[INFO] cloning repository nanocurrency/nano-work-server
[INFO] running `"git" "clone" "--bare" "git://github.com/nanocurrency/nano-work-server.git" "work/cache/sources/gh/nanocurrency/nano-work-server"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/nanocurrency/nano-work-server'...
[INFO] running `"git" "clone" "work/cache/sources/gh/nanocurrency/nano-work-server" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/nanocurrency/nano-work-server"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/nanocurrency/nano-work-server'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nanocurrency/nano-work-server" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/nanocurrency/nano-work-server"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/nanocurrency/nano-work-server'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f3c55a85cebaf9734027f176c7ef82823c83f321
[INFO] sha for GitHub repo nanocurrency/nano-work-server: f3c55a85cebaf9734027f176c7ef82823c83f321
[INFO] validating manifest of nanocurrency/nano-work-server on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of nanocurrency/nano-work-server on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing nanocurrency/nano-work-server
[INFO] finished frobbing nanocurrency/nano-work-server
[INFO] frobbed toml for nanocurrency/nano-work-server written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/nanocurrency/nano-work-server/Cargo.toml
[INFO] started frobbing nanocurrency/nano-work-server
[INFO] finished frobbing nanocurrency/nano-work-server
[INFO] frobbed toml for nanocurrency/nano-work-server written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/nanocurrency/nano-work-server/Cargo.toml
[INFO] crate nanocurrency/nano-work-server already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking nanocurrency/nano-work-server against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-3/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/nanocurrency/nano-work-server:/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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6a9ff999776fd380075b7f7e5d2187a0c91fddf287800f60d8ecb1cf5061f955
[INFO] running `"docker" "start" "-a" "6a9ff999776fd380075b7f7e5d2187a0c91fddf287800f60d8ecb1cf5061f955"`
[INFO] [stderr]    Compiling cl-sys v0.4.2
[INFO] [stderr]    Compiling serde v1.0.88
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling unicase v2.2.0
[INFO] [stderr]     Checking tokio-sync v0.1.2
[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 want v0.0.4
[INFO] [stderr]    Compiling ocl-core v0.9.0
[INFO] [stderr]     Checking rand_os v0.1.2
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking tokio-executor v0.1.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking bytes v0.4.11
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking tokio-timer v0.2.10
[INFO] [stderr]     Checking tokio-current-thread v0.1.4
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking parking_lot v0.5.5
[INFO] [stderr]     Checking blake2 v0.7.1
[INFO] [stderr]     Checking tokio-io v0.1.11
[INFO] [stderr]     Checking mime v0.3.13
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking ocl-core-vector v0.1.0
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking crossbeam v0.6.0
[INFO] [stderr]     Checking tokio-reactor v0.1.8
[INFO] [stderr]     Checking tokio-threadpool v0.1.11
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-fs v0.1.5
[INFO] [stderr]     Checking tokio v0.1.15
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking hyper v0.11.27
[INFO] [stderr]     Checking serde_json v1.0.38
[INFO] [stderr]     Checking ocl v0.18.0
[INFO] [stderr] warning[E0502]: cannot borrow `self.cmd.buffer.obj_core` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/ocl-0.18.0/src/standard/buffer.rs:1609:13
[INFO] [stderr]      |
[INFO] [stderr] 1606 |         let (offset, len, queue, flags, ewait, enew, /*is_mapped*/) = self.enq_details()?;
[INFO] [stderr]      |                                                                       ---- mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 1609 |             &self.cmd.buffer.obj_core, true, flags, offset, len, ewait, enew)?;
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^ immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 1614 |             queue.clone()))
[INFO] [stderr]      |             ----- mutable borrow later used here
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]      = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]      = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr] warning[E0502]: cannot borrow `self.cmd.buffer.obj_core` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/ocl-0.18.0/src/standard/buffer.rs:1613:57
[INFO] [stderr]      |
[INFO] [stderr] 1606 |         let (offset, len, queue, flags, ewait, enew, /*is_mapped*/) = self.enq_details()?;
[INFO] [stderr]      |                                                                       ---- mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 1613 |         Ok(MemMap::new(mm_core, len, None, unmap_event, self.cmd.buffer.obj_core.clone(),
[INFO] [stderr]      |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^ immutable borrow occurs here
[INFO] [stderr] 1614 |             queue.clone()))
[INFO] [stderr]      |             ----- mutable borrow later used here
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]      = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]      = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr] warning[E0502]: cannot borrow `self.cmd.buffer.obj_core` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/ocl-0.18.0/src/standard/buffer.rs:1635:13
[INFO] [stderr]      |
[INFO] [stderr] 1630 |         let (offset, len, queue, flags, ewait, enew, /*is_mapped*/) = self.enq_details()?;
[INFO] [stderr]      |                                                                       ---- mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 1635 |             &self.cmd.buffer.obj_core, false, flags, offset, len, ewait,
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^ immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 1646 |             self.cmd.buffer.obj_core.clone(), queue.clone(), /*is_mapped*/))
[INFO] [stderr]      |                                               ----- mutable borrow later used here
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]      = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]      = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr] warning[E0502]: cannot borrow `self.cmd.buffer.obj_core` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/ocl-0.18.0/src/standard/buffer.rs:1646:13
[INFO] [stderr]      |
[INFO] [stderr] 1630 |         let (offset, len, queue, flags, ewait, enew, /*is_mapped*/) = self.enq_details()?;
[INFO] [stderr]      |                                                                       ---- mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 1646 |             self.cmd.buffer.obj_core.clone(), queue.clone(), /*is_mapped*/))
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^          ----- mutable borrow later used here
[INFO] [stderr]      |             |
[INFO] [stderr]      |             immutable borrow occurs here
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]      = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]      = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]     Checking nano-work-server v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:112:69
[INFO] [stderr]     |
[INFO] [stderr] 112 |     fn generate_work(&self, root: [u8; 32], difficulty: u64) -> Box<Future<Item = [u8; 8], Error = WorkError>> {
[INFO] [stderr]     |                                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = [u8; 8], Error = WorkError>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:250:14
[INFO] [stderr]     |
[INFO] [stderr] 250 |     ) -> Box<Future<Item = (StatusCode, Value), Error = hyper::Error>> {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = (StatusCode, Value), Error = hyper::Error>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:321:23
[INFO] [stderr]     |
[INFO] [stderr] 321 |     type Future = Box<Future<Item = Self::Response, Error = Self::Error>>;
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = Self::Response, Error = Self::Error>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:112:69
[INFO] [stderr]     |
[INFO] [stderr] 112 |     fn generate_work(&self, root: [u8; 32], difficulty: u64) -> Box<Future<Item = [u8; 8], Error = WorkError>> {
[INFO] [stderr]     |                                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = [u8; 8], Error = WorkError>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:250:14
[INFO] [stderr]     |
[INFO] [stderr] 250 |     ) -> Box<Future<Item = (StatusCode, Value), Error = hyper::Error>> {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = (StatusCode, Value), Error = hyper::Error>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:321:23
[INFO] [stderr]     |
[INFO] [stderr] 321 |     type Future = Box<Future<Item = Self::Response, Error = Self::Error>>;
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = Self::Response, Error = Self::Error>`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.54s
[INFO] running `"docker" "inspect" "6a9ff999776fd380075b7f7e5d2187a0c91fddf287800f60d8ecb1cf5061f955"`
[INFO] running `"docker" "rm" "-f" "6a9ff999776fd380075b7f7e5d2187a0c91fddf287800f60d8ecb1cf5061f955"`
[INFO] [stdout] 6a9ff999776fd380075b7f7e5d2187a0c91fddf287800f60d8ecb1cf5061f955