[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 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] d664b474b8824b2dabc2b6d739ef32972ab25c6e9d50b68486bd86563cc6b8bc
[INFO] running `"docker" "start" "-a" "d664b474b8824b2dabc2b6d739ef32972ab25c6e9d50b68486bd86563cc6b8bc"`
[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 1.15s
[INFO] running `"docker" "inspect" "d664b474b8824b2dabc2b6d739ef32972ab25c6e9d50b68486bd86563cc6b8bc"`
[INFO] running `"docker" "rm" "-f" "d664b474b8824b2dabc2b6d739ef32972ab25c6e9d50b68486bd86563cc6b8bc"`
[INFO] [stdout] d664b474b8824b2dabc2b6d739ef32972ab25c6e9d50b68486bd86563cc6b8bc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] e7466abcfc3e6579a1f0c76e15c61209749eee29e07e4e279f55b748b856bf3d
[INFO] running `"docker" "start" "-a" "e7466abcfc3e6579a1f0c76e15c61209749eee29e07e4e279f55b748b856bf3d"`
[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 0.69s
[INFO] running `"docker" "inspect" "e7466abcfc3e6579a1f0c76e15c61209749eee29e07e4e279f55b748b856bf3d"`
[INFO] running `"docker" "rm" "-f" "e7466abcfc3e6579a1f0c76e15c61209749eee29e07e4e279f55b748b856bf3d"`
[INFO] [stdout] e7466abcfc3e6579a1f0c76e15c61209749eee29e07e4e279f55b748b856bf3d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] f96a249f1ba6e55f5f03f3fe27027928e56a415bcf210d7edc56c1836f910fb6
[INFO] running `"docker" "start" "-a" "f96a249f1ba6e55f5f03f3fe27027928e56a415bcf210d7edc56c1836f910fb6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hound-72aaee3e3f86b181
[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" "f96a249f1ba6e55f5f03f3fe27027928e56a415bcf210d7edc56c1836f910fb6"`
[INFO] running `"docker" "rm" "-f" "f96a249f1ba6e55f5f03f3fe27027928e56a415bcf210d7edc56c1836f910fb6"`
[INFO] [stdout] f96a249f1ba6e55f5f03f3fe27027928e56a415bcf210d7edc56c1836f910fb6