[INFO] cloning repository https://github.com/peterpeerdeman/learning-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/peterpeerdeman/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeterpeerdeman%2Flearning-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeterpeerdeman%2Flearning-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 6e3cdb3cc395570c70d020f0a2eeaadc715546b2 [INFO] linting peterpeerdeman/learning-rust against nightly for clippy-nonminimal_bool-denied [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeterpeerdeman%2Flearning-rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/peterpeerdeman/learning-rust [INFO] finished tweaking git repo https://github.com/peterpeerdeman/learning-rust [INFO] tweaked toml for git repo https://github.com/peterpeerdeman/learning-rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/peterpeerdeman/learning-rust on toolchain nightly [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/peterpeerdeman/learning-rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded redox_syscall v0.5.6 [INFO] [stderr] Downloaded futures v0.3.30 [INFO] [stderr] Downloaded futures-executor v0.3.30 [INFO] [stderr] Downloaded futures-channel v0.3.30 [INFO] [stderr] Downloaded addr2line v0.24.1 [INFO] [stderr] Downloaded autocfg v1.3.0 [INFO] [stderr] Downloaded object v0.36.4 [INFO] [stderr] Downloaded gimli v0.31.0 [INFO] [stderr] Downloaded syn v2.0.77 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 092c0fb456b3b736686746341eeec8a08bf57a191b4d916ab71d1dbb4611e176 [INFO] running `Command { std: "docker" "start" "-a" "092c0fb456b3b736686746341eeec8a08bf57a191b4d916ab71d1dbb4611e176", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "092c0fb456b3b736686746341eeec8a08bf57a191b4d916ab71d1dbb4611e176", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "092c0fb456b3b736686746341eeec8a08bf57a191b4d916ab71d1dbb4611e176", kill_on_drop: false }` [INFO] [stdout] 092c0fb456b3b736686746341eeec8a08bf57a191b4d916ab71d1dbb4611e176 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f6a791206c7ef0ad98fe3770d2972028dd9a63363d80b84351f53385dfa61f07 [INFO] running `Command { std: "docker" "start" "-a" "f6a791206c7ef0ad98fe3770d2972028dd9a63363d80b84351f53385dfa61f07", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Compiling unicode-ident v1.0.13 [INFO] [stderr] Compiling autocfg v1.3.0 [INFO] [stderr] Compiling libc v0.2.158 [INFO] [stderr] Compiling crossbeam-utils v0.8.20 [INFO] [stderr] Checking memchr v2.7.4 [INFO] [stderr] Checking futures-core v0.3.30 [INFO] [stderr] Checking futures-sink v0.3.30 [INFO] [stderr] Compiling serde v1.0.210 [INFO] [stderr] Checking futures-io v0.3.30 [INFO] [stderr] Compiling rayon-core v1.12.1 [INFO] [stderr] Compiling serde_json v1.0.128 [INFO] [stderr] Checking ryu v1.0.18 [INFO] [stderr] Checking bytes v1.7.2 [INFO] [stderr] Checking either v1.13.0 [INFO] [stderr] Checking futures-channel v0.3.30 [INFO] [stderr] Compiling slab v0.4.9 [INFO] [stderr] Compiling lock_api v0.4.12 [INFO] [stderr] Checking crossbeam-epoch v0.9.18 [INFO] [stderr] Compiling quote v1.0.37 [INFO] [stderr] Checking parking_lot_core v0.9.10 [INFO] [stderr] Checking mio v1.0.2 [INFO] [stderr] Checking socket2 v0.5.7 [INFO] [stderr] Checking signal-hook-registry v1.4.2 [INFO] [stderr] Checking crossbeam-deque v0.8.5 [INFO] [stderr] Compiling syn v2.0.77 [INFO] [stderr] Checking parking_lot v0.12.3 [INFO] [stderr] Checking rayon v1.10.0 [INFO] [stderr] Compiling futures-macro v0.3.30 [INFO] [stderr] Compiling serde_derive v1.0.210 [INFO] [stderr] Compiling tokio-macros v2.4.0 [INFO] [stderr] Checking tokio v1.40.0 [INFO] [stderr] Checking futures-util v0.3.30 [INFO] [stderr] Checking futures-executor v0.3.30 [INFO] [stderr] Checking futures v0.3.30 [INFO] [stderr] Checking learning-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: fields `name` and `weight_gram` are never read [INFO] [stdout] --> src/main.rs:411:9 [INFO] [stdout] | [INFO] [stdout] 410 | struct Phone { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 411 | name: &'static str, [INFO] [stdout] | ^^^^ [INFO] [stdout] 412 | weight_gram: u32, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Phone` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `data` is never read [INFO] [stdout] --> src/main.rs:584:9 [INFO] [stdout] | [INFO] [stdout] 583 | struct LargeStruct { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] 584 | data: [u8; 1_000_000], [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `LargeStruct` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `AnotherI8` and `OneMoreI8` are never constructed [INFO] [stdout] --> src/main.rs:598:9 [INFO] [stdout] | [INFO] [stdout] 596 | enum EnumOfNumbers { [INFO] [stdout] | ------------- variants in this enum [INFO] [stdout] 597 | I8(i8), [INFO] [stdout] 598 | AnotherI8(i8), [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 599 | OneMoreI8(i8), [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `name` and `weight_gram` are never read [INFO] [stdout] --> src/main.rs:411:9 [INFO] [stdout] | [INFO] [stdout] 410 | struct Phone { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 411 | name: &'static str, [INFO] [stdout] | ^^^^ [INFO] [stdout] 412 | weight_gram: u32, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Phone` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `data` is never read [INFO] [stdout] --> src/main.rs:584:9 [INFO] [stdout] | [INFO] [stdout] 583 | struct LargeStruct { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] 584 | data: [u8; 1_000_000], [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `LargeStruct` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `AnotherI8` and `OneMoreI8` are never constructed [INFO] [stdout] --> src/main.rs:598:9 [INFO] [stdout] | [INFO] [stdout] 596 | enum EnumOfNumbers { [INFO] [stdout] | ------------- variants in this enum [INFO] [stdout] 597 | I8(i8), [INFO] [stdout] 598 | AnotherI8(i8), [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 599 | OneMoreI8(i8), [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let` [INFO] [stdout] --> src/main.rs:191:9 [INFO] [stdout] | [INFO] [stdout] 191 | / match device.device_type { [INFO] [stdout] 192 | | Synth => device.connect(), [INFO] [stdout] 193 | | _ => (), [INFO] [stdout] 194 | | } [INFO] [stdout] | |_________^ help: try: `if let Synth = device.device_type { device.connect() }` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match [INFO] [stdout] = note: `#[warn(clippy::single_match)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do [INFO] [stdout] --> src/main.rs:200:27 [INFO] [stdout] | [INFO] [stdout] 200 | fn take_fifth(vector: &Vec) -> Option { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [INFO] [stdout] = note: `#[warn(clippy::ptr_arg)]` on by default [INFO] [stdout] help: change this to [INFO] [stdout] | [INFO] [stdout] 200 - fn take_fifth(vector: &Vec) -> Option { [INFO] [stdout] 200 + fn take_fifth(vector: &[i32]) -> Option { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let` [INFO] [stdout] --> src/main.rs:191:9 [INFO] [stdout] | [INFO] [stdout] 191 | / match device.device_type { [INFO] [stdout] 192 | | Synth => device.connect(), [INFO] [stdout] 193 | | _ => (), [INFO] [stdout] 194 | | } [INFO] [stdout] | |_________^ help: try: `if let Synth = device.device_type { device.connect() }` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match [INFO] [stdout] = note: `#[warn(clippy::single_match)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do [INFO] [stdout] --> src/main.rs:200:27 [INFO] [stdout] | [INFO] [stdout] 200 | fn take_fifth(vector: &Vec) -> Option { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [INFO] [stdout] = note: `#[warn(clippy::ptr_arg)]` on by default [INFO] [stdout] help: change this to [INFO] [stdout] | [INFO] [stdout] 200 - fn take_fifth(vector: &Vec) -> Option { [INFO] [stdout] 200 + fn take_fifth(vector: &[i32]) -> Option { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this boolean expression can be simplified [INFO] [stdout] --> src/main.rs:312:16 [INFO] [stdout] | [INFO] [stdout] 312 | if !value.is_ok() { [INFO] [stdout] | ^^^^^^^^^^^^^^ help: try: `value.is_err()` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool [INFO] [stdout] = note: `#[warn(clippy::nonminimal_bool)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this boolean expression can be simplified [INFO] [stdout] --> src/main.rs:312:16 [INFO] [stdout] | [INFO] [stdout] 312 | if !value.is_ok() { [INFO] [stdout] | ^^^^^^^^^^^^^^ help: try: `value.is_err()` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool [INFO] [stdout] = note: `#[warn(clippy::nonminimal_bool)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unneeded `return` statement [INFO] [stdout] --> src/main.rs:363:13 [INFO] [stdout] | [INFO] [stdout] 363 | return item.unwrap_or(0) == 1; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stdout] = note: `#[warn(clippy::needless_return)]` on by default [INFO] [stdout] help: remove `return` [INFO] [stdout] | [INFO] [stdout] 363 - return item.unwrap_or(0) == 1; [INFO] [stdout] 363 + item.unwrap_or(0) == 1 [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unneeded `return` statement [INFO] [stdout] --> src/main.rs:363:13 [INFO] [stdout] | [INFO] [stdout] 363 | return item.unwrap_or(0) == 1; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stdout] = note: `#[warn(clippy::needless_return)]` on by default [INFO] [stdout] help: remove `return` [INFO] [stdout] | [INFO] [stdout] 363 - return item.unwrap_or(0) == 1; [INFO] [stdout] 363 + item.unwrap_or(0) == 1 [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: manual implementation of an assign operation [INFO] [stdout] --> src/main.rs:391:13 [INFO] [stdout] | [INFO] [stdout] 391 | self.population = self.population * 2; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.population *= 2` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern [INFO] [stdout] = note: `#[warn(clippy::assign_op_pattern)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: manual implementation of an assign operation [INFO] [stdout] --> src/main.rs:391:13 [INFO] [stdout] | [INFO] [stdout] 391 | self.population = self.population * 2; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.population *= 2` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern [INFO] [stdout] = note: `#[warn(clippy::assign_op_pattern)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: useless use of `vec!` [INFO] [stdout] --> src/main.rs:287:19 [INFO] [stdout] | [INFO] [stdout] 287 | let num_vec = vec![2, 4, 6]; [INFO] [stdout] | ^^^^^^^^^^^^^ help: you can use an array directly: `[2, 4, 6]` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec [INFO] [stdout] = note: `#[warn(clippy::useless_vec)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: useless use of `vec!` [INFO] [stdout] --> src/main.rs:345:25 [INFO] [stdout] | [INFO] [stdout] 345 | let some_are_none = vec![Some("yes"), Some("yes"), None]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: you can use an array directly: `[Some("yes"), Some("yes"), None]` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: useless use of `vec!` [INFO] [stdout] --> src/main.rs:353:25 [INFO] [stdout] | [INFO] [stdout] 353 | let some_are_none = vec![Some(1), Some(1), None]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: you can use an array directly: `[Some(1), Some(1), None]` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: useless use of `vec!` [INFO] [stdout] --> src/main.rs:395:18 [INFO] [stdout] | [INFO] [stdout] 395 | let cities = vec!["Purmerend".to_string(), "Amsterdam".to_string()]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: you can use an array directly: `["Purmerend".to_string(), "Amsterdam".to_string()]` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: useless use of `vec!` [INFO] [stdout] --> src/main.rs:287:19 [INFO] [stdout] | [INFO] [stdout] 287 | let num_vec = vec![2, 4, 6]; [INFO] [stdout] | ^^^^^^^^^^^^^ help: you can use an array directly: `[2, 4, 6]` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec [INFO] [stdout] = note: `#[warn(clippy::useless_vec)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: useless use of `vec!` [INFO] [stdout] --> src/main.rs:345:25 [INFO] [stdout] | [INFO] [stdout] 345 | let some_are_none = vec![Some("yes"), Some("yes"), None]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: you can use an array directly: `[Some("yes"), Some("yes"), None]` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: useless use of `vec!` [INFO] [stdout] --> src/main.rs:353:25 [INFO] [stdout] | [INFO] [stdout] 353 | let some_are_none = vec![Some(1), Some(1), None]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: you can use an array directly: `[Some(1), Some(1), None]` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: useless use of `vec!` [INFO] [stdout] --> src/main.rs:395:18 [INFO] [stdout] | [INFO] [stdout] 395 | let cities = vec!["Purmerend".to_string(), "Amsterdam".to_string()]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: you can use an array directly: `["Purmerend".to_string(), "Amsterdam".to_string()]` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.81s [INFO] running `Command { std: "docker" "inspect" "f6a791206c7ef0ad98fe3770d2972028dd9a63363d80b84351f53385dfa61f07", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f6a791206c7ef0ad98fe3770d2972028dd9a63363d80b84351f53385dfa61f07", kill_on_drop: false }` [INFO] [stdout] f6a791206c7ef0ad98fe3770d2972028dd9a63363d80b84351f53385dfa61f07