[INFO] cloning repository https://github.com/wa7sa34cx/rust-book-repeat [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wa7sa34cx/rust-book-repeat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwa7sa34cx%2Frust-book-repeat", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwa7sa34cx%2Frust-book-repeat'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] d4f94376d51b25fa8649668a6ae201b0c8b900f1 [INFO] testing wa7sa34cx/rust-book-repeat against 1.60.0 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwa7sa34cx%2Frust-book-repeat" "/workspace/builds/worker-18/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-18/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/wa7sa34cx/rust-book-repeat 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/wa7sa34cx/rust-book-repeat [INFO] finished tweaking git repo https://github.com/wa7sa34cx/rust-book-repeat [INFO] tweaked toml for git repo https://github.com/wa7sa34cx/rust-book-repeat written to /workspace/builds/worker-18/source/Cargo.toml [INFO] crate git repo https://github.com/wa7sa34cx/rust-book-repeat 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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] 5d2a0a1909aa3444862f79e8fdab74de09c4109cb97cd80fedddbd5728fa2b22 [INFO] running `Command { std: "docker" "start" "-a" "5d2a0a1909aa3444862f79e8fdab74de09c4109cb97cd80fedddbd5728fa2b22", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5d2a0a1909aa3444862f79e8fdab74de09c4109cb97cd80fedddbd5728fa2b22", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5d2a0a1909aa3444862f79e8fdab74de09c4109cb97cd80fedddbd5728fa2b22", kill_on_drop: false }` [INFO] [stdout] 5d2a0a1909aa3444862f79e8fdab74de09c4109cb97cd80fedddbd5728fa2b22 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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] b0d6a2ea9ae44d13868b419c97ffe5c35168e74a1418091d26628fdda43f51cb [INFO] running `Command { std: "docker" "start" "-a" "b0d6a2ea9ae44d13868b419c97ffe5c35168e74a1418091d26628fdda43f51cb", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.97 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling rust-book-repeat v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `s2` [INFO] [stdout] --> src/ch04_01_ownership/mod.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let s2 = s1; // value MOVED here [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `black` [INFO] [stdout] --> src/ch05_structs/mod.rs:43:9 [INFO] [stdout] | [INFO] [stdout] 43 | 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: `origin` [INFO] [stdout] --> src/ch05_structs/mod.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | let origin = Point(0, 0, 0); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `four` [INFO] [stdout] --> src/ch06_enums/mod.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let four = IpAddrKind::V4; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_four` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `six` [INFO] [stdout] --> src/ch06_enums/mod.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | let six = IpAddrKind::V6; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_six` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/ch06_enums/mod.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let home = IpAddr::V4(127, 0, 0, 1); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/ch06_enums/mod.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let loopback = IpAddr::V6(String::from("::1")); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_number` [INFO] [stdout] --> src/ch06_enums/mod.rs:27:9 [INFO] [stdout] | [INFO] [stdout] 27 | 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: `absent_number` [INFO] [stdout] --> src/ch06_enums/mod.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 28 | let absent_number: Option = None; [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_absent_number` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `count` is assigned to, but never used [INFO] [stdout] --> src/ch06_enums/mod.rs:64:13 [INFO] [stdout] | [INFO] [stdout] 64 | let mut count = 0; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_count` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `count` is never read [INFO] [stdout] --> src/ch06_enums/mod.rs:70:9 [INFO] [stdout] | [INFO] [stdout] 70 | count += 1; [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: `integer` [INFO] [stdout] --> src/ch10_01_generics/mod.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let integer = Point { x: 5, y: 10 }; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/ch15_04_rc/mod.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let b = Cons(3, Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/ch15_04_rc/mod.rs:17:13 [INFO] [stdout] | [INFO] [stdout] 17 | let c = Cons(4, Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/ch19_03_adv_types/mod.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let f: Thunk = Box::new(|| println!("hi")); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `text_length` [INFO] [stdout] --> src/options/mod.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | let text_length: Option = text.as_ref().map(|s| s.len()); [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_text_length` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/options/mod.rs:42:9 [INFO] [stdout] | [INFO] [stdout] 42 | let x: Option<&str> = None; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/vectors/mod.rs:1010:47 [INFO] [stdout] | [INFO] [stdout] 1010 | assert_eq!(s.binary_search_by_key(&13, |&(a, b)| b), Ok(9)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/vectors/mod.rs:1011:46 [INFO] [stdout] | [INFO] [stdout] 1011 | assert_eq!(s.binary_search_by_key(&4, |&(a, b)| b), Err(7)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/vectors/mod.rs:1012:48 [INFO] [stdout] | [INFO] [stdout] 1012 | assert_eq!(s.binary_search_by_key(&100, |&(a, b)| b), Err(13)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/vectors/mod.rs:1013:43 [INFO] [stdout] | [INFO] [stdout] 1013 | let r = s.binary_search_by_key(&1, |&(a, b)| b); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/iterator/mod.rs:73:9 [INFO] [stdout] | [INFO] [stdout] 73 | let mut iter = a1.iter().chain(a2.iter()); [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: 22 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.05s [INFO] running `Command { std: "docker" "inspect" "b0d6a2ea9ae44d13868b419c97ffe5c35168e74a1418091d26628fdda43f51cb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b0d6a2ea9ae44d13868b419c97ffe5c35168e74a1418091d26628fdda43f51cb", kill_on_drop: false }` [INFO] [stdout] b0d6a2ea9ae44d13868b419c97ffe5c35168e74a1418091d26628fdda43f51cb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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] 9fd01980ac197e4e7c7c2b47bb774292c1ab83c5a42b892e1e8823e664025223 [INFO] running `Command { std: "docker" "start" "-a" "9fd01980ac197e4e7c7c2b47bb774292c1ab83c5a42b892e1e8823e664025223", kill_on_drop: false }` [INFO] [stderr] Compiling rust-book-repeat v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `s2` [INFO] [stdout] --> src/ch04_01_ownership/mod.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let s2 = s1; // value MOVED here [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `black` [INFO] [stdout] --> src/ch05_structs/mod.rs:43:9 [INFO] [stdout] | [INFO] [stdout] 43 | 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: `origin` [INFO] [stdout] --> src/ch05_structs/mod.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | let origin = Point(0, 0, 0); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `four` [INFO] [stdout] --> src/ch06_enums/mod.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let four = IpAddrKind::V4; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_four` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `six` [INFO] [stdout] --> src/ch06_enums/mod.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | let six = IpAddrKind::V6; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_six` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/ch06_enums/mod.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let home = IpAddr::V4(127, 0, 0, 1); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/ch06_enums/mod.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let loopback = IpAddr::V6(String::from("::1")); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_number` [INFO] [stdout] --> src/ch06_enums/mod.rs:27:9 [INFO] [stdout] | [INFO] [stdout] 27 | 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: `absent_number` [INFO] [stdout] --> src/ch06_enums/mod.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 28 | let absent_number: Option = None; [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_absent_number` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `count` is assigned to, but never used [INFO] [stdout] --> src/ch06_enums/mod.rs:64:13 [INFO] [stdout] | [INFO] [stdout] 64 | let mut count = 0; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_count` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `count` is never read [INFO] [stdout] --> src/ch06_enums/mod.rs:70:9 [INFO] [stdout] | [INFO] [stdout] 70 | count += 1; [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: `integer` [INFO] [stdout] --> src/ch10_01_generics/mod.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let integer = Point { x: 5, y: 10 }; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/ch15_04_rc/mod.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let b = Cons(3, Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/ch15_04_rc/mod.rs:17:13 [INFO] [stdout] | [INFO] [stdout] 17 | let c = Cons(4, Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/ch19_03_adv_types/mod.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let f: Thunk = Box::new(|| println!("hi")); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `text_length` [INFO] [stdout] --> src/options/mod.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | let text_length: Option = text.as_ref().map(|s| s.len()); [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_text_length` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/options/mod.rs:42:9 [INFO] [stdout] | [INFO] [stdout] 42 | let x: Option<&str> = None; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/vectors/mod.rs:1010:47 [INFO] [stdout] | [INFO] [stdout] 1010 | assert_eq!(s.binary_search_by_key(&13, |&(a, b)| b), Ok(9)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/vectors/mod.rs:1011:46 [INFO] [stdout] | [INFO] [stdout] 1011 | assert_eq!(s.binary_search_by_key(&4, |&(a, b)| b), Err(7)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/vectors/mod.rs:1012:48 [INFO] [stdout] | [INFO] [stdout] 1012 | assert_eq!(s.binary_search_by_key(&100, |&(a, b)| b), Err(13)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/vectors/mod.rs:1013:43 [INFO] [stdout] | [INFO] [stdout] 1013 | let r = s.binary_search_by_key(&1, |&(a, b)| b); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/iterator/mod.rs:73:9 [INFO] [stdout] | [INFO] [stdout] 73 | let mut iter = a1.iter().chain(a2.iter()); [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: 22 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.18s [INFO] running `Command { std: "docker" "inspect" "9fd01980ac197e4e7c7c2b47bb774292c1ab83c5a42b892e1e8823e664025223", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9fd01980ac197e4e7c7c2b47bb774292c1ab83c5a42b892e1e8823e664025223", kill_on_drop: false }` [INFO] [stdout] 9fd01980ac197e4e7c7c2b47bb774292c1ab83c5a42b892e1e8823e664025223 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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] 8f631d61f9c6faef7464de0bbbdc05fd452692eebb266af2e56f9a7eb0baace3 [INFO] running `Command { std: "docker" "start" "-a" "8f631d61f9c6faef7464de0bbbdc05fd452692eebb266af2e56f9a7eb0baace3", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: unused variable: `s2` [INFO] [stderr] --> src/ch04_01_ownership/mod.rs:14:9 [INFO] [stderr] | [INFO] [stderr] 14 | let s2 = s1; // value MOVED here [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `black` [INFO] [stderr] --> src/ch05_structs/mod.rs:43:9 [INFO] [stderr] | [INFO] [stderr] 43 | let black = Color(0, 0, 0); [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_black` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `origin` [INFO] [stderr] --> src/ch05_structs/mod.rs:44:9 [INFO] [stderr] | [INFO] [stderr] 44 | let origin = Point(0, 0, 0); [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `four` [INFO] [stderr] --> src/ch06_enums/mod.rs:2:9 [INFO] [stderr] | [INFO] [stderr] 2 | let four = IpAddrKind::V4; [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_four` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `six` [INFO] [stderr] --> src/ch06_enums/mod.rs:3:9 [INFO] [stderr] | [INFO] [stderr] 3 | let six = IpAddrKind::V6; [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_six` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `home` [INFO] [stderr] --> src/ch06_enums/mod.rs:15:9 [INFO] [stderr] | [INFO] [stderr] 15 | let home = IpAddr::V4(127, 0, 0, 1); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `loopback` [INFO] [stderr] --> src/ch06_enums/mod.rs:16:9 [INFO] [stderr] | [INFO] [stderr] 16 | let loopback = IpAddr::V6(String::from("::1")); [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `some_number` [INFO] [stderr] --> src/ch06_enums/mod.rs:27:9 [INFO] [stderr] | [INFO] [stderr] 27 | 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: `absent_number` [INFO] [stderr] --> src/ch06_enums/mod.rs:28:9 [INFO] [stderr] | [INFO] [stderr] 28 | let absent_number: Option = None; [INFO] [stderr] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_absent_number` [INFO] [stderr] [INFO] [stderr] warning: variable `count` is assigned to, but never used [INFO] [stderr] --> src/ch06_enums/mod.rs:64:13 [INFO] [stderr] | [INFO] [stderr] 64 | let mut count = 0; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_count` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `count` is never read [INFO] [stderr] --> src/ch06_enums/mod.rs:70:9 [INFO] [stderr] | [INFO] [stderr] 70 | count += 1; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `integer` [INFO] [stderr] --> src/ch10_01_generics/mod.rs:13:9 [INFO] [stderr] | [INFO] [stderr] 13 | let integer = Point { x: 5, y: 10 }; [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/ch15_04_rc/mod.rs:14:9 [INFO] [stderr] | [INFO] [stderr] 14 | let b = Cons(3, Rc::clone(&a)); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c` [INFO] [stderr] --> src/ch15_04_rc/mod.rs:17:13 [INFO] [stderr] | [INFO] [stderr] 17 | let c = Cons(4, Rc::clone(&a)); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `f` [INFO] [stderr] --> src/ch19_03_adv_types/mod.rs:10:9 [INFO] [stderr] | [INFO] [stderr] 10 | let f: Thunk = Box::new(|| println!("hi")); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `text_length` [INFO] [stderr] --> src/options/mod.rs:33:9 [INFO] [stderr] | [INFO] [stderr] 33 | let text_length: Option = text.as_ref().map(|s| s.len()); [INFO] [stderr] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_text_length` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/options/mod.rs:42:9 [INFO] [stderr] | [INFO] [stderr] 42 | let x: Option<&str> = None; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/vectors/mod.rs:1010:47 [INFO] [stderr] | [INFO] [stderr] 1010 | assert_eq!(s.binary_search_by_key(&13, |&(a, b)| b), Ok(9)); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/vectors/mod.rs:1011:46 [INFO] [stderr] | [INFO] [stderr] 1011 | assert_eq!(s.binary_search_by_key(&4, |&(a, b)| b), Err(7)); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/vectors/mod.rs:1012:48 [INFO] [stderr] | [INFO] [stderr] 1012 | assert_eq!(s.binary_search_by_key(&100, |&(a, b)| b), Err(13)); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/vectors/mod.rs:1013:43 [INFO] [stderr] | [INFO] [stderr] 1013 | let r = s.binary_search_by_key(&1, |&(a, b)| b); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/iterator/mod.rs:73:9 [INFO] [stderr] | [INFO] [stderr] 73 | let mut iter = a1.iter().chain(a2.iter()); [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: `rust-book-repeat` (bin "rust-book-repeat" test) generated 22 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/rust_book_repeat-54dea5a3ff5fadd6) [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" "8f631d61f9c6faef7464de0bbbdc05fd452692eebb266af2e56f9a7eb0baace3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8f631d61f9c6faef7464de0bbbdc05fd452692eebb266af2e56f9a7eb0baace3", kill_on_drop: false }` [INFO] [stdout] 8f631d61f9c6faef7464de0bbbdc05fd452692eebb266af2e56f9a7eb0baace3