[INFO] cloning repository https://github.com/konkum/rust-coding-website
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/konkum/rust-coding-website" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonkum%2Frust-coding-website", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonkum%2Frust-coding-website'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b0d86643feda8328522b1a5ce02bbab58033e88a
[INFO] checking konkum/rust-coding-website against master#17ffbc81a30c094193836a5d7f90dff273b5df93 for pr-138785
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonkum%2Frust-coding-website" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/konkum/rust-coding-website on toolchain 17ffbc81a30c094193836a5d7f90dff273b5df93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/konkum/rust-coding-website
[INFO] finished tweaking git repo https://github.com/konkum/rust-coding-website
[INFO] tweaked toml for git repo https://github.com/konkum/rust-coding-website written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/konkum/rust-coding-website 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" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 25238c0ad7718eef4c767151415715ace7ab637c35c7283d3d01c8787bcc460b
[INFO] running `Command { std: "docker" "start" "-a" "25238c0ad7718eef4c767151415715ace7ab637c35c7283d3d01c8787bcc460b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25238c0ad7718eef4c767151415715ace7ab637c35c7283d3d01c8787bcc460b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25238c0ad7718eef4c767151415715ace7ab637c35c7283d3d01c8787bcc460b", kill_on_drop: false }`
[INFO] [stdout] 25238c0ad7718eef4c767151415715ace7ab637c35c7283d3d01c8787bcc460b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb88561d06a83c653c8e35b9fd0e45b9e1667f69243e2083a7514f48978a8817
[INFO] running `Command { std: "docker" "start" "-a" "cb88561d06a83c653c8e35b9fd0e45b9e1667f69243e2083a7514f48978a8817", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-coding-website v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/leetcode.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |     for i in 3..range {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/leetcode.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |     for i in 3..range {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid` is never used
[INFO] [stdout]   --> src/leetcode.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn is_valid(s: String) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid` is never used
[INFO] [stdout]   --> src/leetcode.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn is_valid(s: String) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "cb88561d06a83c653c8e35b9fd0e45b9e1667f69243e2083a7514f48978a8817", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb88561d06a83c653c8e35b9fd0e45b9e1667f69243e2083a7514f48978a8817", kill_on_drop: false }`
[INFO] [stdout] cb88561d06a83c653c8e35b9fd0e45b9e1667f69243e2083a7514f48978a8817