[INFO] updating cached repository vitelabs/pow-gpu
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/vitelabs/pow-gpu
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/vitelabs/pow-gpu" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/vitelabs/pow-gpu"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/vitelabs/pow-gpu'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/vitelabs/pow-gpu" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/vitelabs/pow-gpu"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/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#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of vitelabs/pow-gpu on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-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-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/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-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/vitelabs/pow-gpu/Cargo.toml
[INFO] crate vitelabs/pow-gpu already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking vitelabs/pow-gpu against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-7/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f56f05124eddac35ef772a8c591c024ce3632ddc8d056ab175bca26572cd7f26
[INFO] running `"docker" "start" "-a" "f56f05124eddac35ef772a8c591c024ce3632ddc8d056ab175bca26572cd7f26"`
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]    Compiling cl-sys v0.4.1
[INFO] [stderr]     Checking smallvec v0.6.1
[INFO] [stderr]     Checking serde v1.0.45
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking relay v0.1.1
[INFO] [stderr]     Checking qutex v0.2.1
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking num-bigint v0.1.43
[INFO] [stderr]    Compiling ocl-core v0.9.0
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking tokio-io v0.1.6
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]     Checking backtrace v0.3.7
[INFO] [stderr]     Checking mime v0.3.7
[INFO] [stderr]     Checking digest v0.7.2
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking parking_lot v0.5.5
[INFO] [stderr]     Checking crossbeam-epoch v0.4.1
[INFO] [stderr]     Checking blake2 v0.7.1
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking crossbeam-deque v0.3.1
[INFO] [stderr]     Checking tokio-reactor v0.1.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.3
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking ocl-core-vector v0.1.0
[INFO] [stderr]     Checking tokio-udp v0.1.0
[INFO] [stderr]     Checking tokio-tcp v0.1.0
[INFO] [stderr]     Checking tokio-fs v0.1.0
[INFO] [stderr]     Checking tokio v0.1.6
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking tokio-proto v0.1.1
[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: 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: 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 45.14s
[INFO] running `"docker" "inspect" "f56f05124eddac35ef772a8c591c024ce3632ddc8d056ab175bca26572cd7f26"`
[INFO] running `"docker" "rm" "-f" "f56f05124eddac35ef772a8c591c024ce3632ddc8d056ab175bca26572cd7f26"`
[INFO] [stdout] f56f05124eddac35ef772a8c591c024ce3632ddc8d056ab175bca26572cd7f26