[INFO] cloning repository https://github.com/schulke-214/algorithms
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/schulke-214/algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fschulke-214%2Falgorithms"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fschulke-214%2Falgorithms'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c7e0d019f8b94ab94b2bd8b5e92beccace89a89a
[INFO] checking schulke-214/algorithms against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fschulke-214%2Falgorithms" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/schulke-214/algorithms on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/schulke-214/algorithms
[INFO] finished tweaking git repo https://github.com/schulke-214/algorithms
[INFO] tweaked toml for git repo https://github.com/schulke-214/algorithms written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/schulke-214/algorithms already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ae5775d03314df6e94e626b342bc2d7afc314e3b557c5585ca4a12f7c59270a0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "ae5775d03314df6e94e626b342bc2d7afc314e3b557c5585ca4a12f7c59270a0"`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking rand_jitter v0.1.2
[INFO] [stderr]     Checking getrandom v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]     Checking rand_os v0.1.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking algorithms v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Sub`
[INFO] [stderr]  --> src/data_structures/graph.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::ops::{Add, Sub};
[INFO] [stderr]   |                     ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/data_structures/graph.rs:12:25
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn are_adjacent(&self, n: Vertex, m: Vertex) -> bool {
[INFO] [stderr]    |                            ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `m`
[INFO] [stderr]   --> src/data_structures/graph.rs:12:36
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn are_adjacent(&self, n: Vertex, m: Vertex) -> bool {
[INFO] [stderr]    |                                       ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `are_adjacent`
[INFO] [stderr]   --> src/data_structures/graph.rs:12:2
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn are_adjacent(&self, n: Vertex, m: Vertex) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/data_structures/graph.rs:32:2
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn new(name: String) -> Vertex {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/data_structures/graph.rs:50:2
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn new(from: Uuid, to: Uuid, name: Option<String>, weight: Option<W>) -> Edge<W> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Sub`
[INFO] [stderr]  --> src/data_structures/graph.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::ops::{Add, Sub};
[INFO] [stderr]   |                     ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/data_structures/graph.rs:12:25
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn are_adjacent(&self, n: Vertex, m: Vertex) -> bool {
[INFO] [stderr]    |                            ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `m`
[INFO] [stderr]   --> src/data_structures/graph.rs:12:36
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn are_adjacent(&self, n: Vertex, m: Vertex) -> bool {
[INFO] [stderr]    |                                       ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `are_adjacent`
[INFO] [stderr]   --> src/data_structures/graph.rs:12:2
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn are_adjacent(&self, n: Vertex, m: Vertex) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/data_structures/graph.rs:32:2
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn new(name: String) -> Vertex {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/data_structures/graph.rs:50:2
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn new(from: Uuid, to: Uuid, name: Option<String>, weight: Option<W>) -> Edge<W> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.44s
[INFO] running `"docker" "inspect" "ae5775d03314df6e94e626b342bc2d7afc314e3b557c5585ca4a12f7c59270a0"`
[INFO] running `"docker" "rm" "-f" "ae5775d03314df6e94e626b342bc2d7afc314e3b557c5585ca4a12f7c59270a0"`
[INFO] [stdout] ae5775d03314df6e94e626b342bc2d7afc314e3b557c5585ca4a12f7c59270a0