[INFO] updating cached repository RustaceanYou/rust-practice
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/RustaceanYou/rust-practice
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/RustaceanYou/rust-practice" "work/ex/beta-1.38-1/sources/1.37.0/gh/RustaceanYou/rust-practice"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/RustaceanYou/rust-practice'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/RustaceanYou/rust-practice" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/RustaceanYou/rust-practice"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/RustaceanYou/rust-practice'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8df927fd7675248a2caab5af040e6f713903c6d6
[INFO] sha for GitHub repo RustaceanYou/rust-practice: 8df927fd7675248a2caab5af040e6f713903c6d6
[INFO] validating manifest of RustaceanYou/rust-practice on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of RustaceanYou/rust-practice on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing RustaceanYou/rust-practice
[INFO] finished frobbing RustaceanYou/rust-practice
[INFO] frobbed toml for RustaceanYou/rust-practice written to work/ex/beta-1.38-1/sources/1.37.0/gh/RustaceanYou/rust-practice/Cargo.toml
[INFO] started frobbing RustaceanYou/rust-practice
[INFO] finished frobbing RustaceanYou/rust-practice
[INFO] frobbed toml for RustaceanYou/rust-practice written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/RustaceanYou/rust-practice/Cargo.toml
[INFO] crate RustaceanYou/rust-practice already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing RustaceanYou/rust-practice against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/RustaceanYou/rust-practice:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 0b1b253da4b7c2a3adddb97da0afd41cce9545125eeab12278555aa7897b1be2
[INFO] running `"docker" "start" "-a" "0b1b253da4b7c2a3adddb97da0afd41cce9545125eeab12278555aa7897b1be2"`
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: expected item after doc comment
[INFO] [stderr]   --> src/main.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | / /**
[INFO] [stderr] 28 | |  * let 解构
[INFO] [stderr] 29 | |  */
[INFO] [stderr]    | |___^ this doc comment doesn't document anything
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[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" "0b1b253da4b7c2a3adddb97da0afd41cce9545125eeab12278555aa7897b1be2"`
[INFO] running `"docker" "rm" "-f" "0b1b253da4b7c2a3adddb97da0afd41cce9545125eeab12278555aa7897b1be2"`
[INFO] [stdout] 0b1b253da4b7c2a3adddb97da0afd41cce9545125eeab12278555aa7897b1be2