[INFO] cloning repository https://github.com/stefan-blair/blelloch-scan
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stefan-blair/blelloch-scan" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstefan-blair%2Fblelloch-scan", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstefan-blair%2Fblelloch-scan'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e52ce6c105f099322fe1a6d8b8e2906fb75d43fe
[INFO] checking stefan-blair/blelloch-scan against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstefan-blair%2Fblelloch-scan" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/stefan-blair/blelloch-scan on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/stefan-blair/blelloch-scan
[INFO] finished tweaking git repo https://github.com/stefan-blair/blelloch-scan
[INFO] tweaked toml for git repo https://github.com/stefan-blair/blelloch-scan written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/stefan-blair/blelloch-scan already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64fd4232767077ee881fd626ab676165fd80b431f108404e9a72de06dfe8131e
[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" "64fd4232767077ee881fd626ab676165fd80b431f108404e9a72de06dfe8131e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64fd4232767077ee881fd626ab676165fd80b431f108404e9a72de06dfe8131e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64fd4232767077ee881fd626ab676165fd80b431f108404e9a72de06dfe8131e", kill_on_drop: false }`
[INFO] [stdout] 64fd4232767077ee881fd626ab676165fd80b431f108404e9a72de06dfe8131e
[INFO] running `Command { std: "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" "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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d645387dcfaa53f81c41cfb56d4ada8b27be13ca55f090ba78b5e3b49d617a9
[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" "1d645387dcfaa53f81c41cfb56d4ada8b27be13ca55f090ba78b5e3b49d617a9", kill_on_drop: false }`
[INFO] [stderr]     Checking segmented_scan v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]   --> src/segmented_scan.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub fn get(&self, index: usize) -> (u64, bool) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hillis_steel_scan`
[INFO] [stdout]    --> src/segmented_scan.rs:205:8
[INFO] [stdout]     |
[INFO] [stdout] 205 | pub fn hillis_steel_scan(num_threads: usize, v: &Vec<Vec<u64>>) -> Option<Vec<Vec<u64>>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `divide_and_conquer_scan`
[INFO] [stdout]    --> src/segmented_scan.rs:268:8
[INFO] [stdout]     |
[INFO] [stdout] 268 | pub fn divide_and_conquer_scan(num_threads: usize, v: &Vec<Vec<u64>>) -> Option<Vec<Vec<u64>>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `handle`
[INFO] [stdout]   --> src/thread_pool.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     handle: thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `num_threads`
[INFO] [stdout]    --> src/thread_pool.rs:136:12
[INFO] [stdout]     |
[INFO] [stdout] 136 |     pub fn num_threads(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `broadcast`
[INFO] [stdout]    --> src/thread_pool.rs:140:12
[INFO] [stdout]     |
[INFO] [stdout] 140 |     pub fn broadcast<S: 'static + Send + Clone, R: 'static + Send>(&mut self, msg: S, function: ThreadFunction<S, R>) -> MassReceiver<R>{
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `main_memory`
[INFO] [stdout]  --> src/split_vector.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     main_memory: Arc<Vec<T>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `last`
[INFO] [stdout]   --> src/split_vector.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn last(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `last_mut`
[INFO] [stdout]   --> src/split_vector.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn last_mut(&mut self) -> Option<&mut T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_size`
[INFO] [stdout]   --> src/split_vector.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn with_size(size: usize) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `take_vec`
[INFO] [stdout]   --> src/split_vector.rs:89:12
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn take_vec(self) -> Option<Vec<T>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ref_count`
[INFO] [stdout]   --> src/split_vector.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn ref_count(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LARGE_COUNT`
[INFO] [stdout]  --> src/main.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | const LARGE_COUNT: u64 = 128;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]   --> src/segmented_scan.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub fn get(&self, index: usize) -> (u64, bool) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `handle`
[INFO] [stdout]   --> src/thread_pool.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     handle: thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `num_threads`
[INFO] [stdout]    --> src/thread_pool.rs:136:12
[INFO] [stdout]     |
[INFO] [stdout] 136 |     pub fn num_threads(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `main_memory`
[INFO] [stdout]  --> src/split_vector.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     main_memory: Arc<Vec<T>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `last`
[INFO] [stdout]   --> src/split_vector.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn last(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `last_mut`
[INFO] [stdout]   --> src/split_vector.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn last_mut(&mut self) -> Option<&mut T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `take_vec`
[INFO] [stdout]   --> src/split_vector.rs:89:12
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn take_vec(self) -> Option<Vec<T>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LARGE_COUNT`
[INFO] [stdout]  --> src/main.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | const LARGE_COUNT: u64 = 128;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "1d645387dcfaa53f81c41cfb56d4ada8b27be13ca55f090ba78b5e3b49d617a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d645387dcfaa53f81c41cfb56d4ada8b27be13ca55f090ba78b5e3b49d617a9", kill_on_drop: false }`
[INFO] [stdout] 1d645387dcfaa53f81c41cfb56d4ada8b27be13ca55f090ba78b5e3b49d617a9