[INFO] cloning repository https://github.com/et4te/swim
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/et4te/swim" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fet4te%2Fswim", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fet4te%2Fswim'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3bb49e22e1cfe12cd081aeac06ceb883535a92a7
[INFO] checking et4te/swim against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fet4te%2Fswim" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/et4te/swim on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/et4te/swim
[INFO] finished tweaking git repo https://github.com/et4te/swim
[INFO] tweaked toml for git repo https://github.com/et4te/swim written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/et4te/swim already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/crossbeam-rs/crossbeam`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52edc55018ff7896fc3f9d513d075c124b898b17329e4cf2f02a2e2015f886a7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "52edc55018ff7896fc3f9d513d075c124b898b17329e4cf2f02a2e2015f886a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52edc55018ff7896fc3f9d513d075c124b898b17329e4cf2f02a2e2015f886a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52edc55018ff7896fc3f9d513d075c124b898b17329e4cf2f02a2e2015f886a7", kill_on_drop: false }`
[INFO] [stdout] 52edc55018ff7896fc3f9d513d075c124b898b17329e4cf2f02a2e2015f886a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28c6c0a603db35d5f60b8a0ed3d1507e5cf5d9241bd83f7f9e90e1b2749929a1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "28c6c0a603db35d5f60b8a0ed3d1507e5cf5d9241bd83f7f9e90e1b2749929a1", kill_on_drop: false }`
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[INFO] [stdout] warning: field is never read: `indegree`
[INFO] [stdout]  --> src/digraph.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     indegree: Vec<u32>, // indegree[v] = indegree of vertex v
[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: `new`
[INFO] [stdout]   --> src/digraph.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn new(v: u32) -> Digraph {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `validate_vertex`
[INFO] [stdout]   --> src/digraph.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn validate_vertex(&self, v: u32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_edge`
[INFO] [stdout]   --> src/digraph.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn add_edge(&mut self, v: u32, w: u32) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `adj`
[INFO] [stdout]   --> src/digraph.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub fn adj(&self, v: u32) -> Vec<u32> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `outdegree`
[INFO] [stdout]   --> src/digraph.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn outdegree(&self, v: u32) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `indegree`
[INFO] [stdout]   --> src/digraph.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn indegree(&self, v: u32) -> u32 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reverse`
[INFO] [stdout]   --> src/digraph.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn reverse(&self) -> Digraph {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `A`
[INFO] [stdout]   --> src/protocol/slush.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const A: f32 = 0.5;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `K`
[INFO] [stdout]   --> src/protocol/slush.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const K: usize = 4;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/protocol/slush.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn new(addr: NetAddr) -> Slush {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_col`
[INFO] [stdout]   --> src/protocol/slush.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn set_col(&mut self, col: Colour) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `send_query`
[INFO] [stdout]   --> src/protocol/slush.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn send_query(&self, tx: ColourTx, peer_addr: NetAddr) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `handle_query`
[INFO] [stdout]   --> src/protocol/slush.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn handle_query(&mut self, tx: ResponseTx, col: Colour) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]   --> src/protocol/slush.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn run(&mut self, tx: &ColourTx, rx: &mut ColourRx, membership: &Membership) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `outcome`
[INFO] [stdout]    --> src/protocol/slush.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 | pub fn outcome(votes: Vec<Colour>) -> (u32, u32) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `A`
[INFO] [stdout]   --> src/protocol/snowflake.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | const A: f32 = 0.5;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `B`
[INFO] [stdout]   --> src/protocol/snowflake.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const B: u32 = 11;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `K`
[INFO] [stdout]   --> src/protocol/snowflake.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | const K: usize = 4;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Snowflake`
[INFO] [stdout]   --> src/protocol/snowflake.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Snowflake {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/protocol/snowflake.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn new(addr: NetAddr) -> Snowflake {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_col`
[INFO] [stdout]   --> src/protocol/snowflake.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn set_col(&mut self, col: Colour) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_cnt`
[INFO] [stdout]   --> src/protocol/snowflake.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn set_cnt(&mut self, cnt: u32) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `send_query`
[INFO] [stdout]   --> src/protocol/snowflake.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn send_query(&self, tx: ColourTx, peer_addr: NetAddr) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `handle_query`
[INFO] [stdout]   --> src/protocol/snowflake.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn handle_query(&mut self, tx: ResponseTx, col: Colour) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]   --> src/protocol/snowflake.rs:81:12
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn run(&mut self, tx: &ColourTx, rx: &mut ColourRx, membership: &Membership) -> bool {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `outcome`
[INFO] [stdout]    --> src/protocol/snowflake.rs:139:8
[INFO] [stdout]     |
[INFO] [stdout] 139 | pub fn outcome(votes: Vec<Colour>) -> (u32, u32) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/digraph.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         write!(f, "{:?} vertices, {:?} edges\n", self.v(), self.e());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/digraph.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |             write!(f, "{:?}: ", v);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/digraph.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |                 write!(f, "{:?} ", w);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/digraph.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |             write!(f, "\n");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/digraph.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |         if v < 0 || v >= self.v {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `adj`
[INFO] [stdout]   --> src/digraph.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub fn adj(&self, v: u32) -> Vec<u32> {
[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: `outdegree`
[INFO] [stdout]   --> src/digraph.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn outdegree(&self, v: u32) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `indegree`
[INFO] [stdout]   --> src/digraph.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn indegree(&self, v: u32) -> u32 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reverse`
[INFO] [stdout]   --> src/digraph.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn reverse(&self) -> Digraph {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `A`
[INFO] [stdout]   --> src/protocol/slush.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const A: f32 = 0.5;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `K`
[INFO] [stdout]   --> src/protocol/slush.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const K: usize = 4;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/protocol/slush.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn new(addr: NetAddr) -> Slush {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_col`
[INFO] [stdout]   --> src/protocol/slush.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn set_col(&mut self, col: Colour) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `send_query`
[INFO] [stdout]   --> src/protocol/slush.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn send_query(&self, tx: ColourTx, peer_addr: NetAddr) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `handle_query`
[INFO] [stdout]   --> src/protocol/slush.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn handle_query(&mut self, tx: ResponseTx, col: Colour) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]   --> src/protocol/slush.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn run(&mut self, tx: &ColourTx, rx: &mut ColourRx, membership: &Membership) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `outcome`
[INFO] [stdout]    --> src/protocol/slush.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 | pub fn outcome(votes: Vec<Colour>) -> (u32, u32) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `A`
[INFO] [stdout]   --> src/protocol/snowflake.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | const A: f32 = 0.5;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `B`
[INFO] [stdout]   --> src/protocol/snowflake.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const B: u32 = 11;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `K`
[INFO] [stdout]   --> src/protocol/snowflake.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | const K: usize = 4;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Snowflake`
[INFO] [stdout]   --> src/protocol/snowflake.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Snowflake {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/protocol/snowflake.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn new(addr: NetAddr) -> Snowflake {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_col`
[INFO] [stdout]   --> src/protocol/snowflake.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn set_col(&mut self, col: Colour) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_cnt`
[INFO] [stdout]   --> src/protocol/snowflake.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn set_cnt(&mut self, cnt: u32) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `send_query`
[INFO] [stdout]   --> src/protocol/snowflake.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn send_query(&self, tx: ColourTx, peer_addr: NetAddr) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `handle_query`
[INFO] [stdout]   --> src/protocol/snowflake.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn handle_query(&mut self, tx: ResponseTx, col: Colour) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]   --> src/protocol/snowflake.rs:81:12
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn run(&mut self, tx: &ColourTx, rx: &mut ColourRx, membership: &Membership) -> bool {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `outcome`
[INFO] [stdout]    --> src/protocol/snowflake.rs:139:8
[INFO] [stdout]     |
[INFO] [stdout] 139 | pub fn outcome(votes: Vec<Colour>) -> (u32, u32) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/digraph.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         write!(f, "{:?} vertices, {:?} edges\n", self.v(), self.e());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/digraph.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |             write!(f, "{:?}: ", v);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/digraph.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |                 write!(f, "{:?} ", w);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/digraph.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |             write!(f, "\n");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/digraph.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |         if v < 0 || v >= self.v {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.98s
[INFO] running `Command { std: "docker" "inspect" "28c6c0a603db35d5f60b8a0ed3d1507e5cf5d9241bd83f7f9e90e1b2749929a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28c6c0a603db35d5f60b8a0ed3d1507e5cf5d9241bd83f7f9e90e1b2749929a1", kill_on_drop: false }`
[INFO] [stdout] 28c6c0a603db35d5f60b8a0ed3d1507e5cf5d9241bd83f7f9e90e1b2749929a1