[INFO] updating cached repository https://github.com/bmcorser/similarity-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0067af1a1a35030cfa1a53752881801aee18cb8e
[INFO] testing bmcorser/similarity-rs against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbmcorser%2Fsimilarity-rs" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bmcorser/similarity-rs 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 git repo https://github.com/bmcorser/similarity-rs
[INFO] finished tweaking git repo https://github.com/bmcorser/similarity-rs
[INFO] tweaked toml for git repo https://github.com/bmcorser/similarity-rs written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/bmcorser/similarity-rs already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /big/crater/work/builds/worker-7/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/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] 557774c391fc2f89ca7b414cefa612cdc1ec3a8c392718c9c44345f0335e811d
[INFO] running `"docker" "start" "-a" "557774c391fc2f89ca7b414cefa612cdc1ec3a8c392718c9c44345f0335e811d"`
[INFO] [stderr]    Compiling itertools v0.3.25
[INFO] [stderr]    Compiling rust-tfidf v1.0.4
[INFO] [stderr]    Compiling similarity-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `itertools::Itertools`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use itertools::Itertools;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the trait bound `&str: std::borrow::Borrow<std::string::String>` is not satisfied
[INFO] [stderr]   --> src/main.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     TfIdfDefault::tfidf("a", &docs[0], docs.iter());
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^ the trait `std::borrow::Borrow<std::string::String>` is not implemented for `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: required by `tfidf::TfIdf::tfidf`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: Could not compile `similarity-rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "557774c391fc2f89ca7b414cefa612cdc1ec3a8c392718c9c44345f0335e811d"`
[INFO] running `"docker" "rm" "-f" "557774c391fc2f89ca7b414cefa612cdc1ec3a8c392718c9c44345f0335e811d"`
[INFO] [stdout] 557774c391fc2f89ca7b414cefa612cdc1ec3a8c392718c9c44345f0335e811d