[INFO] updating cached repository sts10/compound-passphrase-list-safety-checker
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sts10/compound-passphrase-list-safety-checker
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sts10/compound-passphrase-list-safety-checker" "work/ex/beta-1.38-1/sources/1.37.0/gh/sts10/compound-passphrase-list-safety-checker"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/sts10/compound-passphrase-list-safety-checker'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sts10/compound-passphrase-list-safety-checker" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sts10/compound-passphrase-list-safety-checker"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sts10/compound-passphrase-list-safety-checker'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5008887809c077ffb45bebc24ff56816068a116b
[INFO] sha for GitHub repo sts10/compound-passphrase-list-safety-checker: 5008887809c077ffb45bebc24ff56816068a116b
[INFO] validating manifest of sts10/compound-passphrase-list-safety-checker 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 sts10/compound-passphrase-list-safety-checker 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 sts10/compound-passphrase-list-safety-checker
[INFO] finished frobbing sts10/compound-passphrase-list-safety-checker
[INFO] frobbed toml for sts10/compound-passphrase-list-safety-checker written to work/ex/beta-1.38-1/sources/1.37.0/gh/sts10/compound-passphrase-list-safety-checker/Cargo.toml
[INFO] started frobbing sts10/compound-passphrase-list-safety-checker
[INFO] finished frobbing sts10/compound-passphrase-list-safety-checker
[INFO] frobbed toml for sts10/compound-passphrase-list-safety-checker written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sts10/compound-passphrase-list-safety-checker/Cargo.toml
[INFO] crate sts10/compound-passphrase-list-safety-checker 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 sts10/compound-passphrase-list-safety-checker against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sts10/compound-passphrase-list-safety-checker:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 66f1baa458d9819630d69b18d039c3e236b544333983c643d8ab16b0c65f9f04
[INFO] running `"docker" "start" "-a" "66f1baa458d9819630d69b18d039c3e236b544333983c643d8ab16b0c65f9f04"`
[INFO] [stderr]    Compiling sum-word-checker v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `left_word`
[INFO] [stderr]   --> src/main.rs:96:25
[INFO] [stderr]    |
[INFO] [stderr] 96 |                     let left_word = format!("{}{}", left_overhang, overlap);
[INFO] [stderr]    |                         ^^^^^^^^^ help: consider prefixing with an underscore: `_left_word`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `"docker" "inspect" "66f1baa458d9819630d69b18d039c3e236b544333983c643d8ab16b0c65f9f04"`
[INFO] running `"docker" "rm" "-f" "66f1baa458d9819630d69b18d039c3e236b544333983c643d8ab16b0c65f9f04"`
[INFO] [stdout] 66f1baa458d9819630d69b18d039c3e236b544333983c643d8ab16b0c65f9f04
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sts10/compound-passphrase-list-safety-checker:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 457ff60a123afef96f2b43e9188e397711ff567634e43c13cfa2ba500a991db3
[INFO] running `"docker" "start" "-a" "457ff60a123afef96f2b43e9188e397711ff567634e43c13cfa2ba500a991db3"`
[INFO] [stderr]    Compiling sum-word-checker v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `left_word`
[INFO] [stderr]   --> src/main.rs:96:25
[INFO] [stderr]    |
[INFO] [stderr] 96 |                     let left_word = format!("{}{}", left_overhang, overlap);
[INFO] [stderr]    |                         ^^^^^^^^^ help: consider prefixing with an underscore: `_left_word`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "457ff60a123afef96f2b43e9188e397711ff567634e43c13cfa2ba500a991db3"`
[INFO] running `"docker" "rm" "-f" "457ff60a123afef96f2b43e9188e397711ff567634e43c13cfa2ba500a991db3"`
[INFO] [stdout] 457ff60a123afef96f2b43e9188e397711ff567634e43c13cfa2ba500a991db3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sts10/compound-passphrase-list-safety-checker:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 6bba797cfdf9d97c4d729448469f57d9656d819cc1ff2189a393438528117d4a
[INFO] running `"docker" "start" "-a" "6bba797cfdf9d97c4d729448469f57d9656d819cc1ff2189a393438528117d4a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/sum_word_checker-16b5d6082f3c78a0
[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" "6bba797cfdf9d97c4d729448469f57d9656d819cc1ff2189a393438528117d4a"`
[INFO] running `"docker" "rm" "-f" "6bba797cfdf9d97c4d729448469f57d9656d819cc1ff2189a393438528117d4a"`
[INFO] [stdout] 6bba797cfdf9d97c4d729448469f57d9656d819cc1ff2189a393438528117d4a