[INFO] updating cached repository kdy1/stackoverflow-56728860
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kdy1/stackoverflow-56728860
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kdy1/stackoverflow-56728860" "work/ex/beta-1.38-1/sources/1.37.0/gh/kdy1/stackoverflow-56728860"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/kdy1/stackoverflow-56728860'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kdy1/stackoverflow-56728860" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kdy1/stackoverflow-56728860"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kdy1/stackoverflow-56728860'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d62317ad0185ef789216ea871c78016ff9649be1
[INFO] sha for GitHub repo kdy1/stackoverflow-56728860: d62317ad0185ef789216ea871c78016ff9649be1
[INFO] validating manifest of kdy1/stackoverflow-56728860 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 kdy1/stackoverflow-56728860 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 kdy1/stackoverflow-56728860
[INFO] finished frobbing kdy1/stackoverflow-56728860
[INFO] frobbed toml for kdy1/stackoverflow-56728860 written to work/ex/beta-1.38-1/sources/1.37.0/gh/kdy1/stackoverflow-56728860/Cargo.toml
[INFO] started frobbing kdy1/stackoverflow-56728860
[INFO] finished frobbing kdy1/stackoverflow-56728860
[INFO] frobbed toml for kdy1/stackoverflow-56728860 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kdy1/stackoverflow-56728860/Cargo.toml
[INFO] crate kdy1/stackoverflow-56728860 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 kdy1/stackoverflow-56728860 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kdy1/stackoverflow-56728860:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 44413c9246c2a560cc25f872e8a5f0e30805534f83e2e640d9b2dc6915b2ddde
[INFO] running `"docker" "start" "-a" "44413c9246c2a560cc25f872e8a5f0e30805534f83e2e640d9b2dc6915b2ddde"`
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling parking_lot v0.4.8
[INFO] [stderr]    Compiling chashmap v2.2.2
[INFO] [stderr]    Compiling stackoverflow-56728860 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0515]: cannot return value referencing local variable `lib`
[INFO] [stderr]   --> src/main.rs:32:16
[INFO] [stderr]    |
[INFO] [stderr] 31 |     if let Some(ty) = lib.types.get(name) {
[INFO] [stderr]    |                       --- `lib` is borrowed here
[INFO] [stderr] 32 |         return Some(&*ty);
[INFO] [stderr]    |                ^^^^^^^^^^ returns a value referencing data owned by the current function
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0515`.
[INFO] [stderr] error: Could not compile `stackoverflow-56728860`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "44413c9246c2a560cc25f872e8a5f0e30805534f83e2e640d9b2dc6915b2ddde"`
[INFO] running `"docker" "rm" "-f" "44413c9246c2a560cc25f872e8a5f0e30805534f83e2e640d9b2dc6915b2ddde"`
[INFO] [stdout] 44413c9246c2a560cc25f872e8a5f0e30805534f83e2e640d9b2dc6915b2ddde