[INFO] updating cached repository https://github.com/yuzu441/nlp100-rust
[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] 61b2ac3d4be5538dfb4980f6dbfef826fd4d0677
[INFO] testing yuzu441/nlp100-rust against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuzu441%2Fnlp100-rust" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yuzu441/nlp100-rust 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/yuzu441/nlp100-rust
[INFO] finished tweaking git repo https://github.com/yuzu441/nlp100-rust
[INFO] tweaked toml for git repo https://github.com/yuzu441/nlp100-rust written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/yuzu441/nlp100-rust 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] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/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] 95a3cccd332713d4d8794e87b6522f00ad3ce68b35b2f604d24717f15e4be9e6
[INFO] running `"docker" "start" "-a" "95a3cccd332713d4d8794e87b6522f00ad3ce68b35b2f604d24717f15e4be9e6"`
[INFO] [stderr]    Compiling nlp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right_matches': superseded by `trim_end_matches`
[INFO] [stderr]   --> src/chapter01.rs:46:26
[INFO] [stderr]    |
[INFO] [stderr] 46 |         .map(|word| word.trim_right_matches(pat))
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::slice_unchecked': use `get_unchecked(begin..end)` instead
[INFO] [stderr]   --> src/chapter01.rs:64:27
[INFO] [stderr]    |
[INFO] [stderr] 64 |                 true => w.slice_unchecked(0, 1),
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::slice_unchecked': use `get_unchecked(begin..end)` instead
[INFO] [stderr]   --> src/chapter01.rs:65:28
[INFO] [stderr]    |
[INFO] [stderr] 65 |                 false => w.slice_unchecked(0, 2)
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.10s
[INFO] running `"docker" "inspect" "95a3cccd332713d4d8794e87b6522f00ad3ce68b35b2f604d24717f15e4be9e6"`
[INFO] running `"docker" "rm" "-f" "95a3cccd332713d4d8794e87b6522f00ad3ce68b35b2f604d24717f15e4be9e6"`
[INFO] [stdout] 95a3cccd332713d4d8794e87b6522f00ad3ce68b35b2f604d24717f15e4be9e6
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4d4380c71a7cc4fa81890235c3358c4bdb5e955866f9d59274d05fdfa09245c4
[INFO] running `"docker" "start" "-a" "4d4380c71a7cc4fa81890235c3358c4bdb5e955866f9d59274d05fdfa09245c4"`
[INFO] [stderr]    Compiling nlp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right_matches': superseded by `trim_end_matches`
[INFO] [stderr]   --> src/chapter01.rs:46:26
[INFO] [stderr]    |
[INFO] [stderr] 46 |         .map(|word| word.trim_right_matches(pat))
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::slice_unchecked': use `get_unchecked(begin..end)` instead
[INFO] [stderr]   --> src/chapter01.rs:64:27
[INFO] [stderr]    |
[INFO] [stderr] 64 |                 true => w.slice_unchecked(0, 1),
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::slice_unchecked': use `get_unchecked(begin..end)` instead
[INFO] [stderr]   --> src/chapter01.rs:65:28
[INFO] [stderr]    |
[INFO] [stderr] 65 |                 false => w.slice_unchecked(0, 2)
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.04s
[INFO] running `"docker" "inspect" "4d4380c71a7cc4fa81890235c3358c4bdb5e955866f9d59274d05fdfa09245c4"`
[INFO] running `"docker" "rm" "-f" "4d4380c71a7cc4fa81890235c3358c4bdb5e955866f9d59274d05fdfa09245c4"`
[INFO] [stdout] 4d4380c71a7cc4fa81890235c3358c4bdb5e955866f9d59274d05fdfa09245c4
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/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" "test" "--frozen"`
[INFO] [stdout] 56daf1de966d4b1f26879784ba1ada0a692b8be566a78de8841a710873b0755c
[INFO] running `"docker" "start" "-a" "56daf1de966d4b1f26879784ba1ada0a692b8be566a78de8841a710873b0755c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/nlp-d436247ed5e1f3a0
[INFO] [stdout] running 8 tests
[INFO] [stdout] test chapter01::q00_test ... ok
[INFO] [stdout] test chapter01::q01_test ... ok
[INFO] [stdout] test chapter01::q02_test ... ok
[INFO] [stdout] test chapter01::q03_test ... ok
[INFO] [stdout] test chapter01::q04_test ... ok
[INFO] [stdout] test chapter01::q05_char_bi_gram ... ok
[INFO] [stdout] test chapter01::q05_test_bi_gram ... ok
[INFO] [stdout] test chapter01::q05_test_uni_gram ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/nlp-68790c1b172d1870
[INFO] [stderr]    Doc-tests nlp
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "56daf1de966d4b1f26879784ba1ada0a692b8be566a78de8841a710873b0755c"`
[INFO] running `"docker" "rm" "-f" "56daf1de966d4b1f26879784ba1ada0a692b8be566a78de8841a710873b0755c"`
[INFO] [stdout] 56daf1de966d4b1f26879784ba1ada0a692b8be566a78de8841a710873b0755c