[INFO] fetching crate graphbench 0.1.8...
[INFO] testing graphbench-0.1.8 against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] extracting crate graphbench 0.1.8 into /workspace/builds/worker-5-tc1/source
[INFO] removed /workspace/builds/worker-5-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate graphbench 0.1.8
[INFO] finished tweaking crates.io crate graphbench 0.1.8
[INFO] tweaked toml for crates.io crate graphbench 0.1.8 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate graphbench 0.1.8 on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 24 packages to latest compatible versions
[INFO] [stderr]       Adding itertools v0.9.0 (available: v0.14.0)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding rand_chacha v0.3.1 (available: v0.9.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crc32fast v1.5.0
[INFO] [stderr]   Downloaded union-find-rs v0.2.1
[INFO] [stderr]   Downloaded flate2 v1.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d33a05ce19aa47cdb39c759f59bda5afeacaf79fb8a6e21b317832ca311e652f
[INFO] running `Command { std: "docker" "start" "-a" "d33a05ce19aa47cdb39c759f59bda5afeacaf79fb8a6e21b317832ca311e652f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d33a05ce19aa47cdb39c759f59bda5afeacaf79fb8a6e21b317832ca311e652f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d33a05ce19aa47cdb39c759f59bda5afeacaf79fb8a6e21b317832ca311e652f", kill_on_drop: false }`
[INFO] [stdout] d33a05ce19aa47cdb39c759f59bda5afeacaf79fb8a6e21b317832ca311e652f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7495833113f4422beed3656952c8c47ea5e572562daf9cfa1378031dd5d597f7
[INFO] running `Command { std: "docker" "start" "-a" "7495833113f4422beed3656952c8c47ea5e572562daf9cfa1378031dd5d597f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling simd-adler32 v0.3.7
[INFO] [stderr]    Compiling adler2 v2.0.1
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling union-find-rs v0.2.1
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling flate2 v1.1.4
[INFO] [stderr]    Compiling graphbench v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph.rs:118:22
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a>;
[INFO] [stdout]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                 |
[INFO] [stdout]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>;
[INFO] [stdout]     |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph.rs:121:24
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>;
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>;
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph.rs:308:24
[INFO] [stdout]     |
[INFO] [stdout] 308 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 308 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph.rs:313:28
[INFO] [stdout]     |
[INFO] [stdout] 313 |     fn out_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>;
[INFO] [stdout]     |                            ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                            |                                            |
[INFO] [stdout]     |                            this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 313 |     fn out_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>;
[INFO] [stdout]     |                                                                          ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph.rs:316:27
[INFO] [stdout]     |
[INFO] [stdout] 316 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>;
[INFO] [stdout]     |                           ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                           |                                            |
[INFO] [stdout]     |                           this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 316 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>;
[INFO] [stdout]     |                                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/editgraph.rs:168:22
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                 |
[INFO] [stdout]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/editgraph.rs:173:24
[INFO] [stdout]     |
[INFO] [stdout] 173 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 173 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/dtfgraph.rs:71:22
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn vertices<'b>(&'b self) -> Box<dyn Iterator<Item=&Vertex> + 'b> {
[INFO] [stdout]    |                      ^^                                -------    -- the lifetimes get resolved as `'b`
[INFO] [stdout]    |                      |                                 |
[INFO] [stdout]    |                      |                                 the lifetimes get resolved as `'b`
[INFO] [stdout]    |                      this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to consistently use `'b`
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn vertices<'b>(&'b self) -> Box<dyn Iterator<Item=&'b Vertex> + 'b> {
[INFO] [stdout]    |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/dtfgraph.rs:75:24
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn neighbours<'b>(&'b self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'b> {
[INFO] [stdout]    |                        ^^                                           -------    -- the lifetimes get resolved as `'b`
[INFO] [stdout]    |                        |                                            |
[INFO] [stdout]    |                        this lifetime flows to the output            the lifetimes get resolved as `'b`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to consistently use `'b`
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn neighbours<'b>(&'b self, _:&Vertex) -> Box<dyn Iterator<Item=&'b Vertex> + 'b> {
[INFO] [stdout]    |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/dtfgraph.rs:95:24
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]    |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]    |                        |                                            |
[INFO] [stdout]    |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]    |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:100:28
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn out_neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                            ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                            |                                            |
[INFO] [stdout]     |                            this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn out_neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                          ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:105:27
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                           ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                           |                                            |
[INFO] [stdout]     |                           this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:196:22
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn vertices<'a>(&'a self) ->  Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                      ^^                                 -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                  |
[INFO] [stdout]     |                      |                                  the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn vertices<'a>(&'a self) ->  Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                          ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:205:24
[INFO] [stdout]     |
[INFO] [stdout] 205 |     fn neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 205 |     fn neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:230:28
[INFO] [stdout]     |
[INFO] [stdout] 230 |     fn out_neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>  {
[INFO] [stdout]     |                            ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                            |                                            |
[INFO] [stdout]     |                            this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 230 |     fn out_neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>  {
[INFO] [stdout]     |                                                                          ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:234:27
[INFO] [stdout]     |
[INFO] [stdout] 234 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>  {
[INFO] [stdout]     |                           ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                           |                                            |
[INFO] [stdout]     |                           this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 234 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>  {
[INFO] [stdout]     |                                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:271:18
[INFO] [stdout]     |
[INFO] [stdout] 271 |     pub fn layer(&mut self, depth:usize) -> DTFLayer {
[INFO] [stdout]     |                  ^^^^^^^^^                  -------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 271 |     pub fn layer(&mut self, depth:usize) -> DTFLayer<'_> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:383:17
[INFO] [stdout]     |
[INFO] [stdout] 383 |     pub fn arcs(&self) -> DTFArcIterator {
[INFO] [stdout]     |                 ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 383 |     pub fn arcs(&self) -> DTFArcIterator<'_> {
[INFO] [stdout]     |                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:387:20
[INFO] [stdout]     |
[INFO] [stdout] 387 |     pub fn arcs_at(&self, depth:usize) -> DTFArcIterator {
[INFO] [stdout]     |                    ^^^^^                  -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 387 |     pub fn arcs_at(&self, depth:usize) -> DTFArcIterator<'_> {
[INFO] [stdout]     |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:391:35
[INFO] [stdout]     |
[INFO] [stdout] 391 |     pub fn in_neighbourhoods_iter(&self) -> DTFNIterator {
[INFO] [stdout]     |                                   ^^^^^     ------------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 391 |     pub fn in_neighbourhoods_iter(&self) -> DTFNIterator<'_> {
[INFO] [stdout]     |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:395:38
[INFO] [stdout]     |
[INFO] [stdout] 395 |     pub fn in_neighbourhoods_iter_at(&self, depth:usize) -> DTFNIterator {
[INFO] [stdout]     |                                      ^^^^^                  ------------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                                      |
[INFO] [stdout]     |                                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 395 |     pub fn in_neighbourhoods_iter_at(&self, depth:usize) -> DTFNIterator<'_> {
[INFO] [stdout]     |                                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:399:34
[INFO] [stdout]     |
[INFO] [stdout] 399 |     pub fn in_neighbours_at<'a>(&'a self, u:&Vertex, depth:usize) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                                  ^^                                                        -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                                  |                                                         |
[INFO] [stdout]     |                                  this lifetime flows to the output                         the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 399 |     pub fn in_neighbours_at<'a>(&'a self, u:&Vertex, depth:usize) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                                             ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/ordgraph.rs:42:24
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn neighbours<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]    |                        ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]    |                        |                                 |
[INFO] [stdout]    |                        |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]    |                        this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn neighbours<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]    |                                                           ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ordgraph.rs:217:22
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                 |
[INFO] [stdout]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ordgraph.rs:222:24
[INFO] [stdout]     |
[INFO] [stdout] 222 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 222 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/reachgraph.rs:66:22
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn reachables_at(&self, index_u:usize) -> Reachables<DEPTH> {
[INFO] [stdout]    |                      ^^^^^                    ----------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn reachables_at(&self, index_u:usize) -> Reachables<'_, DEPTH> {
[INFO] [stdout]    |                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/reachgraph.rs:89:23
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn reachables(&self, u:&Vertex) -> Reachables<DEPTH> {
[INFO] [stdout]    |                       ^^^^^                ----------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn reachables(&self, u:&Vertex) -> Reachables<'_, DEPTH> {
[INFO] [stdout]    |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/reachgraph.rs:94:28
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn next_reachables(&self, last:&Vertex) -> Option<Reachables<DEPTH>> {
[INFO] [stdout]    |                            ^^^^^                          ----------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn next_reachables(&self, last:&Vertex) -> Option<Reachables<'_, DEPTH>> {
[INFO] [stdout]    |                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/reachgraph.rs:153:22
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                 |
[INFO] [stdout]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/reachgraph.rs:157:24
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn neighbours<'a>(&'a self, _u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                            -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                             |
[INFO] [stdout]     |                        this lifetime flows to the output             the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn neighbours<'a>(&'a self, _u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                       ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/reachgraph.rs:337:17
[INFO] [stdout]     |
[INFO] [stdout] 337 |     pub fn iter(&self) -> ReachIterator<DEPTH> {
[INFO] [stdout]     |                 ^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 337 |     pub fn iter(&self) -> ReachIterator<'_, DEPTH> {
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/degengraph.rs:118:22
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                 |
[INFO] [stdout]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/degengraph.rs:122:24
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/degengraph.rs:302:17
[INFO] [stdout]     |
[INFO] [stdout] 302 |     pub fn iter(&self) -> DegenIterator {
[INFO] [stdout]     |                 ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 302 |     pub fn iter(&self) -> DegenIterator<'_> {
[INFO] [stdout]     |                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/iterators.rs:81:23
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fn neighbourhoods(&self) -> NeighIterator<G>;
[INFO] [stdout]    |                       ^^^^^     ---------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fn neighbourhoods(&self) -> NeighIterator<'_, G>;
[INFO] [stdout]    |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/iterators.rs:85:23
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn neighbourhoods(&self) -> NeighIterator<G> {
[INFO] [stdout]    |                       ^^^^^     ---------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn neighbourhoods(&self) -> NeighIterator<'_, G> {
[INFO] [stdout]    |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/iterators.rs:96:26
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn in_neighbourhoods(&self) -> DiNeighIterator<D>;
[INFO] [stdout]    |                          ^^^^^     ------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn in_neighbourhoods(&self) -> DiNeighIterator<'_, D>;
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/iterators.rs:99:27
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn out_neighbourhoods(&self) -> DiNeighIterator<D>;
[INFO] [stdout]    |                           ^^^^^     ------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn out_neighbourhoods(&self) -> DiNeighIterator<'_, D>;
[INFO] [stdout]    |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:103:26
[INFO] [stdout]     |
[INFO] [stdout] 103 |     fn in_neighbourhoods(&self) -> DiNeighIterator<D> {
[INFO] [stdout]     |                          ^^^^^     ------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 103 |     fn in_neighbourhoods(&self) -> DiNeighIterator<'_, D> {
[INFO] [stdout]     |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:107:27
[INFO] [stdout]     |
[INFO] [stdout] 107 |     fn out_neighbourhoods(&self) -> DiNeighIterator<D> {
[INFO] [stdout]     |                           ^^^^^     ------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 107 |     fn out_neighbourhoods(&self) -> DiNeighIterator<'_, D> {
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:176:14
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn edges(&self) -> EdgeIterator<G>;
[INFO] [stdout]     |              ^^^^^     --------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |              |
[INFO] [stdout]     |              this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn edges(&self) -> EdgeIterator<'_, G>;
[INFO] [stdout]     |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:180:14
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn edges(&self) -> EdgeIterator<G> {
[INFO] [stdout]     |              ^^^^^     --------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |              |
[INFO] [stdout]     |              this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn edges(&self) -> EdgeIterator<'_, G> {
[INFO] [stdout]     |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:247:27
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn vertices_and_edges(&self) -> MixedIterator<G>;
[INFO] [stdout]     |                           ^^^^^     ---------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn vertices_and_edges(&self) -> MixedIterator<'_, G>;
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:251:27
[INFO] [stdout]     |
[INFO] [stdout] 251 |     fn vertices_and_edges(&self) -> MixedIterator<G> {
[INFO] [stdout]     |                           ^^^^^     ---------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 251 |     fn vertices_and_edges(&self) -> MixedIterator<'_, G> {
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:313:13
[INFO] [stdout]     |
[INFO] [stdout] 313 |     fn arcs(&self) -> ArcIterator<D>;
[INFO] [stdout]     |             ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |             |
[INFO] [stdout]     |             this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 313 |     fn arcs(&self) -> ArcIterator<'_, D>;
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:317:13
[INFO] [stdout]     |
[INFO] [stdout] 317 |     fn arcs(&self) -> ArcIterator<D> {
[INFO] [stdout]     |             ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |             |
[INFO] [stdout]     |             this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 317 |     fn arcs(&self) -> ArcIterator<'_, D> {
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:381:27
[INFO] [stdout]     |
[INFO] [stdout] 381 |     pub fn all_depths(G: &'a DTFGraph) -> DTFArcIterator {
[INFO] [stdout]     |                           ^^              -------------- the lifetime gets resolved as `'a`
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 381 |     pub fn all_depths(G: &'a DTFGraph) -> DTFArcIterator<'a> {
[INFO] [stdout]     |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:391:28
[INFO] [stdout]     |
[INFO] [stdout] 391 |     pub fn fixed_depth(G: &'a DTFGraph, depth:usize) -> DTFArcIterator {
[INFO] [stdout]     |                            ^^                           -------------- the lifetime gets resolved as `'a`
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 391 |     pub fn fixed_depth(G: &'a DTFGraph, depth:usize) -> DTFArcIterator<'a> {
[INFO] [stdout]     |                                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:464:28
[INFO] [stdout]     |
[INFO] [stdout] 464 |     fn left_neighbourhoods(&self) -> LeftNeighIterator<L>;
[INFO] [stdout]     |                            ^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 464 |     fn left_neighbourhoods(&self) -> LeftNeighIterator<'_, L>;
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:468:28
[INFO] [stdout]     |
[INFO] [stdout] 468 |     fn left_neighbourhoods(&self) -> LeftNeighIterator<L> {
[INFO] [stdout]     |                            ^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 468 |     fn left_neighbourhoods(&self) -> LeftNeighIterator<'_, L> {
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.11s
[INFO] running `Command { std: "docker" "inspect" "7495833113f4422beed3656952c8c47ea5e572562daf9cfa1378031dd5d597f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7495833113f4422beed3656952c8c47ea5e572562daf9cfa1378031dd5d597f7", kill_on_drop: false }`
[INFO] [stdout] 7495833113f4422beed3656952c8c47ea5e572562daf9cfa1378031dd5d597f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e735d781c731d0c604c7beb03b578661e5af134c02cc442d64815c5bd565f1e
[INFO] running `Command { std: "docker" "start" "-a" "5e735d781c731d0c604c7beb03b578661e5af134c02cc442d64815c5bd565f1e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph.rs:118:22
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a>;
[INFO] [stdout]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                 |
[INFO] [stdout]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>;
[INFO] [stdout]     |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph.rs:121:24
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>;
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>;
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph.rs:308:24
[INFO] [stdout]     |
[INFO] [stdout] 308 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 308 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph.rs:313:28
[INFO] [stdout]     |
[INFO] [stdout] 313 |     fn out_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>;
[INFO] [stdout]     |                            ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                            |                                            |
[INFO] [stdout]     |                            this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 313 |     fn out_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>;
[INFO] [stdout]     |                                                                          ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph.rs:316:27
[INFO] [stdout]     |
[INFO] [stdout] 316 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>;
[INFO] [stdout]     |                           ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                           |                                            |
[INFO] [stdout]     |                           this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 316 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>;
[INFO] [stdout]     |                                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/editgraph.rs:168:22
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                 |
[INFO] [stdout]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/editgraph.rs:173:24
[INFO] [stdout]     |
[INFO] [stdout] 173 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 173 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/dtfgraph.rs:71:22
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn vertices<'b>(&'b self) -> Box<dyn Iterator<Item=&Vertex> + 'b> {
[INFO] [stdout]    |                      ^^                                -------    -- the lifetimes get resolved as `'b`
[INFO] [stdout]    |                      |                                 |
[INFO] [stdout]    |                      |                                 the lifetimes get resolved as `'b`
[INFO] [stdout]    |                      this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to consistently use `'b`
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn vertices<'b>(&'b self) -> Box<dyn Iterator<Item=&'b Vertex> + 'b> {
[INFO] [stdout]    |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/dtfgraph.rs:75:24
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn neighbours<'b>(&'b self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'b> {
[INFO] [stdout]    |                        ^^                                           -------    -- the lifetimes get resolved as `'b`
[INFO] [stdout]    |                        |                                            |
[INFO] [stdout]    |                        this lifetime flows to the output            the lifetimes get resolved as `'b`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to consistently use `'b`
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn neighbours<'b>(&'b self, _:&Vertex) -> Box<dyn Iterator<Item=&'b Vertex> + 'b> {
[INFO] [stdout]    |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/dtfgraph.rs:95:24
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]    |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]    |                        |                                            |
[INFO] [stdout]    |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]    |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:100:28
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn out_neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                            ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                            |                                            |
[INFO] [stdout]     |                            this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn out_neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                          ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:105:27
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                           ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                           |                                            |
[INFO] [stdout]     |                           this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:196:22
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn vertices<'a>(&'a self) ->  Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                      ^^                                 -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                  |
[INFO] [stdout]     |                      |                                  the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn vertices<'a>(&'a self) ->  Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                          ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:205:24
[INFO] [stdout]     |
[INFO] [stdout] 205 |     fn neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 205 |     fn neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:230:28
[INFO] [stdout]     |
[INFO] [stdout] 230 |     fn out_neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>  {
[INFO] [stdout]     |                            ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                            |                                            |
[INFO] [stdout]     |                            this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 230 |     fn out_neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>  {
[INFO] [stdout]     |                                                                          ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:234:27
[INFO] [stdout]     |
[INFO] [stdout] 234 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>  {
[INFO] [stdout]     |                           ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                           |                                            |
[INFO] [stdout]     |                           this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 234 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>  {
[INFO] [stdout]     |                                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:271:18
[INFO] [stdout]     |
[INFO] [stdout] 271 |     pub fn layer(&mut self, depth:usize) -> DTFLayer {
[INFO] [stdout]     |                  ^^^^^^^^^                  -------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 271 |     pub fn layer(&mut self, depth:usize) -> DTFLayer<'_> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:383:17
[INFO] [stdout]     |
[INFO] [stdout] 383 |     pub fn arcs(&self) -> DTFArcIterator {
[INFO] [stdout]     |                 ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 383 |     pub fn arcs(&self) -> DTFArcIterator<'_> {
[INFO] [stdout]     |                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:387:20
[INFO] [stdout]     |
[INFO] [stdout] 387 |     pub fn arcs_at(&self, depth:usize) -> DTFArcIterator {
[INFO] [stdout]     |                    ^^^^^                  -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 387 |     pub fn arcs_at(&self, depth:usize) -> DTFArcIterator<'_> {
[INFO] [stdout]     |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:391:35
[INFO] [stdout]     |
[INFO] [stdout] 391 |     pub fn in_neighbourhoods_iter(&self) -> DTFNIterator {
[INFO] [stdout]     |                                   ^^^^^     ------------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 391 |     pub fn in_neighbourhoods_iter(&self) -> DTFNIterator<'_> {
[INFO] [stdout]     |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:395:38
[INFO] [stdout]     |
[INFO] [stdout] 395 |     pub fn in_neighbourhoods_iter_at(&self, depth:usize) -> DTFNIterator {
[INFO] [stdout]     |                                      ^^^^^                  ------------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                                      |
[INFO] [stdout]     |                                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 395 |     pub fn in_neighbourhoods_iter_at(&self, depth:usize) -> DTFNIterator<'_> {
[INFO] [stdout]     |                                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:399:34
[INFO] [stdout]     |
[INFO] [stdout] 399 |     pub fn in_neighbours_at<'a>(&'a self, u:&Vertex, depth:usize) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                                  ^^                                                        -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                                  |                                                         |
[INFO] [stdout]     |                                  this lifetime flows to the output                         the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 399 |     pub fn in_neighbours_at<'a>(&'a self, u:&Vertex, depth:usize) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                                             ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/ordgraph.rs:42:24
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn neighbours<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]    |                        ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]    |                        |                                 |
[INFO] [stdout]    |                        |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]    |                        this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn neighbours<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]    |                                                           ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ordgraph.rs:217:22
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                 |
[INFO] [stdout]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ordgraph.rs:222:24
[INFO] [stdout]     |
[INFO] [stdout] 222 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 222 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/reachgraph.rs:66:22
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn reachables_at(&self, index_u:usize) -> Reachables<DEPTH> {
[INFO] [stdout]    |                      ^^^^^                    ----------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn reachables_at(&self, index_u:usize) -> Reachables<'_, DEPTH> {
[INFO] [stdout]    |                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/reachgraph.rs:89:23
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn reachables(&self, u:&Vertex) -> Reachables<DEPTH> {
[INFO] [stdout]    |                       ^^^^^                ----------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn reachables(&self, u:&Vertex) -> Reachables<'_, DEPTH> {
[INFO] [stdout]    |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/reachgraph.rs:94:28
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn next_reachables(&self, last:&Vertex) -> Option<Reachables<DEPTH>> {
[INFO] [stdout]    |                            ^^^^^                          ----------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn next_reachables(&self, last:&Vertex) -> Option<Reachables<'_, DEPTH>> {
[INFO] [stdout]    |                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/reachgraph.rs:153:22
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                 |
[INFO] [stdout]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/reachgraph.rs:157:24
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn neighbours<'a>(&'a self, _u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                            -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                             |
[INFO] [stdout]     |                        this lifetime flows to the output             the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn neighbours<'a>(&'a self, _u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                       ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/reachgraph.rs:337:17
[INFO] [stdout]     |
[INFO] [stdout] 337 |     pub fn iter(&self) -> ReachIterator<DEPTH> {
[INFO] [stdout]     |                 ^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 337 |     pub fn iter(&self) -> ReachIterator<'_, DEPTH> {
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/degengraph.rs:118:22
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                 |
[INFO] [stdout]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/degengraph.rs:122:24
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/degengraph.rs:302:17
[INFO] [stdout]     |
[INFO] [stdout] 302 |     pub fn iter(&self) -> DegenIterator {
[INFO] [stdout]     |                 ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 302 |     pub fn iter(&self) -> DegenIterator<'_> {
[INFO] [stdout]     |                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/iterators.rs:81:23
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fn neighbourhoods(&self) -> NeighIterator<G>;
[INFO] [stdout]    |                       ^^^^^     ---------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fn neighbourhoods(&self) -> NeighIterator<'_, G>;
[INFO] [stdout]    |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/iterators.rs:85:23
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn neighbourhoods(&self) -> NeighIterator<G> {
[INFO] [stdout]    |                       ^^^^^     ---------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn neighbourhoods(&self) -> NeighIterator<'_, G> {
[INFO] [stdout]    |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/iterators.rs:96:26
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn in_neighbourhoods(&self) -> DiNeighIterator<D>;
[INFO] [stdout]    |                          ^^^^^     ------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn in_neighbourhoods(&self) -> DiNeighIterator<'_, D>;
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/iterators.rs:99:27
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn out_neighbourhoods(&self) -> DiNeighIterator<D>;
[INFO] [stdout]    |                           ^^^^^     ------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn out_neighbourhoods(&self) -> DiNeighIterator<'_, D>;
[INFO] [stdout]    |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:103:26
[INFO] [stdout]     |
[INFO] [stdout] 103 |     fn in_neighbourhoods(&self) -> DiNeighIterator<D> {
[INFO] [stdout]     |                          ^^^^^     ------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 103 |     fn in_neighbourhoods(&self) -> DiNeighIterator<'_, D> {
[INFO] [stdout]     |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:107:27
[INFO] [stdout]     |
[INFO] [stdout] 107 |     fn out_neighbourhoods(&self) -> DiNeighIterator<D> {
[INFO] [stdout]     |                           ^^^^^     ------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 107 |     fn out_neighbourhoods(&self) -> DiNeighIterator<'_, D> {
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:176:14
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn edges(&self) -> EdgeIterator<G>;
[INFO] [stdout]     |              ^^^^^     --------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |              |
[INFO] [stdout]     |              this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn edges(&self) -> EdgeIterator<'_, G>;
[INFO] [stdout]     |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:180:14
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn edges(&self) -> EdgeIterator<G> {
[INFO] [stdout]     |              ^^^^^     --------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |              |
[INFO] [stdout]     |              this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn edges(&self) -> EdgeIterator<'_, G> {
[INFO] [stdout]     |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:247:27
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn vertices_and_edges(&self) -> MixedIterator<G>;
[INFO] [stdout]     |                           ^^^^^     ---------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn vertices_and_edges(&self) -> MixedIterator<'_, G>;
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:251:27
[INFO] [stdout]     |
[INFO] [stdout] 251 |     fn vertices_and_edges(&self) -> MixedIterator<G> {
[INFO] [stdout]     |                           ^^^^^     ---------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 251 |     fn vertices_and_edges(&self) -> MixedIterator<'_, G> {
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:313:13
[INFO] [stdout]     |
[INFO] [stdout] 313 |     fn arcs(&self) -> ArcIterator<D>;
[INFO] [stdout]     |             ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |             |
[INFO] [stdout]     |             this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 313 |     fn arcs(&self) -> ArcIterator<'_, D>;
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:317:13
[INFO] [stdout]     |
[INFO] [stdout] 317 |     fn arcs(&self) -> ArcIterator<D> {
[INFO] [stdout]     |             ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |             |
[INFO] [stdout]     |             this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 317 |     fn arcs(&self) -> ArcIterator<'_, D> {
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:381:27
[INFO] [stdout]     |
[INFO] [stdout] 381 |     pub fn all_depths(G: &'a DTFGraph) -> DTFArcIterator {
[INFO] [stdout]     |                           ^^              -------------- the lifetime gets resolved as `'a`
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 381 |     pub fn all_depths(G: &'a DTFGraph) -> DTFArcIterator<'a> {
[INFO] [stdout]     |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:391:28
[INFO] [stdout]     |
[INFO] [stdout] 391 |     pub fn fixed_depth(G: &'a DTFGraph, depth:usize) -> DTFArcIterator {
[INFO] [stdout]     |                            ^^                           -------------- the lifetime gets resolved as `'a`
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 391 |     pub fn fixed_depth(G: &'a DTFGraph, depth:usize) -> DTFArcIterator<'a> {
[INFO] [stdout]     |                                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:464:28
[INFO] [stdout]     |
[INFO] [stdout] 464 |     fn left_neighbourhoods(&self) -> LeftNeighIterator<L>;
[INFO] [stdout]     |                            ^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 464 |     fn left_neighbourhoods(&self) -> LeftNeighIterator<'_, L>;
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:468:28
[INFO] [stdout]     |
[INFO] [stdout] 468 |     fn left_neighbourhoods(&self) -> LeftNeighIterator<L> {
[INFO] [stdout]     |                            ^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 468 |     fn left_neighbourhoods(&self) -> LeftNeighIterator<'_, L> {
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling graphbench v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph.rs:118:22
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a>;
[INFO] [stdout]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                 |
[INFO] [stdout]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>;
[INFO] [stdout]     |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph.rs:121:24
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>;
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>;
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph.rs:308:24
[INFO] [stdout]     |
[INFO] [stdout] 308 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 308 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph.rs:313:28
[INFO] [stdout]     |
[INFO] [stdout] 313 |     fn out_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>;
[INFO] [stdout]     |                            ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                            |                                            |
[INFO] [stdout]     |                            this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 313 |     fn out_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>;
[INFO] [stdout]     |                                                                          ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/graph.rs:316:27
[INFO] [stdout]     |
[INFO] [stdout] 316 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>;
[INFO] [stdout]     |                           ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                           |                                            |
[INFO] [stdout]     |                           this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 316 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>;
[INFO] [stdout]     |                                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/editgraph.rs:168:22
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                 |
[INFO] [stdout]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/editgraph.rs:173:24
[INFO] [stdout]     |
[INFO] [stdout] 173 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 173 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/dtfgraph.rs:71:22
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn vertices<'b>(&'b self) -> Box<dyn Iterator<Item=&Vertex> + 'b> {
[INFO] [stdout]    |                      ^^                                -------    -- the lifetimes get resolved as `'b`
[INFO] [stdout]    |                      |                                 |
[INFO] [stdout]    |                      |                                 the lifetimes get resolved as `'b`
[INFO] [stdout]    |                      this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to consistently use `'b`
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn vertices<'b>(&'b self) -> Box<dyn Iterator<Item=&'b Vertex> + 'b> {
[INFO] [stdout]    |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/dtfgraph.rs:75:24
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn neighbours<'b>(&'b self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'b> {
[INFO] [stdout]    |                        ^^                                           -------    -- the lifetimes get resolved as `'b`
[INFO] [stdout]    |                        |                                            |
[INFO] [stdout]    |                        this lifetime flows to the output            the lifetimes get resolved as `'b`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to consistently use `'b`
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn neighbours<'b>(&'b self, _:&Vertex) -> Box<dyn Iterator<Item=&'b Vertex> + 'b> {
[INFO] [stdout]    |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/dtfgraph.rs:95:24
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]    |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]    |                        |                                            |
[INFO] [stdout]    |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]    |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:100:28
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn out_neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                            ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                            |                                            |
[INFO] [stdout]     |                            this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn out_neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                          ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:105:27
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                           ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                           |                                            |
[INFO] [stdout]     |                           this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:196:22
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn vertices<'a>(&'a self) ->  Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                      ^^                                 -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                  |
[INFO] [stdout]     |                      |                                  the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn vertices<'a>(&'a self) ->  Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                          ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:205:24
[INFO] [stdout]     |
[INFO] [stdout] 205 |     fn neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 205 |     fn neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:230:28
[INFO] [stdout]     |
[INFO] [stdout] 230 |     fn out_neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>  {
[INFO] [stdout]     |                            ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                            |                                            |
[INFO] [stdout]     |                            this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 230 |     fn out_neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>  {
[INFO] [stdout]     |                                                                          ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:234:27
[INFO] [stdout]     |
[INFO] [stdout] 234 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>  {
[INFO] [stdout]     |                           ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                           |                                            |
[INFO] [stdout]     |                           this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 234 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>  {
[INFO] [stdout]     |                                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:271:18
[INFO] [stdout]     |
[INFO] [stdout] 271 |     pub fn layer(&mut self, depth:usize) -> DTFLayer {
[INFO] [stdout]     |                  ^^^^^^^^^                  -------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 271 |     pub fn layer(&mut self, depth:usize) -> DTFLayer<'_> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:383:17
[INFO] [stdout]     |
[INFO] [stdout] 383 |     pub fn arcs(&self) -> DTFArcIterator {
[INFO] [stdout]     |                 ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 383 |     pub fn arcs(&self) -> DTFArcIterator<'_> {
[INFO] [stdout]     |                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:387:20
[INFO] [stdout]     |
[INFO] [stdout] 387 |     pub fn arcs_at(&self, depth:usize) -> DTFArcIterator {
[INFO] [stdout]     |                    ^^^^^                  -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 387 |     pub fn arcs_at(&self, depth:usize) -> DTFArcIterator<'_> {
[INFO] [stdout]     |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:391:35
[INFO] [stdout]     |
[INFO] [stdout] 391 |     pub fn in_neighbourhoods_iter(&self) -> DTFNIterator {
[INFO] [stdout]     |                                   ^^^^^     ------------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 391 |     pub fn in_neighbourhoods_iter(&self) -> DTFNIterator<'_> {
[INFO] [stdout]     |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:395:38
[INFO] [stdout]     |
[INFO] [stdout] 395 |     pub fn in_neighbourhoods_iter_at(&self, depth:usize) -> DTFNIterator {
[INFO] [stdout]     |                                      ^^^^^                  ------------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                                      |
[INFO] [stdout]     |                                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 395 |     pub fn in_neighbourhoods_iter_at(&self, depth:usize) -> DTFNIterator<'_> {
[INFO] [stdout]     |                                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/dtfgraph.rs:399:34
[INFO] [stdout]     |
[INFO] [stdout] 399 |     pub fn in_neighbours_at<'a>(&'a self, u:&Vertex, depth:usize) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                                  ^^                                                        -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                                  |                                                         |
[INFO] [stdout]     |                                  this lifetime flows to the output                         the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 399 |     pub fn in_neighbours_at<'a>(&'a self, u:&Vertex, depth:usize) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                                             ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/ordgraph.rs:42:24
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn neighbours<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]    |                        ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]    |                        |                                 |
[INFO] [stdout]    |                        |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]    |                        this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn neighbours<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]    |                                                           ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ordgraph.rs:217:22
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                 |
[INFO] [stdout]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/ordgraph.rs:222:24
[INFO] [stdout]     |
[INFO] [stdout] 222 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 222 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/reachgraph.rs:66:22
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn reachables_at(&self, index_u:usize) -> Reachables<DEPTH> {
[INFO] [stdout]    |                      ^^^^^                    ----------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn reachables_at(&self, index_u:usize) -> Reachables<'_, DEPTH> {
[INFO] [stdout]    |                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/reachgraph.rs:89:23
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn reachables(&self, u:&Vertex) -> Reachables<DEPTH> {
[INFO] [stdout]    |                       ^^^^^                ----------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn reachables(&self, u:&Vertex) -> Reachables<'_, DEPTH> {
[INFO] [stdout]    |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/reachgraph.rs:94:28
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn next_reachables(&self, last:&Vertex) -> Option<Reachables<DEPTH>> {
[INFO] [stdout]    |                            ^^^^^                          ----------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn next_reachables(&self, last:&Vertex) -> Option<Reachables<'_, DEPTH>> {
[INFO] [stdout]    |                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/reachgraph.rs:153:22
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                 |
[INFO] [stdout]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 153 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/reachgraph.rs:157:24
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn neighbours<'a>(&'a self, _u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                            -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                             |
[INFO] [stdout]     |                        this lifetime flows to the output             the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn neighbours<'a>(&'a self, _u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                       ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/reachgraph.rs:337:17
[INFO] [stdout]     |
[INFO] [stdout] 337 |     pub fn iter(&self) -> ReachIterator<DEPTH> {
[INFO] [stdout]     |                 ^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 337 |     pub fn iter(&self) -> ReachIterator<'_, DEPTH> {
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/degengraph.rs:118:22
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      |                                 |
[INFO] [stdout]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stdout]     |                      this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                         ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/degengraph.rs:122:24
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stdout]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]     |                        |                                            |
[INFO] [stdout]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/degengraph.rs:302:17
[INFO] [stdout]     |
[INFO] [stdout] 302 |     pub fn iter(&self) -> DegenIterator {
[INFO] [stdout]     |                 ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 302 |     pub fn iter(&self) -> DegenIterator<'_> {
[INFO] [stdout]     |                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/iterators.rs:81:23
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fn neighbourhoods(&self) -> NeighIterator<G>;
[INFO] [stdout]    |                       ^^^^^     ---------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fn neighbourhoods(&self) -> NeighIterator<'_, G>;
[INFO] [stdout]    |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/iterators.rs:85:23
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn neighbourhoods(&self) -> NeighIterator<G> {
[INFO] [stdout]    |                       ^^^^^     ---------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn neighbourhoods(&self) -> NeighIterator<'_, G> {
[INFO] [stdout]    |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/iterators.rs:96:26
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn in_neighbourhoods(&self) -> DiNeighIterator<D>;
[INFO] [stdout]    |                          ^^^^^     ------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn in_neighbourhoods(&self) -> DiNeighIterator<'_, D>;
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/iterators.rs:99:27
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn out_neighbourhoods(&self) -> DiNeighIterator<D>;
[INFO] [stdout]    |                           ^^^^^     ------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn out_neighbourhoods(&self) -> DiNeighIterator<'_, D>;
[INFO] [stdout]    |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:103:26
[INFO] [stdout]     |
[INFO] [stdout] 103 |     fn in_neighbourhoods(&self) -> DiNeighIterator<D> {
[INFO] [stdout]     |                          ^^^^^     ------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 103 |     fn in_neighbourhoods(&self) -> DiNeighIterator<'_, D> {
[INFO] [stdout]     |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:107:27
[INFO] [stdout]     |
[INFO] [stdout] 107 |     fn out_neighbourhoods(&self) -> DiNeighIterator<D> {
[INFO] [stdout]     |                           ^^^^^     ------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 107 |     fn out_neighbourhoods(&self) -> DiNeighIterator<'_, D> {
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:176:14
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn edges(&self) -> EdgeIterator<G>;
[INFO] [stdout]     |              ^^^^^     --------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |              |
[INFO] [stdout]     |              this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn edges(&self) -> EdgeIterator<'_, G>;
[INFO] [stdout]     |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:180:14
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn edges(&self) -> EdgeIterator<G> {
[INFO] [stdout]     |              ^^^^^     --------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |              |
[INFO] [stdout]     |              this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn edges(&self) -> EdgeIterator<'_, G> {
[INFO] [stdout]     |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:247:27
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn vertices_and_edges(&self) -> MixedIterator<G>;
[INFO] [stdout]     |                           ^^^^^     ---------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn vertices_and_edges(&self) -> MixedIterator<'_, G>;
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:251:27
[INFO] [stdout]     |
[INFO] [stdout] 251 |     fn vertices_and_edges(&self) -> MixedIterator<G> {
[INFO] [stdout]     |                           ^^^^^     ---------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 251 |     fn vertices_and_edges(&self) -> MixedIterator<'_, G> {
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:313:13
[INFO] [stdout]     |
[INFO] [stdout] 313 |     fn arcs(&self) -> ArcIterator<D>;
[INFO] [stdout]     |             ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |             |
[INFO] [stdout]     |             this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 313 |     fn arcs(&self) -> ArcIterator<'_, D>;
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:317:13
[INFO] [stdout]     |
[INFO] [stdout] 317 |     fn arcs(&self) -> ArcIterator<D> {
[INFO] [stdout]     |             ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |             |
[INFO] [stdout]     |             this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 317 |     fn arcs(&self) -> ArcIterator<'_, D> {
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:381:27
[INFO] [stdout]     |
[INFO] [stdout] 381 |     pub fn all_depths(G: &'a DTFGraph) -> DTFArcIterator {
[INFO] [stdout]     |                           ^^              -------------- the lifetime gets resolved as `'a`
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 381 |     pub fn all_depths(G: &'a DTFGraph) -> DTFArcIterator<'a> {
[INFO] [stdout]     |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:391:28
[INFO] [stdout]     |
[INFO] [stdout] 391 |     pub fn fixed_depth(G: &'a DTFGraph, depth:usize) -> DTFArcIterator {
[INFO] [stdout]     |                            ^^                           -------------- the lifetime gets resolved as `'a`
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 391 |     pub fn fixed_depth(G: &'a DTFGraph, depth:usize) -> DTFArcIterator<'a> {
[INFO] [stdout]     |                                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:464:28
[INFO] [stdout]     |
[INFO] [stdout] 464 |     fn left_neighbourhoods(&self) -> LeftNeighIterator<L>;
[INFO] [stdout]     |                            ^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 464 |     fn left_neighbourhoods(&self) -> LeftNeighIterator<'_, L>;
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/iterators.rs:468:28
[INFO] [stdout]     |
[INFO] [stdout] 468 |     fn left_neighbourhoods(&self) -> LeftNeighIterator<L> {
[INFO] [stdout]     |                            ^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 468 |     fn left_neighbourhoods(&self) -> LeftNeighIterator<'_, L> {
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 14.26s
[INFO] running `Command { std: "docker" "inspect" "5e735d781c731d0c604c7beb03b578661e5af134c02cc442d64815c5bd565f1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e735d781c731d0c604c7beb03b578661e5af134c02cc442d64815c5bd565f1e", kill_on_drop: false }`
[INFO] [stdout] 5e735d781c731d0c604c7beb03b578661e5af134c02cc442d64815c5bd565f1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] adc7f6944cf03f0ca2735a463c0cb412082af867f4fc2dcbb91ad3bf949ba5c2
[INFO] running `Command { std: "docker" "start" "-a" "adc7f6944cf03f0ca2735a463c0cb412082af867f4fc2dcbb91ad3bf949ba5c2", kill_on_drop: false }`
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/graph.rs:118:22
[INFO] [stderr]     |
[INFO] [stderr] 118 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a>;
[INFO] [stderr]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                      |                                 |
[INFO] [stderr]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stderr]     |                      this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 118 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>;
[INFO] [stderr]     |                                                         ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/graph.rs:121:24
[INFO] [stderr]     |
[INFO] [stderr] 121 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>;
[INFO] [stderr]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                        |                                            |
[INFO] [stderr]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 121 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>;
[INFO] [stderr]     |                                                                      ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/graph.rs:308:24
[INFO] [stderr]     |
[INFO] [stderr] 308 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stderr]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                        |                                            |
[INFO] [stderr]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 308 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stderr]     |                                                                      ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/graph.rs:313:28
[INFO] [stderr]     |
[INFO] [stderr] 313 |     fn out_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>;
[INFO] [stderr]     |                            ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                            |                                            |
[INFO] [stderr]     |                            this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 313 |     fn out_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>;
[INFO] [stderr]     |                                                                          ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/graph.rs:316:27
[INFO] [stderr]     |
[INFO] [stderr] 316 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>;
[INFO] [stderr]     |                           ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                           |                                            |
[INFO] [stderr]     |                           this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 316 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>;
[INFO] [stderr]     |                                                                         ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/editgraph.rs:168:22
[INFO] [stderr]     |
[INFO] [stderr] 168 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stderr]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                      |                                 |
[INFO] [stderr]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stderr]     |                      this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 168 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stderr]     |                                                         ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/editgraph.rs:173:24
[INFO] [stderr]     |
[INFO] [stderr] 173 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stderr]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                        |                                            |
[INFO] [stderr]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 173 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stderr]     |                                                                      ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/dtfgraph.rs:71:22
[INFO] [stderr]    |
[INFO] [stderr] 71 |     fn vertices<'b>(&'b self) -> Box<dyn Iterator<Item=&Vertex> + 'b> {
[INFO] [stderr]    |                      ^^                                -------    -- the lifetimes get resolved as `'b`
[INFO] [stderr]    |                      |                                 |
[INFO] [stderr]    |                      |                                 the lifetimes get resolved as `'b`
[INFO] [stderr]    |                      this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to consistently use `'b`
[INFO] [stderr]    |
[INFO] [stderr] 71 |     fn vertices<'b>(&'b self) -> Box<dyn Iterator<Item=&'b Vertex> + 'b> {
[INFO] [stderr]    |                                                         ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/dtfgraph.rs:75:24
[INFO] [stderr]    |
[INFO] [stderr] 75 |     fn neighbours<'b>(&'b self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'b> {
[INFO] [stderr]    |                        ^^                                           -------    -- the lifetimes get resolved as `'b`
[INFO] [stderr]    |                        |                                            |
[INFO] [stderr]    |                        this lifetime flows to the output            the lifetimes get resolved as `'b`
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to consistently use `'b`
[INFO] [stderr]    |
[INFO] [stderr] 75 |     fn neighbours<'b>(&'b self, _:&Vertex) -> Box<dyn Iterator<Item=&'b Vertex> + 'b> {
[INFO] [stderr]    |                                                                      ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/dtfgraph.rs:95:24
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stderr]    |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]    |                        |                                            |
[INFO] [stderr]    |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stderr]    |                                                                      ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/dtfgraph.rs:100:28
[INFO] [stderr]     |
[INFO] [stderr] 100 |     fn out_neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stderr]     |                            ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                            |                                            |
[INFO] [stderr]     |                            this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 100 |     fn out_neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stderr]     |                                                                          ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/dtfgraph.rs:105:27
[INFO] [stderr]     |
[INFO] [stderr] 105 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stderr]     |                           ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                           |                                            |
[INFO] [stderr]     |                           this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 105 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stderr]     |                                                                         ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/dtfgraph.rs:196:22
[INFO] [stderr]     |
[INFO] [stderr] 196 |     fn vertices<'a>(&'a self) ->  Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stderr]     |                      ^^                                 -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                      |                                  |
[INFO] [stderr]     |                      |                                  the lifetimes get resolved as `'a`
[INFO] [stderr]     |                      this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 196 |     fn vertices<'a>(&'a self) ->  Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stderr]     |                                                          ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/dtfgraph.rs:205:24
[INFO] [stderr]     |
[INFO] [stderr] 205 |     fn neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stderr]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                        |                                            |
[INFO] [stderr]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 205 |     fn neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stderr]     |                                                                      ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/dtfgraph.rs:230:28
[INFO] [stderr]     |
[INFO] [stderr] 230 |     fn out_neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>  {
[INFO] [stderr]     |                            ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                            |                                            |
[INFO] [stderr]     |                            this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 230 |     fn out_neighbours<'a>(&'a self, _:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>  {
[INFO] [stderr]     |                                                                          ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/dtfgraph.rs:234:27
[INFO] [stderr]     |
[INFO] [stderr] 234 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a>  {
[INFO] [stderr]     |                           ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                           |                                            |
[INFO] [stderr]     |                           this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 234 |     fn in_neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a>  {
[INFO] [stderr]     |                                                                         ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/dtfgraph.rs:271:18
[INFO] [stderr]     |
[INFO] [stderr] 271 |     pub fn layer(&mut self, depth:usize) -> DTFLayer {
[INFO] [stderr]     |                  ^^^^^^^^^                  -------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 271 |     pub fn layer(&mut self, depth:usize) -> DTFLayer<'_> {
[INFO] [stderr]     |                                                     ++++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/dtfgraph.rs:383:17
[INFO] [stderr]     |
[INFO] [stderr] 383 |     pub fn arcs(&self) -> DTFArcIterator {
[INFO] [stderr]     |                 ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 383 |     pub fn arcs(&self) -> DTFArcIterator<'_> {
[INFO] [stderr]     |                                         ++++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/dtfgraph.rs:387:20
[INFO] [stderr]     |
[INFO] [stderr] 387 |     pub fn arcs_at(&self, depth:usize) -> DTFArcIterator {
[INFO] [stderr]     |                    ^^^^^                  -------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 387 |     pub fn arcs_at(&self, depth:usize) -> DTFArcIterator<'_> {
[INFO] [stderr]     |                                                         ++++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/dtfgraph.rs:391:35
[INFO] [stderr]     |
[INFO] [stderr] 391 |     pub fn in_neighbourhoods_iter(&self) -> DTFNIterator {
[INFO] [stderr]     |                                   ^^^^^     ------------ the lifetime gets resolved as `'_`
[INFO] [stderr]     |                                   |
[INFO] [stderr]     |                                   this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 391 |     pub fn in_neighbourhoods_iter(&self) -> DTFNIterator<'_> {
[INFO] [stderr]     |                                                         ++++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/dtfgraph.rs:395:38
[INFO] [stderr]     |
[INFO] [stderr] 395 |     pub fn in_neighbourhoods_iter_at(&self, depth:usize) -> DTFNIterator {
[INFO] [stderr]     |                                      ^^^^^                  ------------ the lifetime gets resolved as `'_`
[INFO] [stderr]     |                                      |
[INFO] [stderr]     |                                      this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 395 |     pub fn in_neighbourhoods_iter_at(&self, depth:usize) -> DTFNIterator<'_> {
[INFO] [stderr]     |                                                                         ++++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/dtfgraph.rs:399:34
[INFO] [stderr]     |
[INFO] [stderr] 399 |     pub fn in_neighbours_at<'a>(&'a self, u:&Vertex, depth:usize) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stderr]     |                                  ^^                                                        -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                                  |                                                         |
[INFO] [stderr]     |                                  this lifetime flows to the output                         the lifetimes get resolved as `'a`
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 399 |     pub fn in_neighbours_at<'a>(&'a self, u:&Vertex, depth:usize) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stderr]     |                                                                                             ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/ordgraph.rs:42:24
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn neighbours<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stderr]    |                        ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]    |                        |                                 |
[INFO] [stderr]    |                        |                                 the lifetimes get resolved as `'a`
[INFO] [stderr]    |                        this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn neighbours<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stderr]    |                                                           ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/ordgraph.rs:217:22
[INFO] [stderr]     |
[INFO] [stderr] 217 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stderr]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                      |                                 |
[INFO] [stderr]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stderr]     |                      this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 217 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stderr]     |                                                         ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/ordgraph.rs:222:24
[INFO] [stderr]     |
[INFO] [stderr] 222 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stderr]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                        |                                            |
[INFO] [stderr]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 222 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stderr]     |                                                                      ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/reachgraph.rs:66:22
[INFO] [stderr]    |
[INFO] [stderr] 66 |     fn reachables_at(&self, index_u:usize) -> Reachables<DEPTH> {
[INFO] [stderr]    |                      ^^^^^                    ----------------- the lifetime gets resolved as `'_`
[INFO] [stderr]    |                      |
[INFO] [stderr]    |                      this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 66 |     fn reachables_at(&self, index_u:usize) -> Reachables<'_, DEPTH> {
[INFO] [stderr]    |                                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/reachgraph.rs:89:23
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn reachables(&self, u:&Vertex) -> Reachables<DEPTH> {
[INFO] [stderr]    |                       ^^^^^                ----------------- the lifetime gets resolved as `'_`
[INFO] [stderr]    |                       |
[INFO] [stderr]    |                       this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn reachables(&self, u:&Vertex) -> Reachables<'_, DEPTH> {
[INFO] [stderr]    |                                                       +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/reachgraph.rs:94:28
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn next_reachables(&self, last:&Vertex) -> Option<Reachables<DEPTH>> {
[INFO] [stderr]    |                            ^^^^^                          ----------------- the lifetime gets resolved as `'_`
[INFO] [stderr]    |                            |
[INFO] [stderr]    |                            this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn next_reachables(&self, last:&Vertex) -> Option<Reachables<'_, DEPTH>> {
[INFO] [stderr]    |                                                                      +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/reachgraph.rs:153:22
[INFO] [stderr]     |
[INFO] [stderr] 153 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stderr]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                      |                                 |
[INFO] [stderr]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stderr]     |                      this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 153 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stderr]     |                                                         ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/reachgraph.rs:157:24
[INFO] [stderr]     |
[INFO] [stderr] 157 |     fn neighbours<'a>(&'a self, _u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stderr]     |                        ^^                                            -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                        |                                             |
[INFO] [stderr]     |                        this lifetime flows to the output             the lifetimes get resolved as `'a`
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 157 |     fn neighbours<'a>(&'a self, _u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stderr]     |                                                                       ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/reachgraph.rs:337:17
[INFO] [stderr]     |
[INFO] [stderr] 337 |     pub fn iter(&self) -> ReachIterator<DEPTH> {
[INFO] [stderr]     |                 ^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 337 |     pub fn iter(&self) -> ReachIterator<'_, DEPTH> {
[INFO] [stderr]     |                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/degengraph.rs:118:22
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] running 33 tests
[INFO] [stderr] 118 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stderr]     |                      ^^                                -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                      |                                 |
[INFO] [stderr]     |                      |                                 the lifetimes get resolved as `'a`
[INFO] [stderr]     |                      this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 118 |     fn vertices<'a>(&'a self) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stderr]     |                                                         ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/degengraph.rs:122:24
[INFO] [stderr]     |
[INFO] [stderr] 122 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&Vertex> + 'a> {
[INFO] [stderr]     |                        ^^                                           -------    -- the lifetimes get resolved as `'a`
[INFO] [stderr]     |                        |                                            |
[INFO] [stderr]     |                        this lifetime flows to the output            the lifetimes get resolved as `'a`
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 122 |     fn neighbours<'a>(&'a self, u:&Vertex) -> Box<dyn Iterator<Item=&'a Vertex> + 'a> {
[INFO] [stderr]     |                                                                      ++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/degengraph.rs:302:17
[INFO] [stderr]     |
[INFO] [stderr] 302 |     pub fn iter(&self) -> DegenIterator {
[INFO] [stderr]     |                 ^^^^^     ------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 302 |     pub fn iter(&self) -> DegenIterator<'_> {
[INFO] [stderr]     |                                        ++++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/iterators.rs:81:23
[INFO] [stderr]    |
[INFO] [stderr] 81 |     fn neighbourhoods(&self) -> NeighIterator<G>;
[INFO] [stderr]    |                       ^^^^^     ---------------- the lifetime gets resolved as `'_`
[INFO] [stderr]    |                       |
[INFO] [stderr]    |                       this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 81 |     fn neighbourhoods(&self) -> NeighIterator<'_, G>;
[INFO] [stderr]    |                                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/iterators.rs:85:23
[INFO] [stderr]    |
[INFO] [stderr] 85 |     fn neighbourhoods(&self) -> NeighIterator<G> {
[INFO] [stderr]    |                       ^^^^^     ---------------- the lifetime gets resolved as `'_`
[INFO] [stderr]    |                       |
[INFO] [stderr]    |                       this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 85 |     fn neighbourhoods(&self) -> NeighIterator<'_, G> {
[INFO] [stderr]    |                                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/iterators.rs:96:26
[INFO] [stderr]    |
[INFO] [stderr] 96 |     fn in_neighbourhoods(&self) -> DiNeighIterator<D>;
[INFO] [stderr]    |                          ^^^^^     ------------------ the lifetime gets resolved as `'_`
[INFO] [stderr]    |                          |
[INFO] [stderr]    |                          this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 96 |     fn in_neighbourhoods(&self) -> DiNeighIterator<'_, D>;
[INFO] [stderr]    |                                                    +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/iterators.rs:99:27
[INFO] [stderr]    |
[INFO] [stderr] 99 |     fn out_neighbourhoods(&self) -> DiNeighIterator<D>;
[INFO] [stderr]    |                           ^^^^^     ------------------ the lifetime gets resolved as `'_`
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 99 |     fn out_neighbourhoods(&self) -> DiNeighIterator<'_, D>;
[INFO] [stderr]    |                                                     +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/iterators.rs:103:26
[INFO] [stderr]     |
[INFO] [stderr] 103 |     fn in_neighbourhoods(&self) -> DiNeighIterator<D> {
[INFO] [stderr]     |                          ^^^^^     ------------------ the lifetime gets resolved as `'_`
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 103 |     fn in_neighbourhoods(&self) -> DiNeighIterator<'_, D> {
[INFO] [stderr]     |                                                    +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/iterators.rs:107:27
[INFO] [stderr]     |
[INFO] [stderr] 107 |     fn out_neighbourhoods(&self) -> DiNeighIterator<D> {
[INFO] [stderr]     |                           ^^^^^     ------------------ the lifetime gets resolved as `'_`
[INFO] [stderr]     |                           |
[INFO] [stderr]     |                           this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 107 |     fn out_neighbourhoods(&self) -> DiNeighIterator<'_, D> {
[INFO] [stderr]     |                                                     +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/iterators.rs:176:14
[INFO] [stderr]     |
[INFO] [stderr] 176 |     fn edges(&self) -> EdgeIterator<G>;
[INFO] [stderr]     |              ^^^^^     --------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |              |
[INFO] [stderr]     |              this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 176 |     fn edges(&self) -> EdgeIterator<'_, G>;
[INFO] [stderr]     |                                     +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/iterators.rs:180:14
[INFO] [stderr]     |
[INFO] [stderr] 180 |     fn edges(&self) -> EdgeIterator<G> {
[INFO] [stderr]     |              ^^^^^     --------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |              |
[INFO] [stderr]     |              this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 180 |     fn edges(&self) -> EdgeIterator<'_, G> {
[INFO] [stderr]     |                                     +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/iterators.rs:247:27
[INFO] [stderr]     |
[INFO] [stderr] 247 |     fn vertices_and_edges(&self) -> MixedIterator<G>;
[INFO] [stderr]     |                           ^^^^^     ---------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |                           |
[INFO] [stderr]     |                           this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 247 |     fn vertices_and_edges(&self) -> MixedIterator<'_, G>;
[INFO] [stderr]     |                                                   +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/iterators.rs:251:27
[INFO] [stderr]     |
[INFO] [stderr] 251 |     fn vertices_and_edges(&self) -> MixedIterator<G> {
[INFO] [stderr]     |                           ^^^^^     ---------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |                           |
[INFO] [stderr]     |                           this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 251 |     fn vertices_and_edges(&self) -> MixedIterator<'_, G> {
[INFO] [stderr]     |                                                   +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/iterators.rs:313:13
[INFO] [stderr]     |
[INFO] [stderr] 313 |     fn arcs(&self) -> ArcIterator<D>;
[INFO] [stderr]     |             ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |             |
[INFO] [stderr]     |             this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 313 |     fn arcs(&self) -> ArcIterator<'_, D>;
[INFO] [stderr]     |                                   +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/iterators.rs:317:13
[INFO] [stderr]     |
[INFO] [stderr] 317 |     fn arcs(&self) -> ArcIterator<D> {
[INFO] [stderr]     |             ^^^^^     -------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |             |
[INFO] [stderr]     |             this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 317 |     fn arcs(&self) -> ArcIterator<'_, D> {
[INFO] [stderr]     |                                   +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/iterators.rs:381:27
[INFO] [stderr]     |
[INFO] [stderr] 381 |     pub fn all_depths(G: &'a DTFGraph) -> DTFArcIterator {
[INFO] [stderr]     |                           ^^              -------------- the lifetime gets resolved as `'a`
[INFO] [stderr]     |                           |
[INFO] [stderr]     |                           this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 381 |     pub fn all_depths(G: &'a DTFGraph) -> DTFArcIterator<'a> {
[INFO] [stderr]     |                                                         ++++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/iterators.rs:391:28
[INFO] [stderr]     |
[INFO] [stderr] 391 |     pub fn fixed_depth(G: &'a DTFGraph, depth:usize) -> DTFArcIterator {
[INFO] [stderr]     |                            ^^                           -------------- the lifetime gets resolved as `'a`
[INFO] [stderr]     |                            |
[INFO] [stderr]     |                            this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 391 |     pub fn fixed_depth(G: &'a DTFGraph, depth:usize) -> DTFArcIterator<'a> {
[INFO] [stderr]     |                                                                       ++++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/iterators.rs:464:28
[INFO] [stderr]     |
[INFO] [stderr] 464 |     fn left_neighbourhoods(&self) -> LeftNeighIterator<L>;
[INFO] [stderr]     |                            ^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |                            |
[INFO] [stderr]     |                            this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 464 |     fn left_neighbourhoods(&self) -> LeftNeighIterator<'_, L>;
[INFO] [stderr]     |                                                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/iterators.rs:468:28
[INFO] [stderr]     |
[INFO] [stderr] 468 |     fn left_neighbourhoods(&self) -> LeftNeighIterator<L> {
[INFO] [stderr]     |                            ^^^^^     -------------------- the lifetime gets resolved as `'_`
[INFO] [stderr]     |                            |
[INFO] [stderr]     |                            this lifetime flows to the output
[INFO] [stdout] test algorithms::graph::test::components ... ok
[INFO] [stderr]     |
[INFO] [stdout] test algorithms::graph::test::bipartite ... ok
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout] test dtfgraph::test::edge_subgraph ... ok
[INFO] [stderr]     |
[INFO] [stdout] test dtfgraph::test::iteration ... ok
[INFO] [stderr] 468 |     fn left_neighbourhoods(&self) -> LeftNeighIterator<'_, L> {
[INFO] [stdout] test degengraph::test::consistency ... ok
[INFO] [stderr]     |                                                        +++
[INFO] [stdout] test editgraph::test::N_iteration ... ok
[INFO] [stderr] 
[INFO] [stdout] test editgraph::test::basic_operations ... ok
[INFO] [stderr] warning: `graphbench` (lib) generated 50 warnings
[INFO] [stdout] test degengraph::test::count_cliques ... ok
[INFO] [stderr] warning: `graphbench` (lib test) generated 50 warnings (50 duplicates)
[INFO] [stdout] test degengraph::test::order_iteration ... ok
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stdout] test degengraph::test::basics ... ok
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/graphbench-c0f28d12dbe53506)
[INFO] [stdout] test editgraph::test::components ... ok
[INFO] [stdout] test editgraph::test::contract_pair ... ok
[INFO] [stdout] test editgraph::test::contract ... ok
[INFO] [stdout] test editgraph::test::edge_iteration ... ok
[INFO] [stdout] test dtfgraph::test::domset ... ok
[INFO] [stdout] test editgraph::test::isolates_and_loops ... ok
[INFO] [stdout] test editgraph::test::equality ... ok
[INFO] [stdout] test editgraph::test::neighbourhoods ... ok
[INFO] [stdout] test iterators::test::mixed_iterator ... ok
[INFO] [stdout] test io::test::read_graph ... ok
[INFO] [stdout] test iterators::test::N_iterator ... ok
[INFO] [stdout] test reachgraph::test::consistency ... ok
[INFO] [stdout] test reachgraph::test::order_iteration ... ok
[INFO] [stdout] test iterators::test::edge_iterator ... ok
[INFO] [stdout] test reachgraph::test::count_cliques ... ok
[INFO] [stdout] test ordgraph::test::wreach_graph ... ok
[INFO] [stdout] test ordgraph::test::count_cliques ... ok
[INFO] [stdout] test ordgraph::test::order_iteration ... ok
[INFO] [stdout] test ordgraph::test::consistency ... ok
[INFO] [stdout] test editgraph::test::disj_union ... ok
[INFO] [stdout] test iterators::test::wreach_iterator ... ok
[INFO] [stdout] test ordgraph::test::sreach ... ok
[INFO] [stdout] test io::test::write_graph ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- io::test::write_graph stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'io::test::write_graph' panicked at src/io.rs:190:60:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x608bc65b3ae2 - std::backtrace_rs::backtrace::libunwind::trace::hd39b1f53d3cf9745
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x608bc65b3ae2 - std::backtrace_rs::backtrace::trace_unsynchronized::he91d9a75d4e3972b
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x608bc65b3ae2 - std::sys::backtrace::_print_fmt::hca46938f8c6e22cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x608bc65b3ae2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::ha499add612cccf8e
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x608bc65d9513 - core::fmt::rt::Argument::fmt::hd21145b75a833b7a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x608bc65d9513 - core::fmt::write::hb10c956f5235c8a4
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/mod.rs:1465:25
[INFO] [stdout]    6:     0x608bc65b0cc3 - std::io::default_write_fmt::hdb7615052be2ba4d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x608bc65b0cc3 - std::io::Write::write_fmt::he1bcd251ec6e4153
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x608bc65b3932 - std::sys::backtrace::BacktraceLock::print::hb47c770ef659fd10
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x608bc65b504c - std::panicking::default_hook::{{closure}}::hdda8afb9d457a22c
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x608bc65b4ea2 - std::panicking::default_hook::h7c46b44874fe5c9a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x608bc6570b44 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h178a5fcedee41e2f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x608bc6570b44 - test::test_main_with_exit_callback::{{closure}}::h951a41e0149d6d5d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x608bc65b5a2b - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h13602080f5b63276
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x608bc65b5a2b - std::panicking::rust_panic_with_hook::ha6cb99ed099eb1c5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x608bc65b57fa - std::panicking::begin_panic_handler::{{closure}}::he11808bc797ee921
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x608bc65b3fd9 - std::sys::backtrace::__rust_end_short_backtrace::h9418807cb7346258
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:168:18
[INFO] [stdout]   17:     0x608bc65b548d - __rustc[18fb429eef004894]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x608bc65d7d50 - core::panicking::panic_fmt::hd890aeb12c3a3fc3
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x608bc65d80f6 - core::result::unwrap_failed::h31c9775ec1a50121
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/result.rs:1761:5
[INFO] [stdout]   20:     0x608bc6531895 - core::result::Result<T,E>::unwrap::hf5816a24a442aed7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/result.rs:1167:23
[INFO] [stdout]   21:     0x608bc6531895 - graphbench::io::test::write_graph::hfd4d6c6c6e7a66b7
[INFO] [stdout]                                at /opt/rustwide/workdir/src/io.rs:190:60
[INFO] [stdout]   22:     0x608bc6524b09 - graphbench::io::test::write_graph::{{closure}}::h496e7e734b0259d3
[INFO] [stdout]                                at /opt/rustwide/workdir/src/io.rs:185:21
[INFO] [stdout]   23:     0x608bc6524b09 - core::ops::function::FnOnce::call_once::he6164d4c9ee8bd59
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x608bc65762cb - core::ops::function::FnOnce::call_once::h2869fb5b0a2b0bdc
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x608bc65762cb - test::__rust_begin_short_backtrace::h7dd7142bd62fa711
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:648:18
[INFO] [stdout]   26:     0x608bc65754be - test::run_test_in_process::{{closure}}::h43a753f038d36b3f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:74
[INFO] [stdout]   27:     0x608bc65754be - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h0ca95dd3e12d1e16
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x608bc65754be - std::panicking::catch_unwind::do_call::he308587d70ac34ba
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   29:     0x608bc65754be - std::panicking::catch_unwind::h30dcba31973e8fb0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   30:     0x608bc65754be - std::panic::catch_unwind::hfb68364e5621fbee
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x608bc65754be - test::run_test_in_process::hcdcc2977903b998a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:27
[INFO] [stdout]   32:     0x608bc65754be - test::run_test::{{closure}}::h544a6550958c5d14
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:592:43
[INFO] [stdout]   33:     0x608bc6539034 - test::run_test::{{closure}}::hb172e48ebe2b92c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:622:41
[INFO] [stdout]   34:     0x608bc6539034 - std::sys::backtrace::__rust_begin_short_backtrace::h7e79d8706638bea0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:152:18
[INFO] [stdout]   35:     0x608bc653ca0a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc4a275f1e71b8ab0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x608bc653ca0a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h01ed0d242df78cfd
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x608bc653ca0a - std::panicking::catch_unwind::do_call::h052f373fb905fee0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   38:     0x608bc653ca0a - std::panicking::catch_unwind::hb425d20c8ffb09c8
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   39:     0x608bc653ca0a - std::panic::catch_unwind::ha0d5dfbf18fdeda5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x608bc653ca0a - std::thread::Builder::spawn_unchecked_::{{closure}}::hbe79182bd37949c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x608bc653ca0a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc096c4a06972fde5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x608bc65b8987 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h47377e27fb938a26
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   43:     0x608bc65b8987 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h72f1fe5d095abf57
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   44:     0x608bc65b8987 - std::sys::pal::unix::thread::Thread::new::thread_start::h0a4d8e1b9c0d38cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/pal/unix/thread.rs:97:17
[INFO] [stdout]   45:     0x7d1976e42aa4 - <unknown>
[INFO] [stdout]   46:     0x7d1976ecfa34 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     io::test::write_graph
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 32 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "adc7f6944cf03f0ca2735a463c0cb412082af867f4fc2dcbb91ad3bf949ba5c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adc7f6944cf03f0ca2735a463c0cb412082af867f4fc2dcbb91ad3bf949ba5c2", kill_on_drop: false }`
[INFO] [stdout] adc7f6944cf03f0ca2735a463c0cb412082af867f4fc2dcbb91ad3bf949ba5c2
