[INFO] cloning repository https://github.com/jwmorrow1s/ch8_3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jwmorrow1s/ch8_3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjwmorrow1s%2Fch8_3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjwmorrow1s%2Fch8_3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d6dfcc5c9216dcd604d25c536e2addf416c585c9
[INFO] checking jwmorrow1s/ch8_3 against master#e4106065bf1bb515935d5d024e8d9c86454e2b22 for pr-112160
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjwmorrow1s%2Fch8_3" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jwmorrow1s/ch8_3 on toolchain e4106065bf1bb515935d5d024e8d9c86454e2b22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e4106065bf1bb515935d5d024e8d9c86454e2b22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jwmorrow1s/ch8_3
[INFO] finished tweaking git repo https://github.com/jwmorrow1s/ch8_3
[INFO] tweaked toml for git repo https://github.com/jwmorrow1s/ch8_3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jwmorrow1s/ch8_3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e4106065bf1bb515935d5d024e8d9c86454e2b22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e4106065bf1bb515935d5d024e8d9c86454e2b22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b0408408bfc6eaf56c7713f488708677c2cfeb8ea66b824795c1cc077bb5df87
[INFO] running `Command { std: "docker" "start" "-a" "b0408408bfc6eaf56c7713f488708677c2cfeb8ea66b824795c1cc077bb5df87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b0408408bfc6eaf56c7713f488708677c2cfeb8ea66b824795c1cc077bb5df87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0408408bfc6eaf56c7713f488708677c2cfeb8ea66b824795c1cc077bb5df87", kill_on_drop: false }`
[INFO] [stdout] b0408408bfc6eaf56c7713f488708677c2cfeb8ea66b824795c1cc077bb5df87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e4106065bf1bb515935d5d024e8d9c86454e2b22" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bdbd0941f8bd0cc5e72503c5672dd5e25db815985c9154b772e881106f2553d0
[INFO] running `Command { std: "docker" "start" "-a" "bdbd0941f8bd0cc5e72503c5672dd5e25db815985c9154b772e881106f2553d0", kill_on_drop: false }`
[INFO] [stderr]     Checking ch8_3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]   --> src/central_tendency.rs:33:11
[INFO] [stdout]    |
[INFO] [stdout] 33 |         v[(v.len() / 2)] as f64
[INFO] [stdout]    |           ^           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 33 -         v[(v.len() / 2)] as f64
[INFO] [stdout] 33 +         v[v.len() / 2] as f64
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]   --> src/central_tendency.rs:33:11
[INFO] [stdout]    |
[INFO] [stdout] 33 |         v[(v.len() / 2)] as f64
[INFO] [stdout]    |           ^           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 33 -         v[(v.len() / 2)] as f64
[INFO] [stdout] 33 +         v[v.len() / 2] as f64
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "bdbd0941f8bd0cc5e72503c5672dd5e25db815985c9154b772e881106f2553d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdbd0941f8bd0cc5e72503c5672dd5e25db815985c9154b772e881106f2553d0", kill_on_drop: false }`
[INFO] [stdout] bdbd0941f8bd0cc5e72503c5672dd5e25db815985c9154b772e881106f2553d0