[INFO] updating cached repository https://github.com/faxe1008/rust-sorting
[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] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b88d9e9c127984c4b4984287ebcbcddf60603c78
[INFO] checking faxe1008/rust-sorting against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaxe1008%2Frust-sorting" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/faxe1008/rust-sorting on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/faxe1008/rust-sorting
[INFO] finished tweaking git repo https://github.com/faxe1008/rust-sorting
[INFO] tweaked toml for git repo https://github.com/faxe1008/rust-sorting written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/faxe1008/rust-sorting already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "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] f27312f0cbb74dfd15a224473588025135cdc7207185cdbf9f9bba133e82f522
[INFO] running `"docker" "start" "-a" "f27312f0cbb74dfd15a224473588025135cdc7207185cdbf9f9bba133e82f522"`
[INFO] [stderr]     Checking sorting v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `while` condition
[INFO] [stderr]   --> src/main.rs:13:10
[INFO] [stderr]    |
[INFO] [stderr] 13 |     while(!sorted)
[INFO] [stderr]    |          ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/main.rs:18:15
[INFO] [stderr]    |
[INFO] [stderr] 18 |             if(arr[x]  > r_elem)
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]   --> src/main.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |         for len in 0..*x{
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_len`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let mut index = i;
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bubble_sort`
[INFO] [stderr]   --> src/main.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn bubble_sort(arr: &mut [u16]) {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `insertion_sort`
[INFO] [stderr]   --> src/main.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn insertion_sort(arr: &mut [u16]){
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `while` condition
[INFO] [stderr]   --> src/main.rs:13:10
[INFO] [stderr]    |
[INFO] [stderr] 13 |     while(!sorted)
[INFO] [stderr]    |          ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/main.rs:18:15
[INFO] [stderr]    |
[INFO] [stderr] 18 |             if(arr[x]  > r_elem)
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]   --> src/main.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |         for len in 0..*x{
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_len`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let mut index = i;
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bubble_sort`
[INFO] [stderr]   --> src/main.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn bubble_sort(arr: &mut [u16]) {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `insertion_sort`
[INFO] [stderr]   --> src/main.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn insertion_sort(arr: &mut [u16]){
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.39s
[INFO] running `"docker" "inspect" "f27312f0cbb74dfd15a224473588025135cdc7207185cdbf9f9bba133e82f522"`
[INFO] running `"docker" "rm" "-f" "f27312f0cbb74dfd15a224473588025135cdc7207185cdbf9f9bba133e82f522"`
[INFO] [stdout] f27312f0cbb74dfd15a224473588025135cdc7207185cdbf9f9bba133e82f522