[INFO] updating cached repository https://github.com/ikamensh/sorts
[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] 4eb0e03b31fae8cf7c1e3c2a204fd49fd882aa91
[INFO] testing ikamensh/sorts against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fikamensh%2Fsorts" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ikamensh/sorts on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ikamensh/sorts
[INFO] finished tweaking git repo https://github.com/ikamensh/sorts
[INFO] tweaked toml for git repo https://github.com/ikamensh/sorts written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/ikamensh/sorts already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a91700677f0e374f4f59560e982487c2f7e9b9a381df91e7218466b1aa4146a8
[INFO] running `"docker" "start" "-a" "a91700677f0e374f4f59560e982487c2f7e9b9a381df91e7218466b1aa4146a8"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling sorts v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `rand::prelude::*`
[INFO] [stderr]  --> src/sorting_algorithms/quicksort.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use rand::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parent`
[INFO] [stderr]   --> src/sorting_algorithms/heap.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn parent(idx: usize) -> Option<usize> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `has_heap_property`
[INFO] [stderr]   --> src/sorting_algorithms/heap.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     pub fn has_heap_property(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `bubble_sort`
[INFO] [stderr]  --> src/bin/visual.rs:1:38
[INFO] [stderr]   |
[INFO] [stderr] 1 | use sorts::{is_sorted, random_array, bubble_sort, heapsort};
[INFO] [stderr]   |                                      ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/bin/visual.rs:11:22
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let a = heapsort(a); // use this line for sorts that are not inplace
[INFO] [stderr]    |                      ^
[INFO] [stderr]    |                      |
[INFO] [stderr]    |                      expected `&[_]`, found struct `std::vec::Vec`
[INFO] [stderr]    |                      help: consider borrowing here: `&a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected reference `&[_]`
[INFO] [stderr]                  found struct `std::vec::Vec<i8>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `sorts`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a91700677f0e374f4f59560e982487c2f7e9b9a381df91e7218466b1aa4146a8"`
[INFO] running `"docker" "rm" "-f" "a91700677f0e374f4f59560e982487c2f7e9b9a381df91e7218466b1aa4146a8"`
[INFO] [stdout] a91700677f0e374f4f59560e982487c2f7e9b9a381df91e7218466b1aa4146a8