[INFO] crate rosalind-cli 0.0.15 is already in cache
[INFO] extracting crate rosalind-cli 0.0.15 into work/ex/beta-1.38-1/sources/1.37.0/reg/rosalind-cli/0.0.15
[INFO] extracting crate rosalind-cli 0.0.15 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rosalind-cli/0.0.15
[INFO] validating manifest of rosalind-cli-0.0.15 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 rosalind-cli-0.0.15 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 rosalind-cli-0.0.15
[INFO] finished frobbing rosalind-cli-0.0.15
[INFO] frobbed toml for rosalind-cli-0.0.15 written to work/ex/beta-1.38-1/sources/1.37.0/reg/rosalind-cli/0.0.15/Cargo.toml
[INFO] started frobbing rosalind-cli-0.0.15
[INFO] finished frobbing rosalind-cli-0.0.15
[INFO] frobbed toml for rosalind-cli-0.0.15 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rosalind-cli/0.0.15/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 rosalind-cli-0.0.15 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/rosalind-cli/0.0.15:/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] 9e82191638511aed1bc678487c0cfb7e91afe4f26dc4012f69d6bc41f7157199
[INFO] running `"docker" "start" "-a" "9e82191638511aed1bc678487c0cfb7e91afe4f26dc4012f69d6bc41f7157199"`
[INFO] [stderr]    Compiling rosalind v0.10.0
[INFO] [stderr] error[E0284]: type annotations required: cannot resolve `<num::BigUint as std::ops::Sub<&_>>::Output == num::BigUint`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rosalind-0.10.0/src/fib.rs:73:59
[INFO] [stderr]    |
[INFO] [stderr] 73 |         f = d.get(i - 2).unwrap() + d.get(i - 1).unwrap() - &(One::one());
[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 E0284`.
[INFO] [stderr] error: Could not compile `rosalind`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "9e82191638511aed1bc678487c0cfb7e91afe4f26dc4012f69d6bc41f7157199"`
[INFO] running `"docker" "rm" "-f" "9e82191638511aed1bc678487c0cfb7e91afe4f26dc4012f69d6bc41f7157199"`
[INFO] [stdout] 9e82191638511aed1bc678487c0cfb7e91afe4f26dc4012f69d6bc41f7157199