[INFO] cloning repository https://github.com/davidnyberg/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/davidnyberg/rust_minigrep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidnyberg%2Frust_minigrep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidnyberg%2Frust_minigrep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 11f9a156209950b20503b710f20af9b89a544750
[INFO] checking davidnyberg/rust_minigrep against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidnyberg%2Frust_minigrep" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davidnyberg/rust_minigrep on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/davidnyberg/rust_minigrep
[INFO] finished tweaking git repo https://github.com/davidnyberg/rust_minigrep
[INFO] tweaked toml for git repo https://github.com/davidnyberg/rust_minigrep written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/davidnyberg/rust_minigrep already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a372fc5535622e1f9f6e519fc3888554f9038fe070ff82b0fa4457ee1d36a56b
[INFO] running `Command { std: "docker" "start" "-a" "a372fc5535622e1f9f6e519fc3888554f9038fe070ff82b0fa4457ee1d36a56b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a372fc5535622e1f9f6e519fc3888554f9038fe070ff82b0fa4457ee1d36a56b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a372fc5535622e1f9f6e519fc3888554f9038fe070ff82b0fa4457ee1d36a56b", kill_on_drop: false }`
[INFO] [stdout] a372fc5535622e1f9f6e519fc3888554f9038fe070ff82b0fa4457ee1d36a56b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2336711858ea0a6cd67cf5a125804f4a28c0ef4e4b219481a1cda0332ad346a
[INFO] running `Command { std: "docker" "start" "-a" "c2336711858ea0a6cd67cf5a125804f4a28c0ef4e4b219481a1cda0332ad346a", kill_on_drop: false }`
[INFO] [stderr]     Checking minigrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]  --> src/main.rs:8:53
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let config = Config::new(&args).unwrap_or_else(|err| {
[INFO] [stdout]   |                                                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/main.rs:16:16
[INFO] [stdout]    |
[INFO] [stdout] 16 |     if let Err(e) = minigrep::run(config) {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]  --> src/main.rs:8:53
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let config = Config::new(&args).unwrap_or_else(|err| {
[INFO] [stdout]   |                                                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/main.rs:16:16
[INFO] [stdout]    |
[INFO] [stdout] 16 |     if let Err(e) = minigrep::run(config) {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.27s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c2336711858ea0a6cd67cf5a125804f4a28c0ef4e4b219481a1cda0332ad346a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2336711858ea0a6cd67cf5a125804f4a28c0ef4e4b219481a1cda0332ad346a", kill_on_drop: false }`
[INFO] [stdout] c2336711858ea0a6cd67cf5a125804f4a28c0ef4e4b219481a1cda0332ad346a