[INFO] updating cached repository brettmcintosh/spellcheck
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/brettmcintosh/spellcheck
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/brettmcintosh/spellcheck" "work/ex/beta-1.38-1/sources/1.37.0/gh/brettmcintosh/spellcheck"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/brettmcintosh/spellcheck'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/brettmcintosh/spellcheck" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/brettmcintosh/spellcheck"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/brettmcintosh/spellcheck'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d3ca69bbe441a84e1b5bd828bed9afd658a4e4ff
[INFO] sha for GitHub repo brettmcintosh/spellcheck: d3ca69bbe441a84e1b5bd828bed9afd658a4e4ff
[INFO] validating manifest of brettmcintosh/spellcheck 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 brettmcintosh/spellcheck 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 brettmcintosh/spellcheck
[INFO] finished frobbing brettmcintosh/spellcheck
[INFO] frobbed toml for brettmcintosh/spellcheck written to work/ex/beta-1.38-1/sources/1.37.0/gh/brettmcintosh/spellcheck/Cargo.toml
[INFO] started frobbing brettmcintosh/spellcheck
[INFO] finished frobbing brettmcintosh/spellcheck
[INFO] frobbed toml for brettmcintosh/spellcheck written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/brettmcintosh/spellcheck/Cargo.toml
[INFO] crate brettmcintosh/spellcheck 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 brettmcintosh/spellcheck 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-4/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/brettmcintosh/spellcheck:/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] ae15f4cfc479c01b9b13ea715d675bf0809f8e6970df588422d49b10823452ef
[INFO] running `"docker" "start" "-a" "ae15f4cfc479c01b9b13ea715d675bf0809f8e6970df588422d49b10823452ef"`
[INFO] [stderr]    Compiling atty v0.2.3
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling clap v2.27.1
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling trie v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0283]: type annotations required: cannot resolve `std::string::String: std::convert::From<&_>`
[INFO] [stderr]   --> src/data_structures.rs:51:48
[INFO] [stderr]    |
[INFO] [stderr] 51 |                         let mut child_prefix = String::from(prefix.as_ref());
[INFO] [stderr]    |                                                ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: required by `std::convert::From::from`
[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 `trie`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "ae15f4cfc479c01b9b13ea715d675bf0809f8e6970df588422d49b10823452ef"`
[INFO] running `"docker" "rm" "-f" "ae15f4cfc479c01b9b13ea715d675bf0809f8e6970df588422d49b10823452ef"`
[INFO] [stdout] ae15f4cfc479c01b9b13ea715d675bf0809f8e6970df588422d49b10823452ef