[INFO] updating cached repository userqq/vp-tree-hamming-distance-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/userqq/vp-tree-hamming-distance-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/userqq/vp-tree-hamming-distance-rs" "work/ex/beta-1.37-6/sources/1.36.0/gh/userqq/vp-tree-hamming-distance-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/userqq/vp-tree-hamming-distance-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/userqq/vp-tree-hamming-distance-rs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/userqq/vp-tree-hamming-distance-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/userqq/vp-tree-hamming-distance-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d2719cf6934bd6d1a71fb662b9cc63a92207818b
[INFO] sha for GitHub repo userqq/vp-tree-hamming-distance-rs: d2719cf6934bd6d1a71fb662b9cc63a92207818b
[INFO] validating manifest of userqq/vp-tree-hamming-distance-rs 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 userqq/vp-tree-hamming-distance-rs 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 userqq/vp-tree-hamming-distance-rs
[INFO] finished frobbing userqq/vp-tree-hamming-distance-rs
[INFO] frobbed toml for userqq/vp-tree-hamming-distance-rs written to work/ex/beta-1.37-6/sources/1.36.0/gh/userqq/vp-tree-hamming-distance-rs/Cargo.toml
[INFO] started frobbing userqq/vp-tree-hamming-distance-rs
[INFO] finished frobbing userqq/vp-tree-hamming-distance-rs
[INFO] frobbed toml for userqq/vp-tree-hamming-distance-rs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/userqq/vp-tree-hamming-distance-rs/Cargo.toml
[INFO] crate userqq/vp-tree-hamming-distance-rs 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing userqq/vp-tree-hamming-distance-rs 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-5/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/userqq/vp-tree-hamming-distance-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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] ea229b3912fc36656ba0b723c5f55f2b0344027109e5aad8af1615406e3590cd
[INFO] running `"docker" "start" "-a" "ea229b3912fc36656ba0b723c5f55f2b0344027109e5aad8af1615406e3590cd"`
[INFO] [stderr]    Compiling bk-tree v0.2.0
[INFO] [stderr]    Compiling hash_search v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/main.rs:13:25
[INFO] [stderr]    |
[INFO] [stderr] 13 |             let mut k = (1 << i);
[INFO] [stderr]    |                         ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:13:17
[INFO] [stderr]    |
[INFO] [stderr] 13 |             let mut k = (1 << i);
[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 1.31s
[INFO] running `"docker" "inspect" "ea229b3912fc36656ba0b723c5f55f2b0344027109e5aad8af1615406e3590cd"`
[INFO] running `"docker" "rm" "-f" "ea229b3912fc36656ba0b723c5f55f2b0344027109e5aad8af1615406e3590cd"`
[INFO] [stdout] ea229b3912fc36656ba0b723c5f55f2b0344027109e5aad8af1615406e3590cd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/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/userqq/vp-tree-hamming-distance-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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] e4d721e0ef233290266f860b560b46df42becb6b68daa534c99153cd7a3ccb75
[INFO] running `"docker" "start" "-a" "e4d721e0ef233290266f860b560b46df42becb6b68daa534c99153cd7a3ccb75"`
[INFO] [stderr]    Compiling hash_search v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/main.rs:13:25
[INFO] [stderr]    |
[INFO] [stderr] 13 |             let mut k = (1 << i);
[INFO] [stderr]    |                         ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:13:17
[INFO] [stderr]    |
[INFO] [stderr] 13 |             let mut k = (1 << i);
[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 0.58s
[INFO] running `"docker" "inspect" "e4d721e0ef233290266f860b560b46df42becb6b68daa534c99153cd7a3ccb75"`
[INFO] running `"docker" "rm" "-f" "e4d721e0ef233290266f860b560b46df42becb6b68daa534c99153cd7a3ccb75"`
[INFO] [stdout] e4d721e0ef233290266f860b560b46df42becb6b68daa534c99153cd7a3ccb75
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/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/userqq/vp-tree-hamming-distance-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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] f23edff2d6b747cb905a6f2d4825f1d55fc6764a6787d24c3890f4fb658b72f5
[INFO] running `"docker" "start" "-a" "f23edff2d6b747cb905a6f2d4825f1d55fc6764a6787d24c3890f4fb658b72f5"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hash_search-ba7bf37618d79b61
[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" "f23edff2d6b747cb905a6f2d4825f1d55fc6764a6787d24c3890f4fb658b72f5"`
[INFO] running `"docker" "rm" "-f" "f23edff2d6b747cb905a6f2d4825f1d55fc6764a6787d24c3890f4fb658b72f5"`
[INFO] [stdout] f23edff2d6b747cb905a6f2d4825f1d55fc6764a6787d24c3890f4fb658b72f5