[INFO] updating cached repository Ploppz/diversity-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Ploppz/diversity-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Ploppz/diversity-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/Ploppz/diversity-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Ploppz/diversity-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Ploppz/diversity-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Ploppz/diversity-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Ploppz/diversity-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 33196d34e514e335d7a785dddf86cb54ab96ec2c
[INFO] sha for GitHub repo Ploppz/diversity-rs: 33196d34e514e335d7a785dddf86cb54ab96ec2c
[INFO] validating manifest of Ploppz/diversity-rs 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 Ploppz/diversity-rs 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 Ploppz/diversity-rs
[INFO] finished frobbing Ploppz/diversity-rs
[INFO] frobbed toml for Ploppz/diversity-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/Ploppz/diversity-rs/Cargo.toml
[INFO] started frobbing Ploppz/diversity-rs
[INFO] finished frobbing Ploppz/diversity-rs
[INFO] frobbed toml for Ploppz/diversity-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Ploppz/diversity-rs/Cargo.toml
[INFO] crate Ploppz/diversity-rs 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 Ploppz/diversity-rs 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-6/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/Ploppz/diversity-rs:/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] c51c0d507735a5f44efb0118d0919f53d472f16b449ddcdc4df2802f0d3258cd
[INFO] running `"docker" "start" "-a" "c51c0d507735a5f44efb0118d0919f53d472f16b449ddcdc4df2802f0d3258cd"`
[INFO] [stderr]    Compiling diversity v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "c51c0d507735a5f44efb0118d0919f53d472f16b449ddcdc4df2802f0d3258cd"`
[INFO] running `"docker" "rm" "-f" "c51c0d507735a5f44efb0118d0919f53d472f16b449ddcdc4df2802f0d3258cd"`
[INFO] [stdout] c51c0d507735a5f44efb0118d0919f53d472f16b449ddcdc4df2802f0d3258cd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/Ploppz/diversity-rs:/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] 1425b420295393c72e6474abcebe6d09fd9949b46506ca970788d7a60e6888b9
[INFO] running `"docker" "start" "-a" "1425b420295393c72e6474abcebe6d09fd9949b46506ca970788d7a60e6888b9"`
[INFO] [stderr]    Compiling assert_approx_eq v1.1.0
[INFO] [stderr]    Compiling ndarray-rand v0.9.0
[INFO] [stderr]    Compiling diversity v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]   --> src/lib.rs:66:16
[INFO] [stderr]    |
[INFO] [stderr] 66 |     use rand::{Rng};
[INFO] [stderr]    |                ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]   --> src/lib.rs:71:17
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let mut rng = rand::thread_rng();
[INFO] [stderr]    |                 ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let mut rng = rand::thread_rng();
[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 2.42s
[INFO] running `"docker" "inspect" "1425b420295393c72e6474abcebe6d09fd9949b46506ca970788d7a60e6888b9"`
[INFO] running `"docker" "rm" "-f" "1425b420295393c72e6474abcebe6d09fd9949b46506ca970788d7a60e6888b9"`
[INFO] [stdout] 1425b420295393c72e6474abcebe6d09fd9949b46506ca970788d7a60e6888b9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/Ploppz/diversity-rs:/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] 39e030cc3c0e8d717b29f3d2a8ee362a3686de319d6b2fd92265c899d569fb3c
[INFO] running `"docker" "start" "-a" "39e030cc3c0e8d717b29f3d2a8ee362a3686de319d6b2fd92265c899d569fb3c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/diversity-5502dd58870650b1
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::stability ... ok
[INFO] [stdout] test tests::correct_unanchored_l2_discrepancy ... ok
[INFO] [stdout] test tests::uniform ... ok
[INFO] [stdout] test tests::concentrated ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests diversity
[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" "39e030cc3c0e8d717b29f3d2a8ee362a3686de319d6b2fd92265c899d569fb3c"`
[INFO] running `"docker" "rm" "-f" "39e030cc3c0e8d717b29f3d2a8ee362a3686de319d6b2fd92265c899d569fb3c"`
[INFO] [stdout] 39e030cc3c0e8d717b29f3d2a8ee362a3686de319d6b2fd92265c899d569fb3c