[INFO] cloning repository vitelabs/pow-gpu
[INFO] running `"git" "clone" "--bare" "git://github.com/vitelabs/pow-gpu.git" "work/cache/sources/gh/vitelabs/pow-gpu"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/vitelabs/pow-gpu'...
[INFO] running `"git" "clone" "work/cache/sources/gh/vitelabs/pow-gpu" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/vitelabs/pow-gpu"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/vitelabs/pow-gpu'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/vitelabs/pow-gpu" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/vitelabs/pow-gpu"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/vitelabs/pow-gpu'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6c8e872111e715adb30ea99a71738cd5931284ac
[INFO] sha for GitHub repo vitelabs/pow-gpu: 6c8e872111e715adb30ea99a71738cd5931284ac
[INFO] validating manifest of vitelabs/pow-gpu on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of vitelabs/pow-gpu on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing vitelabs/pow-gpu
[INFO] finished frobbing vitelabs/pow-gpu
[INFO] frobbed toml for vitelabs/pow-gpu written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/vitelabs/pow-gpu/Cargo.toml
[INFO] started frobbing vitelabs/pow-gpu
[INFO] finished frobbing vitelabs/pow-gpu
[INFO] frobbed toml for vitelabs/pow-gpu written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/vitelabs/pow-gpu/Cargo.toml
[INFO] crate vitelabs/pow-gpu has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ocl v0.18.0
[INFO] [stderr]   Downloaded ocl-core v0.9.0
[INFO] [stderr]   Downloaded blake2 v0.7.1
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking vitelabs/pow-gpu against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-6/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/vitelabs/pow-gpu:/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=forbid" "-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" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c8a736976db6763502ac3eee90cd251b5e6771df75c6d87219846f8a3fd2165e
[INFO] running `"docker" "start" "-a" "c8a736976db6763502ac3eee90cd251b5e6771df75c6d87219846f8a3fd2165e"`
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]     Checking constant_time_eq v0.1.3
[INFO] [stderr]     Checking serde v1.0.45
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]     Checking qutex v0.2.1
[INFO] [stderr]    Compiling ocl-core v0.9.0
[INFO] [stderr]     Checking cl-sys v0.4.1
[INFO] [stderr]     Checking tokio-io v0.1.6
[INFO] [stderr]     Checking backtrace v0.3.7
[INFO] [stderr]     Checking crypto-mac v0.5.2
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking blake2 v0.7.1
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking tokio-reactor v0.1.1
[INFO] [stderr]     Checking tokio-fs v0.1.0
[INFO] [stderr]     Checking tokio-udp v0.1.0
[INFO] [stderr]     Checking tokio-tcp v0.1.0
[INFO] [stderr]     Checking num-integer v0.1.36
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking tokio v0.1.6
[INFO] [stderr]     Checking num-bigint v0.1.43
[INFO] [stderr]     Checking num-iter v0.1.35
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking ocl-core-vector v0.1.0
[INFO] [stderr]     Checking hyper v0.11.25
[INFO] [stderr]     Checking serde_json v1.0.17
[INFO] [stderr]     Checking ocl v0.18.0
[INFO] [stderr]     Checking dpow-work-server v0.1.7 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `ocl::prm::Ulong`
[INFO] [stderr]  --> src/gpu.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use ocl::prm::Ulong;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ocl::prm::Ulong`
[INFO] [stderr]  --> src/gpu.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use ocl::prm::Ulong;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `root`
[INFO] [stderr]   --> src/main.rs:58:15
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn work_valid(root: [u8; 32], work: [u8; 8], threshold:  [u8; 32]) -> bool {
[INFO] [stderr]    |               ^^^^ help: consider prefixing with an underscore: `_root`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `work`
[INFO] [stderr]   --> src/main.rs:58:31
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn work_valid(root: [u8; 32], work: [u8; 8], threshold:  [u8; 32]) -> bool {
[INFO] [stderr]    |                               ^^^^ help: consider prefixing with an underscore: `_work`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `threshold`
[INFO] [stderr]   --> src/main.rs:58:46
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn work_valid(root: [u8; 32], work: [u8; 8], threshold:  [u8; 32]) -> bool {
[INFO] [stderr]    |                                              ^^^^^^^^^ help: consider prefixing with an underscore: `_threshold`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `work_value`
[INFO] [stderr]   --> src/main.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | fn work_value(root: [u8; 32], work: [u8; 8]) -> u64 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_work_json`
[INFO] [stderr]    --> src/main.rs:155:7
[INFO] [stderr]     |
[INFO] [stderr] 155 |       fn parse_work_json(json: &Value) -> Result<[u8; 8], Value> {
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `root`
[INFO] [stderr]   --> src/main.rs:58:15
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn work_valid(root: [u8; 32], work: [u8; 8], threshold:  [u8; 32]) -> bool {
[INFO] [stderr]    |               ^^^^ help: consider prefixing with an underscore: `_root`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `work`
[INFO] [stderr]   --> src/main.rs:58:31
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn work_valid(root: [u8; 32], work: [u8; 8], threshold:  [u8; 32]) -> bool {
[INFO] [stderr]    |                               ^^^^ help: consider prefixing with an underscore: `_work`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `threshold`
[INFO] [stderr]   --> src/main.rs:58:46
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn work_valid(root: [u8; 32], work: [u8; 8], threshold:  [u8; 32]) -> bool {
[INFO] [stderr]    |                                              ^^^^^^^^^ help: consider prefixing with an underscore: `_threshold`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `work_value`
[INFO] [stderr]   --> src/main.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | fn work_value(root: [u8; 32], work: [u8; 8]) -> u64 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_work_json`
[INFO] [stderr]    --> src/main.rs:155:7
[INFO] [stderr]     |
[INFO] [stderr] 155 |       fn parse_work_json(json: &Value) -> Result<[u8; 8], Value> {
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.90s
[INFO] running `"docker" "inspect" "c8a736976db6763502ac3eee90cd251b5e6771df75c6d87219846f8a3fd2165e"`
[INFO] running `"docker" "rm" "-f" "c8a736976db6763502ac3eee90cd251b5e6771df75c6d87219846f8a3fd2165e"`
[INFO] [stdout] c8a736976db6763502ac3eee90cd251b5e6771df75c6d87219846f8a3fd2165e