[INFO] updating cached repository Jeffersyno/aisolver
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Jeffersyno/aisolver
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Jeffersyno/aisolver" "work/ex/beta-1.38-1/sources/1.37.0/gh/Jeffersyno/aisolver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Jeffersyno/aisolver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Jeffersyno/aisolver" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jeffersyno/aisolver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jeffersyno/aisolver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a4dac4ff34e4ba35025c92c19b7e17bcdd31bc09
[INFO] sha for GitHub repo Jeffersyno/aisolver: a4dac4ff34e4ba35025c92c19b7e17bcdd31bc09
[INFO] validating manifest of Jeffersyno/aisolver 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 Jeffersyno/aisolver 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 Jeffersyno/aisolver
[INFO] finished frobbing Jeffersyno/aisolver
[INFO] frobbed toml for Jeffersyno/aisolver written to work/ex/beta-1.38-1/sources/1.37.0/gh/Jeffersyno/aisolver/Cargo.toml
[INFO] started frobbing Jeffersyno/aisolver
[INFO] finished frobbing Jeffersyno/aisolver
[INFO] frobbed toml for Jeffersyno/aisolver written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jeffersyno/aisolver/Cargo.toml
[INFO] crate Jeffersyno/aisolver 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 Jeffersyno/aisolver 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/Jeffersyno/aisolver:/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] e2d9152a9c53a03fea9c79daf45040ce6802de9d36b1752028446cf978003d39
[INFO] running `"docker" "start" "-a" "e2d9152a9c53a03fea9c79daf45040ce6802de9d36b1752028446cf978003d39"`
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rustyline v3.0.0
[INFO] [stderr] error[E0283]: type annotations required: cannot resolve `std::string::String: std::convert::AsRef<_>`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustyline-3.0.0/src/lib.rs:655:43
[INFO] [stderr]     |
[INFO] [stderr] 655 |             editor.add_history_entry(line.as_ref());
[INFO] [stderr]     |                                           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0283`.
[INFO] [stderr] error: Could not compile `rustyline`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e2d9152a9c53a03fea9c79daf45040ce6802de9d36b1752028446cf978003d39"`
[INFO] running `"docker" "rm" "-f" "e2d9152a9c53a03fea9c79daf45040ce6802de9d36b1752028446cf978003d39"`
[INFO] [stdout] e2d9152a9c53a03fea9c79daf45040ce6802de9d36b1752028446cf978003d39