[INFO] cloning repository https://github.com/brandon-gong/neche
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brandon-gong/neche" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrandon-gong%2Fneche", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrandon-gong%2Fneche'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9e3a114c91c815a3ee0db24749f9604d8bebd206
[INFO] testing brandon-gong/neche against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrandon-gong%2Fneche" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brandon-gong/neche on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/brandon-gong/neche
[INFO] finished tweaking git repo https://github.com/brandon-gong/neche
[INFO] tweaked toml for git repo https://github.com/brandon-gong/neche written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/brandon-gong/neche already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80e1b31e825c8e5fca1153f4357608fe81708b6b2532c75ad2056768ebdd5aba
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "80e1b31e825c8e5fca1153f4357608fe81708b6b2532c75ad2056768ebdd5aba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80e1b31e825c8e5fca1153f4357608fe81708b6b2532c75ad2056768ebdd5aba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80e1b31e825c8e5fca1153f4357608fe81708b6b2532c75ad2056768ebdd5aba", kill_on_drop: false }`
[INFO] [stdout] 80e1b31e825c8e5fca1153f4357608fe81708b6b2532c75ad2056768ebdd5aba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab1856b3a067554330d5cd51926b3f3c8a93b8d6db28f5e42e2506a998613dbc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ab1856b3a067554330d5cd51926b3f3c8a93b8d6db28f5e42e2506a998613dbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.6
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.2
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling neche v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]   --> src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | use std::cmp::Ordering;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/evolution.rs:315:6
[INFO] [stdout]     |
[INFO] [stdout] 315 |     let mut networks: Vec<String> = buffer
[INFO] [stdout]     |         ----^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `do_round_robin`
[INFO] [stdout]    --> src/evolution.rs:304:8
[INFO] [stdout]     |
[INFO] [stdout] 304 | pub fn do_round_robin(input_path: &str, output_path: &str, depth: u32) -> () {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/evolution.rs:354:3
[INFO] [stdout]     |
[INFO] [stdout] 354 | /         out_file.write_all(format!("{} {} {}\n",
[INFO] [stdout] 355 | |         idx_pairs[i].0, idx_pairs[i].1, results[i]).as_bytes());
[INFO] [stdout]     | |________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.59s
[INFO] running `Command { std: "docker" "inspect" "ab1856b3a067554330d5cd51926b3f3c8a93b8d6db28f5e42e2506a998613dbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab1856b3a067554330d5cd51926b3f3c8a93b8d6db28f5e42e2506a998613dbc", kill_on_drop: false }`
[INFO] [stdout] ab1856b3a067554330d5cd51926b3f3c8a93b8d6db28f5e42e2506a998613dbc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee516a50b0b170812f1a1117def621e2fb75b62b97eb90226a260437c1264c25
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ee516a50b0b170812f1a1117def621e2fb75b62b97eb90226a260437c1264c25", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling neche v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0425]: cannot find function `generate_idx_pairs` in this scope
[INFO] [stdout]    --> src/evolution.rs:366:14
[INFO] [stdout]     |
[INFO] [stdout] 366 |         assert_eq!(generate_idx_pairs(3),
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `generate_idx_pairs` in this scope
[INFO] [stdout]    --> src/evolution.rs:368:14
[INFO] [stdout]     |
[INFO] [stdout] 368 |         assert_eq!(generate_idx_pairs(1), vec![]);
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `generate_idx_pairs` in this scope
[INFO] [stdout]    --> src/evolution.rs:369:14
[INFO] [stdout]     |
[INFO] [stdout] 369 |         assert_eq!(generate_idx_pairs(0), vec![]);
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `generate_idx_pairs` in this scope
[INFO] [stdout]    --> src/evolution.rs:370:14
[INFO] [stdout]     |
[INFO] [stdout] 370 |         assert_eq!(generate_idx_pairs(100).len(), 9900);
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]   --> src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | use std::cmp::Ordering;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super`
[INFO] [stdout]    --> src/evolution.rs:362:6
[INFO] [stdout]     |
[INFO] [stdout] 362 |     use super::*;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `neche` due to 5 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "ee516a50b0b170812f1a1117def621e2fb75b62b97eb90226a260437c1264c25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee516a50b0b170812f1a1117def621e2fb75b62b97eb90226a260437c1264c25", kill_on_drop: false }`
[INFO] [stdout] ee516a50b0b170812f1a1117def621e2fb75b62b97eb90226a260437c1264c25