[INFO] updating cached repository https://github.com/Logarithmus/min-spanning-tree-and-shortest-path
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7321917e4ec6971273949263dc745cd6645fc58c
[INFO] checking Logarithmus/min-spanning-tree-and-shortest-path against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLogarithmus%2Fmin-spanning-tree-and-shortest-path" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Logarithmus/min-spanning-tree-and-shortest-path 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/Logarithmus/min-spanning-tree-and-shortest-path
[INFO] finished tweaking git repo https://github.com/Logarithmus/min-spanning-tree-and-shortest-path
[INFO] tweaked toml for git repo https://github.com/Logarithmus/min-spanning-tree-and-shortest-path written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Logarithmus/min-spanning-tree-and-shortest-path already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 05bfbdb6dab6275e3ff1d3a589d6a3b50316219bfa6bc31875860577e44e44e9
[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" "05bfbdb6dab6275e3ff1d3a589d6a3b50316219bfa6bc31875860577e44e44e9"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking spanning_tree_and_shortest_path v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `start`
[INFO] [stderr]    --> src/graph.rs:147:28
[INFO] [stderr]     |
[INFO] [stderr] 147 |     pub fn dijkstra(&self, start: usize) -> Vec<Vec<HalfEdge>> {
[INFO] [stderr]     |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DisjointSubsets`
[INFO] [stderr]  --> src/disjoint_subsets.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct DisjointSubsets {
[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/disjoint_subsets.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn new(size: usize) -> Self {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_set`
[INFO] [stderr]   --> src/disjoint_subsets.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn find_set(&mut self, elem: usize) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `union_sets`
[INFO] [stderr]   --> src/disjoint_subsets.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn union_sets(&mut self, elem1: usize, elem2: usize) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `total_weight`
[INFO] [stderr]   --> src/graph.rs:93:5
[INFO] [stderr]    |
[INFO] [stderr] 93 |     pub fn total_weight(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `min_span_tree_kruskal`
[INFO] [stderr]    --> src/graph.rs:130:5
[INFO] [stderr]     |
[INFO] [stderr] 130 |     pub fn min_span_tree_kruskal(&self) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dijkstra`
[INFO] [stderr]    --> src/graph.rs:147:5
[INFO] [stderr]     |
[INFO] [stderr] 147 |     pub fn dijkstra(&self, start: usize) -> Vec<Vec<HalfEdge>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/heap.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn new(cmp: F) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]   --> src/heap.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `graph1`
[INFO] [stderr]  --> src/test.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn graph1() -> Graph {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `graph1_mst`
[INFO] [stderr]   --> src/test.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn graph1_mst() -> Graph {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `graph_a`
[INFO] [stderr]   --> src/test.rs:58:8
[INFO] [stderr]    |
[INFO] [stderr] 58 | pub fn graph_a() -> Graph {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `graph_b`
[INFO] [stderr]   --> src/test.rs:76:8
[INFO] [stderr]    |
[INFO] [stderr] 76 | pub fn graph_b() -> Graph {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `graph_c`
[INFO] [stderr]   --> src/test.rs:92:8
[INFO] [stderr]    |
[INFO] [stderr] 92 | pub fn graph_c() -> Graph {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `graph_d`
[INFO] [stderr]    --> src/test.rs:107:8
[INFO] [stderr]     |
[INFO] [stderr] 107 | pub fn graph_d() -> Graph {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `start`
[INFO] [stderr]    --> src/graph.rs:147:28
[INFO] [stderr]     |
[INFO] [stderr] 147 |     pub fn dijkstra(&self, start: usize) -> Vec<Vec<HalfEdge>> {
[INFO] [stderr]     |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dijkstra`
[INFO] [stderr]    --> src/graph.rs:147:5
[INFO] [stderr]     |
[INFO] [stderr] 147 |     pub fn dijkstra(&self, start: usize) -> Vec<Vec<HalfEdge>> {
[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/heap.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn new(cmp: F) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]   --> src/heap.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `graph1_mst`
[INFO] [stderr]   --> src/test.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn graph1_mst() -> Graph {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `graph_a`
[INFO] [stderr]   --> src/test.rs:58:8
[INFO] [stderr]    |
[INFO] [stderr] 58 | pub fn graph_a() -> Graph {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `graph_b`
[INFO] [stderr]   --> src/test.rs:76:8
[INFO] [stderr]    |
[INFO] [stderr] 76 | pub fn graph_b() -> Graph {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `graph_c`
[INFO] [stderr]   --> src/test.rs:92:8
[INFO] [stderr]    |
[INFO] [stderr] 92 | pub fn graph_c() -> Graph {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `graph_d`
[INFO] [stderr]    --> src/test.rs:107:8
[INFO] [stderr]     |
[INFO] [stderr] 107 | pub fn graph_d() -> Graph {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `"docker" "inspect" "05bfbdb6dab6275e3ff1d3a589d6a3b50316219bfa6bc31875860577e44e44e9"`
[INFO] running `"docker" "rm" "-f" "05bfbdb6dab6275e3ff1d3a589d6a3b50316219bfa6bc31875860577e44e44e9"`
[INFO] [stdout] 05bfbdb6dab6275e3ff1d3a589d6a3b50316219bfa6bc31875860577e44e44e9