[INFO] cloning repository https://github.com/yuya373/trpl [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yuya373/trpl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuya373%2Ftrpl", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuya373%2Ftrpl'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a44a0c09f12646a37cdfc1d60dcf404910d06f75 [INFO] testing yuya373/trpl against 1.60.0 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuya373%2Ftrpl" "/workspace/builds/worker-70/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-70/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/yuya373/trpl on toolchain 1.60.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/yuya373/trpl [INFO] finished tweaking git repo https://github.com/yuya373/trpl [INFO] tweaked toml for git repo https://github.com/yuya373/trpl written to /workspace/builds/worker-70/source/Cargo.toml [INFO] crate git repo https://github.com/yuya373/trpl already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4cce2bc5a1de75d8e1edbfddaf5595f79d21a290927975dcc3e019c5c75944b3 [INFO] running `Command { std: "docker" "start" "-a" "4cce2bc5a1de75d8e1edbfddaf5595f79d21a290927975dcc3e019c5c75944b3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4cce2bc5a1de75d8e1edbfddaf5595f79d21a290927975dcc3e019c5c75944b3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4cce2bc5a1de75d8e1edbfddaf5595f79d21a290927975dcc3e019c5c75944b3", kill_on_drop: false }` [INFO] [stdout] 4cce2bc5a1de75d8e1edbfddaf5595f79d21a290927975dcc3e019c5c75944b3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 765b1d5f0960d9ea4f920d9ce0baf68c3e5a84af9593fab519004207e102bfdd [INFO] running `Command { std: "docker" "start" "-a" "765b1d5f0960d9ea4f920d9ce0baf68c3e5a84af9593fab519004207e102bfdd", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling chapter7 v0.1.0 (/opt/rustwide/workdir/chapter7) [INFO] [stderr] Compiling chapter8 v0.1.0 (/opt/rustwide/workdir/chapter8) [INFO] [stderr] Compiling chapter5 v0.1.0 (/opt/rustwide/workdir/chapter5) [INFO] [stderr] Compiling chapter9 v0.1.0 (/opt/rustwide/workdir/chapter9) [INFO] [stderr] Compiling chapter4 v0.1.0 (/opt/rustwide/workdir/chapter4) [INFO] [stderr] Compiling chapter10 v0.1.0 (/opt/rustwide/workdir/chapter10) [INFO] [stderr] Compiling chapter6 v0.1.0 (/opt/rustwide/workdir/chapter6) [INFO] [stdout] warning: field is never read: `part` [INFO] [stdout] --> chapter10/src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | part: &'a str, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `announce_and_return_part` [INFO] [stdout] --> chapter10/src/main.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 15 | fn announce_and_return_part(&self, announcement: &str) -> &str { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s1` [INFO] [stdout] --> chapter4/src/main.rs:75:9 [INFO] [stdout] | [INFO] [stdout] 75 | let s1 = &mut s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_u8_value` [INFO] [stdout] --> chapter6/src/main.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | let some_u8_value = Some(0u8); [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_u8_value` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r1` [INFO] [stdout] --> chapter4/src/main.rs:86:13 [INFO] [stdout] | [INFO] [stdout] 86 | let r1 = &mut s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r2` [INFO] [stdout] --> chapter4/src/main.rs:88:9 [INFO] [stdout] | [INFO] [stdout] 88 | let r2 = &mut s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r1` [INFO] [stdout] --> chapter4/src/main.rs:92:9 [INFO] [stdout] | [INFO] [stdout] 92 | let r1 = &s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r2` [INFO] [stdout] --> chapter4/src/main.rs:94:9 [INFO] [stdout] | [INFO] [stdout] 94 | let r2 = &s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> chapter4/src/main.rs:90:9 [INFO] [stdout] | [INFO] [stdout] 90 | let mut s = String::from("hello"); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> chapter4/src/main.rs:108:9 [INFO] [stdout] | [INFO] [stdout] 108 | let mut s = String::from("hello world"); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `no_dangle` [INFO] [stdout] --> chapter4/src/main.rs:168:4 [INFO] [stdout] | [INFO] [stdout] 168 | fn no_dangle() -> String { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `x` [INFO] [stdout] --> chapter6/src/main.rs:47:12 [INFO] [stdout] | [INFO] [stdout] 47 | Move { x: i32, y: i32 }, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> chapter6/src/main.rs:43:10 [INFO] [stdout] | [INFO] [stdout] 43 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `user2` [INFO] [stdout] --> chapter5/src/main.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let user2 = User { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `y` [INFO] [stdout] --> chapter6/src/main.rs:47:20 [INFO] [stdout] | [INFO] [stdout] 47 | Move { x: i32, y: i32 }, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> chapter6/src/main.rs:43:10 [INFO] [stdout] | [INFO] [stdout] 43 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `ChangeColor` [INFO] [stdout] --> chapter6/src/main.rs:49:5 [INFO] [stdout] | [INFO] [stdout] 49 | ChangeColor(i32, i32, i32), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> chapter6/src/main.rs:43:10 [INFO] [stdout] | [INFO] [stdout] 43 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Alabama` [INFO] [stdout] --> chapter6/src/main.rs:59:5 [INFO] [stdout] | [INFO] [stdout] 59 | Alabama, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> chapter6/src/main.rs:57:10 [INFO] [stdout] | [INFO] [stdout] 57 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Nickel` [INFO] [stdout] --> chapter6/src/main.rs:65:5 [INFO] [stdout] | [INFO] [stdout] 65 | Nickel, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Dime` [INFO] [stdout] --> chapter6/src/main.rs:66:5 [INFO] [stdout] | [INFO] [stdout] 66 | Dime, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `black` [INFO] [stdout] --> chapter5/src/main.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let black = Color(0, 0, 0); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_black` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `sign_in_count` [INFO] [stdout] --> chapter5/src/main.rs:53:5 [INFO] [stdout] | [INFO] [stdout] 53 | sign_in_count: u64, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `active` [INFO] [stdout] --> chapter5/src/main.rs:54:5 [INFO] [stdout] | [INFO] [stdout] 54 | active: bool, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> chapter5/src/main.rs:67:8 [INFO] [stdout] | [INFO] [stdout] 67 | fn new(email: String, username: String) -> User { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `square` [INFO] [stdout] --> chapter5/src/main.rs:97:8 [INFO] [stdout] | [INFO] [stdout] 97 | fn square(size: u32) -> Rectangle { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `widen` [INFO] [stdout] --> chapter5/src/main.rs:105:8 [INFO] [stdout] | [INFO] [stdout] 105 | fn widen(&mut self, n: u32) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `takes_ownership` [INFO] [stdout] --> chapter5/src/main.rs:109:8 [INFO] [stdout] | [INFO] [stdout] 109 | fn takes_ownership(self) -> Rectangle { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `transform` [INFO] [stdout] --> chapter5/src/main.rs:113:8 [INFO] [stdout] | [INFO] [stdout] 113 | fn transform(self, w: u32, h: u32) -> Rectangle { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> chapter8/src/main.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | let mut v = vec![1, 2, 3, 4, 5]; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> chapter8/src/main.rs:134:13 [INFO] [stdout] | [INFO] [stdout] 134 | let mut count = map.entry(i).or_insert(0); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> chapter8/src/main.rs:206:17 [INFO] [stdout] | [INFO] [stdout] 206 | &members.sort(); [INFO] [stdout] | ^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 206 | let _ = &members.sort(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> chapter8/src/main.rs:224:9 [INFO] [stdout] | [INFO] [stdout] 224 | / &all_members.sort_by(|&a, &b| { [INFO] [stdout] 225 | | let (name1, _) = a; [INFO] [stdout] 226 | | let (name2, _) = b; [INFO] [stdout] 227 | | return name1.cmp(name2); [INFO] [stdout] 228 | | }); [INFO] [stdout] | |__________^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 224 | let _ = &all_members.sort_by(|&a, &b| { [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.82s [INFO] running `Command { std: "docker" "inspect" "765b1d5f0960d9ea4f920d9ce0baf68c3e5a84af9593fab519004207e102bfdd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "765b1d5f0960d9ea4f920d9ce0baf68c3e5a84af9593fab519004207e102bfdd", kill_on_drop: false }` [INFO] [stdout] 765b1d5f0960d9ea4f920d9ce0baf68c3e5a84af9593fab519004207e102bfdd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1efcbc4c55e15e65c2a255091f241b38764d64dc6ce12a4a0a482e2205aa66d9 [INFO] running `Command { std: "docker" "start" "-a" "1efcbc4c55e15e65c2a255091f241b38764d64dc6ce12a4a0a482e2205aa66d9", kill_on_drop: false }` [INFO] [stderr] Compiling chapter5 v0.1.0 (/opt/rustwide/workdir/chapter5) [INFO] [stderr] Compiling chapter10 v0.1.0 (/opt/rustwide/workdir/chapter10) [INFO] [stderr] Compiling chapter9 v0.1.0 (/opt/rustwide/workdir/chapter9) [INFO] [stderr] Compiling chapter8 v0.1.0 (/opt/rustwide/workdir/chapter8) [INFO] [stderr] Compiling chapter4 v0.1.0 (/opt/rustwide/workdir/chapter4) [INFO] [stderr] Compiling chapter6 v0.1.0 (/opt/rustwide/workdir/chapter6) [INFO] [stderr] Compiling chapter7 v0.1.0 (/opt/rustwide/workdir/chapter7) [INFO] [stdout] warning: field is never read: `part` [INFO] [stdout] --> chapter10/src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | part: &'a str, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `announce_and_return_part` [INFO] [stdout] --> chapter10/src/main.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 15 | fn announce_and_return_part(&self, announcement: &str) -> &str { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s1` [INFO] [stdout] --> chapter4/src/main.rs:75:9 [INFO] [stdout] | [INFO] [stdout] 75 | let s1 = &mut s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `user2` [INFO] [stdout] --> chapter5/src/main.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let user2 = User { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r1` [INFO] [stdout] --> chapter4/src/main.rs:86:13 [INFO] [stdout] | [INFO] [stdout] 86 | let r1 = &mut s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r2` [INFO] [stdout] --> chapter4/src/main.rs:88:9 [INFO] [stdout] | [INFO] [stdout] 88 | let r2 = &mut s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `black` [INFO] [stdout] --> chapter5/src/main.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let black = Color(0, 0, 0); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_black` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r1` [INFO] [stdout] --> chapter4/src/main.rs:92:9 [INFO] [stdout] | [INFO] [stdout] 92 | let r1 = &s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r2` [INFO] [stdout] --> chapter4/src/main.rs:94:9 [INFO] [stdout] | [INFO] [stdout] 94 | let r2 = &s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> chapter4/src/main.rs:90:9 [INFO] [stdout] | [INFO] [stdout] 90 | let mut s = String::from("hello"); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> chapter4/src/main.rs:108:9 [INFO] [stdout] | [INFO] [stdout] 108 | let mut s = String::from("hello world"); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `sign_in_count` [INFO] [stdout] --> chapter5/src/main.rs:53:5 [INFO] [stdout] | [INFO] [stdout] 53 | sign_in_count: u64, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `no_dangle` [INFO] [stdout] --> chapter4/src/main.rs:168:4 [INFO] [stdout] | [INFO] [stdout] 168 | fn no_dangle() -> String { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `active` [INFO] [stdout] --> chapter5/src/main.rs:54:5 [INFO] [stdout] | [INFO] [stdout] 54 | active: bool, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> chapter5/src/main.rs:67:8 [INFO] [stdout] | [INFO] [stdout] 67 | fn new(email: String, username: String) -> User { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `square` [INFO] [stdout] --> chapter5/src/main.rs:97:8 [INFO] [stdout] | [INFO] [stdout] 97 | fn square(size: u32) -> Rectangle { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `widen` [INFO] [stdout] --> chapter5/src/main.rs:105:8 [INFO] [stdout] | [INFO] [stdout] 105 | fn widen(&mut self, n: u32) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `takes_ownership` [INFO] [stdout] --> chapter5/src/main.rs:109:8 [INFO] [stdout] | [INFO] [stdout] 109 | fn takes_ownership(self) -> Rectangle { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `transform` [INFO] [stdout] --> chapter5/src/main.rs:113:8 [INFO] [stdout] | [INFO] [stdout] 113 | fn transform(self, w: u32, h: u32) -> Rectangle { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> chapter8/src/main.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | let mut v = vec![1, 2, 3, 4, 5]; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> chapter8/src/main.rs:134:13 [INFO] [stdout] | [INFO] [stdout] 134 | let mut count = map.entry(i).or_insert(0); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> chapter8/src/main.rs:206:17 [INFO] [stdout] | [INFO] [stdout] 206 | &members.sort(); [INFO] [stdout] | ^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 206 | let _ = &members.sort(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> chapter8/src/main.rs:224:9 [INFO] [stdout] | [INFO] [stdout] 224 | / &all_members.sort_by(|&a, &b| { [INFO] [stdout] 225 | | let (name1, _) = a; [INFO] [stdout] 226 | | let (name2, _) = b; [INFO] [stdout] 227 | | return name1.cmp(name2); [INFO] [stdout] 228 | | }); [INFO] [stdout] | |__________^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 224 | let _ = &all_members.sort_by(|&a, &b| { [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_u8_value` [INFO] [stdout] --> chapter6/src/main.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | let some_u8_value = Some(0u8); [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_u8_value` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `x` [INFO] [stdout] --> chapter6/src/main.rs:47:12 [INFO] [stdout] | [INFO] [stdout] 47 | Move { x: i32, y: i32 }, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> chapter6/src/main.rs:43:10 [INFO] [stdout] | [INFO] [stdout] 43 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `y` [INFO] [stdout] --> chapter6/src/main.rs:47:20 [INFO] [stdout] | [INFO] [stdout] 47 | Move { x: i32, y: i32 }, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> chapter6/src/main.rs:43:10 [INFO] [stdout] | [INFO] [stdout] 43 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `ChangeColor` [INFO] [stdout] --> chapter6/src/main.rs:49:5 [INFO] [stdout] | [INFO] [stdout] 49 | ChangeColor(i32, i32, i32), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> chapter6/src/main.rs:43:10 [INFO] [stdout] | [INFO] [stdout] 43 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Alabama` [INFO] [stdout] --> chapter6/src/main.rs:59:5 [INFO] [stdout] | [INFO] [stdout] 59 | Alabama, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> chapter6/src/main.rs:57:10 [INFO] [stdout] | [INFO] [stdout] 57 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Nickel` [INFO] [stdout] --> chapter6/src/main.rs:65:5 [INFO] [stdout] | [INFO] [stdout] 65 | Nickel, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Dime` [INFO] [stdout] --> chapter6/src/main.rs:66:5 [INFO] [stdout] | [INFO] [stdout] 66 | Dime, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.49s [INFO] running `Command { std: "docker" "inspect" "1efcbc4c55e15e65c2a255091f241b38764d64dc6ce12a4a0a482e2205aa66d9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1efcbc4c55e15e65c2a255091f241b38764d64dc6ce12a4a0a482e2205aa66d9", kill_on_drop: false }` [INFO] [stdout] 1efcbc4c55e15e65c2a255091f241b38764d64dc6ce12a4a0a482e2205aa66d9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 71b1165b45e82301755336fe72ffb0094fba163180bfd904fcb932ee689cea39 [INFO] running `Command { std: "docker" "start" "-a" "71b1165b45e82301755336fe72ffb0094fba163180bfd904fcb932ee689cea39", kill_on_drop: false }` [INFO] [stderr] warning: unused variable: `s1` [INFO] [stderr] --> chapter4/src/main.rs:75:9 [INFO] [stderr] | [INFO] [stderr] 75 | let s1 = &mut s; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r1` [INFO] [stderr] --> chapter4/src/main.rs:86:13 [INFO] [stderr] | [INFO] [stderr] 86 | let r1 = &mut s; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_r1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r2` [INFO] [stderr] --> chapter4/src/main.rs:88:9 [INFO] [stderr] | [INFO] [stderr] 88 | let r2 = &mut s; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_r2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r1` [INFO] [stderr] --> chapter4/src/main.rs:92:9 [INFO] [stderr] | [INFO] [stderr] 92 | let r1 = &s; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_r1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r2` [INFO] [stderr] --> chapter4/src/main.rs:94:9 [INFO] [stderr] | [INFO] [stderr] 94 | let r2 = &s; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_r2` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> chapter4/src/main.rs:90:9 [INFO] [stderr] | [INFO] [stderr] 90 | let mut s = String::from("hello"); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> chapter4/src/main.rs:108:9 [INFO] [stderr] | [INFO] [stderr] 108 | let mut s = String::from("hello world"); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `no_dangle` [INFO] [stderr] --> chapter4/src/main.rs:168:4 [INFO] [stderr] | [INFO] [stderr] 168 | fn no_dangle() -> String { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `chapter4` (bin "chapter4" test) generated 8 warnings [INFO] [stderr] warning: field is never read: `part` [INFO] [stderr] --> chapter10/src/main.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | part: &'a str, [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `announce_and_return_part` [INFO] [stderr] --> chapter10/src/main.rs:15:8 [INFO] [stderr] | [INFO] [stderr] 15 | fn announce_and_return_part(&self, announcement: &str) -> &str { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `some_u8_value` [INFO] [stderr] --> chapter6/src/main.rs:29:9 [INFO] [stderr] | [INFO] [stderr] 29 | let some_u8_value = Some(0u8); [INFO] [stderr] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_u8_value` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never read: `x` [INFO] [stderr] --> chapter6/src/main.rs:47:12 [INFO] [stderr] | [INFO] [stderr] 47 | Move { x: i32, y: i32 }, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> chapter6/src/main.rs:43:10 [INFO] [stderr] | [INFO] [stderr] 43 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: field is never read: `y` [INFO] [stderr] --> chapter6/src/main.rs:47:20 [INFO] [stderr] | [INFO] [stderr] 47 | Move { x: i32, y: i32 }, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> chapter6/src/main.rs:43:10 [INFO] [stderr] | [INFO] [stderr] 43 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `ChangeColor` [INFO] [stderr] --> chapter6/src/main.rs:49:5 [INFO] [stderr] | [INFO] [stderr] 49 | ChangeColor(i32, i32, i32), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> chapter6/src/main.rs:43:10 [INFO] [stderr] | [INFO] [stderr] 43 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Alabama` [INFO] [stderr] --> chapter6/src/main.rs:59:5 [INFO] [stderr] | [INFO] [stderr] 59 | Alabama, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> chapter6/src/main.rs:57:10 [INFO] [stderr] | [INFO] [stderr] 57 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Nickel` [INFO] [stderr] --> chapter6/src/main.rs:65:5 [INFO] [stderr] | [INFO] [stderr] 65 | Nickel, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Dime` [INFO] [stderr] --> chapter6/src/main.rs:66:5 [INFO] [stderr] | [INFO] [stderr] 66 | Dime, [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> chapter8/src/main.rs:26:9 [INFO] [stderr] | [INFO] [stderr] 26 | let mut v = vec![1, 2, 3, 4, 5]; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> chapter8/src/main.rs:134:13 [INFO] [stderr] | [INFO] [stderr] 134 | let mut count = map.entry(i).or_insert(0); [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> chapter8/src/main.rs:206:17 [INFO] [stderr] | [INFO] [stderr] 206 | &members.sort(); [INFO] [stderr] | ^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 206 | let _ = &members.sort(); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> chapter8/src/main.rs:224:9 [INFO] [stderr] | [INFO] [stderr] 224 | / &all_members.sort_by(|&a, &b| { [INFO] [stderr] 225 | | let (name1, _) = a; [INFO] [stderr] 226 | | let (name2, _) = b; [INFO] [stderr] 227 | | return name1.cmp(name2); [INFO] [stderr] 228 | | }); [INFO] [stderr] | |__________^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 224 | let _ = &all_members.sort_by(|&a, &b| { [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `user2` [INFO] [stderr] --> chapter5/src/main.rs:12:9 [INFO] [stderr] | [INFO] [stderr] 12 | let user2 = User { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `black` [INFO] [stderr] --> chapter5/src/main.rs:21:9 [INFO] [stderr] | [INFO] [stderr] 21 | let black = Color(0, 0, 0); [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_black` [INFO] [stderr] [INFO] [stderr] warning: field is never read: `sign_in_count` [INFO] [stderr] --> chapter5/src/main.rs:53:5 [INFO] [stderr] | [INFO] [stderr] 53 | sign_in_count: u64, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never read: `active` [INFO] [stderr] --> chapter5/src/main.rs:54:5 [INFO] [stderr] | [INFO] [stderr] 54 | active: bool, [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `new` [INFO] [stderr] --> chapter5/src/main.rs:67:8 [INFO] [stderr] | [INFO] [stderr] 67 | fn new(email: String, username: String) -> User { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `square` [INFO] [stderr] --> chapter5/src/main.rs:97:8 [INFO] [stderr] | [INFO] [stderr] 97 | fn square(size: u32) -> Rectangle { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `widen` [INFO] [stderr] --> chapter5/src/main.rs:105:8 [INFO] [stderr] | [INFO] [stderr] 105 | fn widen(&mut self, n: u32) { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `takes_ownership` [INFO] [stderr] --> chapter5/src/main.rs:109:8 [INFO] [stderr] | [INFO] [stderr] 109 | fn takes_ownership(self) -> Rectangle { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `transform` [INFO] [stderr] --> chapter5/src/main.rs:113:8 [INFO] [stderr] | [INFO] [stderr] 113 | fn transform(self, w: u32, h: u32) -> Rectangle { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `chapter10` (bin "chapter10" test) generated 2 warnings [INFO] [stderr] warning: `chapter6` (bin "chapter6" test) generated 7 warnings [INFO] [stderr] warning: `chapter8` (bin "chapter8" test) generated 4 warnings [INFO] [stderr] warning: `chapter5` (bin "chapter5" test) generated 9 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.08s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/chapter10-e91f534bb4ca865b) [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/chapter4-b81b21e75fad7ae6) [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/chapter5-76863edbba37907e) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/chapter6-10bd5d23d3890e9a) [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/chapter7-1f30379c4309ffda) [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test tests::it_works ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/chapter7-77215d9ddd9d3868) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/chapter8-f781e7700b279c9f) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/chapter9-a942ba8e171ef3fc) [INFO] [stdout] [INFO] [stderr] Doc-tests chapter7 [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "71b1165b45e82301755336fe72ffb0094fba163180bfd904fcb932ee689cea39", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "71b1165b45e82301755336fe72ffb0094fba163180bfd904fcb932ee689cea39", kill_on_drop: false }` [INFO] [stdout] 71b1165b45e82301755336fe72ffb0094fba163180bfd904fcb932ee689cea39