[INFO] cloning repository https://github.com/mbbxAdam/minigrep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mbbxAdam/minigrep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmbbxAdam%2Fminigrep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmbbxAdam%2Fminigrep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c16d0309e9cc9e1b302d5f3c6e8f4bd00321fcf1
[INFO] testing mbbxAdam/minigrep against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmbbxAdam%2Fminigrep" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mbbxAdam/minigrep on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mbbxAdam/minigrep
[INFO] finished tweaking git repo https://github.com/mbbxAdam/minigrep
[INFO] tweaked toml for git repo https://github.com/mbbxAdam/minigrep written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/mbbxAdam/minigrep already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 260064552e4eff412358b135a35f976ec9b27139921881e0365622cdd13df096
[INFO] running `Command { std: "docker" "start" "-a" "260064552e4eff412358b135a35f976ec9b27139921881e0365622cdd13df096", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "260064552e4eff412358b135a35f976ec9b27139921881e0365622cdd13df096", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "260064552e4eff412358b135a35f976ec9b27139921881e0365622cdd13df096", kill_on_drop: false }`
[INFO] [stdout] 260064552e4eff412358b135a35f976ec9b27139921881e0365622cdd13df096
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 874fe81d8d6e89060f4eec2c420c0705df9ecf0f7a97c9a29df22b7c738341f9
[INFO] running `Command { std: "docker" "start" "-a" "874fe81d8d6e89060f4eec2c420c0705df9ecf0f7a97c9a29df22b7c738341f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling minigrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:20:27
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn run(config: Config) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |    ---                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `Result`, found `()`
[INFO] [stdout]    |    |
[INFO] [stdout]    |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected enum `Result<(), Box<(dyn std::error::Error + 'static)>>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `minigrep` due to 2 previous errors
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "874fe81d8d6e89060f4eec2c420c0705df9ecf0f7a97c9a29df22b7c738341f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "874fe81d8d6e89060f4eec2c420c0705df9ecf0f7a97c9a29df22b7c738341f9", kill_on_drop: false }`
[INFO] [stdout] 874fe81d8d6e89060f4eec2c420c0705df9ecf0f7a97c9a29df22b7c738341f9