[INFO] updating cached repository gefjon/conlang
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/gefjon/conlang
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/gefjon/conlang" "work/ex/beta-1.37-6/sources/1.36.0/gh/gefjon/conlang"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/gefjon/conlang'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gefjon/conlang" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gefjon/conlang"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gefjon/conlang'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3d468c5be61435c911d1dec5875ff964e739266f
[INFO] sha for GitHub repo gefjon/conlang: 3d468c5be61435c911d1dec5875ff964e739266f
[INFO] validating manifest of gefjon/conlang 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 gefjon/conlang 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 gefjon/conlang
[INFO] finished frobbing gefjon/conlang
[INFO] frobbed toml for gefjon/conlang written to work/ex/beta-1.37-6/sources/1.36.0/gh/gefjon/conlang/Cargo.toml
[INFO] started frobbing gefjon/conlang
[INFO] finished frobbing gefjon/conlang
[INFO] frobbed toml for gefjon/conlang written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gefjon/conlang/Cargo.toml
[INFO] crate gefjon/conlang 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 gefjon/conlang 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/gefjon/conlang:/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] 9ee466386c043f2601b2c26864a475c5ff5f465224fe1e1da7a72ff0890576da
[INFO] running `"docker" "start" "-a" "9ee466386c043f2601b2c26864a475c5ff5f465224fe1e1da7a72ff0890576da"`
[INFO] [stderr]    Compiling utf8parse v0.1.1
[INFO] [stderr]    Compiling dirs v1.0.4
[INFO] [stderr]    Compiling nix v0.11.0
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling nom v4.1.1
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling failure v0.1.3
[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] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "9ee466386c043f2601b2c26864a475c5ff5f465224fe1e1da7a72ff0890576da"`
[INFO] running `"docker" "rm" "-f" "9ee466386c043f2601b2c26864a475c5ff5f465224fe1e1da7a72ff0890576da"`
[INFO] [stdout] 9ee466386c043f2601b2c26864a475c5ff5f465224fe1e1da7a72ff0890576da