[INFO] fetching crate study-rust-example 0.1.0... [INFO] testing study-rust-example-0.1.0 against 1.91.0 for beta-1.92-2 [INFO] extracting crate study-rust-example 0.1.0 into /workspace/builds/worker-6-tc1/source [INFO] started tweaking crates.io crate study-rust-example 0.1.0 [INFO] finished tweaking crates.io crate study-rust-example 0.1.0 [INFO] tweaked toml for crates.io crate study-rust-example 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate study-rust-example 0.1.0 on toolchain 1.91.0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate study-rust-example 0.1.0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded zeroize v1.6.0 [INFO] [stderr] Downloaded home v0.5.5 [INFO] [stderr] Downloaded prettyplease v0.2.14 [INFO] [stderr] Downloaded blst v0.3.11 [INFO] [stderr] Downloaded c-kzg v0.1.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e12ee55c6175fcf0e4df74dcbcd4a6315bd46e3d8efb4a5b5c32bd5e809092b3 [INFO] running `Command { std: "docker" "start" "-a" "e12ee55c6175fcf0e4df74dcbcd4a6315bd46e3d8efb4a5b5c32bd5e809092b3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e12ee55c6175fcf0e4df74dcbcd4a6315bd46e3d8efb4a5b5c32bd5e809092b3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e12ee55c6175fcf0e4df74dcbcd4a6315bd46e3d8efb4a5b5c32bd5e809092b3", kill_on_drop: false }` [INFO] [stdout] e12ee55c6175fcf0e4df74dcbcd4a6315bd46e3d8efb4a5b5c32bd5e809092b3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d5c0e903e6f56dbfb1b7e6725e0a99da765cc212e49f7893e4a5bd8e37771419 [INFO] running `Command { std: "docker" "start" "-a" "d5c0e903e6f56dbfb1b7e6725e0a99da765cc212e49f7893e4a5bd8e37771419", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.147 [INFO] [stderr] Compiling glob v0.3.1 [INFO] [stderr] Compiling rustix v0.38.11 [INFO] [stderr] Compiling prettyplease v0.2.14 [INFO] [stderr] Compiling regex-syntax v0.7.5 [INFO] [stderr] Compiling linux-raw-sys v0.4.5 [INFO] [stderr] Compiling memchr v2.6.3 [INFO] [stderr] Compiling bitflags v2.4.0 [INFO] [stderr] Compiling either v1.9.0 [INFO] [stderr] Compiling home v0.5.5 [INFO] [stderr] Compiling bindgen v0.66.1 [INFO] [stderr] Compiling libloading v0.7.4 [INFO] [stderr] Compiling log v0.4.20 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling syn v2.0.31 [INFO] [stderr] Compiling shlex v1.2.0 [INFO] [stderr] Compiling getrandom v0.2.10 [INFO] [stderr] Compiling serde v1.0.188 [INFO] [stderr] Compiling threadpool v1.8.1 [INFO] [stderr] Compiling rand_core v0.6.4 [INFO] [stderr] Compiling clang-sys v1.6.1 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling nom v7.1.3 [INFO] [stderr] Compiling rand v0.8.5 [INFO] [stderr] Compiling cc v1.0.83 [INFO] [stderr] Compiling regex-automata v0.3.8 [INFO] [stderr] Compiling blst v0.3.11 [INFO] [stderr] Compiling which v4.4.2 [INFO] [stderr] Compiling cexpr v0.6.0 [INFO] [stderr] Compiling regex v1.9.5 [INFO] [stderr] Compiling zeroize_derive v1.4.2 [INFO] [stderr] Compiling serde_derive v1.0.188 [INFO] [stderr] Compiling zeroize v1.6.0 [INFO] [stderr] Compiling c-kzg v0.1.0 [INFO] [stderr] Compiling study-rust-example v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression [INFO] [stdout] --> src/basic_concept/basic_concept.rs:154:20 [INFO] [stdout] | [INFO] [stdout] 154 | for num in (0..a1.len()) { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 154 - for num in (0..a1.len()) { [INFO] [stdout] 154 + for num in 0..a1.len() { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `hash_map` [INFO] [stdout] --> src/common_collection/hash_map_study.rs:1:24 [INFO] [stdout] | [INFO] [stdout] 1 | use std::collections::{hash_map, HashMap}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Write` and `self` [INFO] [stdout] --> src/package_crate_module/package_crate_module.rs:2:15 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{self, Write}; [INFO] [stdout] | ^^^^ ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::*` [INFO] [stdout] --> src/package_crate_module/package_crate_module.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::collections::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `max64_int` [INFO] [stdout] --> src/basic_concept/basic_concept.rs:26:13 [INFO] [stdout] | [INFO] [stdout] 26 | let max64_int = 2 ^ 64 - 1; [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max64_int` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `x` is never read [INFO] [stdout] --> src/basic_concept/basic_concept.rs:59:17 [INFO] [stdout] | [INFO] [stdout] 59 | let mut x: u16 = 10000; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `vec1` is never read [INFO] [stdout] --> src/common_collection/vector_study.rs:72:13 [INFO] [stdout] | [INFO] [stdout] 72 | let mut vec1: Vec = Vec::new(); [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `values` [INFO] [stdout] --> src/common_collection/vector_study.rs:74:9 [INFO] [stdout] | [INFO] [stdout] 74 | let values: [i32; 3] = [12, 23, 43]; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_number` [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:78:13 [INFO] [stdout] | [INFO] [stdout] 78 | let some_number = Some(5); [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_number` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_char` [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:79:13 [INFO] [stdout] | [INFO] [stdout] 79 | let some_char = Some('S'); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_char` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `number` [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:82:13 [INFO] [stdout] | [INFO] [stdout] 82 | let number: i32 = 32; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str` [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:119:23 [INFO] [stdout] | [INFO] [stdout] 119 | Coin::ETH(str) => 100_0000_0000_0000_0000, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str` [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:120:24 [INFO] [stdout] | [INFO] [stdout] 120 | Coin::USDT(str) => 100_0000, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num1` [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:61:9 [INFO] [stdout] | [INFO] [stdout] 61 | let num1: &i32; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_num1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num2` [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | let num2: &'a i32; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_num2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num3` [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:63:9 [INFO] [stdout] | [INFO] [stdout] 63 | let num3: &'a mut i32; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_num3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:74:9 [INFO] [stdout] | [INFO] [stdout] 74 | let s: &'static str = "test 'static"; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/iterator_closure/closure_study.rs:66:9 [INFO] [stdout] | [INFO] [stdout] 66 | let s = example_closures(String::from("closures.")); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership/ownership.rs:33:13 [INFO] [stdout] | [INFO] [stdout] 33 | let mut s1 = String::from("hello"); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership/ownership.rs:55:17 [INFO] [stdout] | [INFO] [stdout] 55 | let mut s4 = s3; [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership/ownership.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | let mut str = String::from("move_function_study hello"); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership/ownership.rs:73:13 [INFO] [stdout] | [INFO] [stdout] 73 | let mut int1 = 188; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str_ref` [INFO] [stdout] --> src/ownership/ownership.rs:121:19 [INFO] [stdout] | [INFO] [stdout] 121 | fn modify_str(str_ref: &String) { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_str_ref` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `string_literal` [INFO] [stdout] --> src/ownership/ownership.rs:223:13 [INFO] [stdout] | [INFO] [stdout] 223 | let string_literal = "hello string literal"; [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_string_literal` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership/ownership.rs:233:13 [INFO] [stdout] | [INFO] [stdout] 233 | let mut source_str = String::from("slice hello"); [INFO] [stdout] | ----^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `color` [INFO] [stdout] --> src/struct_related/define_init_struct.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | let color = Color(32, 34, 43); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_color` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `point` [INFO] [stdout] --> src/struct_related/define_init_struct.rs:45:9 [INFO] [stdout] | [INFO] [stdout] 45 | let point = Point(23, -23); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_point` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `decimal` is never read [INFO] [stdout] --> src/common_collection/hash_map_study.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 10 | struct CoinProerty { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] 11 | decimal: u32, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `CoinProerty` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/common_collection/vector_study.rs:55:9 [INFO] [stdout] | [INFO] [stdout] 55 | Int(i32), [INFO] [stdout] | --- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 55 - Int(i32), [INFO] [stdout] 55 + Int(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/common_collection/vector_study.rs:56:11 [INFO] [stdout] | [INFO] [stdout] 56 | Float(f64), [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 56 - Float(f64), [INFO] [stdout] 56 + Float(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/common_collection/vector_study.rs:57:10 [INFO] [stdout] | [INFO] [stdout] 57 | Text(String), [INFO] [stdout] | ---- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 57 - Text(String), [INFO] [stdout] 57 + Text(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `V6` is never constructed [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 3 | enum IpAddrType { [INFO] [stdout] | ---------- variant in this enum [INFO] [stdout] 4 | V4, [INFO] [stdout] 5 | V6, [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `IpAddrType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `ip_addr_type` and `address` are never read [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 9 | struct IpAddr { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 10 | ip_addr_type: IpAddrType, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] 11 | address: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `IpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:16:12 [INFO] [stdout] | [INFO] [stdout] 16 | V4(String), [INFO] [stdout] | -- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `IpAddrEnum` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 16 - V4(String), [INFO] [stdout] 16 + V4(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `V6` is never constructed [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 15 | enum IpAddrEnum { [INFO] [stdout] | ---------- variant in this enum [INFO] [stdout] 16 | V4(String), [INFO] [stdout] 17 | V6(String), [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `IpAddrEnum` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Message` is never used [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:21:10 [INFO] [stdout] | [INFO] [stdout] 21 | enum Message { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:49:15 [INFO] [stdout] | [INFO] [stdout] 49 | Write(String), // 包括一个单个的字符串 [INFO] [stdout] | ----- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Msg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 49 - Write(String), // 包括一个单个的字符串 [INFO] [stdout] 49 + Write(()), // 包括一个单个的字符串 [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Quit`, `Move`, and `ChangeColor` are never constructed [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 46 | enum Msg { [INFO] [stdout] | --- variants in this enum [INFO] [stdout] 47 | Quit, // 没有数据关联 [INFO] [stdout] | ^^^^ [INFO] [stdout] 48 | Move { x: i32, y: i32 }, // 像struct做的，有命名的字段 [INFO] [stdout] | ^^^^ [INFO] [stdout] 49 | Write(String), // 包括一个单个的字符串 [INFO] [stdout] 50 | ChangeColor(i32, i64, String), // 包括几个类型的数据 [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Msg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `ETH` and `USDT` are never constructed [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:110:9 [INFO] [stdout] | [INFO] [stdout] 108 | enum Coin { [INFO] [stdout] | ---- variants in this enum [INFO] [stdout] 109 | BTC(String), [INFO] [stdout] 110 | ETH(String), [INFO] [stdout] | ^^^ [INFO] [stdout] 111 | USDT(String), [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Coin` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `call_panic_self` is never used [INFO] [stdout] --> src/error_handle/panic_unrecoverable.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn call_panic_self() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `cause_lib_panic` is never used [INFO] [stdout] --> src/error_handle/panic_unrecoverable.rs:7:4 [INFO] [stdout] | [INFO] [stdout] 7 | fn cause_lib_panic() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Score` is never constructed [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:33:8 [INFO] [stdout] | [INFO] [stdout] 33 | struct Score<'a> { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get_score` is never used [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:40:8 [INFO] [stdout] | [INFO] [stdout] 38 | impl<'a> Score<'a> { [INFO] [stdout] | ------------------ method in this implementation [INFO] [stdout] 39 | // [规则3]：因为参数之一是 &self ，所以返回类型获取 &self 的生命周期 [INFO] [stdout] 40 | fn get_score(&self) -> &i32 { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `first_world` is never used [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:46:4 [INFO] [stdout] | [INFO] [stdout] 46 | fn first_world(str: &str) -> &str { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Pair` is never constructed [INFO] [stdout] --> src/generic_traits_lifetime/traits_study.rs:3:8 [INFO] [stdout] | [INFO] [stdout] 3 | struct Pair { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/generic_traits_lifetime/traits_study.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 7 | impl Pair { [INFO] [stdout] | --------------- associated function in this implementation [INFO] [stdout] 8 | fn new(x: T, y: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `cmp_display` is never used [INFO] [stdout] --> src/generic_traits_lifetime/traits_study.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 12 | impl Pair { [INFO] [stdout] | ------------------------------------- method in this implementation [INFO] [stdout] 13 | fn cmp_display(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Tweet` is never constructed [INFO] [stdout] --> src/generic_traits_lifetime/traits_study.rs:25:8 [INFO] [stdout] | [INFO] [stdout] 25 | struct Tweet { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `example_closures_study` is never used [INFO] [stdout] --> src/iterator_closure/closure_study.rs:64:4 [INFO] [stdout] | [INFO] [stdout] 64 | fn example_closures_study() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `height` is never read [INFO] [stdout] --> src/iterator_closure/closure_study.rs:116:5 [INFO] [stdout] | [INFO] [stdout] 114 | struct Rectangle { [INFO] [stdout] | --------- field in this struct [INFO] [stdout] 115 | width: u32, [INFO] [stdout] 116 | height: u32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Shoe` is never constructed [INFO] [stdout] --> src/iterator_closure/iterator_process_study.rs:48:8 [INFO] [stdout] | [INFO] [stdout] 48 | struct Shoe { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `shoe_in_size` is never used [INFO] [stdout] --> src/iterator_closure/iterator_process_study.rs:53:4 [INFO] [stdout] | [INFO] [stdout] 53 | fn shoe_in_size(shoes: Vec, shoe_size: u32) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `modify_str` is never used [INFO] [stdout] --> src/ownership/ownership.rs:121:8 [INFO] [stdout] | [INFO] [stdout] 121 | fn modify_str(str_ref: &String) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `user_id`, `age`, and `active` are never read [INFO] [stdout] --> src/struct_related/define_init_struct.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct User { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 3 | user_id: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 4 | user_name: String, [INFO] [stdout] 5 | age: u8, [INFO] [stdout] | ^^^ [INFO] [stdout] 6 | active: bool, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/struct_related/define_init_struct.rs:25:14 [INFO] [stdout] | [INFO] [stdout] 25 | struct Color(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> src/struct_related/define_init_struct.rs:26:14 [INFO] [stdout] | [INFO] [stdout] 26 | struct Point(i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `coinMap` should have a snake case name [INFO] [stdout] --> src/common_collection/hash_map_study.rs:33:13 [INFO] [stdout] | [INFO] [stdout] 33 | let mut coinMap: HashMap = HashMap::new(); [INFO] [stdout] | ^^^^^^^ help: convert the identifier to snake case: `coin_map` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `socket` [INFO] [stdout] --> src/bin/socket_server.rs:11:13 [INFO] [stdout] | [INFO] [stdout] 11 | Ok((socket, addr)) => println!("Got a client: {addr:?}"), [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_socket` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `guess_game` is never used [INFO] [stdout] --> src/main.rs:7:4 [INFO] [stdout] | [INFO] [stdout] 7 | fn guess_game() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.22s [INFO] running `Command { std: "docker" "inspect" "d5c0e903e6f56dbfb1b7e6725e0a99da765cc212e49f7893e4a5bd8e37771419", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d5c0e903e6f56dbfb1b7e6725e0a99da765cc212e49f7893e4a5bd8e37771419", kill_on_drop: false }` [INFO] [stdout] d5c0e903e6f56dbfb1b7e6725e0a99da765cc212e49f7893e4a5bd8e37771419 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 04bad82a1788130ad510ea54c7ba23010c07f0babe5f04fca6393faa55d4de05 [INFO] running `Command { std: "docker" "start" "-a" "04bad82a1788130ad510ea54c7ba23010c07f0babe5f04fca6393faa55d4de05", kill_on_drop: false }` [INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression [INFO] [stdout] --> src/basic_concept/basic_concept.rs:154:20 [INFO] [stdout] | [INFO] [stdout] 154 | for num in (0..a1.len()) { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 154 - for num in (0..a1.len()) { [INFO] [stdout] 154 + for num in 0..a1.len() { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `hash_map` [INFO] [stdout] --> src/common_collection/hash_map_study.rs:1:24 [INFO] [stdout] | [INFO] [stdout] 1 | use std::collections::{hash_map, HashMap}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Write` and `self` [INFO] [stdout] --> src/package_crate_module/package_crate_module.rs:2:15 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{self, Write}; [INFO] [stdout] | ^^^^ ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::*` [INFO] [stdout] --> src/package_crate_module/package_crate_module.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::collections::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `max64_int` [INFO] [stdout] --> src/basic_concept/basic_concept.rs:26:13 [INFO] [stdout] | [INFO] [stdout] 26 | let max64_int = 2 ^ 64 - 1; [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max64_int` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `x` is never read [INFO] [stdout] --> src/basic_concept/basic_concept.rs:59:17 [INFO] [stdout] | [INFO] [stdout] 59 | let mut x: u16 = 10000; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `vec1` is never read [INFO] [stdout] --> src/common_collection/vector_study.rs:72:13 [INFO] [stdout] | [INFO] [stdout] 72 | let mut vec1: Vec = Vec::new(); [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `values` [INFO] [stdout] --> src/common_collection/vector_study.rs:74:9 [INFO] [stdout] | [INFO] [stdout] 74 | let values: [i32; 3] = [12, 23, 43]; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_number` [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:78:13 [INFO] [stdout] | [INFO] [stdout] 78 | let some_number = Some(5); [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_number` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_char` [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:79:13 [INFO] [stdout] | [INFO] [stdout] 79 | let some_char = Some('S'); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_char` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `number` [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:82:13 [INFO] [stdout] | [INFO] [stdout] 82 | let number: i32 = 32; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str` [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:119:23 [INFO] [stdout] | [INFO] [stdout] 119 | Coin::ETH(str) => 100_0000_0000_0000_0000, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str` [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:120:24 [INFO] [stdout] | [INFO] [stdout] 120 | Coin::USDT(str) => 100_0000, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num1` [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:61:9 [INFO] [stdout] | [INFO] [stdout] 61 | let num1: &i32; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_num1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num2` [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | let num2: &'a i32; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_num2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num3` [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:63:9 [INFO] [stdout] | [INFO] [stdout] 63 | let num3: &'a mut i32; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_num3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:74:9 [INFO] [stdout] | [INFO] [stdout] 74 | let s: &'static str = "test 'static"; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/iterator_closure/closure_study.rs:66:9 [INFO] [stdout] | [INFO] [stdout] 66 | let s = example_closures(String::from("closures.")); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership/ownership.rs:33:13 [INFO] [stdout] | [INFO] [stdout] 33 | let mut s1 = String::from("hello"); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership/ownership.rs:55:17 [INFO] [stdout] | [INFO] [stdout] 55 | let mut s4 = s3; [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership/ownership.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | let mut str = String::from("move_function_study hello"); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership/ownership.rs:73:13 [INFO] [stdout] | [INFO] [stdout] 73 | let mut int1 = 188; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str_ref` [INFO] [stdout] --> src/ownership/ownership.rs:121:19 [INFO] [stdout] | [INFO] [stdout] 121 | fn modify_str(str_ref: &String) { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_str_ref` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `string_literal` [INFO] [stdout] --> src/ownership/ownership.rs:223:13 [INFO] [stdout] | [INFO] [stdout] 223 | let string_literal = "hello string literal"; [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_string_literal` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership/ownership.rs:233:13 [INFO] [stdout] | [INFO] [stdout] 233 | let mut source_str = String::from("slice hello"); [INFO] [stdout] | ----^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `color` [INFO] [stdout] --> src/struct_related/define_init_struct.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | let color = Color(32, 34, 43); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_color` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `point` [INFO] [stdout] --> src/struct_related/define_init_struct.rs:45:9 [INFO] [stdout] | [INFO] [stdout] 45 | let point = Point(23, -23); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_point` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `decimal` is never read [INFO] [stdout] --> src/common_collection/hash_map_study.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 10 | struct CoinProerty { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] 11 | decimal: u32, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `CoinProerty` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/common_collection/vector_study.rs:55:9 [INFO] [stdout] | [INFO] [stdout] 55 | Int(i32), [INFO] [stdout] | --- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 55 - Int(i32), [INFO] [stdout] 55 + Int(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/common_collection/vector_study.rs:56:11 [INFO] [stdout] | [INFO] [stdout] 56 | Float(f64), [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 56 - Float(f64), [INFO] [stdout] 56 + Float(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/common_collection/vector_study.rs:57:10 [INFO] [stdout] | [INFO] [stdout] 57 | Text(String), [INFO] [stdout] | ---- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 57 - Text(String), [INFO] [stdout] 57 + Text(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `V6` is never constructed [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 3 | enum IpAddrType { [INFO] [stdout] | ---------- variant in this enum [INFO] [stdout] 4 | V4, [INFO] [stdout] 5 | V6, [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `IpAddrType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `ip_addr_type` and `address` are never read [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 9 | struct IpAddr { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 10 | ip_addr_type: IpAddrType, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] 11 | address: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `IpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:16:12 [INFO] [stdout] | [INFO] [stdout] 16 | V4(String), [INFO] [stdout] | -- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `IpAddrEnum` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 16 - V4(String), [INFO] [stdout] 16 + V4(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `V6` is never constructed [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 15 | enum IpAddrEnum { [INFO] [stdout] | ---------- variant in this enum [INFO] [stdout] 16 | V4(String), [INFO] [stdout] 17 | V6(String), [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `IpAddrEnum` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Message` is never used [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:21:10 [INFO] [stdout] | [INFO] [stdout] 21 | enum Message { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:49:15 [INFO] [stdout] | [INFO] [stdout] 49 | Write(String), // 包括一个单个的字符串 [INFO] [stdout] | ----- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Msg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 49 - Write(String), // 包括一个单个的字符串 [INFO] [stdout] 49 + Write(()), // 包括一个单个的字符串 [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Quit`, `Move`, and `ChangeColor` are never constructed [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 46 | enum Msg { [INFO] [stdout] | --- variants in this enum [INFO] [stdout] 47 | Quit, // 没有数据关联 [INFO] [stdout] | ^^^^ [INFO] [stdout] 48 | Move { x: i32, y: i32 }, // 像struct做的，有命名的字段 [INFO] [stdout] | ^^^^ [INFO] [stdout] 49 | Write(String), // 包括一个单个的字符串 [INFO] [stdout] 50 | ChangeColor(i32, i64, String), // 包括几个类型的数据 [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Msg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `ETH` and `USDT` are never constructed [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:110:9 [INFO] [stdout] | [INFO] [stdout] 108 | enum Coin { [INFO] [stdout] | ---- variants in this enum [INFO] [stdout] 109 | BTC(String), [INFO] [stdout] 110 | ETH(String), [INFO] [stdout] | ^^^ [INFO] [stdout] 111 | USDT(String), [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Coin` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `call_panic_self` is never used [INFO] [stdout] --> src/error_handle/panic_unrecoverable.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn call_panic_self() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `cause_lib_panic` is never used [INFO] [stdout] --> src/error_handle/panic_unrecoverable.rs:7:4 [INFO] [stdout] | [INFO] [stdout] 7 | fn cause_lib_panic() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Score` is never constructed [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:33:8 [INFO] [stdout] | [INFO] [stdout] 33 | struct Score<'a> { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get_score` is never used [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:40:8 [INFO] [stdout] | [INFO] [stdout] 38 | impl<'a> Score<'a> { [INFO] [stdout] | ------------------ method in this implementation [INFO] [stdout] 39 | // [规则3]：因为参数之一是 &self ，所以返回类型获取 &self 的生命周期 [INFO] [stdout] 40 | fn get_score(&self) -> &i32 { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `first_world` is never used [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:46:4 [INFO] [stdout] | [INFO] [stdout] 46 | fn first_world(str: &str) -> &str { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Pair` is never constructed [INFO] [stdout] --> src/generic_traits_lifetime/traits_study.rs:3:8 [INFO] [stdout] | [INFO] [stdout] 3 | struct Pair { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/generic_traits_lifetime/traits_study.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 7 | impl Pair { [INFO] [stdout] | --------------- associated function in this implementation [INFO] [stdout] 8 | fn new(x: T, y: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `cmp_display` is never used [INFO] [stdout] --> src/generic_traits_lifetime/traits_study.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 12 | impl Pair { [INFO] [stdout] | ------------------------------------- method in this implementation [INFO] [stdout] 13 | fn cmp_display(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Tweet` is never constructed [INFO] [stdout] --> src/generic_traits_lifetime/traits_study.rs:25:8 [INFO] [stdout] | [INFO] [stdout] 25 | struct Tweet { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `example_closures_study` is never used [INFO] [stdout] --> src/iterator_closure/closure_study.rs:64:4 [INFO] [stdout] | [INFO] [stdout] 64 | fn example_closures_study() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `height` is never read [INFO] [stdout] --> src/iterator_closure/closure_study.rs:116:5 [INFO] [stdout] | [INFO] [stdout] 114 | struct Rectangle { [INFO] [stdout] | --------- field in this struct [INFO] [stdout] 115 | width: u32, [INFO] [stdout] 116 | height: u32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Shoe` is never constructed [INFO] [stdout] --> src/iterator_closure/iterator_process_study.rs:48:8 [INFO] [stdout] | [INFO] [stdout] 48 | struct Shoe { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `shoe_in_size` is never used [INFO] [stdout] --> src/iterator_closure/iterator_process_study.rs:53:4 [INFO] [stdout] | [INFO] [stdout] 53 | fn shoe_in_size(shoes: Vec, shoe_size: u32) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `modify_str` is never used [INFO] [stdout] --> src/ownership/ownership.rs:121:8 [INFO] [stdout] | [INFO] [stdout] 121 | fn modify_str(str_ref: &String) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `user_id`, `age`, and `active` are never read [INFO] [stdout] --> src/struct_related/define_init_struct.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct User { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 3 | user_id: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 4 | user_name: String, [INFO] [stdout] 5 | age: u8, [INFO] [stdout] | ^^^ [INFO] [stdout] 6 | active: bool, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/struct_related/define_init_struct.rs:25:14 [INFO] [stdout] | [INFO] [stdout] 25 | struct Color(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> src/struct_related/define_init_struct.rs:26:14 [INFO] [stdout] | [INFO] [stdout] 26 | struct Point(i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `coinMap` should have a snake case name [INFO] [stdout] --> src/common_collection/hash_map_study.rs:33:13 [INFO] [stdout] | [INFO] [stdout] 33 | let mut coinMap: HashMap = HashMap::new(); [INFO] [stdout] | ^^^^^^^ help: convert the identifier to snake case: `coin_map` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling study-rust-example v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function `guess_game` is never used [INFO] [stdout] --> src/main.rs:7:4 [INFO] [stdout] | [INFO] [stdout] 7 | fn guess_game() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression [INFO] [stdout] --> src/basic_concept/basic_concept.rs:154:20 [INFO] [stdout] | [INFO] [stdout] 154 | for num in (0..a1.len()) { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 154 - for num in (0..a1.len()) { [INFO] [stdout] 154 + for num in 0..a1.len() { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `hash_map` [INFO] [stdout] --> src/common_collection/hash_map_study.rs:1:24 [INFO] [stdout] | [INFO] [stdout] 1 | use std::collections::{hash_map, HashMap}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Write` and `self` [INFO] [stdout] --> src/package_crate_module/package_crate_module.rs:2:15 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{self, Write}; [INFO] [stdout] | ^^^^ ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::*` [INFO] [stdout] --> src/package_crate_module/package_crate_module.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::collections::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `max64_int` [INFO] [stdout] --> src/basic_concept/basic_concept.rs:26:13 [INFO] [stdout] | [INFO] [stdout] 26 | let max64_int = 2 ^ 64 - 1; [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max64_int` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `x` is never read [INFO] [stdout] --> src/basic_concept/basic_concept.rs:59:17 [INFO] [stdout] | [INFO] [stdout] 59 | let mut x: u16 = 10000; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `socket` [INFO] [stdout] --> src/bin/socket_server.rs:11:13 [INFO] [stdout] | [INFO] [stdout] 11 | Ok((socket, addr)) => println!("Got a client: {addr:?}"), [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_socket` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `vec1` is never read [INFO] [stdout] --> src/common_collection/vector_study.rs:72:13 [INFO] [stdout] | [INFO] [stdout] 72 | let mut vec1: Vec = Vec::new(); [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `values` [INFO] [stdout] --> src/common_collection/vector_study.rs:74:9 [INFO] [stdout] | [INFO] [stdout] 74 | let values: [i32; 3] = [12, 23, 43]; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_number` [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:78:13 [INFO] [stdout] | [INFO] [stdout] 78 | let some_number = Some(5); [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_number` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_char` [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:79:13 [INFO] [stdout] | [INFO] [stdout] 79 | let some_char = Some('S'); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_char` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `number` [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:82:13 [INFO] [stdout] | [INFO] [stdout] 82 | let number: i32 = 32; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str` [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:119:23 [INFO] [stdout] | [INFO] [stdout] 119 | Coin::ETH(str) => 100_0000_0000_0000_0000, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str` [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:120:24 [INFO] [stdout] | [INFO] [stdout] 120 | Coin::USDT(str) => 100_0000, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num1` [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:61:9 [INFO] [stdout] | [INFO] [stdout] 61 | let num1: &i32; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_num1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num2` [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | let num2: &'a i32; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_num2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num3` [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:63:9 [INFO] [stdout] | [INFO] [stdout] 63 | let num3: &'a mut i32; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_num3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:74:9 [INFO] [stdout] | [INFO] [stdout] 74 | let s: &'static str = "test 'static"; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/iterator_closure/closure_study.rs:66:9 [INFO] [stdout] | [INFO] [stdout] 66 | let s = example_closures(String::from("closures.")); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership/ownership.rs:33:13 [INFO] [stdout] | [INFO] [stdout] 33 | let mut s1 = String::from("hello"); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership/ownership.rs:55:17 [INFO] [stdout] | [INFO] [stdout] 55 | let mut s4 = s3; [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership/ownership.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | let mut str = String::from("move_function_study hello"); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership/ownership.rs:73:13 [INFO] [stdout] | [INFO] [stdout] 73 | let mut int1 = 188; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str_ref` [INFO] [stdout] --> src/ownership/ownership.rs:121:19 [INFO] [stdout] | [INFO] [stdout] 121 | fn modify_str(str_ref: &String) { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_str_ref` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `string_literal` [INFO] [stdout] --> src/ownership/ownership.rs:223:13 [INFO] [stdout] | [INFO] [stdout] 223 | let string_literal = "hello string literal"; [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_string_literal` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership/ownership.rs:233:13 [INFO] [stdout] | [INFO] [stdout] 233 | let mut source_str = String::from("slice hello"); [INFO] [stdout] | ----^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `color` [INFO] [stdout] --> src/struct_related/define_init_struct.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | let color = Color(32, 34, 43); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_color` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `point` [INFO] [stdout] --> src/struct_related/define_init_struct.rs:45:9 [INFO] [stdout] | [INFO] [stdout] 45 | let point = Point(23, -23); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_point` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `decimal` is never read [INFO] [stdout] --> src/common_collection/hash_map_study.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 10 | struct CoinProerty { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] 11 | decimal: u32, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `CoinProerty` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/common_collection/vector_study.rs:55:9 [INFO] [stdout] | [INFO] [stdout] 55 | Int(i32), [INFO] [stdout] | --- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 55 - Int(i32), [INFO] [stdout] 55 + Int(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/common_collection/vector_study.rs:56:11 [INFO] [stdout] | [INFO] [stdout] 56 | Float(f64), [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 56 - Float(f64), [INFO] [stdout] 56 + Float(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/common_collection/vector_study.rs:57:10 [INFO] [stdout] | [INFO] [stdout] 57 | Text(String), [INFO] [stdout] | ---- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 57 - Text(String), [INFO] [stdout] 57 + Text(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `V6` is never constructed [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 3 | enum IpAddrType { [INFO] [stdout] | ---------- variant in this enum [INFO] [stdout] 4 | V4, [INFO] [stdout] 5 | V6, [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `IpAddrType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `ip_addr_type` and `address` are never read [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 9 | struct IpAddr { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 10 | ip_addr_type: IpAddrType, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] 11 | address: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `IpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:16:12 [INFO] [stdout] | [INFO] [stdout] 16 | V4(String), [INFO] [stdout] | -- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `IpAddrEnum` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 16 - V4(String), [INFO] [stdout] 16 + V4(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `V6` is never constructed [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 15 | enum IpAddrEnum { [INFO] [stdout] | ---------- variant in this enum [INFO] [stdout] 16 | V4(String), [INFO] [stdout] 17 | V6(String), [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `IpAddrEnum` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Message` is never used [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:21:10 [INFO] [stdout] | [INFO] [stdout] 21 | enum Message { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:49:15 [INFO] [stdout] | [INFO] [stdout] 49 | Write(String), // 包括一个单个的字符串 [INFO] [stdout] | ----- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Msg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 49 - Write(String), // 包括一个单个的字符串 [INFO] [stdout] 49 + Write(()), // 包括一个单个的字符串 [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Quit`, `Move`, and `ChangeColor` are never constructed [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 46 | enum Msg { [INFO] [stdout] | --- variants in this enum [INFO] [stdout] 47 | Quit, // 没有数据关联 [INFO] [stdout] | ^^^^ [INFO] [stdout] 48 | Move { x: i32, y: i32 }, // 像struct做的，有命名的字段 [INFO] [stdout] | ^^^^ [INFO] [stdout] 49 | Write(String), // 包括一个单个的字符串 [INFO] [stdout] 50 | ChangeColor(i32, i64, String), // 包括几个类型的数据 [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Msg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `ETH` and `USDT` are never constructed [INFO] [stdout] --> src/enum_pattern_match/enum_pattern_match.rs:110:9 [INFO] [stdout] | [INFO] [stdout] 108 | enum Coin { [INFO] [stdout] | ---- variants in this enum [INFO] [stdout] 109 | BTC(String), [INFO] [stdout] 110 | ETH(String), [INFO] [stdout] | ^^^ [INFO] [stdout] 111 | USDT(String), [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Coin` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `call_panic_self` is never used [INFO] [stdout] --> src/error_handle/panic_unrecoverable.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn call_panic_self() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `cause_lib_panic` is never used [INFO] [stdout] --> src/error_handle/panic_unrecoverable.rs:7:4 [INFO] [stdout] | [INFO] [stdout] 7 | fn cause_lib_panic() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Score` is never constructed [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:33:8 [INFO] [stdout] | [INFO] [stdout] 33 | struct Score<'a> { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get_score` is never used [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:40:8 [INFO] [stdout] | [INFO] [stdout] 38 | impl<'a> Score<'a> { [INFO] [stdout] | ------------------ method in this implementation [INFO] [stdout] 39 | // [规则3]：因为参数之一是 &self ，所以返回类型获取 &self 的生命周期 [INFO] [stdout] 40 | fn get_score(&self) -> &i32 { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `first_world` is never used [INFO] [stdout] --> src/generic_traits_lifetime/lifetime_study.rs:46:4 [INFO] [stdout] | [INFO] [stdout] 46 | fn first_world(str: &str) -> &str { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Pair` is never constructed [INFO] [stdout] --> src/generic_traits_lifetime/traits_study.rs:3:8 [INFO] [stdout] | [INFO] [stdout] 3 | struct Pair { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/generic_traits_lifetime/traits_study.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 7 | impl Pair { [INFO] [stdout] | --------------- associated function in this implementation [INFO] [stdout] 8 | fn new(x: T, y: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `cmp_display` is never used [INFO] [stdout] --> src/generic_traits_lifetime/traits_study.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 12 | impl Pair { [INFO] [stdout] | ------------------------------------- method in this implementation [INFO] [stdout] 13 | fn cmp_display(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Tweet` is never constructed [INFO] [stdout] --> src/generic_traits_lifetime/traits_study.rs:25:8 [INFO] [stdout] | [INFO] [stdout] 25 | struct Tweet { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `example_closures_study` is never used [INFO] [stdout] --> src/iterator_closure/closure_study.rs:64:4 [INFO] [stdout] | [INFO] [stdout] 64 | fn example_closures_study() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `height` is never read [INFO] [stdout] --> src/iterator_closure/closure_study.rs:116:5 [INFO] [stdout] | [INFO] [stdout] 114 | struct Rectangle { [INFO] [stdout] | --------- field in this struct [INFO] [stdout] 115 | width: u32, [INFO] [stdout] 116 | height: u32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `modify_str` is never used [INFO] [stdout] --> src/ownership/ownership.rs:121:8 [INFO] [stdout] | [INFO] [stdout] 121 | fn modify_str(str_ref: &String) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `user_id`, `age`, and `active` are never read [INFO] [stdout] --> src/struct_related/define_init_struct.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct User { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 3 | user_id: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 4 | user_name: String, [INFO] [stdout] 5 | age: u8, [INFO] [stdout] | ^^^ [INFO] [stdout] 6 | active: bool, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/struct_related/define_init_struct.rs:25:14 [INFO] [stdout] | [INFO] [stdout] 25 | struct Color(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> src/struct_related/define_init_struct.rs:26:14 [INFO] [stdout] | [INFO] [stdout] 26 | struct Point(i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `coinMap` should have a snake case name [INFO] [stdout] --> src/common_collection/hash_map_study.rs:33:13 [INFO] [stdout] | [INFO] [stdout] 33 | let mut coinMap: HashMap = HashMap::new(); [INFO] [stdout] | ^^^^^^^ help: convert the identifier to snake case: `coin_map` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.89s [INFO] running `Command { std: "docker" "inspect" "04bad82a1788130ad510ea54c7ba23010c07f0babe5f04fca6393faa55d4de05", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "04bad82a1788130ad510ea54c7ba23010c07f0babe5f04fca6393faa55d4de05", kill_on_drop: false }` [INFO] [stdout] 04bad82a1788130ad510ea54c7ba23010c07f0babe5f04fca6393faa55d4de05 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 4199b915644a26093c2513fc9ada465a0567b57f14ef02126a3772a036aa9629 [INFO] running `Command { std: "docker" "start" "-a" "4199b915644a26093c2513fc9ada465a0567b57f14ef02126a3772a036aa9629", kill_on_drop: false }` [INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression [INFO] [stderr] --> src/basic_concept/basic_concept.rs:154:20 [INFO] [stderr] | [INFO] [stderr] 154 | for num in (0..a1.len()) { [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 154 - for num in (0..a1.len()) { [INFO] [stderr] 154 + for num in 0..a1.len() { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unused import: `hash_map` [INFO] [stderr] --> src/common_collection/hash_map_study.rs:1:24 [INFO] [stderr] | [INFO] [stderr] 1 | use std::collections::{hash_map, HashMap}; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Write` and `self` [INFO] [stderr] --> src/package_crate_module/package_crate_module.rs:2:15 [INFO] [stderr] | [INFO] [stderr] 2 | use std::io::{self, Write}; [INFO] [stderr] | ^^^^ ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::collections::*` [INFO] [stderr] --> src/package_crate_module/package_crate_module.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use std::collections::*; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `max64_int` [INFO] [stderr] --> src/basic_concept/basic_concept.rs:26:13 [INFO] [stderr] | [INFO] [stderr] 26 | let max64_int = 2 ^ 64 - 1; [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max64_int` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: value assigned to `x` is never read [INFO] [stderr] --> src/basic_concept/basic_concept.rs:59:17 [INFO] [stderr] | [INFO] [stderr] 59 | let mut x: u16 = 10000; [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: value assigned to `vec1` is never read [INFO] [stderr] --> src/common_collection/vector_study.rs:72:13 [INFO] [stderr] | [INFO] [stderr] 72 | let mut vec1: Vec = Vec::new(); [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `values` [INFO] [stderr] --> src/common_collection/vector_study.rs:74:9 [INFO] [stderr] | [INFO] [stderr] 74 | let values: [i32; 3] = [12, 23, 43]; [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `some_number` [INFO] [stderr] --> src/enum_pattern_match/enum_pattern_match.rs:78:13 [INFO] [stderr] | [INFO] [stderr] 78 | let some_number = Some(5); [INFO] [stderr] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_number` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `some_char` [INFO] [stderr] --> src/enum_pattern_match/enum_pattern_match.rs:79:13 [INFO] [stderr] | [INFO] [stderr] 79 | let some_char = Some('S'); [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_char` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `number` [INFO] [stderr] --> src/enum_pattern_match/enum_pattern_match.rs:82:13 [INFO] [stderr] | [INFO] [stderr] 82 | let number: i32 = 32; [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `str` [INFO] [stderr] --> src/enum_pattern_match/enum_pattern_match.rs:119:23 [INFO] [stderr] | [INFO] [stderr] 119 | Coin::ETH(str) => 100_0000_0000_0000_0000, [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `str` [INFO] [stderr] --> src/enum_pattern_match/enum_pattern_match.rs:120:24 [INFO] [stderr] | [INFO] [stderr] 120 | Coin::USDT(str) => 100_0000, [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num1` [INFO] [stderr] --> src/generic_traits_lifetime/lifetime_study.rs:61:9 [INFO] [stderr] | [INFO] [stderr] 61 | let num1: &i32; [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_num1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num2` [INFO] [stderr] --> src/generic_traits_lifetime/lifetime_study.rs:62:9 [INFO] [stderr] | [INFO] [stderr] 62 | let num2: &'a i32; [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_num2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num3` [INFO] [stderr] --> src/generic_traits_lifetime/lifetime_study.rs:63:9 [INFO] [stderr] | [INFO] [stderr] 63 | let num3: &'a mut i32; [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_num3` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s` [INFO] [stderr] --> src/generic_traits_lifetime/lifetime_study.rs:74:9 [INFO] [stderr] | [INFO] [stderr] 74 | let s: &'static str = "test 'static"; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s` [INFO] [stderr] --> src/iterator_closure/closure_study.rs:66:9 [INFO] [stderr] | [INFO] [stderr] 66 | let s = example_closures(String::from("closures.")); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/ownership/ownership.rs:33:13 [INFO] [stderr] | [INFO] [stderr] 33 | let mut s1 = String::from("hello"); [INFO] [stderr] | ----^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/ownership/ownership.rs:55:17 [INFO] [stderr] | [INFO] [stderr] 55 | let mut s4 = s3; [INFO] [stderr] | ----^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/ownership/ownership.rs:69:13 [INFO] [stderr] | [INFO] [stderr] 69 | let mut str = String::from("move_function_study hello"); [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/ownership/ownership.rs:73:13 [INFO] [stderr] | [INFO] [stderr] 73 | let mut int1 = 188; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `str_ref` [INFO] [stderr] --> src/ownership/ownership.rs:121:19 [INFO] [stderr] | [INFO] [stderr] 121 | fn modify_str(str_ref: &String) { [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_str_ref` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `string_literal` [INFO] [stderr] --> src/ownership/ownership.rs:223:13 [INFO] [stderr] | [INFO] [stderr] 223 | let string_literal = "hello string literal"; [INFO] [stderr] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_string_literal` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/ownership/ownership.rs:233:13 [INFO] [stderr] | [INFO] [stderr] 233 | let mut source_str = String::from("slice hello"); [INFO] [stderr] | ----^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `color` [INFO] [stderr] --> src/struct_related/define_init_struct.rs:44:9 [INFO] [stderr] | [INFO] [stderr] 44 | let color = Color(32, 34, 43); [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_color` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `point` [INFO] [stderr] --> src/struct_related/define_init_struct.rs:45:9 [INFO] [stderr] | [INFO] [stderr] 45 | let point = Point(23, -23); [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_point` [INFO] [stderr] [INFO] [stderr] warning: field `decimal` is never read [INFO] [stderr] --> src/common_collection/hash_map_study.rs:11:5 [INFO] [stderr] | [INFO] [stderr] 10 | struct CoinProerty { [INFO] [stderr] | ----------- field in this struct [INFO] [stderr] 11 | decimal: u32, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `CoinProerty` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: field `0` is never read [INFO] [stderr] --> src/common_collection/vector_study.rs:55:9 [INFO] [stderr] | [INFO] [stderr] 55 | Int(i32), [INFO] [stderr] | --- ^^^ [INFO] [stderr] | | [INFO] [stderr] | field in this variant [INFO] [stderr] | [INFO] [stderr] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stderr] | [INFO] [stderr] 55 - Int(i32), [INFO] [stderr] 55 + Int(()), [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: field `0` is never read [INFO] [stderr] --> src/common_collection/vector_study.rs:56:11 [INFO] [stderr] | [INFO] [stderr] 56 | Float(f64), [INFO] [stderr] | ----- ^^^ [INFO] [stderr] | | [INFO] [stderr] | field in this variant [INFO] [stderr] | [INFO] [stderr] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stderr] | [INFO] [stderr] 56 - Float(f64), [INFO] [stderr] 56 + Float(()), [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: field `0` is never read [INFO] [stderr] --> src/common_collection/vector_study.rs:57:10 [INFO] [stderr] | [INFO] [stderr] 57 | Text(String), [INFO] [stderr] | ---- ^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | field in this variant [INFO] [stderr] | [INFO] [stderr] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stderr] | [INFO] [stderr] 57 - Text(String), [INFO] [stderr] 57 + Text(()), [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: variant `V6` is never constructed [INFO] [stderr] --> src/enum_pattern_match/enum_pattern_match.rs:5:9 [INFO] [stderr] | [INFO] [stderr] 3 | enum IpAddrType { [INFO] [stderr] | ---------- variant in this enum [INFO] [stderr] 4 | V4, [INFO] [stderr] 5 | V6, [INFO] [stderr] | ^^ [INFO] [stderr] | [INFO] [stderr] = note: `IpAddrType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] [INFO] [stderr] warning: fields `ip_addr_type` and `address` are never read [INFO] [stderr] --> src/enum_pattern_match/enum_pattern_match.rs:10:9 [INFO] [stderr] | [INFO] [stderr] 9 | struct IpAddr { [INFO] [stderr] | ------ fields in this struct [INFO] [stderr] 10 | ip_addr_type: IpAddrType, [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] 11 | address: String, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `IpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] [INFO] [stderr] warning: field `0` is never read [INFO] [stderr] --> src/enum_pattern_match/enum_pattern_match.rs:16:12 [INFO] [stderr] | [INFO] [stderr] 16 | V4(String), [INFO] [stderr] | -- ^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | field in this variant [INFO] [stderr] | [INFO] [stderr] = note: `IpAddrEnum` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stderr] | [INFO] [stderr] 16 - V4(String), [INFO] [stderr] 16 + V4(()), [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: variant `V6` is never constructed [INFO] [stderr] --> src/enum_pattern_match/enum_pattern_match.rs:17:9 [INFO] [stderr] | [INFO] [stderr] 15 | enum IpAddrEnum { [INFO] [stderr] | ---------- variant in this enum [INFO] [stderr] 16 | V4(String), [INFO] [stderr] 17 | V6(String), [INFO] [stderr] | ^^ [INFO] [stderr] | [INFO] [stderr] = note: `IpAddrEnum` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] [INFO] [stderr] warning: enum `Message` is never used [INFO] [stderr] --> src/enum_pattern_match/enum_pattern_match.rs:21:10 [INFO] [stderr] | [INFO] [stderr] 21 | enum Message { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field `0` is never read [INFO] [stderr] --> src/enum_pattern_match/enum_pattern_match.rs:49:15 [INFO] [stderr] | [INFO] [stderr] 49 | Write(String), // 包括一个单个的字符串 [INFO] [stderr] | ----- ^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | field in this variant [INFO] [stderr] | [INFO] [stderr] = note: `Msg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stderr] | [INFO] [stderr] 49 - Write(String), // 包括一个单个的字符串 [INFO] [stderr] 49 + Write(()), // 包括一个单个的字符串 [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: variants `Quit`, `Move`, and `ChangeColor` are never constructed [INFO] [stderr] --> src/enum_pattern_match/enum_pattern_match.rs:47:9 [INFO] [stderr] | [INFO] [stderr] 46 | enum Msg { [INFO] [stderr] | --- variants in this enum [INFO] [stderr] 47 | Quit, // 没有数据关联 [INFO] [stderr] | ^^^^ [INFO] [stderr] 48 | Move { x: i32, y: i32 }, // 像struct做的，有命名的字段 [INFO] [stderr] | ^^^^ [INFO] [stderr] 49 | Write(String), // 包括一个单个的字符串 [INFO] [stderr] 50 | ChangeColor(i32, i64, String), // 包括几个类型的数据 [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `Msg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] [INFO] [stderr] warning: variants `ETH` and `USDT` are never constructed [INFO] [stderr] --> src/enum_pattern_match/enum_pattern_match.rs:110:9 [INFO] [stderr] | [INFO] [stderr] 108 | enum Coin { [INFO] [stderr] | ---- variants in this enum [INFO] [stderr] 109 | BTC(String), [INFO] [stdout] [INFO] [stderr] 110 | ETH(String), [INFO] [stdout] running 7 tests [INFO] [stderr] | ^^^ [INFO] [stderr] 111 | USDT(String), [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `Coin` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] [INFO] [stderr] warning: function `call_panic_self` is never used [INFO] [stderr] --> src/error_handle/panic_unrecoverable.rs:1:4 [INFO] [stderr] | [INFO] [stderr] 1 | fn call_panic_self() { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `cause_lib_panic` is never used [INFO] [stderr] --> src/error_handle/panic_unrecoverable.rs:7:4 [INFO] [stderr] | [INFO] [stderr] 7 | fn cause_lib_panic() { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `Score` is never constructed [INFO] [stderr] --> src/generic_traits_lifetime/lifetime_study.rs:33:8 [INFO] [stderr] | [INFO] [stderr] 33 | struct Score<'a> { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method `get_score` is never used [INFO] [stderr] --> src/generic_traits_lifetime/lifetime_study.rs:40:8 [INFO] [stderr] | [INFO] [stderr] 38 | impl<'a> Score<'a> { [INFO] [stderr] | ------------------ method in this implementation [INFO] [stderr] 39 | // [规则3]：因为参数之一是 &self ，所以返回类型获取 &self 的生命周期 [INFO] [stderr] 40 | fn get_score(&self) -> &i32 { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `first_world` is never used [INFO] [stderr] --> src/generic_traits_lifetime/lifetime_study.rs:46:4 [INFO] [stderr] | [INFO] [stderr] 46 | fn first_world(str: &str) -> &str { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `Pair` is never constructed [INFO] [stderr] --> src/generic_traits_lifetime/traits_study.rs:3:8 [INFO] [stderr] | [INFO] [stderr] 3 | struct Pair { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function `new` is never used [INFO] [stderr] --> src/generic_traits_lifetime/traits_study.rs:8:8 [INFO] [stderr] | [INFO] [stderr] 7 | impl Pair { [INFO] [stderr] | --------------- associated function in this implementation [INFO] [stderr] 8 | fn new(x: T, y: T) -> Self { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: method `cmp_display` is never used [INFO] [stderr] --> src/generic_traits_lifetime/traits_study.rs:13:8 [INFO] [stderr] | [INFO] [stderr] 12 | impl Pair { [INFO] [stderr] | ------------------------------------- method in this implementation [INFO] [stderr] 13 | fn cmp_display(&self) { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `Tweet` is never constructed [INFO] [stderr] --> src/generic_traits_lifetime/traits_study.rs:25:8 [INFO] [stderr] | [INFO] [stderr] 25 | struct Tweet { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `example_closures_study` is never used [INFO] [stderr] --> src/iterator_closure/closure_study.rs:64:4 [INFO] [stderr] | [INFO] [stderr] 64 | fn example_closures_study() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field `height` is never read [INFO] [stderr] --> src/iterator_closure/closure_study.rs:116:5 [INFO] [stderr] | [INFO] [stderr] 114 | struct Rectangle { [INFO] [stderr] | --------- field in this struct [INFO] [stderr] 115 | width: u32, [INFO] [stderr] 116 | height: u32, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] [INFO] [stderr] warning: struct `Shoe` is never constructed [INFO] [stderr] --> src/iterator_closure/iterator_process_study.rs:48:8 [INFO] [stderr] | [INFO] [stderr] 48 | struct Shoe { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `shoe_in_size` is never used [INFO] [stderr] --> src/iterator_closure/iterator_process_study.rs:53:4 [INFO] [stderr] | [INFO] [stderr] 53 | fn shoe_in_size(shoes: Vec, shoe_size: u32) -> Vec { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `modify_str` is never used [INFO] [stderr] --> src/ownership/ownership.rs:121:8 [INFO] [stderr] | [INFO] [stderr] 121 | fn modify_str(str_ref: &String) { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: fields `user_id`, `age`, and `active` are never read [INFO] [stderr] --> src/struct_related/define_init_struct.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 2 | struct User { [INFO] [stderr] | ---- fields in this struct [INFO] [stderr] 3 | user_id: String, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] 4 | user_name: String, [INFO] [stderr] 5 | age: u8, [INFO] [stderr] | ^^^ [INFO] [stderr] 6 | active: bool, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] [INFO] [stderr] warning: fields `0`, `1`, and `2` are never read [INFO] [stderr] --> src/struct_related/define_init_struct.rs:25:14 [INFO] [stderr] | [INFO] [stderr] 25 | struct Color(i32, i32, i32); [INFO] [stderr] | ----- ^^^ ^^^ ^^^ [INFO] [stderr] | | [INFO] [stderr] | fields in this struct [INFO] [stderr] | [INFO] [stderr] = help: consider removing these fields [INFO] [stderr] [INFO] [stderr] warning: fields `0` and `1` are never read [INFO] [stderr] --> src/struct_related/define_init_struct.rs:26:14 [INFO] [stderr] | [INFO] [stderr] 26 | struct Point(i32, i32); [INFO] [stderr] | ----- ^^^ ^^^ [INFO] [stderr] | | [INFO] [stderr] | fields in this struct [INFO] [stderr] | [INFO] [stderr] = help: consider removing these fields [INFO] [stderr] [INFO] [stderr] warning: variable `coinMap` should have a snake case name [INFO] [stderr] --> src/common_collection/hash_map_study.rs:33:13 [INFO] [stderr] | [INFO] [stderr] 33 | let mut coinMap: HashMap = HashMap::new(); [INFO] [stderr] | ^^^^^^^ help: convert the identifier to snake case: `coin_map` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: `study-rust-example` (lib) generated 57 warnings (run `cargo fix --lib -p study-rust-example` to apply 9 suggestions) [INFO] [stderr] warning: function `guess_game` is never used [INFO] [stderr] --> src/main.rs:7:4 [INFO] [stderr] | [INFO] [stderr] 7 | fn guess_game() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `socket` [INFO] [stderr] --> src/bin/socket_server.rs:11:13 [INFO] [stderr] | [INFO] [stderr] 11 | Ok((socket, addr)) => println!("Got a client: {addr:?}"), [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_socket` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: `study-rust-example` (bin "study-rust-example" test) generated 1 warning [INFO] [stderr] warning: `study-rust-example` (bin "socket_server" test) generated 1 warning [INFO] [stderr] warning: `study-rust-example` (lib test) generated 55 warnings (55 duplicates) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/study_rust_example-a021296c3b50d449) [INFO] [stdout] test generic_traits_lifetime::test_study::not_equal_test ... ok [INFO] [stdout] test generic_traits_lifetime::test_study::longer_str_with_announcement_test ... ok [INFO] [stdout] test iterator_closure::iterator_process_study::tests::test_shoe_in_size ... ok [INFO] [stdout] test iterator_closure::iterator_process_study::tests::test_iterator_demo ... ok [INFO] [stdout] test generic_traits_lifetime::test_study::assert_test ... FAILED [INFO] [stdout] test generic_traits_lifetime::test_study::should_panic_test - should panic ... ok [INFO] [stdout] test generic_traits_lifetime::test_study::result_generic_test ... ok [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- generic_traits_lifetime::test_study::assert_test stdout ---- [INFO] [stdout] [INFO] [stdout] thread 'generic_traits_lifetime::test_study::assert_test' (24) panicked at src/generic_traits_lifetime/test_study.rs:22:5: [INFO] [stdout] test method did not contain name, value was hello Tracking [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x63eaa08b8702 - std::backtrace_rs::backtrace::libunwind::trace::h62f3c6bea0fedab3 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x63eaa08b8702 - std::backtrace_rs::backtrace::trace_unsynchronized::hc41aaca6c0af0bde [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x63eaa08b8702 - std::sys::backtrace::_print_fmt::h33ac2b97007106cc [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x63eaa08b8702 - ::fmt::h4e0a3aeea0f9c085 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x63eaa08c8a7f - core::fmt::rt::Argument::fmt::h1edd6a3e00b22f10 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x63eaa08c8a7f - core::fmt::write::hecf68a131630c74d [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/fmt/mod.rs:1468:25 [INFO] [stdout] 6: 0x63eaa0885b71 - std::io::default_write_fmt::ha6b238eff7f0ef8a [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x63eaa0885b71 - std::io::Write::write_fmt::h9846fe3d2a36c1ea [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x63eaa0891d22 - std::sys::backtrace::BacktraceLock::print::h75160192768e5621 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x63eaa089686f - std::panicking::default_hook::{{closure}}::h14d82797cfb1ddcb [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x63eaa0896701 - std::panicking::default_hook::h63f9bf8161c5d325 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:325:9 [INFO] [stdout] 11: 0x63eaa08572ee - as core::ops::function::Fn>::call::hb8126f8384f98101 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/alloc/src/boxed.rs:1999:9 [INFO] [stdout] 12: 0x63eaa08572ee - test::test_main_with_exit_callback::{{closure}}::hae96ae0cd2f2ce70 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x63eaa0896f2f - as core::ops::function::Fn>::call::ha703f6686c81d0c6 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/alloc/src/boxed.rs:1999:9 [INFO] [stdout] 14: 0x63eaa0896f2f - std::panicking::panic_with_hook::h3173740e06bd0752 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:842:13 [INFO] [stdout] 15: 0x63eaa0896d8a - std::panicking::panic_handler::{{closure}}::hbac492c61eb56a87 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:707:13 [INFO] [stdout] 16: 0x63eaa0891e59 - std::sys::backtrace::__rust_end_short_backtrace::haa3eac3df9535320 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 17: 0x63eaa087a1ad - __rustc[de0091b922c53d7e]::rust_begin_unwind [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:698:5 [INFO] [stdout] 18: 0x63eaa08d0380 - core::panicking::panic_fmt::h5138da2ef87be35b [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/panicking.rs:75:14 [INFO] [stdout] 19: 0x63eaa082d68f - study_rust_example::generic_traits_lifetime::test_study::assert_test::h7c3a1b10cd2fcd2e [INFO] [stdout] at /opt/rustwide/workdir/src/generic_traits_lifetime/test_study.rs:22:5 [INFO] [stdout] 20: 0x63eaa082d6c7 - study_rust_example::generic_traits_lifetime::test_study::assert_test::{{closure}}::h65fea2db474e5fc6 [INFO] [stdout] at /opt/rustwide/workdir/src/generic_traits_lifetime/test_study.rs:18:17 [INFO] [stdout] 21: 0x63eaa082e116 - core::ops::function::FnOnce::call_once::hc7ed96b7bfa53433 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 22: 0x63eaa08570cb - core::ops::function::FnOnce::call_once::h8f50ae93d93b62b4 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 23: 0x63eaa08570cb - test::__rust_begin_short_backtrace::h447963718d05a644 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:663:18 [INFO] [stdout] 24: 0x63eaa086cd05 - test::run_test_in_process::{{closure}}::hf890ba4755ca86c0 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:686:74 [INFO] [stdout] 25: 0x63eaa086cd05 - as core::ops::function::FnOnce<()>>::call_once::h31e4b2860e583faa [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 26: 0x63eaa086cd05 - std::panicking::catch_unwind::do_call::hec7cdbbe797e2cab [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:590:40 [INFO] [stdout] 27: 0x63eaa086cd05 - std::panicking::catch_unwind::h24d3b93458b5ba67 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:553:19 [INFO] [stdout] 28: 0x63eaa086cd05 - std::panic::catch_unwind::h46eeec7cf9c9336c [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panic.rs:359:14 [INFO] [stdout] 29: 0x63eaa086cd05 - test::run_test_in_process::h290de6e559006104 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:686:27 [INFO] [stdout] 30: 0x63eaa086cd05 - test::run_test::{{closure}}::h26eeb2c5f7e9a995 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:607:43 [INFO] [stdout] 31: 0x63eaa0843504 - test::run_test::{{closure}}::h85af00882daabeaa [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/test/src/lib.rs:637:41 [INFO] [stdout] 32: 0x63eaa0843504 - std::sys::backtrace::__rust_begin_short_backtrace::h9d9305dda51fa5f2 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/backtrace.rs:158:18 [INFO] [stdout] 33: 0x63eaa0846eaa - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc6aada8b43f0527b [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 34: 0x63eaa0846eaa - as core::ops::function::FnOnce<()>>::call_once::ha89fe5505c1206f5 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 35: 0x63eaa0846eaa - std::panicking::catch_unwind::do_call::he3e0bef721d99583 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:590:40 [INFO] [stdout] 36: 0x63eaa0846eaa - std::panicking::catch_unwind::ha8241964d3d773cd [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panicking.rs:553:19 [INFO] [stdout] 37: 0x63eaa0846eaa - std::panic::catch_unwind::ha8554bc7696cae72 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/panic.rs:359:14 [INFO] [stdout] 38: 0x63eaa0846eaa - std::thread::Builder::spawn_unchecked_::{{closure}}::he06f1f62b4c90f8d [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 39: 0x63eaa0846eaa - core::ops::function::FnOnce::call_once{{vtable.shim}}::ha7fd20ecae19b9b9 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 40: 0x63eaa088d04f - as core::ops::function::FnOnce>::call_once::h43642ed9c40e0ab2 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 41: 0x63eaa088d04f - std::sys::thread::unix::Thread::new::thread_start::h38da0f633f090ce2 [INFO] [stdout] at /rustc/f8297e351a40c1439a467bbbb6879088047f50b3/library/std/src/sys/thread/unix.rs:126:17 [INFO] [stdout] 42: 0x7dab474d1aa4 - [INFO] [stdout] 43: 0x7dab4755ea64 - clone [INFO] [stdout] 44: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] generic_traits_lifetime::test_study::assert_test [INFO] [stdout] [INFO] [stdout] test result: FAILED. 6 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.10s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--lib` [INFO] running `Command { std: "docker" "inspect" "4199b915644a26093c2513fc9ada465a0567b57f14ef02126a3772a036aa9629", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4199b915644a26093c2513fc9ada465a0567b57f14ef02126a3772a036aa9629", kill_on_drop: false }` [INFO] [stdout] 4199b915644a26093c2513fc9ada465a0567b57f14ef02126a3772a036aa9629