[INFO] cloning repository https://github.com/ShihHsuanChen/rust-minigrep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ShihHsuanChen/rust-minigrep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShihHsuanChen%2Frust-minigrep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShihHsuanChen%2Frust-minigrep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0cbc4585cfb7fc00f5be3b12076094960eb8df32
[INFO] checking ShihHsuanChen/rust-minigrep against master#a932eb36f8adf6c8cdfc450f063943da3112d621 for pr-140209-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShihHsuanChen%2Frust-minigrep" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ShihHsuanChen/rust-minigrep on toolchain a932eb36f8adf6c8cdfc450f063943da3112d621
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a932eb36f8adf6c8cdfc450f063943da3112d621" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ShihHsuanChen/rust-minigrep
[INFO] finished tweaking git repo https://github.com/ShihHsuanChen/rust-minigrep
[INFO] tweaked toml for git repo https://github.com/ShihHsuanChen/rust-minigrep written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ShihHsuanChen/rust-minigrep 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" "+a932eb36f8adf6c8cdfc450f063943da3112d621" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+a932eb36f8adf6c8cdfc450f063943da3112d621" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27062910a6fe4366ad30ca7c684b811edd767608d4ffd68896b7de5f9226a853
[INFO] running `Command { std: "docker" "start" "-a" "27062910a6fe4366ad30ca7c684b811edd767608d4ffd68896b7de5f9226a853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27062910a6fe4366ad30ca7c684b811edd767608d4ffd68896b7de5f9226a853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27062910a6fe4366ad30ca7c684b811edd767608d4ffd68896b7de5f9226a853", kill_on_drop: false }`
[INFO] [stdout] 27062910a6fe4366ad30ca7c684b811edd767608d4ffd68896b7de5f9226a853
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+a932eb36f8adf6c8cdfc450f063943da3112d621" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91ef5956f893890dce03294a109651b6441ac979cf7c10f8ba9436bb547e45bc
[INFO] running `Command { std: "docker" "start" "-a" "91ef5956f893890dce03294a109651b6441ac979cf7c10f8ba9436bb547e45bc", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking minigrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `caps`
[INFO] [stdout]   --> src/main.rs:35:21
[INFO] [stdout]    |
[INFO] [stdout] 35 |         if let Some(caps) = re.captures(&line) {
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_caps`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `caps`
[INFO] [stdout]   --> src/main.rs:35:21
[INFO] [stdout]    |
[INFO] [stdout] 35 |         if let Some(caps) = re.captures(&line) {
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_caps`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.86s
[INFO] running `Command { std: "docker" "inspect" "91ef5956f893890dce03294a109651b6441ac979cf7c10f8ba9436bb547e45bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91ef5956f893890dce03294a109651b6441ac979cf7c10f8ba9436bb547e45bc", kill_on_drop: false }`
[INFO] [stdout] 91ef5956f893890dce03294a109651b6441ac979cf7c10f8ba9436bb547e45bc