[INFO] updating cached repository https://github.com/oberien/factorio-cluster-finder
[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] 7d6d999424c2e10471e8f34560b45454404104a9
[INFO] checking oberien/factorio-cluster-finder against master#783139bd8fc3b94fac9a1bf81bba2c506e8221b6 for pr-72644
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foberien%2Ffactorio-cluster-finder" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oberien/factorio-cluster-finder on toolchain 783139bd8fc3b94fac9a1bf81bba2c506e8221b6
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/oberien/factorio-cluster-finder
[INFO] finished tweaking git repo https://github.com/oberien/factorio-cluster-finder
[INFO] tweaked toml for git repo https://github.com/oberien/factorio-cluster-finder written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/oberien/factorio-cluster-finder already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] af011d3dc9053da800479237d2e95f5dded63743f6d2f599f51461f3b2dbfa0c
[INFO] running `"docker" "start" "-a" "af011d3dc9053da800479237d2e95f5dded63743f6d2f599f51461f3b2dbfa0c"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ordermap v0.3.5
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]    Compiling peg v0.5.7
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]    Compiling factorio-cluster-finder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stderr]  --> src/main.rs:1:24
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stderr]  --> src/main.rs:1:24
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `EdgeIndex`
[INFO] [stderr]   --> src/graphviz/graph.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub type EdgeIndex = graph::EdgeIndex<GraphIndex>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/graphviz/graph.rs:37:12
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn new(id: String, attributes: HashMap<String, String>) -> Node {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `label_map`
[INFO] [stderr]    --> src/graphviz/graph.rs:117:12
[INFO] [stderr]     |
[INFO] [stderr] 117 |     pub fn label_map(&self) -> Ref<HashMap<String, NodeIndex>> {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `write`
[INFO] [stderr]    --> src/graphviz/graph.rs:160:12
[INFO] [stderr]     |
[INFO] [stderr] 160 |     pub fn write<W: Write>(&self, writer: &mut W) -> Result<()> {
[INFO] [stderr]     |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `nodes`
[INFO] [stderr]   --> src/graphviz/builder.rs:79:12
[INFO] [stderr]    |
[INFO] [stderr] 79 |     pub fn nodes(mut self, nodes: Vec<Node>) -> DotGraphBuilder {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `edges`
[INFO] [stderr]   --> src/graphviz/builder.rs:84:12
[INFO] [stderr]    |
[INFO] [stderr] 84 |     pub fn edges(mut self, edges: Vec<(Edge, NodeIndex, NodeIndex)>) -> DotGraphBuilder {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     env_logger::init();
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `EdgeIndex`
[INFO] [stderr]   --> src/graphviz/graph.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub type EdgeIndex = graph::EdgeIndex<GraphIndex>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/graphviz/graph.rs:37:12
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn new(id: String, attributes: HashMap<String, String>) -> Node {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `label_map`
[INFO] [stderr]    --> src/graphviz/graph.rs:117:12
[INFO] [stderr]     |
[INFO] [stderr] 117 |     pub fn label_map(&self) -> Ref<HashMap<String, NodeIndex>> {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `write`
[INFO] [stderr]    --> src/graphviz/graph.rs:160:12
[INFO] [stderr]     |
[INFO] [stderr] 160 |     pub fn write<W: Write>(&self, writer: &mut W) -> Result<()> {
[INFO] [stderr]     |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `nodes`
[INFO] [stderr]   --> src/graphviz/builder.rs:79:12
[INFO] [stderr]    |
[INFO] [stderr] 79 |     pub fn nodes(mut self, nodes: Vec<Node>) -> DotGraphBuilder {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `edges`
[INFO] [stderr]   --> src/graphviz/builder.rs:84:12
[INFO] [stderr]    |
[INFO] [stderr] 84 |     pub fn edges(mut self, edges: Vec<(Edge, NodeIndex, NodeIndex)>) -> DotGraphBuilder {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     env_logger::init();
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.45s
[INFO] running `"docker" "inspect" "af011d3dc9053da800479237d2e95f5dded63743f6d2f599f51461f3b2dbfa0c"`
[INFO] running `"docker" "rm" "-f" "af011d3dc9053da800479237d2e95f5dded63743f6d2f599f51461f3b2dbfa0c"`
[INFO] [stdout] af011d3dc9053da800479237d2e95f5dded63743f6d2f599f51461f3b2dbfa0c