[INFO] updating cached repository yoshuawuyts/hot-ranking-algorithm-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yoshuawuyts/hot-ranking-algorithm-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yoshuawuyts/hot-ranking-algorithm-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/yoshuawuyts/hot-ranking-algorithm-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/yoshuawuyts/hot-ranking-algorithm-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yoshuawuyts/hot-ranking-algorithm-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yoshuawuyts/hot-ranking-algorithm-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yoshuawuyts/hot-ranking-algorithm-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f58b66e90543569a9f420bad89c7fd91443d3bc1
[INFO] sha for GitHub repo yoshuawuyts/hot-ranking-algorithm-rs: f58b66e90543569a9f420bad89c7fd91443d3bc1
[INFO] validating manifest of yoshuawuyts/hot-ranking-algorithm-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 yoshuawuyts/hot-ranking-algorithm-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 yoshuawuyts/hot-ranking-algorithm-rs
[INFO] finished frobbing yoshuawuyts/hot-ranking-algorithm-rs
[INFO] frobbed toml for yoshuawuyts/hot-ranking-algorithm-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/yoshuawuyts/hot-ranking-algorithm-rs/Cargo.toml
[INFO] started frobbing yoshuawuyts/hot-ranking-algorithm-rs
[INFO] finished frobbing yoshuawuyts/hot-ranking-algorithm-rs
[INFO] frobbed toml for yoshuawuyts/hot-ranking-algorithm-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yoshuawuyts/hot-ranking-algorithm-rs/Cargo.toml
[INFO] crate yoshuawuyts/hot-ranking-algorithm-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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/yoshuawuyts/hot-ranking-algorithm-rs/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 yoshuawuyts/hot-ranking-algorithm-rs against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/yoshuawuyts/hot-ranking-algorithm-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 1769bb5ea276cb613efff0c894733fe7a76a131793273e3e2b68bdd6788d6004
[INFO] running `"docker" "start" "-a" "1769bb5ea276cb613efff0c894733fe7a76a131793273e3e2b68bdd6788d6004"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling chrono v0.4.7
[INFO] [stderr]    Compiling hot-ranking-algorithm v2.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.25s
[INFO] running `"docker" "inspect" "1769bb5ea276cb613efff0c894733fe7a76a131793273e3e2b68bdd6788d6004"`
[INFO] running `"docker" "rm" "-f" "1769bb5ea276cb613efff0c894733fe7a76a131793273e3e2b68bdd6788d6004"`
[INFO] [stdout] 1769bb5ea276cb613efff0c894733fe7a76a131793273e3e2b68bdd6788d6004
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/yoshuawuyts/hot-ranking-algorithm-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 30c9b98535eb62dff490a4a091dd85e37112be9faf36274c03e5e8d3ddb4d9b5
[INFO] running `"docker" "start" "-a" "30c9b98535eb62dff490a4a091dd85e37112be9faf36274c03e5e8d3ddb4d9b5"`
[INFO] [stderr]    Compiling hot-ranking-algorithm v2.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "30c9b98535eb62dff490a4a091dd85e37112be9faf36274c03e5e8d3ddb4d9b5"`
[INFO] running `"docker" "rm" "-f" "30c9b98535eb62dff490a4a091dd85e37112be9faf36274c03e5e8d3ddb4d9b5"`
[INFO] [stdout] 30c9b98535eb62dff490a4a091dd85e37112be9faf36274c03e5e8d3ddb4d9b5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/yoshuawuyts/hot-ranking-algorithm-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 8c442108eb29160cc90caadff3135323a34fe5753a4d28e7480eadb2c566acbd
[INFO] running `"docker" "start" "-a" "8c442108eb29160cc90caadff3135323a34fe5753a4d28e7480eadb2c566acbd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hot_ranking_algorithm-0a698c0003c37803
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::one_upvote_twenty_downvotes ... ok
[INFO] [stdout] test tests::one_upvote_one_downvote ... ok
[INFO] [stdout] test tests::twenty_upvotes_zero_downvotes ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests hot-ranking-algorithm
[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" "8c442108eb29160cc90caadff3135323a34fe5753a4d28e7480eadb2c566acbd"`
[INFO] running `"docker" "rm" "-f" "8c442108eb29160cc90caadff3135323a34fe5753a4d28e7480eadb2c566acbd"`
[INFO] [stdout] 8c442108eb29160cc90caadff3135323a34fe5753a4d28e7480eadb2c566acbd