[INFO] updating cached repository OpenSTFoundation/rust-mosaic
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/OpenSTFoundation/rust-mosaic
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/OpenSTFoundation/rust-mosaic" "work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/gh/OpenSTFoundation/rust-mosaic"`
[INFO] [stderr] Cloning into 'work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/gh/OpenSTFoundation/rust-mosaic'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/OpenSTFoundation/rust-mosaic" "work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/gh/OpenSTFoundation/rust-mosaic"`
[INFO] [stderr] Cloning into 'work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/gh/OpenSTFoundation/rust-mosaic'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6674cf0f4aec791ff0cd3ced00a22f295ddbe0c3
[INFO] sha for GitHub repo OpenSTFoundation/rust-mosaic: 6674cf0f4aec791ff0cd3ced00a22f295ddbe0c3
[INFO] validating manifest of OpenSTFoundation/rust-mosaic on toolchain master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of OpenSTFoundation/rust-mosaic on toolchain try#bad365140e1e8233b42b21af70a407f14ce5fec5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing OpenSTFoundation/rust-mosaic
[INFO] finished frobbing OpenSTFoundation/rust-mosaic
[INFO] frobbed toml for OpenSTFoundation/rust-mosaic written to work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/gh/OpenSTFoundation/rust-mosaic/Cargo.toml
[INFO] started frobbing OpenSTFoundation/rust-mosaic
[INFO] finished frobbing OpenSTFoundation/rust-mosaic
[INFO] frobbed toml for OpenSTFoundation/rust-mosaic written to work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/gh/OpenSTFoundation/rust-mosaic/Cargo.toml
[INFO] crate OpenSTFoundation/rust-mosaic has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking OpenSTFoundation/rust-mosaic against master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980 for pr-56896
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56896/worker-7/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/gh/OpenSTFoundation/rust-mosaic:/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" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e593f53c0eb5684d8498a7e4cc17310cf4ae489e9b0116cce45d9087196b3f16
[INFO] running `"docker" "start" "-a" "e593f53c0eb5684d8498a7e4cc17310cf4ae489e9b0116cce45d9087196b3f16"`
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]     Checking rustc-hex v2.0.1
[INFO] [stderr]     Checking tokio-timer v0.1.2
[INFO] [stderr]     Checking simple_logger v0.5.0
[INFO] [stderr]     Checking ethereum-types-serialize v0.2.1
[INFO] [stderr]     Checking hyper v0.10.15
[INFO] [stderr]     Checking jsonrpc-core v8.0.1
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking tokio-uds v0.1.7
[INFO] [stderr]     Checking tiny-keccak v1.4.2
[INFO] [stderr]     Checking fixed-hash v0.2.5
[INFO] [stderr]     Checking uint v0.4.1
[INFO] [stderr]     Checking ethbloom v0.5.0
[INFO] [stderr]     Checking ethereum-types v0.4.0
[INFO] [stderr]     Checking hyper v0.11.27
[INFO] [stderr]     Checking websocket v0.20.4
[INFO] [stderr]     Checking ethabi v6.1.0
[INFO] [stderr]     Checking rlp v0.3.0
[INFO] [stderr]     Checking hyper-tls v0.1.4
[INFO] [stderr]     Checking web3 v0.4.0
[INFO] [stderr]     Checking mosaic v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: type alias is never used: `Signature`
[INFO] [stderr]   --> src/ethereum/types/mod.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub type Signature = H520;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_accounts`
[INFO] [stderr]    --> src/ethereum/mod.rs:165:5
[INFO] [stderr]     |
[INFO] [stderr] 165 |     pub fn get_accounts(&self) -> impl Future<Item = Vec<Address>, Error = Error> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `sign`
[INFO] [stderr]    --> src/ethereum/mod.rs:184:5
[INFO] [stderr]     |
[INFO] [stderr] 184 |     pub fn sign(&self, data: Bytes) -> impl Future<Item = Signature, Error = Error> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/ethereum/types/block.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         write!(fmt, "Block ({:x})", self.hash);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Signature`
[INFO] [stderr]   --> src/ethereum/types/mod.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub type Signature = H520;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_accounts`
[INFO] [stderr]    --> src/ethereum/mod.rs:165:5
[INFO] [stderr]     |
[INFO] [stderr] 165 |     pub fn get_accounts(&self) -> impl Future<Item = Vec<Address>, Error = Error> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `sign`
[INFO] [stderr]    --> src/ethereum/mod.rs:184:5
[INFO] [stderr]     |
[INFO] [stderr] 184 |     pub fn sign(&self, data: Bytes) -> impl Future<Item = Signature, Error = Error> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/ethereum/types/block.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         write!(fmt, "Block ({:x})", self.hash);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.95s
[INFO] running `"docker" "inspect" "e593f53c0eb5684d8498a7e4cc17310cf4ae489e9b0116cce45d9087196b3f16"`
[INFO] running `"docker" "rm" "-f" "e593f53c0eb5684d8498a7e4cc17310cf4ae489e9b0116cce45d9087196b3f16"`
[INFO] [stdout] e593f53c0eb5684d8498a7e4cc17310cf4ae489e9b0116cce45d9087196b3f16