[INFO] updating cached repository shybyte/exercises-in-programming-style-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/shybyte/exercises-in-programming-style-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/shybyte/exercises-in-programming-style-rust" "work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/shybyte/exercises-in-programming-style-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/shybyte/exercises-in-programming-style-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/shybyte/exercises-in-programming-style-rust" "work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/shybyte/exercises-in-programming-style-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/shybyte/exercises-in-programming-style-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] eeb1242d7416b4a4b163f9be2fdb4c19984f436f
[INFO] sha for GitHub repo shybyte/exercises-in-programming-style-rust: eeb1242d7416b4a4b163f9be2fdb4c19984f436f
[INFO] validating manifest of shybyte/exercises-in-programming-style-rust on toolchain master#e2f221c75932de7a29845c8d6f1f73536ad00c41
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of shybyte/exercises-in-programming-style-rust on toolchain try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing shybyte/exercises-in-programming-style-rust
[INFO] finished frobbing shybyte/exercises-in-programming-style-rust
[INFO] frobbed toml for shybyte/exercises-in-programming-style-rust written to work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/shybyte/exercises-in-programming-style-rust/Cargo.toml
[INFO] started frobbing shybyte/exercises-in-programming-style-rust
[INFO] finished frobbing shybyte/exercises-in-programming-style-rust
[INFO] frobbed toml for shybyte/exercises-in-programming-style-rust written to work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/shybyte/exercises-in-programming-style-rust/Cargo.toml
[INFO] crate shybyte/exercises-in-programming-style-rust has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking shybyte/exercises-in-programming-style-rust against try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff for pr-57617
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57617/worker-4/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/shybyte/exercises-in-programming-style-rust:/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=forbid" "-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" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0a06340000cb3b3ce533a3f43b409c86d6300b0f45bef7dd956dfab63de58139
[INFO] running `"docker" "start" "-a" "0a06340000cb3b3ce533a3f43b409c86d6300b0f45bef7dd956dfab63de58139"`
[INFO] [stderr]     Checking exercises_in_programming_style_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/bin/04-cookbook.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     /// Takes a path to a file and assigns the entire
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/bin/04-cookbook.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     /// Replaces all nonalphanumeric chars in data with white space
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/bin/04-cookbook.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     /// Scans data for words, filling the global variable words
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/bin/04-cookbook.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     /// Scans data for words, filling the global variable words
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/bin/04-cookbook.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     /// Creates a list of pairs associating words with frequencies
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/bin/04-cookbook.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     /// Sorts word_freqs by frequency
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/bin/04-cookbook.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     /// Takes a path to a file and assigns the entire
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/bin/04-cookbook.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     /// Replaces all nonalphanumeric chars in data with white space
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/bin/04-cookbook.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     /// Scans data for words, filling the global variable words
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/bin/04-cookbook.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     /// Scans data for words, filling the global variable words
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/bin/04-cookbook.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     /// Creates a list of pairs associating words with frequencies
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/bin/04-cookbook.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     /// Sorts word_freqs by frequency
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.67s
[INFO] running `"docker" "inspect" "0a06340000cb3b3ce533a3f43b409c86d6300b0f45bef7dd956dfab63de58139"`
[INFO] running `"docker" "rm" "-f" "0a06340000cb3b3ce533a3f43b409c86d6300b0f45bef7dd956dfab63de58139"`
[INFO] [stdout] 0a06340000cb3b3ce533a3f43b409c86d6300b0f45bef7dd956dfab63de58139