[INFO] updating cached repository FelixHaller/betweenness
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/FelixHaller/betweenness
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/FelixHaller/betweenness" "work/ex/beta-1.38-1/sources/1.37.0/gh/FelixHaller/betweenness"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/FelixHaller/betweenness'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/FelixHaller/betweenness" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/FelixHaller/betweenness"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/FelixHaller/betweenness'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e3af4d2a93416392435922cda1d99f42fcb6250a
[INFO] sha for GitHub repo FelixHaller/betweenness: e3af4d2a93416392435922cda1d99f42fcb6250a
[INFO] validating manifest of FelixHaller/betweenness 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 FelixHaller/betweenness 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 FelixHaller/betweenness
[INFO] finished frobbing FelixHaller/betweenness
[INFO] frobbed toml for FelixHaller/betweenness written to work/ex/beta-1.38-1/sources/1.37.0/gh/FelixHaller/betweenness/Cargo.toml
[INFO] started frobbing FelixHaller/betweenness
[INFO] finished frobbing FelixHaller/betweenness
[INFO] frobbed toml for FelixHaller/betweenness written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/FelixHaller/betweenness/Cargo.toml
[INFO] crate FelixHaller/betweenness 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 FelixHaller/betweenness 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-4/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/FelixHaller/betweenness:/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] ff24725556561d2f310280764e046bf8094eec6af18d65d97051911836de7e99
[INFO] running `"docker" "start" "-a" "ff24725556561d2f310280764e046bf8094eec6af18d65d97051911836de7e99"`
[INFO] [stderr]    Compiling roulette v0.1.0
[INFO] [stderr]    Compiling random_choice v0.3.2
[INFO] [stderr]    Compiling betweenness v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `stoch_univ_samp`
[INFO] [stderr]    --> src/main.rs:566:1
[INFO] [stderr]     |
[INFO] [stderr] 566 | fn stoch_univ_samp(parent_population: &Vec<Individual>, to_select: usize) -> Vec<Individual> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.03s
[INFO] running `"docker" "inspect" "ff24725556561d2f310280764e046bf8094eec6af18d65d97051911836de7e99"`
[INFO] running `"docker" "rm" "-f" "ff24725556561d2f310280764e046bf8094eec6af18d65d97051911836de7e99"`
[INFO] [stdout] ff24725556561d2f310280764e046bf8094eec6af18d65d97051911836de7e99
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/FelixHaller/betweenness:/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] 4e218feed7ef9e817dad5fe4f0ddb2351e94438ed41c69ba9a2d1f3cbccdffbf
[INFO] running `"docker" "start" "-a" "4e218feed7ef9e817dad5fe4f0ddb2351e94438ed41c69ba9a2d1f3cbccdffbf"`
[INFO] [stderr]    Compiling betweenness v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `stoch_univ_samp`
[INFO] [stderr]    --> src/main.rs:566:1
[INFO] [stderr]     |
[INFO] [stderr] 566 | fn stoch_univ_samp(parent_population: &Vec<Individual>, to_select: usize) -> Vec<Individual> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `"docker" "inspect" "4e218feed7ef9e817dad5fe4f0ddb2351e94438ed41c69ba9a2d1f3cbccdffbf"`
[INFO] running `"docker" "rm" "-f" "4e218feed7ef9e817dad5fe4f0ddb2351e94438ed41c69ba9a2d1f3cbccdffbf"`
[INFO] [stdout] 4e218feed7ef9e817dad5fe4f0ddb2351e94438ed41c69ba9a2d1f3cbccdffbf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/FelixHaller/betweenness:/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] eac1c20cf09f84ae4310a266a0875633704f5bfd2045087cf017773d760e146d
[INFO] running `"docker" "start" "-a" "eac1c20cf09f84ae4310a266a0875633704f5bfd2045087cf017773d760e146d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/betweenness-e858f9ccbca36714
[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" "eac1c20cf09f84ae4310a266a0875633704f5bfd2045087cf017773d760e146d"`
[INFO] running `"docker" "rm" "-f" "eac1c20cf09f84ae4310a266a0875633704f5bfd2045087cf017773d760e146d"`
[INFO] [stdout] eac1c20cf09f84ae4310a266a0875633704f5bfd2045087cf017773d760e146d