[INFO] cloning repository https://github.com/yuki0418/rust-leet-code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yuki0418/rust-leet-code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuki0418%2Frust-leet-code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuki0418%2Frust-leet-code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b16287d34560813f0585d7357ba17613de0a3264
[INFO] checking yuki0418/rust-leet-code against master#90384941aae4ea38de00e4702b50757e9b882a19 for pr-138340
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuki0418%2Frust-leet-code" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yuki0418/rust-leet-code on toolchain 90384941aae4ea38de00e4702b50757e9b882a19
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+90384941aae4ea38de00e4702b50757e9b882a19" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yuki0418/rust-leet-code
[INFO] finished tweaking git repo https://github.com/yuki0418/rust-leet-code
[INFO] tweaked toml for git repo https://github.com/yuki0418/rust-leet-code written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/yuki0418/rust-leet-code 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" "+90384941aae4ea38de00e4702b50757e9b882a19" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+90384941aae4ea38de00e4702b50757e9b882a19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd556b981c2ffe8b336d22c5610e38ceb24448559a26c973d34930957599d4aa
[INFO] running `Command { std: "docker" "start" "-a" "cd556b981c2ffe8b336d22c5610e38ceb24448559a26c973d34930957599d4aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd556b981c2ffe8b336d22c5610e38ceb24448559a26c973d34930957599d4aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd556b981c2ffe8b336d22c5610e38ceb24448559a26c973d34930957599d4aa", kill_on_drop: false }`
[INFO] [stdout] cd556b981c2ffe8b336d22c5610e38ceb24448559a26c973d34930957599d4aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+90384941aae4ea38de00e4702b50757e9b882a19" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37bcf6c63e5de44b65176be1297ff379bbcd3b07a1eddcd09afb823d8a9e5ba6
[INFO] running `Command { std: "docker" "start" "-a" "37bcf6c63e5de44b65176be1297ff379bbcd3b07a1eddcd09afb823d8a9e5ba6", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-leet-code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> examples/leetcode75_array_string_reverse_vowels_of_a_string/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut bytes = unsafe { s.as_bytes_mut() };
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "37bcf6c63e5de44b65176be1297ff379bbcd3b07a1eddcd09afb823d8a9e5ba6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37bcf6c63e5de44b65176be1297ff379bbcd3b07a1eddcd09afb823d8a9e5ba6", kill_on_drop: false }`
[INFO] [stdout] 37bcf6c63e5de44b65176be1297ff379bbcd3b07a1eddcd09afb823d8a9e5ba6