[INFO] updating cached repository https://github.com/benbachem/se02
[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] [stderr] From https://github.com/benbachem/se02
[INFO] [stderr]    a80bc84..85e89f5  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 85e89f51d32c6755f5a5f1b7c6f18e81066e3bbe
[INFO] checking benbachem/se02 against master#d939f708d960161d23b964309ba68ff207fc0ead for pr-70087
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenbachem%2Fse02" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/benbachem/se02 on toolchain d939f708d960161d23b964309ba68ff207fc0ead
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d939f708d960161d23b964309ba68ff207fc0ead" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/benbachem/se02
[INFO] finished tweaking git repo https://github.com/benbachem/se02
[INFO] tweaked toml for git repo https://github.com/benbachem/se02 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/benbachem/se02 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d939f708d960161d23b964309ba68ff207fc0ead" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+d939f708d960161d23b964309ba68ff207fc0ead" "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] ab75ad675c0e915668451acb1c8a1e4a5ebda29fbcc9dfd88e2670228600d2c4
[INFO] running `"docker" "start" "-a" "ab75ad675c0e915668451acb1c8a1e4a5ebda29fbcc9dfd88e2670228600d2c4"`
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking algos-data-structures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `j`
[INFO] [stderr]   --> src/sorting_algorithms.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     for j in 1..list.len() {
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_j`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bubblesort`
[INFO] [stderr]   --> src/sorting_algorithms.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn bubblesort<T: PartialOrd + Copy>(list: &mut Vec<T>) {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `j`
[INFO] [stderr]   --> src/sorting_algorithms.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     for j in 1..list.len() {
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_j`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_sorted`
[INFO] [stderr]  --> src/sorting_algorithms.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn is_sorted<T: PartialOrd>(input: &Vec<T>) -> bool {
[INFO] [stderr]   |    ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `stupid_sort`
[INFO] [stderr]   --> src/sorting_algorithms.rs:20:4
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn stupid_sort<T: PartialOrd + Copy>(list: &mut Vec<T>) {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bubblesort`
[INFO] [stderr]   --> src/sorting_algorithms.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn bubblesort<T: PartialOrd + Copy>(list: &mut Vec<T>) {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `selection_sort`
[INFO] [stderr]   --> src/sorting_algorithms.rs:50:4
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn selection_sort<T: PartialOrd + Copy>(list: &mut Vec<T>) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `insertion_sort`
[INFO] [stderr]   --> src/sorting_algorithms.rs:69:4
[INFO] [stderr]    |
[INFO] [stderr] 69 | fn insertion_sort<T: PartialOrd + Copy>(list: &mut Vec<T>) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `merge_sort`
[INFO] [stderr]   --> src/sorting_algorithms.rs:87:4
[INFO] [stderr]    |
[INFO] [stderr] 87 | fn merge_sort<T: PartialOrd + Copy>(list: &mut Vec<T>) {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `quick_sort`
[INFO] [stderr]    --> src/sorting_algorithms.rs:127:4
[INFO] [stderr]     |
[INFO] [stderr] 127 | fn quick_sort<T: PartialOrd + Copy>(list: &mut Vec<T>) {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Node`
[INFO] [stderr]  --> src/structures/queue.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Node {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Queue`
[INFO] [stderr]  --> src/structures/queue.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct Queue {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/structures/queue.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `push`
[INFO] [stderr]   --> src/structures/queue.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn push(&mut self, value: i32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pop`
[INFO] [stderr]   --> src/structures/queue.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn pop(&mut self) -> Option<i32> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Node`
[INFO] [stderr]  --> src/structures/stack.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Node {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Stack`
[INFO] [stderr]  --> src/structures/stack.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct Stack {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/structures/stack.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `push`
[INFO] [stderr]   --> src/structures/stack.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn push(&mut self, value: i32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pop`
[INFO] [stderr]   --> src/structures/stack.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn pop(&mut self) -> Option<i32> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.15s
[INFO] running `"docker" "inspect" "ab75ad675c0e915668451acb1c8a1e4a5ebda29fbcc9dfd88e2670228600d2c4"`
[INFO] running `"docker" "rm" "-f" "ab75ad675c0e915668451acb1c8a1e4a5ebda29fbcc9dfd88e2670228600d2c4"`
[INFO] [stdout] ab75ad675c0e915668451acb1c8a1e4a5ebda29fbcc9dfd88e2670228600d2c4