[INFO] cloning repository https://github.com/ad3ldev/rusty-sort
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ad3ldev/rusty-sort" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fad3ldev%2Frusty-sort", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fad3ldev%2Frusty-sort'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c5726234108fd411241d965797a1257bf5bb9ac7
[INFO] checking ad3ldev/rusty-sort against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fad3ldev%2Frusty-sort" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ad3ldev/rusty-sort on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ad3ldev/rusty-sort
[INFO] finished tweaking git repo https://github.com/ad3ldev/rusty-sort
[INFO] tweaked toml for git repo https://github.com/ad3ldev/rusty-sort written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ad3ldev/rusty-sort already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 237266d250c8de32eec2834b8f139f69391c5a4349b178e589f6d80f2f4b7ab8
[INFO] running `Command { std: "docker" "start" "-a" "237266d250c8de32eec2834b8f139f69391c5a4349b178e589f6d80f2f4b7ab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "237266d250c8de32eec2834b8f139f69391c5a4349b178e589f6d80f2f4b7ab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "237266d250c8de32eec2834b8f139f69391c5a4349b178e589f6d80f2f4b7ab8", kill_on_drop: false }`
[INFO] [stdout] 237266d250c8de32eec2834b8f139f69391c5a4349b178e589f6d80f2f4b7ab8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cab274b36f39b6ef87a3ff6b78e514f71fb37800d6259dba095a0e6c22fa44d0
[INFO] running `Command { std: "docker" "start" "-a" "cab274b36f39b6ef87a3ff6b78e514f71fb37800d6259dba095a0e6c22fa44d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]     Checking getrandom v0.2.9
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]     Checking rusty-sort v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ParallelIterator` is imported redundantly
[INFO] [stdout]   --> src/bubble_sort.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use rayon::iter::ParallelIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 22 | use rayon::prelude::*;
[INFO] [stdout]    |     ----------------- the item `ParallelIterator` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ParallelIterator` is imported redundantly
[INFO] [stdout]   --> src/bubble_sort.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use rayon::iter::ParallelIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 22 | use rayon::prelude::*;
[INFO] [stdout]    |     ----------------- the item `ParallelIterator` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `serial_merge` is never used
[INFO] [stdout]  --> src/merge_sort.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn serial_merge(arr: &mut [u64], start: usize, mid: usize, end: usize) {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `serial_merge_sort_helper` is never used
[INFO] [stdout]   --> src/merge_sort.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn serial_merge_sort_helper(arr: &mut [u64], left: usize, right: usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `serial_merge_sort` is never used
[INFO] [stdout]   --> src/merge_sort.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn serial_merge_sort(arr: &mut [u64]) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parallel_merge_sort_helper` is never used
[INFO] [stdout]    --> src/merge_sort.rs:122:4
[INFO] [stdout]     |
[INFO] [stdout] 122 | fn parallel_merge_sort_helper(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parallel_merge_sort` is never used
[INFO] [stdout]    --> src/merge_sort.rs:159:8
[INFO] [stdout]     |
[INFO] [stdout] 159 | pub fn parallel_merge_sort(arr: &mut [u64], threads_num: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `serial_merge` is never used
[INFO] [stdout]  --> src/merge_sort.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn serial_merge(arr: &mut [u64], start: usize, mid: usize, end: usize) {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `serial_merge_sort_helper` is never used
[INFO] [stdout]   --> src/merge_sort.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn serial_merge_sort_helper(arr: &mut [u64], left: usize, right: usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `serial_merge_sort` is never used
[INFO] [stdout]   --> src/merge_sort.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn serial_merge_sort(arr: &mut [u64]) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parallel_merge_sort_helper` is never used
[INFO] [stdout]    --> src/merge_sort.rs:122:4
[INFO] [stdout]     |
[INFO] [stdout] 122 | fn parallel_merge_sort_helper(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parallel_merge_sort` is never used
[INFO] [stdout]    --> src/merge_sort.rs:159:8
[INFO] [stdout]     |
[INFO] [stdout] 159 | pub fn parallel_merge_sort(arr: &mut [u64], threads_num: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.07s
[INFO] running `Command { std: "docker" "inspect" "cab274b36f39b6ef87a3ff6b78e514f71fb37800d6259dba095a0e6c22fa44d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cab274b36f39b6ef87a3ff6b78e514f71fb37800d6259dba095a0e6c22fa44d0", kill_on_drop: false }`
[INFO] [stdout] cab274b36f39b6ef87a3ff6b78e514f71fb37800d6259dba095a0e6c22fa44d0