[INFO] updating cached repository itsaark/helix
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/itsaark/helix
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/itsaark/helix" "work/ex/beta-1.38-1/sources/1.37.0/gh/itsaark/helix"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/itsaark/helix'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/itsaark/helix" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/itsaark/helix"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/itsaark/helix'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0d1b22b227fb8e070ea84db4a46ee06186919788
[INFO] sha for GitHub repo itsaark/helix: 0d1b22b227fb8e070ea84db4a46ee06186919788
[INFO] validating manifest of itsaark/helix 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 itsaark/helix 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 itsaark/helix
[INFO] finished frobbing itsaark/helix
[INFO] frobbed toml for itsaark/helix written to work/ex/beta-1.38-1/sources/1.37.0/gh/itsaark/helix/Cargo.toml
[INFO] started frobbing itsaark/helix
[INFO] finished frobbing itsaark/helix
[INFO] frobbed toml for itsaark/helix written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/itsaark/helix/Cargo.toml
[INFO] crate itsaark/helix 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]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing itsaark/helix 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-3/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/itsaark/helix:/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] e345ab06815496d9c26aa67b0550851d333460a6456c765903b66b6bce3b2901
[INFO] running `"docker" "start" "-a" "e345ab06815496d9c26aa67b0550851d333460a6456c765903b66b6bce3b2901"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.13
[INFO] [stderr]    Compiling ryu v0.2.4
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.26
[INFO] [stderr]    Compiling quote v0.6.6
[INFO] [stderr]    Compiling syn v0.14.8
[INFO] [stderr]    Compiling serde_derive v1.0.71
[INFO] [stderr]    Compiling helix v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/compression/perceptual.rs:109:13
[INFO] [stderr]     |
[INFO] [stderr] 109 |         let mut mask = u64::from(*byte);
[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 40.45s
[INFO] running `"docker" "inspect" "e345ab06815496d9c26aa67b0550851d333460a6456c765903b66b6bce3b2901"`
[INFO] running `"docker" "rm" "-f" "e345ab06815496d9c26aa67b0550851d333460a6456c765903b66b6bce3b2901"`
[INFO] [stdout] e345ab06815496d9c26aa67b0550851d333460a6456c765903b66b6bce3b2901
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/itsaark/helix:/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] 71970b545c31932f1f7c6950d325cfcfb6b52b48d3c74dc3238d33f3bf6b1876
[INFO] running `"docker" "start" "-a" "71970b545c31932f1f7c6950d325cfcfb6b52b48d3c74dc3238d33f3bf6b1876"`
[INFO] [stderr]    Compiling helix v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/compression/fasta.rs:211:13
[INFO] [stderr]     |
[INFO] [stderr] 211 |         for i in 0..10 {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]    --> src/compression/fasta.rs:222:13
[INFO] [stderr]     |
[INFO] [stderr] 222 |         let d = f1.distance_to(&f2);
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/compression/perceptual.rs:109:13
[INFO] [stderr]     |
[INFO] [stderr] 109 |         let mut mask = u64::from(*byte);
[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 2.30s
[INFO] running `"docker" "inspect" "71970b545c31932f1f7c6950d325cfcfb6b52b48d3c74dc3238d33f3bf6b1876"`
[INFO] running `"docker" "rm" "-f" "71970b545c31932f1f7c6950d325cfcfb6b52b48d3c74dc3238d33f3bf6b1876"`
[INFO] [stdout] 71970b545c31932f1f7c6950d325cfcfb6b52b48d3c74dc3238d33f3bf6b1876
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/itsaark/helix:/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] 928e6cd120e6957be9246b4be35aee38dd0021018af5f8de970f93ea0dda8b47
[INFO] running `"docker" "start" "-a" "928e6cd120e6957be9246b4be35aee38dd0021018af5f8de970f93ea0dda8b47"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/helix-987eafb7c696c4d0
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test compression::perceptual::tests::distance_functional ... ok
[INFO] [stdout] test compression::perceptual::tests::byte_distance_functional ... ok
[INFO] [stdout] test compression::fasta::tests::distance_to ... ok
[INFO] [stdout] test compression::perceptual::tests::hash_similarity ... ok
[INFO] [stdout] test compression::fasta::tests::valid_functional ... ok
[INFO] [stdout] test compression::perceptual::tests::distance_safety ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "928e6cd120e6957be9246b4be35aee38dd0021018af5f8de970f93ea0dda8b47"`
[INFO] running `"docker" "rm" "-f" "928e6cd120e6957be9246b4be35aee38dd0021018af5f8de970f93ea0dda8b47"`
[INFO] [stdout] 928e6cd120e6957be9246b4be35aee38dd0021018af5f8de970f93ea0dda8b47