[INFO] cloning repository https://github.com/nacho-vlad/graph-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nacho-vlad/graph-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnacho-vlad%2Fgraph-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnacho-vlad%2Fgraph-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b2c787dccbb5c0817eecc8b187fffdf70355d392 [INFO] linting nacho-vlad/graph-rs against nightly for clippy-nonminimal_bool-denied [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnacho-vlad%2Fgraph-rs" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/nacho-vlad/graph-rs [INFO] finished tweaking git repo https://github.com/nacho-vlad/graph-rs [INFO] tweaked toml for git repo https://github.com/nacho-vlad/graph-rs written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/nacho-vlad/graph-rs 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/nacho-vlad/graph-rs 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] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded generational-arena v0.2.8 [INFO] [stderr] Downloaded rustyline v8.0.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] cef99be45ad1ae1d67abdffe9716da79c78f3e060eb39beddb12b21f5288d43d [INFO] running `Command { std: "docker" "start" "-a" "cef99be45ad1ae1d67abdffe9716da79c78f3e060eb39beddb12b21f5288d43d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "cef99be45ad1ae1d67abdffe9716da79c78f3e060eb39beddb12b21f5288d43d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cef99be45ad1ae1d67abdffe9716da79c78f3e060eb39beddb12b21f5288d43d", kill_on_drop: false }` [INFO] [stdout] cef99be45ad1ae1d67abdffe9716da79c78f3e060eb39beddb12b21f5288d43d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ebbe52e5073d769b0df75294b1c390691ad31ce886aa991c809a02aad9beacbe [INFO] running `Command { std: "docker" "start" "-a" "ebbe52e5073d769b0df75294b1c390691ad31ce886aa991c809a02aad9beacbe", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.92 [INFO] [stderr] Compiling getrandom v0.2.2 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Checking smallvec v1.6.1 [INFO] [stderr] Checking endian-type v0.1.2 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Checking unicode-segmentation v1.7.1 [INFO] [stderr] Checking utf8parse v0.2.0 [INFO] [stderr] Checking generational-arena v0.2.8 [INFO] [stderr] Checking nibble_vec v0.1.0 [INFO] [stderr] Checking radix_trie v0.2.1 [INFO] [stderr] Checking dirs-sys-next v0.1.2 [INFO] [stderr] Checking nix v0.20.0 [INFO] [stderr] Checking fs2 v0.4.3 [INFO] [stderr] Checking dirs-next v2.0.0 [INFO] [stderr] Checking rand_core v0.6.2 [INFO] [stderr] Checking rand_chacha v0.3.0 [INFO] [stderr] Checking rand v0.8.3 [INFO] [stderr] Checking rustyline v8.0.0 [INFO] [stderr] Checking graph v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: you should consider adding a `Default` implementation for `Graph` [INFO] [stdout] --> src/lib.rs:36:5 [INFO] [stdout] | [INFO] [stdout] 36 | / pub fn new() -> Self { [INFO] [stdout] 37 | | let arena = Arena::new(); [INFO] [stdout] 38 | | let inbound = HashMap::new(); [INFO] [stdout] 39 | | let outbound = HashMap::new(); [INFO] [stdout] ... | [INFO] [stdout] 47 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default [INFO] [stdout] = note: `#[warn(clippy::new_without_default)]` on by default [INFO] [stdout] help: try adding this [INFO] [stdout] | [INFO] [stdout] 34 + impl Default for Graph { [INFO] [stdout] 35 + fn default() -> Self { [INFO] [stdout] 36 + Self::new() [INFO] [stdout] 37 + } [INFO] [stdout] 38 + } [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: you should consider adding a `Default` implementation for `GraphMap` [INFO] [stdout] --> src/lib.rs:172:5 [INFO] [stdout] | [INFO] [stdout] 172 | / pub fn new() -> Self { [INFO] [stdout] 173 | | let graph = Graph::new(); [INFO] [stdout] 174 | | let map = HashMap::new(); [INFO] [stdout] 175 | | GraphMap { [INFO] [stdout] ... | [INFO] [stdout] 179 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default [INFO] [stdout] help: try adding this [INFO] [stdout] | [INFO] [stdout] 171 + impl Default for GraphMap { [INFO] [stdout] 172 + fn default() -> Self { [INFO] [stdout] 173 + Self::new() [INFO] [stdout] 174 + } [INFO] [stdout] 175 + } [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unneeded `return` statement [INFO] [stdout] --> src/lib.rs:198:24 [INFO] [stdout] | [INFO] [stdout] 198 | Some(_) => return (), [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] 198 - Some(_) => return (), [INFO] [stdout] 198 + Some(_) => (), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unneeded `()` [INFO] [stdout] --> src/lib.rs:198:31 [INFO] [stdout] | [INFO] [stdout] 198 | Some(_) => return (), [INFO] [stdout] | ^^ help: remove the `()` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit [INFO] [stdout] = note: `#[warn(clippy::unused_unit)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this boolean expression can be simplified [INFO] [stdout] --> src/lib.rs:225:9 [INFO] [stdout] | [INFO] [stdout] 225 | !self.get_edge(edge).is_none() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.get_edge(edge).is_some()` [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: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:150:21 [INFO] [stdout] | [INFO] [stdout] 150 | pub fn vertices(&self) -> generational_arena::Iter { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 150 | pub fn vertices(&self) -> generational_arena::Iter<'_, V> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:155:18 [INFO] [stdout] | [INFO] [stdout] 155 | pub fn edges(&self) -> hash_map::Iter { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 155 | pub fn edges(&self) -> hash_map::Iter<'_, EdgeId, E> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:292:21 [INFO] [stdout] | [INFO] [stdout] 292 | pub fn vertices(&self) -> hash_map::Keys { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 292 | pub fn vertices(&self) -> hash_map::Keys<'_, V, VertexId> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: you should consider adding a `Default` implementation for `Graph` [INFO] [stdout] --> src/lib.rs:36:5 [INFO] [stdout] | [INFO] [stdout] 36 | / pub fn new() -> Self { [INFO] [stdout] 37 | | let arena = Arena::new(); [INFO] [stdout] 38 | | let inbound = HashMap::new(); [INFO] [stdout] 39 | | let outbound = HashMap::new(); [INFO] [stdout] ... | [INFO] [stdout] 47 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default [INFO] [stdout] = note: `#[warn(clippy::new_without_default)]` on by default [INFO] [stdout] help: try adding this [INFO] [stdout] | [INFO] [stdout] 34 + impl Default for Graph { [INFO] [stdout] 35 + fn default() -> Self { [INFO] [stdout] 36 + Self::new() [INFO] [stdout] 37 + } [INFO] [stdout] 38 + } [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: you should consider adding a `Default` implementation for `GraphMap` [INFO] [stdout] --> src/lib.rs:172:5 [INFO] [stdout] | [INFO] [stdout] 172 | / pub fn new() -> Self { [INFO] [stdout] 173 | | let graph = Graph::new(); [INFO] [stdout] 174 | | let map = HashMap::new(); [INFO] [stdout] 175 | | GraphMap { [INFO] [stdout] ... | [INFO] [stdout] 179 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default [INFO] [stdout] help: try adding this [INFO] [stdout] | [INFO] [stdout] 171 + impl Default for GraphMap { [INFO] [stdout] 172 + fn default() -> Self { [INFO] [stdout] 173 + Self::new() [INFO] [stdout] 174 + } [INFO] [stdout] 175 + } [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unneeded `return` statement [INFO] [stdout] --> src/lib.rs:198:24 [INFO] [stdout] | [INFO] [stdout] 198 | Some(_) => return (), [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] 198 - Some(_) => return (), [INFO] [stdout] 198 + Some(_) => (), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unneeded `()` [INFO] [stdout] --> src/lib.rs:198:31 [INFO] [stdout] | [INFO] [stdout] 198 | Some(_) => return (), [INFO] [stdout] | ^^ help: remove the `()` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit [INFO] [stdout] = note: `#[warn(clippy::unused_unit)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this boolean expression can be simplified [INFO] [stdout] --> src/lib.rs:225:9 [INFO] [stdout] | [INFO] [stdout] 225 | !self.get_edge(edge).is_none() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.get_edge(edge).is_some()` [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: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:150:21 [INFO] [stdout] | [INFO] [stdout] 150 | pub fn vertices(&self) -> generational_arena::Iter { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 150 | pub fn vertices(&self) -> generational_arena::Iter<'_, V> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:155:18 [INFO] [stdout] | [INFO] [stdout] 155 | pub fn edges(&self) -> hash_map::Iter { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 155 | pub fn edges(&self) -> hash_map::Iter<'_, EdgeId, E> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:292:21 [INFO] [stdout] | [INFO] [stdout] 292 | pub fn vertices(&self) -> hash_map::Keys { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 292 | pub fn vertices(&self) -> hash_map::Keys<'_, V, VertexId> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `random_graph` is never used [INFO] [stdout] --> src/main.rs:9:4 [INFO] [stdout] | [INFO] [stdout] 9 | fn random_graph(vertices: u32, edges: u32) -> GraphMap { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `write!()` with a format string that ends in a single newline [INFO] [stdout] --> src/main.rs:74:5 [INFO] [stdout] | [INFO] [stdout] 74 | write!(writer, "{} {}\n", graph.vertex_count(), printed.len()).unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline [INFO] [stdout] = note: `#[warn(clippy::write_with_newline)]` on by default [INFO] [stdout] help: use `writeln!` instead [INFO] [stdout] | [INFO] [stdout] 74 - write!(writer, "{} {}\n", graph.vertex_count(), printed.len()).unwrap(); [INFO] [stdout] 74 + writeln!(writer, "{} {}", graph.vertex_count(), printed.len()).unwrap(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `write!()` with a format string that ends in a single newline [INFO] [stdout] --> src/main.rs:77:9 [INFO] [stdout] | [INFO] [stdout] 77 | write!(writer, "{} {} {}\n", o, t, c).unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline [INFO] [stdout] help: use `writeln!` instead [INFO] [stdout] | [INFO] [stdout] 77 - write!(writer, "{} {} {}\n", o, t, c).unwrap(); [INFO] [stdout] 77 + writeln!(writer, "{} {} {}", o, t, c).unwrap(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `write!()` with a format string that ends in a single newline [INFO] [stdout] --> src/main.rs:82:13 [INFO] [stdout] | [INFO] [stdout] 82 | write!(writer, "{}\n", v).unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline [INFO] [stdout] help: use `writeln!` instead [INFO] [stdout] | [INFO] [stdout] 82 - write!(writer, "{}\n", v).unwrap(); [INFO] [stdout] 82 + writeln!(writer, "{}", v).unwrap(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler [INFO] [stdout] --> src/main.rs:189:65 [INFO] [stdout] | [INFO] [stdout] 189 | ... write_graph(&mut std::io::stdout(), &g, undirected); [INFO] [stdout] | ^^ help: change this to: `g` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow [INFO] [stdout] = note: `#[warn(clippy::needless_borrow)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `random_graph` is never used [INFO] [stdout] --> src/main.rs:9:4 [INFO] [stdout] | [INFO] [stdout] 9 | fn random_graph(vertices: u32, edges: u32) -> GraphMap { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `write!()` with a format string that ends in a single newline [INFO] [stdout] --> src/main.rs:74:5 [INFO] [stdout] | [INFO] [stdout] 74 | write!(writer, "{} {}\n", graph.vertex_count(), printed.len()).unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline [INFO] [stdout] = note: `#[warn(clippy::write_with_newline)]` on by default [INFO] [stdout] help: use `writeln!` instead [INFO] [stdout] | [INFO] [stdout] 74 - write!(writer, "{} {}\n", graph.vertex_count(), printed.len()).unwrap(); [INFO] [stdout] 74 + writeln!(writer, "{} {}", graph.vertex_count(), printed.len()).unwrap(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `write!()` with a format string that ends in a single newline [INFO] [stdout] --> src/main.rs:77:9 [INFO] [stdout] | [INFO] [stdout] 77 | write!(writer, "{} {} {}\n", o, t, c).unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline [INFO] [stdout] help: use `writeln!` instead [INFO] [stdout] | [INFO] [stdout] 77 - write!(writer, "{} {} {}\n", o, t, c).unwrap(); [INFO] [stdout] 77 + writeln!(writer, "{} {} {}", o, t, c).unwrap(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `write!()` with a format string that ends in a single newline [INFO] [stdout] --> src/main.rs:82:13 [INFO] [stdout] | [INFO] [stdout] 82 | write!(writer, "{}\n", v).unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline [INFO] [stdout] help: use `writeln!` instead [INFO] [stdout] | [INFO] [stdout] 82 - write!(writer, "{}\n", v).unwrap(); [INFO] [stdout] 82 + writeln!(writer, "{}", v).unwrap(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler [INFO] [stdout] --> src/main.rs:189:65 [INFO] [stdout] | [INFO] [stdout] 189 | ... write_graph(&mut std::io::stdout(), &g, undirected); [INFO] [stdout] | ^^ help: change this to: `g` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow [INFO] [stdout] = note: `#[warn(clippy::needless_borrow)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.09s [INFO] running `Command { std: "docker" "inspect" "ebbe52e5073d769b0df75294b1c390691ad31ce886aa991c809a02aad9beacbe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ebbe52e5073d769b0df75294b1c390691ad31ce886aa991c809a02aad9beacbe", kill_on_drop: false }` [INFO] [stdout] ebbe52e5073d769b0df75294b1c390691ad31ce886aa991c809a02aad9beacbe