[INFO] updating cached repository https://github.com/sgp715/word_frequencies
[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] 2f9a9111e36616f2ceffd044f16a80c15b18b05a
[INFO] testing sgp715/word_frequencies against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgp715%2Fword_frequencies" "work/builds/worker-5/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sgp715/word_frequencies on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/sgp715/word_frequencies
[INFO] finished tweaking git repo https://github.com/sgp715/word_frequencies
[INFO] tweaked toml for git repo https://github.com/sgp715/word_frequencies written to work/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/sgp715/word_frequencies already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 7ef7ee3cc74f9395aa351b814f0a5384a7d9c87bf1d708e23a4afec23da0ec84
[INFO] running `"docker" "start" "-a" "7ef7ee3cc74f9395aa351b814f0a5384a7d9c87bf1d708e23a4afec23da0ec84"`
[INFO] [stderr]    Compiling hw1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:41:13
[INFO] [stderr]    |
[INFO] [stderr] 41 |         let mut split_line = line.split(" ");
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `"docker" "inspect" "7ef7ee3cc74f9395aa351b814f0a5384a7d9c87bf1d708e23a4afec23da0ec84"`
[INFO] running `"docker" "rm" "-f" "7ef7ee3cc74f9395aa351b814f0a5384a7d9c87bf1d708e23a4afec23da0ec84"`
[INFO] [stdout] 7ef7ee3cc74f9395aa351b814f0a5384a7d9c87bf1d708e23a4afec23da0ec84
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/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" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 32d78fe42603ac9bd89738beb1fa33efe11f844e99877dc0d9323e93d83e480c
[INFO] running `"docker" "start" "-a" "32d78fe42603ac9bd89738beb1fa33efe11f844e99877dc0d9323e93d83e480c"`
[INFO] [stderr]    Compiling hw1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:41:13
[INFO] [stderr]    |
[INFO] [stderr] 41 |         let mut split_line = line.split(" ");
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `blank`
[INFO] [stderr]    --> src/main.rs:190:9
[INFO] [stderr]     |
[INFO] [stderr] 190 |         fn blank() {
[INFO] [stderr]     |         ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `"docker" "inspect" "32d78fe42603ac9bd89738beb1fa33efe11f844e99877dc0d9323e93d83e480c"`
[INFO] running `"docker" "rm" "-f" "32d78fe42603ac9bd89738beb1fa33efe11f844e99877dc0d9323e93d83e480c"`
[INFO] [stdout] 32d78fe42603ac9bd89738beb1fa33efe11f844e99877dc0d9323e93d83e480c
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/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" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 72b5775161a8b3ff8c5d7313ac0fe0ba19a39dd22dced711ab9720fa29c5048e
[INFO] running `"docker" "start" "-a" "72b5775161a8b3ff8c5d7313ac0fe0ba19a39dd22dced711ab9720fa29c5048e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/hw1-d9056142e7442e46
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test cleaned_words_tests::blank ... ok
[INFO] [stdout] test cleaned_words_tests::basic ... ok
[INFO] [stdout] test cleaned_words_tests::punctuation ... ok
[INFO] [stdout] test count_frequencies_tests::count ... ok
[INFO] [stdout] test count_frequencies_tests::blank ... ok
[INFO] [stdout] test read_words_tests::reads ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "72b5775161a8b3ff8c5d7313ac0fe0ba19a39dd22dced711ab9720fa29c5048e"`
[INFO] running `"docker" "rm" "-f" "72b5775161a8b3ff8c5d7313ac0fe0ba19a39dd22dced711ab9720fa29c5048e"`
[INFO] [stdout] 72b5775161a8b3ff8c5d7313ac0fe0ba19a39dd22dced711ab9720fa29c5048e