[INFO] cloning repository Vlad-Konovalchuk/study-rust
[INFO] running `"git" "clone" "--bare" "git://github.com/Vlad-Konovalchuk/study-rust.git" "work/cache/sources/gh/Vlad-Konovalchuk/study-rust"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/Vlad-Konovalchuk/study-rust'...
[INFO] running `"git" "clone" "work/cache/sources/gh/Vlad-Konovalchuk/study-rust" "work/ex/beta-1.37-6/sources/1.36.0/gh/Vlad-Konovalchuk/study-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Vlad-Konovalchuk/study-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Vlad-Konovalchuk/study-rust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Vlad-Konovalchuk/study-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Vlad-Konovalchuk/study-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c78167570a3831dddef052b952c43b461353e026
[INFO] sha for GitHub repo Vlad-Konovalchuk/study-rust: c78167570a3831dddef052b952c43b461353e026
[INFO] validating manifest of Vlad-Konovalchuk/study-rust on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Vlad-Konovalchuk/study-rust on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Vlad-Konovalchuk/study-rust
[INFO] finished frobbing Vlad-Konovalchuk/study-rust
[INFO] frobbed toml for Vlad-Konovalchuk/study-rust written to work/ex/beta-1.37-6/sources/1.36.0/gh/Vlad-Konovalchuk/study-rust/Cargo.toml
[INFO] started frobbing Vlad-Konovalchuk/study-rust
[INFO] finished frobbing Vlad-Konovalchuk/study-rust
[INFO] frobbed toml for Vlad-Konovalchuk/study-rust written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Vlad-Konovalchuk/study-rust/Cargo.toml
[INFO] crate Vlad-Konovalchuk/study-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Vlad-Konovalchuk/study-rust against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Vlad-Konovalchuk/study-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 99ab38c608e3d0ee931540153cc0d87d85ab6bfa8d6f726b2431b0d430aa48b2
[INFO] running `"docker" "start" "-a" "99ab38c608e3d0ee931540153cc0d87d85ab6bfa8d6f726b2431b0d430aa48b2"`
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn main() {
[INFO] [stderr]   |           - expected `()` because of default return type
[INFO] [stderr] ...
[INFO] [stderr] 9 |     io::stdin().read_line(&mut guess)
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^- help: try adding a semicolon: `;`
[INFO] [stderr]   |     |
[INFO] [stderr]   |     expected (), found enum `std::result::Result`
[INFO] [stderr]   |
[INFO] [stderr]   = note: expected type `()`
[INFO] [stderr]              found type `std::result::Result<usize, std::io::Error>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `guessing_game`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "99ab38c608e3d0ee931540153cc0d87d85ab6bfa8d6f726b2431b0d430aa48b2"`
[INFO] running `"docker" "rm" "-f" "99ab38c608e3d0ee931540153cc0d87d85ab6bfa8d6f726b2431b0d430aa48b2"`
[INFO] [stdout] 99ab38c608e3d0ee931540153cc0d87d85ab6bfa8d6f726b2431b0d430aa48b2