizable() -> impl Summary { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `largest_copy` [INFO] [stdout] --> src/bin/generics/traits.rs:88:4 [INFO] [stdout] | [INFO] [stdout] 88 | fn largest_copy(list: &[T]) -> T { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `largest_clone` [INFO] [stdout] --> src/bin/generics/traits.rs:100:4 [INFO] [stdout] | [INFO] [stdout] 100 | fn largest_clone(list: &[T]) -> T [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `largest_ref` [INFO] [stdout] --> src/bin/generics/traits.rs:113:4 [INFO] [stdout] | [INFO] [stdout] 113 | fn largest_ref(list: &[T]) -> &T { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Pair` [INFO] [stdout] --> src/bin/generics/traits.rs:123:8 [INFO] [stdout] | [INFO] [stdout] 123 | struct Pair{ [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `cmp_display` [INFO] [stdout] --> src/bin/generics/traits.rs:129:8 [INFO] [stdout] | [INFO] [stdout] 129 | fn cmp_display(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `is_this_an_extension_function` [INFO] [stdout] --> src/bin/generics/traits.rs:154:4 [INFO] [stdout] | [INFO] [stdout] 154 | fn is_this_an_extension_function(){ [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `longest_with_an_announcement` [INFO] [stdout] --> src/bin/generics/lifetimes.rs:22:4 [INFO] [stdout] | [INFO] [stdout] 22 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `take_ownership` [INFO] [stdout] --> src/bin/generics/main.rs:26:4 [INFO] [stdout] | [INFO] [stdout] 26 | fn take_ownership(t: Tweet){ [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notifyBound` should have a snake case name [INFO] [stdout] --> src/bin/generics/traits.rs:59:8 [INFO] [stdout] | [INFO] [stdout] 59 | pub fn notifyBound(item: T) { [INFO] [stdout] | ^^^^^^^^^^^ help: convert the identifier to snake case: `notify_bound` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/collections/main.rs:82:9 [INFO] [stdout] | [INFO] [stdout] 82 | let mut sss = SSS { [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notifyPlusSyntax` should have a snake case name [INFO] [stdout] --> src/bin/generics/traits.rs:63:8 [INFO] [stdout] | [INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `notify_plus_syntax` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notifyWow` should have a snake case name [INFO] [stdout] --> src/bin/generics/traits.rs:67:8 [INFO] [stdout] | [INFO] [stdout] 67 | pub fn notifyWow(item: T) { [INFO] [stdout] | ^^^^^^^^^ help: convert the identifier to snake case: `notify_wow` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `accessing` [INFO] [stdout] --> src/bin/collections/main.rs:11:4 [INFO] [stdout] | [INFO] [stdout] 11 | fn accessing() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `no_mutable_and_imutable_in_same_scope` [INFO] [stdout] --> src/bin/collections/main.rs:20:4 [INFO] [stdout] | [INFO] [stdout] 20 | fn no_mutable_and_imutable_in_same_scope() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `edit_in_place` [INFO] [stdout] --> src/bin/collections/main.rs:27:4 [INFO] [stdout] | [INFO] [stdout] 27 | fn edit_in_place() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `enum_vec` [INFO] [stdout] --> src/bin/collections/main.rs:35:4 [INFO] [stdout] | [INFO] [stdout] 35 | fn enum_vec() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `stringss` [INFO] [stdout] --> src/bin/collections/main.rs:60:4 [INFO] [stdout] | [INFO] [stdout] 60 | fn stringss() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `vec_of_stracts` [INFO] [stdout] --> src/bin/collections/main.rs:75:4 [INFO] [stdout] | [INFO] [stdout] 75 | fn vec_of_stracts() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `update_entry_in_a_map` [INFO] [stdout] --> src/bin/collections/main.rs:97:4 [INFO] [stdout] | [INFO] [stdout] 97 | fn update_entry_in_a_map() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: structure field `Id` should have a snake case name [INFO] [stdout] --> src/bin/collections/main.rs:78:9 [INFO] [stdout] | [INFO] [stdout] 78 | Id: String, [INFO] [stdout] | ^^ help: convert the identifier to snake case (notice the capitalization): `id` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `word_count` [INFO] [stdout] --> src/bin/hash/main.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | let word_count : HashMap<_,_> = v.iter() [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_word_count` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `DA` [INFO] [stdout] --> src/bin/enums/main.rs:28:8 [INFO] [stdout] | [INFO] [stdout] 28 | struct DA { [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `zzip` [INFO] [stdout] --> src/bin/hash/main.rs:60:4 [INFO] [stdout] | [INFO] [stdout] 60 | fn zzip(v : &Vec){ [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `resp` [INFO] [stdout] --> src/bin/http_async/main.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let resp = reqwest::get("https://httpbin.org/ip") [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_resp` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `read_username_from_file` [INFO] [stdout] --> src/bin/http_async/main.rs:24:4 [INFO] [stdout] | [INFO] [stdout] 24 | fn read_username_from_file() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 21 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 57.67s [INFO] running `Command { std: "docker" "inspect" "3e7459c48b53da838e7c7c66017e385d745000e64d1f19cb95764eecb61724ad", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3e7459c48b53da838e7c7c66017e385d745000e64d1f19cb95764eecb61724ad", kill_on_drop: false }` [INFO] [stdout] 3e7459c48b53da838e7c7c66017e385d745000e64d1f19cb95764eecb61724ad [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 021a3bed4f8de25be59b40042c299bb9b1fddc8e96b11684dd4c6932c80b8157 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "021a3bed4f8de25be59b40042c299bb9b1fddc8e96b11684dd4c6932c80b8157", kill_on_drop: false }` [INFO] [stdout] warning: unused import: `std::str::FromStr` [INFO] [stdout] --> src/lib/config.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::str::FromStr; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `args` [INFO] [stdout] --> src/lib/config.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let args: Vec = env::args().collect(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_args` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling guessing_game_viggin v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `c1` [INFO] [stdout] --> src/lib/pub_use.rs:31:16 [INFO] [stdout] | [INFO] [stdout] 31 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_c1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c2` [INFO] [stdout] --> src/lib/pub_use.rs:31:34 [INFO] [stdout] | [INFO] [stdout] 31 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_c2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `era` [INFO] [stdout] --> src/bin/guessing_game/rect.rs:8:12 [INFO] [stdout] | [INFO] [stdout] 8 | pub fn era(&self) -> u32 { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `print_x` [INFO] [stdout] --> src/bin/guessing_game/rect.rs:12:12 [INFO] [stdout] | [INFO] [stdout] 12 | pub fn print_x(&self , format: &str) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> src/bin/collections/main.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let v: Vec = Vec::new(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `s2` is never read [INFO] [stdout] --> src/bin/collections/main.rs:71:5 [INFO] [stdout] | [INFO] [stdout] 71 | s2 = String::from("xxx"); [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/collections/main.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let mut v = vec![1, 2, 3, 4, 5]; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/collections/main.rs:82:9 [INFO] [stdout] | [INFO] [stdout] 82 | let mut sss = SSS { [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `accessing` [INFO] [stdout] --> src/bin/collections/main.rs:11:4 [INFO] [stdout] | [INFO] [stdout] 11 | fn accessing() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `no_mutable_and_imutable_in_same_scope` [INFO] [stdout] --> src/bin/collections/main.rs:20:4 [INFO] [stdout] | [INFO] [stdout] 20 | fn no_mutable_and_imutable_in_same_scope() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `edit_in_place` [INFO] [stdout] --> src/bin/collections/main.rs:27:4 [INFO] [stdout] | [INFO] [stdout] 27 | fn edit_in_place() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `enum_vec` [INFO] [stdout] --> src/bin/collections/main.rs:35:4 [INFO] [stdout] | [INFO] [stdout] 35 | fn enum_vec() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `stringss` [INFO] [stdout] --> src/bin/collections/main.rs:60:4 [INFO] [stdout] | [INFO] [stdout] 60 | fn stringss() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `vec_of_stracts` [INFO] [stdout] --> src/bin/collections/main.rs:75:4 [INFO] [stdout] | [INFO] [stdout] 75 | fn vec_of_stracts() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `update_entry_in_a_map` [INFO] [stdout] --> src/bin/collections/main.rs:97:4 [INFO] [stdout] | [INFO] [stdout] 97 | fn update_entry_in_a_map() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: structure field `Id` should have a snake case name [INFO] [stdout] --> src/bin/collections/main.rs:78:9 [INFO] [stdout] | [INFO] [stdout] 78 | Id: String, [INFO] [stdout] | ^^ help: convert the identifier to snake case (notice the capitalization): `id` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `resp` [INFO] [stdout] --> src/bin/http_async/main.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let resp = reqwest::get("https://httpbin.org/ip") [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_resp` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `read_username_from_file` [INFO] [stdout] --> src/bin/http_async/main.rs:24:4 [INFO] [stdout] | [INFO] [stdout] 24 | fn read_username_from_file() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `can_hold` [INFO] [stdout] --> src/bin/tests/main.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 14 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `DA` [INFO] [stdout] --> src/bin/enums/main.rs:28:8 [INFO] [stdout] | [INFO] [stdout] 28 | struct DA { [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/bin/minigrep/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `word_count` [INFO] [stdout] --> src/bin/hash/main.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | let word_count : HashMap<_,_> = v.iter() [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_word_count` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `zzip` [INFO] [stdout] --> src/bin/hash/main.rs:60:4 [INFO] [stdout] | [INFO] [stdout] 60 | fn zzip(v : &Vec){ [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/bin/generics/traits.rs:71:56 [INFO] [stdout] | [INFO] [stdout] 71 | fn some_function(t: T, u: U) -> i32 {3} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `u` [INFO] [stdout] --> src/bin/generics/traits.rs:71:62 [INFO] [stdout] | [INFO] [stdout] 71 | fn some_function(t: T, u: U) -> i32 {3} [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] --> src/bin/generics/traits.rs:72:35 [INFO] [stdout] | [INFO] [stdout] 72 | fn some_function_with_where(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] --> src/bin/generics/traits.rs:72:41 [INFO] [stdout] | [INFO] [stdout] 72 | fn some_function_with_where(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: function is never used: `notifyBound` [INFO] [stdout] --> src/bin/generics/traits.rs:59:8 [INFO] [stdout] | [INFO] [stdout] 59 | pub fn notifyBound(item: T) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `notifyPlusSyntax` [INFO] [stdout] --> src/bin/generics/traits.rs:63:8 [INFO] [stdout] | [INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `notifyWow` [INFO] [stdout] --> src/bin/generics/traits.rs:67:8 [INFO] [stdout] | [INFO] [stdout] 67 | pub fn notifyWow(item: T) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `some_function` [INFO] [stdout] --> src/bin/generics/traits.rs:71:4 [INFO] [stdout] | [INFO] [stdout] 71 | fn some_function(t: T, u: U) -> i32 {3} [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `some_function_with_where` [INFO] [stdout] --> src/bin/generics/traits.rs:72:4 [INFO] [stdout] | [INFO] [stdout] 72 | fn some_function_with_where(t: T, u: U) -> i32 [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `returns_summarizable` [INFO] [stdout] --> src/bin/generics/traits.rs:78:4 [INFO] [stdout] | [INFO] [stdout] 78 | fn returns_summarizable() -> impl Summary { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `largest_copy` [INFO] [stdout] --> src/bin/generics/traits.rs:88:4 [INFO] [stdout] | [INFO] [stdout] 88 | fn largest_copy(list: &[T]) -> T { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `largest_clone` [INFO] [stdout] --> src/bin/generics/traits.rs:100:4 [INFO] [stdout] | [INFO] [stdout] 100 | fn largest_clone(list: &[T]) -> T [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `largest_ref` [INFO] [stdout] --> src/bin/generics/traits.rs:113:4 [INFO] [stdout] | [INFO] [stdout] 113 | fn largest_ref(list: &[T]) -> &T { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Pair` [INFO] [stdout] --> src/bin/generics/traits.rs:123:8 [INFO] [stdout] | [INFO] [stdout] 123 | struct Pair{ [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `cmp_display` [INFO] [stdout] --> src/bin/generics/traits.rs:129:8 [INFO] [stdout] | [INFO] [stdout] 129 | fn cmp_display(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `is_this_an_extension_function` [INFO] [stdout] --> src/bin/generics/traits.rs:154:4 [INFO] [stdout] | [INFO] [stdout] 154 | fn is_this_an_extension_function(){ [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `longest_with_an_announcement` [INFO] [stdout] --> src/bin/generics/lifetimes.rs:22:4 [INFO] [stdout] | [INFO] [stdout] 22 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `take_ownership` [INFO] [stdout] --> src/bin/generics/main.rs:26:4 [INFO] [stdout] | [INFO] [stdout] 26 | fn take_ownership(t: Tweet){ [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notifyBound` should have a snake case name [INFO] [stdout] --> src/bin/generics/traits.rs:59:8 [INFO] [stdout] | [INFO] [stdout] 59 | pub fn notifyBound(item: T) { [INFO] [stdout] | ^^^^^^^^^^^ help: convert the identifier to snake case: `notify_bound` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notifyPlusSyntax` should have a snake case name [INFO] [stdout] --> src/bin/generics/traits.rs:63:8 [INFO] [stdout] | [INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `notify_plus_syntax` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notifyWow` should have a snake case name [INFO] [stdout] --> src/bin/generics/traits.rs:67:8 [INFO] [stdout] | [INFO] [stdout] 67 | pub fn notifyWow(item: T) { [INFO] [stdout] | ^^^^^^^^^ help: convert the identifier to snake case: `notify_wow` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 21 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `meta` [INFO] [stdout] --> src/bin/errors/errors.rs:31:15 [INFO] [stdout] | [INFO] [stdout] 31 | if let Ok(meta) = f.metadata() { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_meta` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/bin/errors/errors.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | read_username_from_file_v2(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/bin/errors/errors.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | read_username_from_file_v3(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/bin/errors/errors.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | fs::remove_file("hello.txt"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/bin/closures/main.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | let x = 4; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `shoes_in_my_size` [INFO] [stdout] --> src/bin/closures/iterators.rs:61:4 [INFO] [stdout] | [INFO] [stdout] 61 | fn shoes_in_my_size(shoes: Vec, shoe_size: u32) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/bin/closures/iterators.rs:92:8 [INFO] [stdout] | [INFO] [stdout] 92 | fn new() -> Counter { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `simulated_expensive_calculation` [INFO] [stdout] --> src/bin/closures/main.rs:9:4 [INFO] [stdout] | [INFO] [stdout] 9 | fn simulated_expensive_calculation(intensity: u32) -> u32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `inner_func` [INFO] [stdout] --> src/bin/closures/main.rs:31:4 [INFO] [stdout] | [INFO] [stdout] 31 | fn inner_func(){ [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/bin/closures/iterators.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `era` [INFO] [stdout] --> src/bin/guessing_game/rect.rs:8:12 [INFO] [stdout] | [INFO] [stdout] 8 | pub fn era(&self) -> u32 { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `print_x` [INFO] [stdout] --> src/bin/guessing_game/rect.rs:12:12 [INFO] [stdout] | [INFO] [stdout] 12 | pub fn print_x(&self , format: &str) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `DA` [INFO] [stdout] --> src/bin/enums/main.rs:28:8 [INFO] [stdout] | [INFO] [stdout] 28 | struct DA { [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/bin/closures/main.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | let x = 4; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> src/bin/collections/main.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let v: Vec = Vec::new(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `s2` is never read [INFO] [stdout] --> src/bin/collections/main.rs:71:5 [INFO] [stdout] | [INFO] [stdout] 71 | s2 = String::from("xxx"); [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/collections/main.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let mut v = vec![1, 2, 3, 4, 5]; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `simulated_expensive_calculation` [INFO] [stdout] --> src/bin/closures/main.rs:9:4 [INFO] [stdout] | [INFO] [stdout] 9 | fn simulated_expensive_calculation(intensity: u32) -> u32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `inner_func` [INFO] [stdout] --> src/bin/closures/main.rs:31:4 [INFO] [stdout] | [INFO] [stdout] 31 | fn inner_func(){ [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/collections/main.rs:82:9 [INFO] [stdout] | [INFO] [stdout] 82 | let mut sss = SSS { [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `accessing` [INFO] [stdout] --> src/bin/collections/main.rs:11:4 [INFO] [stdout] | [INFO] [stdout] 11 | fn accessing() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `no_mutable_and_imutable_in_same_scope` [INFO] [stdout] --> src/bin/collections/main.rs:20:4 [INFO] [stdout] | [INFO] [stdout] 20 | fn no_mutable_and_imutable_in_same_scope() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `edit_in_place` [INFO] [stdout] --> src/bin/collections/main.rs:27:4 [INFO] [stdout] | [INFO] [stdout] 27 | fn edit_in_place() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `enum_vec` [INFO] [stdout] --> src/bin/collections/main.rs:35:4 [INFO] [stdout] | [INFO] [stdout] 35 | fn enum_vec() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `stringss` [INFO] [stdout] --> src/bin/collections/main.rs:60:4 [INFO] [stdout] | [INFO] [stdout] 60 | fn stringss() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `vec_of_stracts` [INFO] [stdout] --> src/bin/collections/main.rs:75:4 [INFO] [stdout] | [INFO] [stdout] 75 | fn vec_of_stracts() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `update_entry_in_a_map` [INFO] [stdout] --> src/bin/collections/main.rs:97:4 [INFO] [stdout] | [INFO] [stdout] 97 | fn update_entry_in_a_map() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: structure field `Id` should have a snake case name [INFO] [stdout] --> src/bin/collections/main.rs:78:9 [INFO] [stdout] | [INFO] [stdout] 78 | Id: String, [INFO] [stdout] | ^^ help: convert the identifier to snake case (notice the capitalization): `id` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `meta` [INFO] [stdout] --> src/bin/errors/errors.rs:31:15 [INFO] [stdout] | [INFO] [stdout] 31 | if let Ok(meta) = f.metadata() { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_meta` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::str::FromStr` [INFO] [stdout] --> src/lib/config.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::str::FromStr; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/bin/minigrep/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `resp` [INFO] [stdout] --> src/bin/http_async/main.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let resp = reqwest::get("https://httpbin.org/ip") [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_resp` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `read_username_from_file` [INFO] [stdout] --> src/bin/http_async/main.rs:24:4 [INFO] [stdout] | [INFO] [stdout] 24 | fn read_username_from_file() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `args` [INFO] [stdout] --> src/lib/config.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let args: Vec = env::args().collect(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_args` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c1` [INFO] [stdout] --> src/lib/pub_use.rs:31:16 [INFO] [stdout] | [INFO] [stdout] 31 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_c1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c2` [INFO] [stdout] --> src/lib/pub_use.rs:31:34 [INFO] [stdout] | [INFO] [stdout] 31 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_c2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `word_count` [INFO] [stdout] --> src/bin/hash/main.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | let word_count : HashMap<_,_> = v.iter() [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_word_count` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `zzip` [INFO] [stdout] --> src/bin/hash/main.rs:60:4 [INFO] [stdout] | [INFO] [stdout] 60 | fn zzip(v : &Vec){ [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/bin/generics/traits.rs:71:56 [INFO] [stdout] | [INFO] [stdout] 71 | fn some_function(t: T, u: U) -> i32 {3} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `u` [INFO] [stdout] --> src/bin/generics/traits.rs:71:62 [INFO] [stdout] | [INFO] [stdout] 71 | fn some_function(t: T, u: U) -> i32 {3} [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] --> src/bin/generics/traits.rs:72:35 [INFO] [stdout] | [INFO] [stdout] 72 | fn some_function_with_where(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] --> src/bin/generics/traits.rs:72:41 [INFO] [stdout] | [INFO] [stdout] 72 | fn some_function_with_where(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 `std::result::Result` that must be used [INFO] [stdout] --> src/bin/errors/errors.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | read_username_from_file_v2(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/bin/errors/errors.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | read_username_from_file_v3(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/bin/errors/errors.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | fs::remove_file("hello.txt"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `notifyBound` [INFO] [stdout] --> src/bin/generics/traits.rs:59:8 [INFO] [stdout] | [INFO] [stdout] 59 | pub fn notifyBound(item: T) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `notifyPlusSyntax` [INFO] [stdout] --> src/bin/generics/traits.rs:63:8 [INFO] [stdout] | [INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `notifyWow` [INFO] [stdout] --> src/bin/generics/traits.rs:67:8 [INFO] [stdout] | [INFO] [stdout] 67 | pub fn notifyWow(item: T) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `some_function` [INFO] [stdout] --> src/bin/generics/traits.rs:71:4 [INFO] [stdout] | [INFO] [stdout] 71 | fn some_function(t: T, u: U) -> i32 {3} [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `some_function_with_where` [INFO] [stdout] --> src/bin/generics/traits.rs:72:4 [INFO] [stdout] | [INFO] [stdout] 72 | fn some_function_with_where(t: T, u: U) -> i32 [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `returns_summarizable` [INFO] [stdout] --> src/bin/generics/traits.rs:78:4 [INFO] [stdout] | [INFO] [stdout] 78 | fn returns_summarizable() -> impl Summary { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `largest_copy` [INFO] [stdout] --> src/bin/generics/traits.rs:88:4 [INFO] [stdout] | [INFO] [stdout] 88 | fn largest_copy(list: &[T]) -> T { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `largest_clone` [INFO] [stdout] --> src/bin/generics/traits.rs:100:4 [INFO] [stdout] | [INFO] [stdout] 100 | fn largest_clone(list: &[T]) -> T [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `largest_ref` [INFO] [stdout] --> src/bin/generics/traits.rs:113:4 [INFO] [stdout] | [INFO] [stdout] 113 | fn largest_ref(list: &[T]) -> &T { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Pair` [INFO] [stdout] --> src/bin/generics/traits.rs:123:8 [INFO] [stdout] | [INFO] [stdout] 123 | struct Pair{ [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `cmp_display` [INFO] [stdout] --> src/bin/generics/traits.rs:129:8 [INFO] [stdout] | [INFO] [stdout] 129 | fn cmp_display(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `is_this_an_extension_function` [INFO] [stdout] --> src/bin/generics/traits.rs:154:4 [INFO] [stdout] | [INFO] [stdout] 154 | fn is_this_an_extension_function(){ [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `longest_with_an_announcement` [INFO] [stdout] --> src/bin/generics/lifetimes.rs:22:4 [INFO] [stdout] | [INFO] [stdout] 22 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `take_ownership` [INFO] [stdout] --> src/bin/generics/main.rs:26:4 [INFO] [stdout] | [INFO] [stdout] 26 | fn take_ownership(t: Tweet){ [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notifyBound` should have a snake case name [INFO] [stdout] --> src/bin/generics/traits.rs:59:8 [INFO] [stdout] | [INFO] [stdout] 59 | pub fn notifyBound(item: T) { [INFO] [stdout] | ^^^^^^^^^^^ help: convert the identifier to snake case: `notify_bound` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notifyPlusSyntax` should have a snake case name [INFO] [stdout] --> src/bin/generics/traits.rs:63:8 [INFO] [stdout] | [INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `notify_plus_syntax` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notifyWow` should have a snake case name [INFO] [stdout] --> src/bin/generics/traits.rs:67:8 [INFO] [stdout] | [INFO] [stdout] 67 | pub fn notifyWow(item: T) { [INFO] [stdout] | ^^^^^^^^^ help: convert the identifier to snake case: `notify_wow` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 21 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 2.72s [INFO] running `Command { std: "docker" "inspect" "021a3bed4f8de25be59b40042c299bb9b1fddc8e96b11684dd4c6932c80b8157", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "021a3bed4f8de25be59b40042c299bb9b1fddc8e96b11684dd4c6932c80b8157", kill_on_drop: false }` [INFO] [stdout] 021a3bed4f8de25be59b40042c299bb9b1fddc8e96b11684dd4c6932c80b8157 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] a15c059cae7e50051ed3d1f7f5ab4e28b6155c5f6232a38dc980e65ffad14c74 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "a15c059cae7e50051ed3d1f7f5ab4e28b6155c5f6232a38dc980e65ffad14c74", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `std::str::FromStr` [INFO] [stderr] --> src/lib/config.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::str::FromStr; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `args` [INFO] [stderr] --> src/lib/config.rs:31:9 [INFO] [stderr] | [INFO] [stderr] 31 | let args: Vec = env::args().collect(); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_args` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c1` [INFO] [stderr] --> src/lib/pub_use.rs:31:16 [INFO] [stderr] | [INFO] [stderr] 31 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_c1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c2` [INFO] [stderr] --> src/lib/pub_use.rs:31:34 [INFO] [stderr] | [INFO] [stderr] 31 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_c2` [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::str::FromStr` [INFO] [stderr] --> src/lib/config.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::str::FromStr; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `args` [INFO] [stderr] --> src/lib/config.rs:31:9 [INFO] [stderr] | [INFO] [stderr] 31 | let args: Vec = env::args().collect(); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_args` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c1` [INFO] [stderr] --> src/lib/pub_use.rs:31:16 [INFO] [stderr] | [INFO] [stderr] 31 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_c1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c2` [INFO] [stderr] --> src/lib/pub_use.rs:31:34 [INFO] [stderr] | [INFO] [stderr] 31 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_c2` [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::env` [INFO] [stderr] --> src/bin/minigrep/main.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::env; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `resp` [INFO] [stderr] --> src/bin/http_async/main.rs:15:9 [INFO] [stderr] | [INFO] [stderr] 15 | let resp = reqwest::get("https://httpbin.org/ip") [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_resp` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `read_username_from_file` [INFO] [stderr] --> src/bin/http_async/main.rs:24:4 [INFO] [stderr] | [INFO] [stderr] 24 | fn read_username_from_file() -> Result { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v` [INFO] [stderr] --> src/bin/collections/main.rs:12:9 [INFO] [stderr] | [INFO] [stderr] 12 | let v: Vec = Vec::new(); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: value assigned to `s2` is never read [INFO] [stderr] --> src/bin/collections/main.rs:71:5 [INFO] [stderr] | [INFO] [stderr] 71 | s2 = String::from("xxx"); [INFO] [stderr] | ^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/collections/main.rs:21:9 [INFO] [stderr] | [INFO] [stderr] 21 | let mut v = vec![1, 2, 3, 4, 5]; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/collections/main.rs:82:9 [INFO] [stderr] | [INFO] [stderr] 82 | let mut sss = SSS { [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `accessing` [INFO] [stderr] --> src/bin/collections/main.rs:11:4 [INFO] [stderr] | [INFO] [stderr] 11 | fn accessing() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `no_mutable_and_imutable_in_same_scope` [INFO] [stderr] --> src/bin/collections/main.rs:20:4 [INFO] [stderr] | [INFO] [stderr] 20 | fn no_mutable_and_imutable_in_same_scope() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `edit_in_place` [INFO] [stderr] --> src/bin/collections/main.rs:27:4 [INFO] [stderr] | [INFO] [stderr] 27 | fn edit_in_place() { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `enum_vec` [INFO] [stderr] --> src/bin/collections/main.rs:35:4 [INFO] [stderr] | [INFO] [stderr] 35 | fn enum_vec() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `stringss` [INFO] [stderr] --> src/bin/collections/main.rs:60:4 [INFO] [stderr] | [INFO] [stderr] 60 | fn stringss() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `vec_of_stracts` [INFO] [stderr] --> src/bin/collections/main.rs:75:4 [INFO] [stderr] | [INFO] [stderr] 75 | fn vec_of_stracts() { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `update_entry_in_a_map` [INFO] [stderr] --> src/bin/collections/main.rs:97:4 [INFO] [stderr] | [INFO] [stderr] 97 | fn update_entry_in_a_map() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: structure field `Id` should have a snake case name [INFO] [stderr] --> src/bin/collections/main.rs:78:9 [INFO] [stderr] | [INFO] [stderr] 78 | Id: String, [INFO] [stderr] | ^^ help: convert the identifier to snake case (notice the capitalization): `id` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 12 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `DA` [INFO] [stderr] --> src/bin/enums/main.rs:28:8 [INFO] [stderr] | [INFO] [stderr] 28 | struct DA { [INFO] [stderr] | ^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: unused import: `super::*` [INFO] [stderr] --> src/bin/closures/iterators.rs:7:9 [INFO] [stderr] | [INFO] [stderr] 7 | use super::*; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/bin/closures/main.rs:32:9 [INFO] [stderr] | [INFO] [stderr] 32 | let x = 4; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `simulated_expensive_calculation` [INFO] [stderr] --> src/bin/closures/main.rs:9:4 [INFO] [stderr] | [INFO] [stderr] 9 | fn simulated_expensive_calculation(intensity: u32) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `inner_func` [INFO] [stderr] --> src/bin/closures/main.rs:31:4 [INFO] [stderr] | [INFO] [stderr] 31 | fn inner_func(){ [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `meta` [INFO] [stderr] --> src/bin/errors/errors.rs:31:15 [INFO] [stderr] | [INFO] [stderr] 31 | if let Ok(meta) = f.metadata() { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_meta` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/errors/errors.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | read_username_from_file_v2(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/errors/errors.rs:13:5 [INFO] [stderr] | [INFO] [stderr] 13 | read_username_from_file_v3(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/errors/errors.rs:32:9 [INFO] [stderr] | [INFO] [stderr] 32 | fs::remove_file("hello.txt"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `DA` [INFO] [stderr] --> src/bin/enums/main.rs:28:8 [INFO] [stderr] | [INFO] [stderr] 28 | struct DA { [INFO] [stderr] | ^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v` [INFO] [stderr] --> src/bin/collections/main.rs:12:9 [INFO] [stderr] | [INFO] [stderr] 12 | let v: Vec = Vec::new(); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: value assigned to `s2` is never read [INFO] [stderr] --> src/bin/collections/main.rs:71:5 [INFO] [stderr] | [INFO] [stderr] 71 | s2 = String::from("xxx"); [INFO] [stderr] | ^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/collections/main.rs:21:9 [INFO] [stderr] | [INFO] [stderr] 21 | let mut v = vec![1, 2, 3, 4, 5]; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/collections/main.rs:82:9 [INFO] [stderr] | [INFO] [stderr] 82 | let mut sss = SSS { [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `accessing` [INFO] [stderr] --> src/bin/collections/main.rs:11:4 [INFO] [stderr] | [INFO] [stderr] 11 | fn accessing() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `no_mutable_and_imutable_in_same_scope` [INFO] [stderr] --> src/bin/collections/main.rs:20:4 [INFO] [stderr] | [INFO] [stderr] 20 | fn no_mutable_and_imutable_in_same_scope() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `edit_in_place` [INFO] [stderr] --> src/bin/collections/main.rs:27:4 [INFO] [stderr] | [INFO] [stderr] 27 | fn edit_in_place() { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `enum_vec` [INFO] [stderr] --> src/bin/collections/main.rs:35:4 [INFO] [stderr] | [INFO] [stderr] 35 | fn enum_vec() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `stringss` [INFO] [stderr] --> src/bin/collections/main.rs:60:4 [INFO] [stderr] | [INFO] [stderr] 60 | fn stringss() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `vec_of_stracts` [INFO] [stderr] --> src/bin/collections/main.rs:75:4 [INFO] [stderr] | [INFO] [stderr] 75 | fn vec_of_stracts() { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `update_entry_in_a_map` [INFO] [stderr] --> src/bin/collections/main.rs:97:4 [INFO] [stderr] | [INFO] [stderr] 97 | fn update_entry_in_a_map() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: structure field `Id` should have a snake case name [INFO] [stderr] --> src/bin/collections/main.rs:78:9 [INFO] [stderr] | [INFO] [stderr] 78 | Id: String, [INFO] [stderr] | ^^ help: convert the identifier to snake case (notice the capitalization): `id` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 12 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `can_hold` [INFO] [stderr] --> src/bin/tests/main.rs:14:8 [INFO] [stderr] | [INFO] [stderr] 14 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `resp` [INFO] [stderr] --> src/bin/http_async/main.rs:15:9 [INFO] [stderr] | [INFO] [stderr] 15 | let resp = reqwest::get("https://httpbin.org/ip") [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_resp` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `read_username_from_file` [INFO] [stderr] --> src/bin/http_async/main.rs:24:4 [INFO] [stderr] | [INFO] [stderr] 24 | fn read_username_from_file() -> Result { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `word_count` [INFO] [stderr] --> src/bin/hash/main.rs:62:9 [INFO] [stderr] | [INFO] [stderr] 62 | let word_count : HashMap<_,_> = v.iter() [INFO] [stderr] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_word_count` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `zzip` [INFO] [stderr] --> src/bin/hash/main.rs:60:4 [INFO] [stderr] | [INFO] [stderr] 60 | fn zzip(v : &Vec){ [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::env` [INFO] [stderr] --> src/bin/minigrep/main.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::env; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/bin/closures/main.rs:32:9 [INFO] [stderr] | [INFO] [stderr] 32 | let x = 4; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `shoes_in_my_size` [INFO] [stderr] --> src/bin/closures/iterators.rs:61:4 [INFO] [stderr] | [INFO] [stderr] 61 | fn shoes_in_my_size(shoes: Vec, shoe_size: u32) -> Vec { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `new` [INFO] [stderr] --> src/bin/closures/iterators.rs:92:8 [INFO] [stderr] | [INFO] [stderr] 92 | fn new() -> Counter { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `simulated_expensive_calculation` [INFO] [stderr] --> src/bin/closures/main.rs:9:4 [INFO] [stderr] | [INFO] [stderr] 9 | fn simulated_expensive_calculation(intensity: u32) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `inner_func` [INFO] [stderr] --> src/bin/closures/main.rs:31:4 [INFO] [stderr] | [INFO] [stderr] 31 | fn inner_func(){ [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 5 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/bin/generics/traits.rs:71:56 [INFO] [stderr] | [INFO] [stderr] 71 | fn some_function(t: T, u: U) -> i32 {3} [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `u` [INFO] [stderr] --> src/bin/generics/traits.rs:71:62 [INFO] [stderr] | [INFO] [stderr] 71 | fn some_function(t: T, u: U) -> i32 {3} [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/bin/generics/traits.rs:72:35 [INFO] [stderr] | [INFO] [stderr] 72 | fn some_function_with_where(t: T, u: U) -> i32 [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `u` [INFO] [stderr] --> src/bin/generics/traits.rs:72:41 [INFO] [stderr] | [INFO] [stderr] 72 | fn some_function_with_where(t: T, u: U) -> i32 [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `notifyBound` [INFO] [stderr] --> src/bin/generics/traits.rs:59:8 [INFO] [stderr] | [INFO] [stderr] 59 | pub fn notifyBound(item: T) { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `notifyPlusSyntax` [INFO] [stderr] --> src/bin/generics/traits.rs:63:8 [INFO] [stderr] | [INFO] [stderr] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `notifyWow` [INFO] [stderr] --> src/bin/generics/traits.rs:67:8 [INFO] [stderr] | [INFO] [stderr] 67 | pub fn notifyWow(item: T) { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `some_function` [INFO] [stderr] --> src/bin/generics/traits.rs:71:4 [INFO] [stderr] | [INFO] [stderr] 71 | fn some_function(t: T, u: U) -> i32 {3} [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `some_function_with_where` [INFO] [stderr] --> src/bin/generics/traits.rs:72:4 [INFO] [stderr] | [INFO] [stderr] 72 | fn some_function_with_where(t: T, u: U) -> i32 [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `returns_summarizable` [INFO] [stderr] --> src/bin/generics/traits.rs:78:4 [INFO] [stderr] | [INFO] [stderr] 78 | fn returns_summarizable() -> impl Summary { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `largest_copy` [INFO] [stderr] --> src/bin/generics/traits.rs:88:4 [INFO] [stderr] | [INFO] [stderr] 88 | fn largest_copy(list: &[T]) -> T { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `largest_clone` [INFO] [stderr] --> src/bin/generics/traits.rs:100:4 [INFO] [stderr] | [INFO] [stderr] 100 | fn largest_clone(list: &[T]) -> T [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `largest_ref` [INFO] [stderr] --> src/bin/generics/traits.rs:113:4 [INFO] [stderr] | [INFO] [stderr] 113 | fn largest_ref(list: &[T]) -> &T { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Pair` [INFO] [stderr] --> src/bin/generics/traits.rs:123:8 [INFO] [stderr] | [INFO] [stderr] 123 | struct Pair{ [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `cmp_display` [INFO] [stderr] --> src/bin/generics/traits.rs:129:8 [INFO] [stderr] | [INFO] [stderr] 129 | fn cmp_display(&self) { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `is_this_an_extension_function` [INFO] [stderr] --> src/bin/generics/traits.rs:154:4 [INFO] [stderr] | [INFO] [stderr] 154 | fn is_this_an_extension_function(){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `longest_with_an_announcement` [INFO] [stderr] --> src/bin/generics/lifetimes.rs:22:4 [INFO] [stderr] | [INFO] [stderr] 22 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `take_ownership` [INFO] [stderr] --> src/bin/generics/main.rs:26:4 [INFO] [stderr] | [INFO] [stderr] 26 | fn take_ownership(t: Tweet){ [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `notifyBound` should have a snake case name [INFO] [stderr] --> src/bin/generics/traits.rs:59:8 [INFO] [stderr] | [INFO] [stderr] 59 | pub fn notifyBound(item: T) { [INFO] [stderr] | ^^^^^^^^^^^ help: convert the identifier to snake case: `notify_bound` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function `notifyPlusSyntax` should have a snake case name [INFO] [stderr] --> src/bin/generics/traits.rs:63:8 [INFO] [stderr] | [INFO] [stderr] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `notify_plus_syntax` [INFO] [stderr] [INFO] [stderr] warning: function `notifyWow` should have a snake case name [INFO] [stderr] --> src/bin/generics/traits.rs:67:8 [INFO] [stderr] | [INFO] [stderr] 67 | pub fn notifyWow(item: T) { [INFO] [stderr] | ^^^^^^^^^ help: convert the identifier to snake case: `notify_wow` [INFO] [stderr] [INFO] [stderr] warning: 21 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `meta` [INFO] [stderr] --> src/bin/errors/errors.rs:31:15 [INFO] [stderr] | [INFO] [stderr] 31 | if let Ok(meta) = f.metadata() { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_meta` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/errors/errors.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | read_username_from_file_v2(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/errors/errors.rs:13:5 [INFO] [stderr] | [INFO] [stderr] 13 | read_username_from_file_v3(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/errors/errors.rs:32:9 [INFO] [stderr] | [INFO] [stderr] 32 | fs::remove_file("hello.txt"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `era` [INFO] [stderr] --> src/bin/guessing_game/rect.rs:8:12 [INFO] [stderr] | [INFO] [stderr] 8 | pub fn era(&self) -> u32 { [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `print_x` [INFO] [stderr] --> src/bin/guessing_game/rect.rs:12:12 [INFO] [stderr] | [INFO] [stderr] 12 | pub fn print_x(&self , format: &str) { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `word_count` [INFO] [stderr] --> src/bin/hash/main.rs:62:9 [INFO] [stderr] | [INFO] [stderr] 62 | let word_count : HashMap<_,_> = v.iter() [INFO] [stderr] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_word_count` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `zzip` [INFO] [stderr] --> src/bin/hash/main.rs:60:4 [INFO] [stderr] | [INFO] [stderr] 60 | fn zzip(v : &Vec){ [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/bin/generics/traits.rs:71:56 [INFO] [stderr] | [INFO] [stderr] 71 | fn some_function(t: T, u: U) -> i32 {3} [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `u` [INFO] [stderr] --> src/bin/generics/traits.rs:71:62 [INFO] [stderr] | [INFO] [stderr] 71 | fn some_function(t: T, u: U) -> i32 {3} [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/bin/generics/traits.rs:72:35 [INFO] [stderr] | [INFO] [stderr] 72 | fn some_function_with_where(t: T, u: U) -> i32 [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `u` [INFO] [stderr] --> src/bin/generics/traits.rs:72:41 [INFO] [stderr] | [INFO] [stderr] 72 | fn some_function_with_where(t: T, u: U) -> i32 [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `notifyBound` [INFO] [stderr] --> src/bin/generics/traits.rs:59:8 [INFO] [stderr] | [INFO] [stderr] 59 | pub fn notifyBound(item: T) { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `notifyPlusSyntax` [INFO] [stderr] --> src/bin/generics/traits.rs:63:8 [INFO] [stderr] | [INFO] [stderr] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `notifyWow` [INFO] [stderr] --> src/bin/generics/traits.rs:67:8 [INFO] [stderr] | [INFO] [stderr] 67 | pub fn notifyWow(item: T) { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `some_function` [INFO] [stderr] --> src/bin/generics/traits.rs:71:4 [INFO] [stderr] | [INFO] [stderr] 71 | fn some_function(t: T, u: U) -> i32 {3} [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `some_function_with_where` [INFO] [stderr] --> src/bin/generics/traits.rs:72:4 [INFO] [stderr] | [INFO] [stderr] 72 | fn some_function_with_where(t: T, u: U) -> i32 [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `returns_summarizable` [INFO] [stderr] --> src/bin/generics/traits.rs:78:4 [INFO] [stderr] | [INFO] [stderr] 78 | fn returns_summarizable() -> impl Summary { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `largest_copy` [INFO] [stderr] --> src/bin/generics/traits.rs:88:4 [INFO] [stderr] | [INFO] [stderr] 88 | fn largest_copy(list: &[T]) -> T { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `largest_clone` [INFO] [stderr] --> src/bin/generics/traits.rs:100:4 [INFO] [stderr] | [INFO] [stderr] 100 | fn largest_clone(list: &[T]) -> T [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `largest_ref` [INFO] [stderr] --> src/bin/generics/traits.rs:113:4 [INFO] [stderr] | [INFO] [stderr] 113 | fn largest_ref(list: &[T]) -> &T { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Pair` [INFO] [stderr] --> src/bin/generics/traits.rs:123:8 [INFO] [stderr] | [INFO] [stderr] 123 | struct Pair{ [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `cmp_display` [INFO] [stderr] --> src/bin/generics/traits.rs:129:8 [INFO] [stderr] | [INFO] [stderr] 129 | fn cmp_display(&self) { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `is_this_an_extension_function` [INFO] [stderr] --> src/bin/generics/traits.rs:154:4 [INFO] [stderr] | [INFO] [stderr] 154 | fn is_this_an_extension_function(){ [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `longest_with_an_announcement` [INFO] [stderr] --> src/bin/generics/lifetimes.rs:22:4 [INFO] [stderr] | [INFO] [stderr] 22 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `take_ownership` [INFO] [stderr] --> src/bin/generics/main.rs:26:4 [INFO] [stderr] | [INFO] [stderr] 26 | fn take_ownership(t: Tweet){ [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `notifyBound` should have a snake case name [INFO] [stderr] --> src/bin/generics/traits.rs:59:8 [INFO] [stderr] | [INFO] [stderr] 59 | pub fn notifyBound(item: T) { [INFO] [stderr] | ^^^^^^^^^^^ help: convert the identifier to snake case: `notify_bound` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function `notifyPlusSyntax` should have a snake case name [INFO] [stderr] --> src/bin/generics/traits.rs:63:8 [INFO] [stderr] | [INFO] [stderr] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `notify_plus_syntax` [INFO] [stderr] [INFO] [stderr] warning: function `notifyWow` should have a snake case name [INFO] [stderr] --> src/bin/generics/traits.rs:67:8 [INFO] [stderr] | [INFO] [stderr] 67 | pub fn notifyWow(item: T) { [INFO] [stderr] | ^^^^^^^^^ help: convert the identifier to snake case: `notify_wow` [INFO] [stderr] [INFO] [stderr] warning: 21 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `era` [INFO] [stderr] --> src/bin/guessing_game/rect.rs:8:12 [INFO] [stderr] | [INFO] [stderr] 8 | pub fn era(&self) -> u32 { [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `print_x` [INFO] [stderr] --> src/bin/guessing_game/rect.rs:12:12 [INFO] [stderr] | [INFO] [stderr] 12 | pub fn print_x(&self , format: &str) { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.08s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/mygrep-a0efc9de793b4f9d [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test add_two::tests::test_add ... ok [INFO] [stdout] test search::tests::case_sensitive ... ok [INFO] [stdout] test search::tests::case_insensitive ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- search::tests::case_insensitive stdout ---- [INFO] [stdout] thread 'search::tests::case_insensitive' panicked at 'assertion failed: `(left == right)` [INFO] [stdout] left: `["Rust:", "Trust me."]`, [INFO] [stdout] right: `[]`', src/lib/search.rs:40:9 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55c8b254d2b0 - std::backtrace_rs::backtrace::libunwind::trace::h04d12fdcddff82aa [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/../../backtrace/src/backtrace/libunwind.rs:100:5 [INFO] [stdout] 1: 0x55c8b254d2b0 - std::backtrace_rs::backtrace::trace_unsynchronized::h1459b974b6fbe5e1 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55c8b254d2b0 - std::sys_common::backtrace::_print_fmt::h9b8396a669123d95 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stdout] 3: 0x55c8b254d2b0 - ::fmt::he009dcaaa75eed60 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stdout] 4: 0x55c8b257094c - core::fmt::write::h77b4746b0dea1dd3 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/core/src/fmt/mod.rs:1078:17 [INFO] [stdout] 5: 0x55c8b24f7076 - std::io::Write::write_fmt::h3a40d9c04f88bb58 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/io/mod.rs:1518:15 [INFO] [stdout] 6: 0x55c8b25475ad - std::io::impls::>::write_fmt::h1b3d263673641f53 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/io/impls.rs:179:9 [INFO] [stdout] 7: 0x55c8b254f985 - std::sys_common::backtrace::_print::h2d880c9e69a21be9 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stdout] 8: 0x55c8b254f985 - std::sys_common::backtrace::print::h5f02b1bb49f36879 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stdout] 9: 0x55c8b254f985 - std::panicking::default_hook::{{closure}}::h658e288a7a809b29 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/panicking.rs:208:50 [INFO] [stdout] 10: 0x55c8b254f5d2 - std::panicking::default_hook::hb52d73f0da9a4bb8 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/panicking.rs:224:9 [INFO] [stdout] 11: 0x55c8b2550121 - std::panicking::rust_panic_with_hook::hfe7e1c684e3e6462 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/panicking.rs:593:17 [INFO] [stdout] 12: 0x55c8b254fc67 - std::panicking::begin_panic_handler::{{closure}}::h42939e004b32765c [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/panicking.rs:499:13 [INFO] [stdout] 13: 0x55c8b254d76c - std::sys_common::backtrace::__rust_end_short_backtrace::h9d2070f7bf9fd56c [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/sys_common/backtrace.rs:141:18 [INFO] [stdout] 14: 0x55c8b254fbc9 - rust_begin_unwind [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/panicking.rs:495:5 [INFO] [stdout] 15: 0x55c8b254fb7b - std::panicking::begin_panic_fmt::h4a7e15187eac098d [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/panicking.rs:437:5 [INFO] [stdout] 16: 0x55c8b24f316e - mygrep::search::tests::case_insensitive::h8e99150d036dd1d4 [INFO] [stdout] at /opt/rustwide/workdir/src/lib/search.rs:40:9 [INFO] [stdout] 17: 0x55c8b24f2f1a - mygrep::search::tests::case_insensitive::{{closure}}::hb3d8ac94fc223e26 [INFO] [stdout] at /opt/rustwide/workdir/src/lib/search.rs:32:5 [INFO] [stdout] 18: 0x55c8b24ed5ee - core::ops::function::FnOnce::call_once::hbc3a14aaef7740d7 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 19: 0x55c8b251ebc3 - core::ops::function::FnOnce::call_once::hdbd2235b6243db3d [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 20: 0x55c8b251ebc3 - test::__rust_begin_short_backtrace::hb1dea1c208110812 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/test/src/lib.rs:517:5 [INFO] [stdout] 21: 0x55c8b251d06a - as core::ops::function::FnOnce>::call_once::h5d11a40efef721f2 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/alloc/src/boxed.rs:1307:9 [INFO] [stdout] 22: 0x55c8b251d06a - as core::ops::function::FnOnce<()>>::call_once::h23961df98af0bc5a [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/panic.rs:322:9 [INFO] [stdout] 23: 0x55c8b251d06a - std::panicking::try::do_call::h6390646e3de3fb9e [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/panicking.rs:381:40 [INFO] [stdout] 24: 0x55c8b251d06a - std::panicking::try::hc531439ab6159192 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/panicking.rs:345:19 [INFO] [stdout] 25: 0x55c8b251d06a - std::panic::catch_unwind::h859d8bdaf9b4855c [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/panic.rs:396:14 [INFO] [stdout] 26: 0x55c8b251d06a - test::run_test_in_process::hae60aa74417e3abc [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/test/src/lib.rs:544:18 [INFO] [stdout] 27: 0x55c8b251d06a - test::run_test::run_test_inner::{{closure}}::hf48c86652c4a151d [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/test/src/lib.rs:450:39 [INFO] [stdout] 28: 0x55c8b24f63f6 - std::sys_common::backtrace::__rust_begin_short_backtrace::hb82b392232b8bd1f [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/sys_common/backtrace.rs:125:18 [INFO] [stdout] 29: 0x55c8b24fb3f3 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h79ca9e9abe157956 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/thread/mod.rs:474:17 [INFO] [stdout] 30: 0x55c8b24fb3f3 - as core::ops::function::FnOnce<()>>::call_once::ha12f1f228780a4f7 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/panic.rs:322:9 [INFO] [stdout] 31: 0x55c8b24fb3f3 - std::panicking::try::do_call::h722bb7416d021cdc [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/panicking.rs:381:40 [INFO] [stdout] 32: 0x55c8b24fb3f3 - std::panicking::try::h78e5abca71ac7cac [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/panicking.rs:345:19 [INFO] [stdout] 33: 0x55c8b24fb3f3 - std::panic::catch_unwind::h95162588bd0fa090 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/panic.rs:396:14 [INFO] [stdout] 34: 0x55c8b24fb3f3 - std::thread::Builder::spawn_unchecked::{{closure}}::h64da5c4b9acc58dc [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/thread/mod.rs:473:30 [INFO] [stdout] 35: 0x55c8b24fb3f3 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h7a8c588ad0b69edb [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 36: 0x55c8b255654a - as core::ops::function::FnOnce>::call_once::h09ff301006f1aeca [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/alloc/src/boxed.rs:1307:9 [INFO] [stdout] 37: 0x55c8b255654a - as core::ops::function::FnOnce>::call_once::he79488c8f00b5f31 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/alloc/src/boxed.rs:1307:9 [INFO] [stdout] 38: 0x55c8b255654a - std::sys::unix::thread::Thread::new::thread_start::h587efff279c68ba7 [INFO] [stdout] at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/sys/unix/thread.rs:71:17 [INFO] [stdout] 39: 0x7f5cdd20b609 - start_thread [INFO] [stdout] 40: 0x7f5cdcfdd293 - clone [INFO] [stdout] 41: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] search::tests::case_insensitive [INFO] [stdout] [INFO] [stdout] test result: FAILED. 2 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--lib' [INFO] running `Command { std: "docker" "inspect" "a15c059cae7e50051ed3d1f7f5ab4e28b6155c5f6232a38dc980e65ffad14c74", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a15c059cae7e50051ed3d1f7f5ab4e28b6155c5f6232a38dc980e65ffad14c74", kill_on_drop: false }` [INFO] [stdout] a15c059cae7e50051ed3d1f7f5ab4e28b6155c5f6232a38dc980e65ffad14c74