[INFO] updating cached repository memhak/textstat
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/memhak/textstat
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/memhak/textstat" "work/ex/beta-1.38-1/sources/1.37.0/gh/memhak/textstat"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/memhak/textstat'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/memhak/textstat" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/memhak/textstat"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/memhak/textstat'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4b7fda0a61d33924b2e4de2c67514756edb10cd8
[INFO] sha for GitHub repo memhak/textstat: 4b7fda0a61d33924b2e4de2c67514756edb10cd8
[INFO] validating manifest of memhak/textstat on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of memhak/textstat on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing memhak/textstat
[INFO] finished frobbing memhak/textstat
[INFO] frobbed toml for memhak/textstat written to work/ex/beta-1.38-1/sources/1.37.0/gh/memhak/textstat/Cargo.toml
[INFO] started frobbing memhak/textstat
[INFO] finished frobbing memhak/textstat
[INFO] frobbed toml for memhak/textstat written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/memhak/textstat/Cargo.toml
[INFO] crate memhak/textstat already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing memhak/textstat against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/memhak/textstat:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 04e9f0ff3907ad4e1f1faf8ded4bb15e33b5f1a8b2de5a70f443fc9493c589d4
[INFO] running `"docker" "start" "-a" "04e9f0ff3907ad4e1f1faf8ded4bb15e33b5f1a8b2de5a70f443fc9493c589d4"`
[INFO] [stderr]    Compiling textstat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `word_length` is never read
[INFO] [stderr]   --> src/main.rs:30:10
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let mut word_length: usize = 0; // length of the current words
[INFO] [stderr]    |             ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `"docker" "inspect" "04e9f0ff3907ad4e1f1faf8ded4bb15e33b5f1a8b2de5a70f443fc9493c589d4"`
[INFO] running `"docker" "rm" "-f" "04e9f0ff3907ad4e1f1faf8ded4bb15e33b5f1a8b2de5a70f443fc9493c589d4"`
[INFO] [stdout] 04e9f0ff3907ad4e1f1faf8ded4bb15e33b5f1a8b2de5a70f443fc9493c589d4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/memhak/textstat:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 525732632c631726eeee40214707dad26f4c69a401011c39590b08d5265905b3
[INFO] running `"docker" "start" "-a" "525732632c631726eeee40214707dad26f4c69a401011c39590b08d5265905b3"`
[INFO] [stderr]    Compiling textstat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `word_length` is never read
[INFO] [stderr]   --> src/main.rs:30:10
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let mut word_length: usize = 0; // length of the current words
[INFO] [stderr]    |             ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `"docker" "inspect" "525732632c631726eeee40214707dad26f4c69a401011c39590b08d5265905b3"`
[INFO] running `"docker" "rm" "-f" "525732632c631726eeee40214707dad26f4c69a401011c39590b08d5265905b3"`
[INFO] [stdout] 525732632c631726eeee40214707dad26f4c69a401011c39590b08d5265905b3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/memhak/textstat:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 240af06aba681277f45e046505b14abec86212c01ed0845a34ac1fd959594610
[INFO] running `"docker" "start" "-a" "240af06aba681277f45e046505b14abec86212c01ed0845a34ac1fd959594610"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[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] [stderr]      Running /opt/crater/target/debug/deps/textstat-d23bdf4e66b89cd8
[INFO] running `"docker" "inspect" "240af06aba681277f45e046505b14abec86212c01ed0845a34ac1fd959594610"`
[INFO] running `"docker" "rm" "-f" "240af06aba681277f45e046505b14abec86212c01ed0845a34ac1fd959594610"`
[INFO] [stdout] 240af06aba681277f45e046505b14abec86212c01ed0845a34ac1fd959594610