[INFO] cloning repository https://github.com/nrebei2/codecrafters-grep-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nrebei2/codecrafters-grep-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrebei2%2Fcodecrafters-grep-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrebei2%2Fcodecrafters-grep-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d69673fcdb905fe442ac28d09893d585e0fb4c9
[INFO] checking nrebei2/codecrafters-grep-rust against master#cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3 for pr-135841
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrebei2%2Fcodecrafters-grep-rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nrebei2/codecrafters-grep-rust on toolchain cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nrebei2/codecrafters-grep-rust
[INFO] finished tweaking git repo https://github.com/nrebei2/codecrafters-grep-rust
[INFO] tweaked toml for git repo https://github.com/nrebei2/codecrafters-grep-rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/nrebei2/codecrafters-grep-rust 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" "+cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b26f85ce9ca975ba891c69271fbf38a0b0f25bc0479119d5f6e6b86dbe0db482
[INFO] running `Command { std: "docker" "start" "-a" "b26f85ce9ca975ba891c69271fbf38a0b0f25bc0479119d5f6e6b86dbe0db482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b26f85ce9ca975ba891c69271fbf38a0b0f25bc0479119d5f6e6b86dbe0db482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b26f85ce9ca975ba891c69271fbf38a0b0f25bc0479119d5f6e6b86dbe0db482", kill_on_drop: false }`
[INFO] [stdout] b26f85ce9ca975ba891c69271fbf38a0b0f25bc0479119d5f6e6b86dbe0db482
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+cd805f09ffbfa3896c8f50a619de9b67e1d9f3c3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a4e55c4cdf25d371abf5b53902fea15e1b712e3e3bcba47b822aa990ee6e8fc
[INFO] running `Command { std: "docker" "start" "-a" "3a4e55c4cdf25d371abf5b53902fea15e1b712e3e3bcba47b822aa990ee6e8fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling anyhow v1.0.86
[INFO] [stderr]    Compiling thiserror v1.0.63
[INFO] [stderr]     Checking bytes v1.7.1
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.75
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]     Checking codecrafters-grep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/matcher.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |         mut context: MatchingContext<'a>,
[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] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/matcher.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 82 | impl<'a> MatchingContext<'a> {
[INFO] [stdout]    | ---------------------------- associated function in this implementation
[INFO] [stdout] 83 |     pub fn new(haystack: &'a str) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `matches_from_start` is never used
[INFO] [stdout]    --> src/nfa.rs:157:12
[INFO] [stdout]     |
[INFO] [stdout] 29  | impl NFA {
[INFO] [stdout]     | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 157 |     pub fn matches_from_start<'a>(&self, haystack: &'a str) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/matcher.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |         mut context: MatchingContext<'a>,
[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 6.69s
[INFO] running `Command { std: "docker" "inspect" "3a4e55c4cdf25d371abf5b53902fea15e1b712e3e3bcba47b822aa990ee6e8fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a4e55c4cdf25d371abf5b53902fea15e1b712e3e3bcba47b822aa990ee6e8fc", kill_on_drop: false }`
[INFO] [stdout] 3a4e55c4cdf25d371abf5b53902fea15e1b712e3e3bcba47b822aa990ee6e8fc