[INFO] cloning repository https://github.com/WytzeBreukel/Modified_COST_CODE
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WytzeBreukel/Modified_COST_CODE" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWytzeBreukel%2FModified_COST_CODE", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWytzeBreukel%2FModified_COST_CODE'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7bf550cd675eacf04c8285e6c59caa153a46fc21
[INFO] checking WytzeBreukel/Modified_COST_CODE against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWytzeBreukel%2FModified_COST_CODE" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/WytzeBreukel/Modified_COST_CODE on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/WytzeBreukel/Modified_COST_CODE
[INFO] finished tweaking git repo https://github.com/WytzeBreukel/Modified_COST_CODE
[INFO] tweaked toml for git repo https://github.com/WytzeBreukel/Modified_COST_CODE written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/WytzeBreukel/Modified_COST_CODE already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 885ddc48cc711c58f68187eb6572708d9c64ad2de293519c4681ffd47f194271
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "885ddc48cc711c58f68187eb6572708d9c64ad2de293519c4681ffd47f194271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "885ddc48cc711c58f68187eb6572708d9c64ad2de293519c4681ffd47f194271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "885ddc48cc711c58f68187eb6572708d9c64ad2de293519c4681ffd47f194271", kill_on_drop: false }`
[INFO] [stdout] 885ddc48cc711c58f68187eb6572708d9c64ad2de293519c4681ffd47f194271
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3f7a893d1480eae4ec659e7f75cc84645f1ab5a847f4c1a720e749ce60992c5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b3f7a893d1480eae4ec659e7f75cc84645f1ab5a847f4c1a720e749ce60992c5", kill_on_drop: false }`
[INFO] [stderr]     Checking memmap v0.5.2
[INFO] [stderr]    Compiling lz4-sys v1.9.2
[INFO] [stderr]     Checking docopt v1.1.0
[INFO] [stderr]     Checking lz4 v1.23.2
[INFO] [stderr]     Checking COST v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/to_hilbert.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut timer = std::time::Instant::now();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `union_find`
[INFO] [stdout]   --> src/bin/union_find.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn union_find<G: EdgeMapper>(graph: &G, nodes: u32) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `label_propagation`
[INFO] [stdout]   --> src/bin/label_prop.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn label_propagation<G: EdgeMapper>(graph: &G, nodes: u32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/to_hilbert.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut timer = std::time::Instant::now();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `union_find`
[INFO] [stdout]   --> src/bin/union_find.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn union_find<G: EdgeMapper>(graph: &G, nodes: u32) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pagerank`
[INFO] [stdout]   --> src/bin/pagerank.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn pagerank<G: EdgeMapper>(graph: &G, nodes: u32, alpha: f32) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `label_propagation`
[INFO] [stdout]   --> src/bin/label_prop.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn label_propagation<G: EdgeMapper>(graph: &G, nodes: u32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pagerank`
[INFO] [stdout]   --> src/bin/pagerank.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn pagerank<G: EdgeMapper>(graph: &G, nodes: u32, alpha: f32) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.67s
[INFO] running `Command { std: "docker" "inspect" "b3f7a893d1480eae4ec659e7f75cc84645f1ab5a847f4c1a720e749ce60992c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3f7a893d1480eae4ec659e7f75cc84645f1ab5a847f4c1a720e749ce60992c5", kill_on_drop: false }`
[INFO] [stdout] b3f7a893d1480eae4ec659e7f75cc84645f1ab5a847f4c1a720e749ce60992c5