[INFO] cloning repository https://github.com/tinyrustprogs/quick-sort-iterative
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tinyrustprogs/quick-sort-iterative" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftinyrustprogs%2Fquick-sort-iterative", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftinyrustprogs%2Fquick-sort-iterative'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6f710e4d8d5b54f40163fbf9832395a71c21307e
[INFO] testing tinyrustprogs/quick-sort-iterative against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftinyrustprogs%2Fquick-sort-iterative" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tinyrustprogs/quick-sort-iterative on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tinyrustprogs/quick-sort-iterative
[INFO] finished tweaking git repo https://github.com/tinyrustprogs/quick-sort-iterative
[INFO] tweaked toml for git repo https://github.com/tinyrustprogs/quick-sort-iterative written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/tinyrustprogs/quick-sort-iterative already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1e7adf4b0406b073a26fa2bb92913a3e6e429fab22c2704c0bc5c6ff872e50ad
[INFO] running `Command { std: "docker" "start" "-a" "1e7adf4b0406b073a26fa2bb92913a3e6e429fab22c2704c0bc5c6ff872e50ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e7adf4b0406b073a26fa2bb92913a3e6e429fab22c2704c0bc5c6ff872e50ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e7adf4b0406b073a26fa2bb92913a3e6e429fab22c2704c0bc5c6ff872e50ad", kill_on_drop: false }`
[INFO] [stdout] 1e7adf4b0406b073a26fa2bb92913a3e6e429fab22c2704c0bc5c6ff872e50ad
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 11a4bec49cd8a98327186078264fb4709cfebadfb2fc7977877f7a584e860a96
[INFO] running `Command { std: "docker" "start" "-a" "11a4bec49cd8a98327186078264fb4709cfebadfb2fc7977877f7a584e860a96", kill_on_drop: false }`
[INFO] [stderr]    Compiling quick-sort-iterative v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `swap`
[INFO] [stdout]  --> src/main.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn swap<'a, T: Copy /*+Debug*/>(array: &'a mut [T], a: usize, b: usize) {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sort_one_1`
[INFO] [stdout]   --> src/main.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn sort_one_1<'a, T: Copy + PartialOrd>(v: &'a mut [T], low: usize, high: usize) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sort_one_2`
[INFO] [stdout]   --> src/main.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn sort_one_2<'a, T: Copy + PartialOrd /*+Debug*/>(
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add_intervals`
[INFO] [stdout]   --> src/main.rs:56:4
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn add_intervals<'a, 'b>(stack: &'a mut Vec<Interval>, middle: usize, last: &'b Interval) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `low`
[INFO] [stdout]   --> src/main.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 |     low: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Interval` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/main.rs:73:10
[INFO] [stdout]    |
[INFO] [stdout] 73 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `high`
[INFO] [stdout]   --> src/main.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     high: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Interval` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/main.rs:73:10
[INFO] [stdout]    |
[INFO] [stdout] 73 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sort_1`
[INFO] [stdout]    --> src/main.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn sort_1<'a, T: Copy + PartialOrd>(v: &'a mut [T]) {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sort_2`
[INFO] [stdout]    --> src/main.rs:103:4
[INFO] [stdout]     |
[INFO] [stdout] 103 | fn sort_2<'a, T: Copy + PartialOrd /*+Debug*/>(v: &'a mut [T]) {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `quick-sort-iterative` due to 2 previous errors; 8 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "11a4bec49cd8a98327186078264fb4709cfebadfb2fc7977877f7a584e860a96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11a4bec49cd8a98327186078264fb4709cfebadfb2fc7977877f7a584e860a96", kill_on_drop: false }`
[INFO] [stdout] 11a4bec49cd8a98327186078264fb4709cfebadfb2fc7977877f7a584e860a96