[INFO] crate rosalind 0.10.0 is already in cache
[INFO] testing rosalind-0.10.0 against 1.38.0 for beta-1.39-1
[INFO] extracting crate rosalind 0.10.0 into work/builds/worker-2/source
[INFO] validating manifest of crates.io crate rosalind 0.10.0 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rosalind 0.10.0
[INFO] finished tweaking crates.io crate rosalind 0.10.0
[INFO] tweaked toml for crates.io crate rosalind 0.10.0 written to work/builds/worker-2/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] da807d6420946db775898ac9fed5fee76e71e22600b7bf85aa26819464ef2257
[INFO] running `"docker" "start" "-a" "da807d6420946db775898ac9fed5fee76e71e22600b7bf85aa26819464ef2257"`
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling rosalind v0.10.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0284]: type annotations required: cannot resolve `<num::BigUint as std::ops::Sub<&_>>::Output == num::BigUint`
[INFO] [stderr]   --> 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] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "da807d6420946db775898ac9fed5fee76e71e22600b7bf85aa26819464ef2257"`
[INFO] running `"docker" "rm" "-f" "da807d6420946db775898ac9fed5fee76e71e22600b7bf85aa26819464ef2257"`
[INFO] [stdout] da807d6420946db775898ac9fed5fee76e71e22600b7bf85aa26819464ef2257