[INFO] updating cached repository samrayleung/hound
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/samrayleung/hound
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/samrayleung/hound" "work/ex/beta-1.38-1/sources/1.37.0/gh/samrayleung/hound"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/samrayleung/hound'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/samrayleung/hound" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/samrayleung/hound"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/samrayleung/hound'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c27e11511035ec1b4a38b0376bf8dc26979160aa
[INFO] sha for GitHub repo samrayleung/hound: c27e11511035ec1b4a38b0376bf8dc26979160aa
[INFO] validating manifest of samrayleung/hound 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 samrayleung/hound 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 samrayleung/hound
[INFO] finished frobbing samrayleung/hound
[INFO] frobbed toml for samrayleung/hound written to work/ex/beta-1.38-1/sources/1.37.0/gh/samrayleung/hound/Cargo.toml
[INFO] started frobbing samrayleung/hound
[INFO] finished frobbing samrayleung/hound
[INFO] frobbed toml for samrayleung/hound written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/samrayleung/hound/Cargo.toml
[INFO] crate samrayleung/hound 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 samrayleung/hound 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-4/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/samrayleung/hound:/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] 8b3087483c70db78ab602cf7b4980c23f11570b1fbffba7a5611a1d9e590f0d8
[INFO] running `"docker" "start" "-a" "8b3087483c70db78ab602cf7b4980c23f11570b1fbffba7a5611a1d9e590f0d8"`
[INFO] [stderr]    Compiling hound v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     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: static item is never used: `HEX_CHAR`
[INFO] [stderr]  --> src/main.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | static HEX_CHAR: &'static str = "1234567890abcdefABCDEF";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `"docker" "inspect" "8b3087483c70db78ab602cf7b4980c23f11570b1fbffba7a5611a1d9e590f0d8"`
[INFO] running `"docker" "rm" "-f" "8b3087483c70db78ab602cf7b4980c23f11570b1fbffba7a5611a1d9e590f0d8"`
[INFO] [stdout] 8b3087483c70db78ab602cf7b4980c23f11570b1fbffba7a5611a1d9e590f0d8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/samrayleung/hound:/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] 5ce1ff2bfda8155f802e8f597f7400dc8d4fcf6e48a482f2533bf1d0ec65df9d
[INFO] running `"docker" "start" "-a" "5ce1ff2bfda8155f802e8f597f7400dc8d4fcf6e48a482f2533bf1d0ec65df9d"`
[INFO] [stderr]    Compiling hound v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     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: static item is never used: `HEX_CHAR`
[INFO] [stderr]  --> src/main.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | static HEX_CHAR: &'static str = "1234567890abcdefABCDEF";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "5ce1ff2bfda8155f802e8f597f7400dc8d4fcf6e48a482f2533bf1d0ec65df9d"`
[INFO] running `"docker" "rm" "-f" "5ce1ff2bfda8155f802e8f597f7400dc8d4fcf6e48a482f2533bf1d0ec65df9d"`
[INFO] [stdout] 5ce1ff2bfda8155f802e8f597f7400dc8d4fcf6e48a482f2533bf1d0ec65df9d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/samrayleung/hound:/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] f215ddc53a96ae1955bd0664d2d654a7d320aad1ee741eefc2db5b4755055167
[INFO] running `"docker" "start" "-a" "f215ddc53a96ae1955bd0664d2d654a7d320aad1ee741eefc2db5b4755055167"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hound-a971779f8c3c9aec
[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" "f215ddc53a96ae1955bd0664d2d654a7d320aad1ee741eefc2db5b4755055167"`
[INFO] running `"docker" "rm" "-f" "f215ddc53a96ae1955bd0664d2d654a7d320aad1ee741eefc2db5b4755055167"`
[INFO] [stdout] f215ddc53a96ae1955bd0664d2d654a7d320aad1ee741eefc2db5b4755055167