[INFO] updating cached repository rsstdd/Rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rsstdd/Rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rsstdd/Rust" "work/ex/beta-1.37-6/sources/1.36.0/gh/rsstdd/Rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/rsstdd/Rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rsstdd/Rust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rsstdd/Rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rsstdd/Rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c5cf6db23528ef4649a33cf250d2cdf9c238c1c0
[INFO] sha for GitHub repo rsstdd/Rust: c5cf6db23528ef4649a33cf250d2cdf9c238c1c0
[INFO] validating manifest of rsstdd/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 rsstdd/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 rsstdd/Rust
[INFO] finished frobbing rsstdd/Rust
[INFO] frobbed toml for rsstdd/Rust written to work/ex/beta-1.37-6/sources/1.36.0/gh/rsstdd/Rust/Cargo.toml
[INFO] started frobbing rsstdd/Rust
[INFO] finished frobbing rsstdd/Rust
[INFO] frobbed toml for rsstdd/Rust written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rsstdd/Rust/Cargo.toml
[INFO] crate rsstdd/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 rsstdd/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-7/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/rsstdd/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] 600554fba6c845bf42f33debc23bd1b4d252e04d4bdb24e01bc606a3403a8833
[INFO] running `"docker" "start" "-a" "600554fba6c845bf42f33debc23bd1b4d252e04d4bdb24e01bc606a3403a8833"`
[INFO] [stderr]    Compiling hello_cargo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: expected one of `.`, `;`, `?`, or an operator, found `{`
[INFO] [stderr]   --> src/main.rs:20:47
[INFO] [stderr]    |
[INFO] [stderr] 20 |         let guess: u32 = guess.trim().parse() {
[INFO] [stderr]    |                                               ^ expected one of `.`, `;`, `?`, or an operator here
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::Ordering`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::cmp::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `hello_cargo`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "600554fba6c845bf42f33debc23bd1b4d252e04d4bdb24e01bc606a3403a8833"`
[INFO] running `"docker" "rm" "-f" "600554fba6c845bf42f33debc23bd1b4d252e04d4bdb24e01bc606a3403a8833"`
[INFO] [stdout] 600554fba6c845bf42f33debc23bd1b4d252e04d4bdb24e01bc606a3403a8833