[INFO] cloning repository https://github.com/stevenleadbeater/binary-search-exercises
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevenleadbeater%2Fbinary-search-exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6438adb785bb5e6f99f3e1b4840c541bdcc600ce
[INFO] checking stevenleadbeater/binary-search-exercises against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevenleadbeater%2Fbinary-search-exercises" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/stevenleadbeater/binary-search-exercises on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-6/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 `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 329fb12e770edad1018ac5f28655856ec7f7a0b2485ae8859f52b63be7311b33
[INFO] running `Command { std: "docker" "start" "-a" "329fb12e770edad1018ac5f28655856ec7f7a0b2485ae8859f52b63be7311b33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "329fb12e770edad1018ac5f28655856ec7f7a0b2485ae8859f52b63be7311b33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "329fb12e770edad1018ac5f28655856ec7f7a0b2485ae8859f52b63be7311b33", kill_on_drop: false }`
[INFO] [stdout] 329fb12e770edad1018ac5f28655856ec7f7a0b2485ae8859f52b63be7311b33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c8108e6052578a58804c432fa3b97159e62f8fc4db4ef0f4833d8050bd9056b
[INFO] running `Command { std: "docker" "start" "-a" "1c8108e6052578a58804c432fa3b97159e62f8fc4db4ef0f4833d8050bd9056b", kill_on_drop: false }`
[INFO] [stderr]     Checking binary-search v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `mid` is never read
[INFO] [stdout]   --> src/binary_search.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let mut mid = high / 2;
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `BinarySearch`
[INFO] [stdout]  --> src/binary_search.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct BinarySearch {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/binary_search.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn new(array: Vec<i64>) -> BinarySearch {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]   --> src/binary_search.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn search(&self, target: i64) -> i64 {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `mid` is never read
[INFO] [stdout]   --> src/binary_search.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let mut mid = high / 2;
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "1c8108e6052578a58804c432fa3b97159e62f8fc4db4ef0f4833d8050bd9056b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c8108e6052578a58804c432fa3b97159e62f8fc4db4ef0f4833d8050bd9056b", kill_on_drop: false }`
[INFO] [stdout] 1c8108e6052578a58804c432fa3b97159e62f8fc4db4ef0f4833d8050bd9056b