[INFO] cloning repository https://github.com/stevenleadbeater/binary-search-exercises
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stevenleadbeater/binary-search-exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevenleadbeater%2Fbinary-search-exercises"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevenleadbeater%2Fbinary-search-exercises'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6438adb785bb5e6f99f3e1b4840c541bdcc600ce
[INFO] checking stevenleadbeater/binary-search-exercises against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevenleadbeater%2Fbinary-search-exercises" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/stevenleadbeater/binary-search-exercises on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/stevenleadbeater/binary-search-exercises
[INFO] finished tweaking git repo https://github.com/stevenleadbeater/binary-search-exercises
[INFO] tweaked toml for git repo https://github.com/stevenleadbeater/binary-search-exercises written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/stevenleadbeater/binary-search-exercises already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+45d050cde277b22a755847338f2acc2c7b834141" "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] 68d520580e76fa764950857eafad0bd0c5f95ef1486a7db59e90dd55b9045f76
[INFO] running `"docker" "start" "-a" "68d520580e76fa764950857eafad0bd0c5f95ef1486a7db59e90dd55b9045f76"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking binary-search v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: value assigned to `mid` is never read
[INFO] [stderr]   --> src/binary_search.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         let mut mid = high / 2;
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `BinarySearch`
[INFO] [stderr]  --> src/binary_search.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct BinarySearch {
[INFO] [stderr]   |        ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/binary_search.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn new(array: Vec<i64>) -> BinarySearch {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `search`
[INFO] [stderr]   --> src/binary_search.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn search(&self, target: i64) -> i64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `mid` is never read
[INFO] [stderr]   --> src/binary_search.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         let mut mid = high / 2;
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "68d520580e76fa764950857eafad0bd0c5f95ef1486a7db59e90dd55b9045f76"`
[INFO] running `"docker" "rm" "-f" "68d520580e76fa764950857eafad0bd0c5f95ef1486a7db59e90dd55b9045f76"`
[INFO] [stdout] 68d520580e76fa764950857eafad0bd0c5f95ef1486a7db59e90dd55b9045f76