[INFO] cloning repository https://github.com/SuanCaiYv/rust-learn-base [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SuanCaiYv/rust-learn-base" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSuanCaiYv%2Frust-learn-base", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSuanCaiYv%2Frust-learn-base'... 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[INFO] validating manifest of git repo https://github.com/SuanCaiYv/rust-learn-base on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/SuanCaiYv/rust-learn-base [INFO] finished tweaking git repo https://github.com/SuanCaiYv/rust-learn-base [INFO] tweaked toml for git repo https://github.com/SuanCaiYv/rust-learn-base written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/SuanCaiYv/rust-learn-base already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2bd32b0bee94e3c8d4ddee52c192de7a7b2c4830f07a9dac666698d630b5ec3a [INFO] running `Command { std: "docker" "start" "-a" "2bd32b0bee94e3c8d4ddee52c192de7a7b2c4830f07a9dac666698d630b5ec3a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2bd32b0bee94e3c8d4ddee52c192de7a7b2c4830f07a9dac666698d630b5ec3a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2bd32b0bee94e3c8d4ddee52c192de7a7b2c4830f07a9dac666698d630b5ec3a", kill_on_drop: false }` [INFO] [stdout] 2bd32b0bee94e3c8d4ddee52c192de7a7b2c4830f07a9dac666698d630b5ec3a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6d71eba63c99daad788d7eef9c3b10e3b4cc372d3c807efc2d9e72dcca2daef7 [INFO] running `Command { std: "docker" "start" "-a" "6d71eba63c99daad788d7eef9c3b10e3b4cc372d3c807efc2d9e72dcca2daef7", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.100 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.4 [INFO] [stderr] Checking learn1 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::io` [INFO] [stdout] --> src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use std::io; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Read`, `stdin` [INFO] [stdout] --> src/main.rs:13:15 [INFO] [stdout] | [INFO] [stdout] 13 | use std::io::{stdin, Read}; [INFO] [stdout] | ^^^^^ ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io` [INFO] [stdout] --> src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use std::io; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Read`, `stdin` [INFO] [stdout] --> src/main.rs:13:15 [INFO] [stdout] | [INFO] [stdout] 13 | use std::io::{stdin, Read}; [INFO] [stdout] | ^^^^^ ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `var1` [INFO] [stdout] --> src/base.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | let var1 = 10; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_var1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `var2` [INFO] [stdout] --> src/base.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let var2 :i64 = 20; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_var2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `var3` is assigned to, but never used [INFO] [stdout] --> src/base.rs:7:13 [INFO] [stdout] | [INFO] [stdout] 7 | let mut var3 = 15; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_var3` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `var3` is never read [INFO] [stdout] --> src/base.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | var3 = 25; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `var1` [INFO] [stdout] --> src/base.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let var1 = "str1"; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_var1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `var4` [INFO] [stdout] --> src/base.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let var4 = 1.0; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_var4` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `var5` [INFO] [stdout] --> src/base.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let var5 = true; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_var5` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `var6` [INFO] [stdout] --> src/base.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let var6 = '😊'; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_var6` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `tup1` [INFO] [stdout] --> src/base.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let tup1 = (1, 2, 3); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_tup1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `tup2` [INFO] [stdout] --> src/base.rs:20:9 [INFO] [stdout] | [INFO] [stdout] 20 | let tup2 = (1, 2.0, false); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_tup2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `arr1` [INFO] [stdout] --> src/base.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 22 | let arr1 = [1, 2, 3]; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_arr1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str` [INFO] [stdout] --> src/ownership.rs:2:23 [INFO] [stdout] | [INFO] [stdout] 2 | pub fn move_ownership(str : String) { [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/ownership.rs:13:28 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn reference_ownership(str : &String) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/vector.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let mut vec1 = vec![1, 2, 3]; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `var` [INFO] [stdout] --> src/base.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn var() { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `add` [INFO] [stdout] --> src/base.rs:25:8 [INFO] [stdout] | [INFO] [stdout] 25 | pub fn add(x :i32, y :i32) -> i32 { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `control` [INFO] [stdout] --> src/base.rs:32:8 [INFO] [stdout] | [INFO] [stdout] 32 | pub fn control() { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `move_ownership` [INFO] [stdout] --> src/ownership.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | pub fn move_ownership(str : String) { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `move_ownership_and_giveback` [INFO] [stdout] --> src/ownership.rs:7:8 [INFO] [stdout] | [INFO] [stdout] 7 | pub fn move_ownership_and_giveback(str : String) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `reference_ownership` [INFO] [stdout] --> src/ownership.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn reference_ownership(str : &String) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `reference_ownership_mut` [INFO] [stdout] --> src/ownership.rs:18:8 [INFO] [stdout] | [INFO] [stdout] 18 | pub fn reference_ownership_mut(str : &mut String) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `note_chap4` [INFO] [stdout] --> src/ownership.rs:24:8 [INFO] [stdout] | [INFO] [stdout] 24 | pub fn note_chap4() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `sub_str` [INFO] [stdout] --> src/ownership.rs:30:8 [INFO] [stdout] | [INFO] [stdout] 30 | pub fn sub_str(str : &String, mut from : usize, mut to : usize) -> &str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Phone` [INFO] [stdout] --> src/struct0.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | pub struct Phone { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `display` [INFO] [stdout] --> src/struct0.rs:11:12 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn display(&self) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `default` [INFO] [stdout] --> src/struct0.rs:16:12 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn default() -> Phone { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `PhoneTuple` [INFO] [stdout] --> src/struct0.rs:27:12 [INFO] [stdout] | [INFO] [stdout] 27 | pub struct PhoneTuple(pub String, pub String, pub String, pub u64); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `build_phone` [INFO] [stdout] --> src/struct0.rs:33:8 [INFO] [stdout] | [INFO] [stdout] 33 | pub fn build_phone(factory0: String, series0: String, seq_num0: String, id0: u64) -> Phone { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `build_phone_tuple` [INFO] [stdout] --> src/struct0.rs:43:8 [INFO] [stdout] | [INFO] [stdout] 43 | pub fn build_phone_tuple(factory0: String, series0: String, seq_num0: String, id0: u64) -> PhoneTuple { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `Company` [INFO] [stdout] --> src/enum_match.rs:1:10 [INFO] [stdout] | [INFO] [stdout] 1 | pub enum Company { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `MsgStatus` [INFO] [stdout] --> src/enum_match.rs:10:10 [INFO] [stdout] | [INFO] [stdout] 10 | pub enum MsgStatus { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `print` [INFO] [stdout] --> src/enum_match.rs:21:12 [INFO] [stdout] | [INFO] [stdout] 21 | pub fn print(&self) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value` [INFO] [stdout] --> src/enum_match.rs:26:12 [INFO] [stdout] | [INFO] [stdout] 26 | pub fn value(self) -> String { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `set_phone` [INFO] [stdout] --> src/enum_match.rs:38:8 [INFO] [stdout] | [INFO] [stdout] 38 | pub fn set_phone() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `var1` [INFO] [stdout] --> src/base.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | let var1 = 10; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_var1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `var2` [INFO] [stdout] --> src/base.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let var2 :i64 = 20; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_var2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `var3` is assigned to, but never used [INFO] [stdout] --> src/base.rs:7:13 [INFO] [stdout] | [INFO] [stdout] 7 | let mut var3 = 15; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_var3` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `var3` is never read [INFO] [stdout] --> src/base.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | var3 = 25; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `var1` [INFO] [stdout] --> src/base.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let var1 = "str1"; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_var1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `var4` [INFO] [stdout] --> src/base.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let var4 = 1.0; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_var4` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `increment` [INFO] [stdout] --> src/enum_match.rs:43:8 [INFO] [stdout] | [INFO] [stdout] 43 | pub fn increment(op: Option) -> i32 { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `var5` [INFO] [stdout] --> src/base.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let var5 = true; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_var5` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `num_fmt` [INFO] [stdout] --> src/enum_match.rs:51:8 [INFO] [stdout] | [INFO] [stdout] 51 | pub fn num_fmt(val: i32) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `var6` [INFO] [stdout] --> src/base.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let var6 = '😊'; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_var6` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `only_one` [INFO] [stdout] --> src/enum_match.rs:67:8 [INFO] [stdout] | [INFO] [stdout] 67 | pub fn only_one(op: Option) { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `tup1` [INFO] [stdout] --> src/base.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let tup1 = (1, 2, 3); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_tup1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `tup2` [INFO] [stdout] --> src/base.rs:20:9 [INFO] [stdout] | [INFO] [stdout] 20 | let tup2 = (1, 2.0, false); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_tup2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `chap1_3` [INFO] [stdout] --> src/main.rs:19:4 [INFO] [stdout] | [INFO] [stdout] 19 | fn chap1_3() { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `arr1` [INFO] [stdout] --> src/base.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 22 | let arr1 = [1, 2, 3]; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_arr1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str` [INFO] [stdout] --> src/ownership.rs:2:23 [INFO] [stdout] | [INFO] [stdout] 2 | pub fn move_ownership(str : String) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `chap4` [INFO] [stdout] --> src/main.rs:25:4 [INFO] [stdout] | [INFO] [stdout] 25 | fn chap4() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str` [INFO] [stdout] --> src/ownership.rs:13:28 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn reference_ownership(str : &String) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `chap5` [INFO] [stdout] --> src/main.rs:42:4 [INFO] [stdout] | [INFO] [stdout] 42 | fn chap5() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `chap6` [INFO] [stdout] --> src/main.rs:51:4 [INFO] [stdout] | [INFO] [stdout] 51 | fn chap6() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/vector.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let mut vec1 = vec![1, 2, 3]; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `var` [INFO] [stdout] --> src/base.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn var() { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 43 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `add` [INFO] [stdout] --> src/base.rs:25:8 [INFO] [stdout] | [INFO] [stdout] 25 | pub fn add(x :i32, y :i32) -> i32 { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `control` [INFO] [stdout] --> src/base.rs:32:8 [INFO] [stdout] | [INFO] [stdout] 32 | pub fn control() { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `move_ownership` [INFO] [stdout] --> src/ownership.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | pub fn move_ownership(str : String) { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `move_ownership_and_giveback` [INFO] [stdout] --> src/ownership.rs:7:8 [INFO] [stdout] | [INFO] [stdout] 7 | pub fn move_ownership_and_giveback(str : String) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `reference_ownership` [INFO] [stdout] --> src/ownership.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn reference_ownership(str : &String) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `reference_ownership_mut` [INFO] [stdout] --> src/ownership.rs:18:8 [INFO] [stdout] | [INFO] [stdout] 18 | pub fn reference_ownership_mut(str : &mut String) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `note_chap4` [INFO] [stdout] --> src/ownership.rs:24:8 [INFO] [stdout] | [INFO] [stdout] 24 | pub fn note_chap4() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `sub_str` [INFO] [stdout] --> src/ownership.rs:30:8 [INFO] [stdout] | [INFO] [stdout] 30 | pub fn sub_str(str : &String, mut from : usize, mut to : usize) -> &str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Phone` [INFO] [stdout] --> src/struct0.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | pub struct Phone { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `display` [INFO] [stdout] --> src/struct0.rs:11:12 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn display(&self) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `default` [INFO] [stdout] --> src/struct0.rs:16:12 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn default() -> Phone { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `PhoneTuple` [INFO] [stdout] --> src/struct0.rs:27:12 [INFO] [stdout] | [INFO] [stdout] 27 | pub struct PhoneTuple(pub String, pub String, pub String, pub u64); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `build_phone` [INFO] [stdout] --> src/struct0.rs:33:8 [INFO] [stdout] | [INFO] [stdout] 33 | pub fn build_phone(factory0: String, series0: String, seq_num0: String, id0: u64) -> Phone { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `build_phone_tuple` [INFO] [stdout] --> src/struct0.rs:43:8 [INFO] [stdout] | [INFO] [stdout] 43 | pub fn build_phone_tuple(factory0: String, series0: String, seq_num0: String, id0: u64) -> PhoneTuple { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `Company` [INFO] [stdout] --> src/enum_match.rs:1:10 [INFO] [stdout] | [INFO] [stdout] 1 | pub enum Company { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `MsgStatus` [INFO] [stdout] --> src/enum_match.rs:10:10 [INFO] [stdout] | [INFO] [stdout] 10 | pub enum MsgStatus { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `print` [INFO] [stdout] --> src/enum_match.rs:21:12 [INFO] [stdout] | [INFO] [stdout] 21 | pub fn print(&self) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value` [INFO] [stdout] --> src/enum_match.rs:26:12 [INFO] [stdout] | [INFO] [stdout] 26 | pub fn value(self) -> String { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `set_phone` [INFO] [stdout] --> src/enum_match.rs:38:8 [INFO] [stdout] | [INFO] [stdout] 38 | pub fn set_phone() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `increment` [INFO] [stdout] --> src/enum_match.rs:43:8 [INFO] [stdout] | [INFO] [stdout] 43 | pub fn increment(op: Option) -> i32 { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `num_fmt` [INFO] [stdout] --> src/enum_match.rs:51:8 [INFO] [stdout] | [INFO] [stdout] 51 | pub fn num_fmt(val: i32) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `only_one` [INFO] [stdout] --> src/enum_match.rs:67:8 [INFO] [stdout] | [INFO] [stdout] 67 | pub fn only_one(op: Option) { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `chap1_3` [INFO] [stdout] --> src/main.rs:19:4 [INFO] [stdout] | [INFO] [stdout] 19 | fn chap1_3() { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `chap4` [INFO] [stdout] --> src/main.rs:25:4 [INFO] [stdout] | [INFO] [stdout] 25 | fn chap4() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `chap5` [INFO] [stdout] --> src/main.rs:42:4 [INFO] [stdout] | [INFO] [stdout] 42 | fn chap5() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `chap6` [INFO] [stdout] --> src/main.rs:51:4 [INFO] [stdout] | [INFO] [stdout] 51 | fn chap6() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 43 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.75s [INFO] running `Command { std: "docker" "inspect" "6d71eba63c99daad788d7eef9c3b10e3b4cc372d3c807efc2d9e72dcca2daef7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6d71eba63c99daad788d7eef9c3b10e3b4cc372d3c807efc2d9e72dcca2daef7", kill_on_drop: false }` [INFO] [stdout] 6d71eba63c99daad788d7eef9c3b10e3b4cc372d3c807efc2d9e72dcca2daef7