[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-1.38-1/sources/1.37.0/gh/userqq/vp-tree-hamming-distance-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/gh/userqq/vp-tree-hamming-distance-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of userqq/vp-tree-hamming-distance-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 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-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "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 userqq/vp-tree-hamming-distance-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/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 8bf9344bc046169b5d463451c8d292e5b49eef11f51faaa1b20693a9821660b2
[INFO] running `"docker" "start" "-a" "8bf9344bc046169b5d463451c8d292e5b49eef11f51faaa1b20693a9821660b2"`
[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 1.64s
[INFO] running `"docker" "inspect" "8bf9344bc046169b5d463451c8d292e5b49eef11f51faaa1b20693a9821660b2"`
[INFO] running `"docker" "rm" "-f" "8bf9344bc046169b5d463451c8d292e5b49eef11f51faaa1b20693a9821660b2"`
[INFO] [stdout] 8bf9344bc046169b5d463451c8d292e5b49eef11f51faaa1b20693a9821660b2
[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/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] e86e0b7fbf1b9c28c6628aeec2ceb04ead7d69a0d5ead3152c90b6b827a90db3
[INFO] running `"docker" "start" "-a" "e86e0b7fbf1b9c28c6628aeec2ceb04ead7d69a0d5ead3152c90b6b827a90db3"`
[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 0.65s
[INFO] running `"docker" "inspect" "e86e0b7fbf1b9c28c6628aeec2ceb04ead7d69a0d5ead3152c90b6b827a90db3"`
[INFO] running `"docker" "rm" "-f" "e86e0b7fbf1b9c28c6628aeec2ceb04ead7d69a0d5ead3152c90b6b827a90db3"`
[INFO] [stdout] e86e0b7fbf1b9c28c6628aeec2ceb04ead7d69a0d5ead3152c90b6b827a90db3
[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/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 3032b7611ee20202fc7fb79c6479bad9cf993e556d6deafc7c5174aa426da1a7
[INFO] running `"docker" "start" "-a" "3032b7611ee20202fc7fb79c6479bad9cf993e556d6deafc7c5174aa426da1a7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hash_search-3813c1e28d7676b7
[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" "3032b7611ee20202fc7fb79c6479bad9cf993e556d6deafc7c5174aa426da1a7"`
[INFO] running `"docker" "rm" "-f" "3032b7611ee20202fc7fb79c6479bad9cf993e556d6deafc7c5174aa426da1a7"`
[INFO] [stdout] 3032b7611ee20202fc7fb79c6479bad9cf993e556d6deafc7c5174aa426da1a7