[INFO] updating cached repository https://github.com/sscdotopen/puppies
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c51e6a702c8cdbe4d8d271cce9687174af290b8f
[INFO] testing sscdotopen/puppies against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsscdotopen%2Fpuppies" "work/builds/worker-3/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sscdotopen/puppies on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/sscdotopen/puppies
[INFO] finished tweaking git repo https://github.com/sscdotopen/puppies
[INFO] tweaked toml for git repo https://github.com/sscdotopen/puppies written to work/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/sscdotopen/puppies already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] a3bdfd716520b5cd9d77b2b2086c2740b71aeeb43304e1bdc62577bef94820b1
[INFO] running `"docker" "start" "-a" "a3bdfd716520b5cd9d77b2b2086c2740b71aeeb43304e1bdc62577bef94820b1"`
[INFO] [stderr]    Compiling bencher v0.1.3
[INFO] [stderr]    Compiling csv v0.15.0
[INFO] [stderr]    Compiling scoped-pool v1.0.0
[INFO] [stderr]    Compiling puppies v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:83:21
[INFO] [stderr]    |
[INFO] [stderr] 83 |                 let mut user_history = samples_of_a.get_mut(user_idx).unwrap();
[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 5.04s
[INFO] running `"docker" "inspect" "a3bdfd716520b5cd9d77b2b2086c2740b71aeeb43304e1bdc62577bef94820b1"`
[INFO] running `"docker" "rm" "-f" "a3bdfd716520b5cd9d77b2b2086c2740b71aeeb43304e1bdc62577bef94820b1"`
[INFO] [stdout] a3bdfd716520b5cd9d77b2b2086c2740b71aeeb43304e1bdc62577bef94820b1
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9881ccb5c6e33c932552e68c95accb2b4667d547ab9c6397946739a3574ffc45
[INFO] running `"docker" "start" "-a" "9881ccb5c6e33c932552e68c95accb2b4667d547ab9c6397946739a3574ffc45"`
[INFO] [stderr]    Compiling puppies v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:83:21
[INFO] [stderr]    |
[INFO] [stderr] 83 |                 let mut user_history = samples_of_a.get_mut(user_idx).unwrap();
[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 1.69s
[INFO] running `"docker" "inspect" "9881ccb5c6e33c932552e68c95accb2b4667d547ab9c6397946739a3574ffc45"`
[INFO] running `"docker" "rm" "-f" "9881ccb5c6e33c932552e68c95accb2b4667d547ab9c6397946739a3574ffc45"`
[INFO] [stdout] 9881ccb5c6e33c932552e68c95accb2b4667d547ab9c6397946739a3574ffc45
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 6928c4a0b0e4c77460f829ececc31720b53fab719e05b079270701ca5f447db7
[INFO] running `"docker" "start" "-a" "6928c4a0b0e4c77460f829ececc31720b53fab719e05b079270701ca5f447db7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/puppies-260db633dcdbef4d
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test llr::tests::topk ... ok
[INFO] [stdout] test llr::tests::llr ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/main-b552aafaf96a6185
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests puppies
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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] [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" "6928c4a0b0e4c77460f829ececc31720b53fab719e05b079270701ca5f447db7"`
[INFO] running `"docker" "rm" "-f" "6928c4a0b0e4c77460f829ececc31720b53fab719e05b079270701ca5f447db7"`
[INFO] [stdout] 6928c4a0b0e4c77460f829ececc31720b53fab719e05b079270701ca5f447db7