[INFO] updating cached repository buaya91/rust-eulers
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/buaya91/rust-eulers
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/buaya91/rust-eulers" "work/ex/beta-1.37-6/sources/1.36.0/gh/buaya91/rust-eulers"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/buaya91/rust-eulers'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/buaya91/rust-eulers" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/buaya91/rust-eulers"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/buaya91/rust-eulers'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 477ba85cad6a85dae43ede51755c7518b30f6fe8
[INFO] sha for GitHub repo buaya91/rust-eulers: 477ba85cad6a85dae43ede51755c7518b30f6fe8
[INFO] validating manifest of buaya91/rust-eulers on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of buaya91/rust-eulers on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing buaya91/rust-eulers
[INFO] finished frobbing buaya91/rust-eulers
[INFO] frobbed toml for buaya91/rust-eulers written to work/ex/beta-1.37-6/sources/1.36.0/gh/buaya91/rust-eulers/Cargo.toml
[INFO] started frobbing buaya91/rust-eulers
[INFO] finished frobbing buaya91/rust-eulers
[INFO] frobbed toml for buaya91/rust-eulers written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/buaya91/rust-eulers/Cargo.toml
[INFO] crate buaya91/rust-eulers already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing buaya91/rust-eulers against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/buaya91/rust-eulers:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] d8129e5b0e3923e16e3b91a0a6b4b122200394c8b44c01678f0728b43a117c4d
[INFO] running `"docker" "start" "-a" "d8129e5b0e3923e16e3b91a0a6b4b122200394c8b44c01678f0728b43a117c4d"`
[INFO] [stderr]    Compiling rust-eulers v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `odd`
[INFO] [stderr]   --> src/solutions.rs:20:21
[INFO] [stderr]    |
[INFO] [stderr] 20 |                     odd => acc,
[INFO] [stderr]    |                     ^^^ help: consider prefixing with an underscore: `_odd`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem101`
[INFO] [stderr]   --> src/solutions.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn problem101() -> i64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.53s
[INFO] running `"docker" "inspect" "d8129e5b0e3923e16e3b91a0a6b4b122200394c8b44c01678f0728b43a117c4d"`
[INFO] running `"docker" "rm" "-f" "d8129e5b0e3923e16e3b91a0a6b4b122200394c8b44c01678f0728b43a117c4d"`
[INFO] [stdout] d8129e5b0e3923e16e3b91a0a6b4b122200394c8b44c01678f0728b43a117c4d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/buaya91/rust-eulers:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 10bb2236f60bbfb4b149130352841d5c0196f4a2c553abc28bb4c4d3999cc720
[INFO] running `"docker" "start" "-a" "10bb2236f60bbfb4b149130352841d5c0196f4a2c553abc28bb4c4d3999cc720"`
[INFO] [stderr]    Compiling rust-eulers v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `odd`
[INFO] [stderr]   --> src/solutions.rs:20:21
[INFO] [stderr]    |
[INFO] [stderr] 20 |                     odd => acc,
[INFO] [stderr]    |                     ^^^ help: consider prefixing with an underscore: `_odd`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem101`
[INFO] [stderr]   --> src/solutions.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn problem101() -> i64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `"docker" "inspect" "10bb2236f60bbfb4b149130352841d5c0196f4a2c553abc28bb4c4d3999cc720"`
[INFO] running `"docker" "rm" "-f" "10bb2236f60bbfb4b149130352841d5c0196f4a2c553abc28bb4c4d3999cc720"`
[INFO] [stdout] 10bb2236f60bbfb4b149130352841d5c0196f4a2c553abc28bb4c4d3999cc720
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/buaya91/rust-eulers:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] d93408ae753e46165223330a814e81d97beb3b6e6bace20f4a43acb420039462
[INFO] running `"docker" "start" "-a" "d93408ae753e46165223330a814e81d97beb3b6e6bace20f4a43acb420039462"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_eulers-3337342684bb1920
[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" "d93408ae753e46165223330a814e81d97beb3b6e6bace20f4a43acb420039462"`
[INFO] running `"docker" "rm" "-f" "d93408ae753e46165223330a814e81d97beb3b6e6bace20f4a43acb420039462"`
[INFO] [stdout] d93408ae753e46165223330a814e81d97beb3b6e6bace20f4a43acb420039462