[INFO] cloning repository https://github.com/SabaunT/clrs-algos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SabaunT/clrs-algos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSabaunT%2Fclrs-algos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSabaunT%2Fclrs-algos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b635b7a9b3c2b454bea21b017618040a5f57cb89
[INFO] checking SabaunT/clrs-algos against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSabaunT%2Fclrs-algos" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SabaunT/clrs-algos on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SabaunT/clrs-algos
[INFO] finished tweaking git repo https://github.com/SabaunT/clrs-algos
[INFO] tweaked toml for git repo https://github.com/SabaunT/clrs-algos written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/SabaunT/clrs-algos already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04661218e969304825d81424ecbcdde874f1738cc898b2cfa1dca835bba1a185
[INFO] running `Command { std: "docker" "start" "-a" "04661218e969304825d81424ecbcdde874f1738cc898b2cfa1dca835bba1a185", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04661218e969304825d81424ecbcdde874f1738cc898b2cfa1dca835bba1a185", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04661218e969304825d81424ecbcdde874f1738cc898b2cfa1dca835bba1a185", kill_on_drop: false }`
[INFO] [stdout] 04661218e969304825d81424ecbcdde874f1738cc898b2cfa1dca835bba1a185
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e8fefb724480edc1f6dd03211e5dea49420c8bf73743cf745e4a652a5e572d4
[INFO] running `Command { std: "docker" "start" "-a" "3e8fefb724480edc1f6dd03211e5dea49420c8bf73743cf745e4a652a5e572d4", kill_on_drop: false }`
[INFO] [stderr]     Checking clrs_algos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::get_sort_tests`
[INFO] [stdout]  --> src/bubble_sort.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::get_sort_tests;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::get_sort_tests`
[INFO] [stdout]  --> src/insertion_sort.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::get_sort_tests;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::get_sort_tests`
[INFO] [stdout]  --> src/merge_sort.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::get_sort_tests;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bubble_sort_1`
[INFO] [stdout]  --> src/bubble_sort.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn bubble_sort_1<T: PartialOrd + Clone>(src: &mut [T]) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bubble_sort_2`
[INFO] [stdout]   --> src/bubble_sort.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn bubble_sort_2<T: PartialOrd + Clone>(src: &mut [T]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `insertion_sort_1`
[INFO] [stdout]  --> src/insertion_sort.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn insertion_sort_1<T: PartialOrd + Clone>(src: &mut [T]) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `insertion_sort_2`
[INFO] [stdout]   --> src/insertion_sort.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn insertion_sort_2<T: PartialOrd + Copy>(src: &mut [T]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `insertion_sort_3`
[INFO] [stdout]   --> src/insertion_sort.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn insertion_sort_3<T: PartialOrd + Clone>(src: &mut [T]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_max_sum_subarray`
[INFO] [stdout]  --> src/max_subarray.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn find_max_sum_subarray<T: PartialOrd + Copy + Default + Add<Output = T>>(src: &[T]) -> (Option<&[T]>, T) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_max_sum_subarray_dc`
[INFO] [stdout]   --> src/max_subarray.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn find_max_sum_subarray_dc<T: Ord + Copy + Default + Add<Output = T>>(src: &[T]) -> (Option<&[T]>, T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_max_sum_cross_subarray`
[INFO] [stdout]   --> src/max_subarray.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn find_max_sum_cross_subarray<T: Ord + Copy + Default + Add<Output = T>>(src: &[T], mid: usize) -> (Option<&[T]>, T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `merge_sort`
[INFO] [stdout]  --> src/merge_sort.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn merge_sort<T: PartialOrd + Clone + Default>(src: &mut [T]) {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `merge_sort_impl`
[INFO] [stdout]   --> src/merge_sort.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn merge_sort_impl<T: PartialOrd + Clone + Default>(src: &mut [T]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `merge`
[INFO] [stdout]   --> src/merge_sort.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn merge<T: PartialOrd + Clone + Default>(src: &mut [T], mid: usize) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `merge_clrs`
[INFO] [stdout]   --> src/merge_sort.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn merge_clrs<T: PartialOrd + Clone + Default>(src: &mut [T], mid: usize) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_sort_tests`
[INFO] [stdout]  --> src/lib.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn get_sort_tests() -> [(Vec<i32>, Vec<i32>); 17] {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> src/max_subarray.rs:53:10
[INFO] [stdout]    |
[INFO] [stdout] 53 |         .into_iter() // could be an error in rust > 1.48
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 53 |         .iter() // could be an error in rust > 1.48
[INFO] [stdout]    |          ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 52 |     *IntoIterator::into_iter([l, r, c]) // could be an error in rust > 1.48
[INFO] [stdout]    |      ++++++++++++++++++++++++         ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `merge_clrs`
[INFO] [stdout]   --> src/merge_sort.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn merge_clrs<T: PartialOrd + Clone + Default>(src: &mut [T], mid: usize) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> src/max_subarray.rs:53:10
[INFO] [stdout]    |
[INFO] [stdout] 53 |         .into_iter() // could be an error in rust > 1.48
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 53 |         .iter() // could be an error in rust > 1.48
[INFO] [stdout]    |          ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 52 |     *IntoIterator::into_iter([l, r, c]) // could be an error in rust > 1.48
[INFO] [stdout]    |      ++++++++++++++++++++++++         ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "3e8fefb724480edc1f6dd03211e5dea49420c8bf73743cf745e4a652a5e572d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e8fefb724480edc1f6dd03211e5dea49420c8bf73743cf745e4a652a5e572d4", kill_on_drop: false }`
[INFO] [stdout] 3e8fefb724480edc1f6dd03211e5dea49420c8bf73743cf745e4a652a5e572d4