Dec 19 22:30:15.265 INFO checking OpenSTFoundation/rust-mosaic against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 22:30:15.265 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 22:30:15.858 INFO [stdout] 7bab28e735cf5836a3d02363de6fdc9b865f7b5edf62252497d047e3362a64e6
Dec 19 22:30:15.860 INFO running `"docker" "start" "-a" "7bab28e735cf5836a3d02363de6fdc9b865f7b5edf62252497d047e3362a64e6"`
Dec 19 22:30:18.749 INFO [stderr]     Checking rustc-hex v2.0.1
Dec 19 22:30:18.794 INFO [stderr]     Checking rpassword v2.0.0
Dec 19 22:30:18.796 INFO [stderr]     Checking simple_logger v0.5.0
Dec 19 22:30:18.822 INFO [stderr]     Checking ethereum-types-serialize v0.2.1
Dec 19 22:30:18.829 INFO [stderr]     Checking crossbeam-epoch v0.5.2
Dec 19 22:30:18.845 INFO [stderr]     Checking openssl v0.9.24
Dec 19 22:30:18.856 INFO [stderr]     Checking hyper v0.10.15
Dec 19 22:30:18.873 INFO [stderr]     Checking jsonrpc-core v8.0.1
Dec 19 22:30:22.122 INFO [stderr]     Checking fixed-hash v0.2.5
Dec 19 22:30:22.702 INFO [stderr]     Checking uint v0.4.1
Dec 19 22:30:24.822 INFO [stderr]     Checking ethbloom v0.5.0
Dec 19 22:30:27.198 INFO [stderr]     Checking crossbeam-deque v0.6.1
Dec 19 22:30:32.130 INFO [stderr]     Checking tokio-threadpool v0.1.8
Dec 19 22:30:36.840 INFO [stderr]     Checking ethereum-types v0.4.0
Dec 19 22:30:38.222 INFO [stderr]     Checking tokio-fs v0.1.4
Dec 19 22:30:40.832 INFO [stderr]     Checking tokio v0.1.11
Dec 19 22:30:44.460 INFO [stderr]     Checking native-tls v0.1.5
Dec 19 22:30:47.568 INFO [stderr]     Checking tokio-core v0.1.17
Dec 19 22:30:50.815 INFO [stderr]     Checking ethabi v6.1.0
Dec 19 22:30:50.816 INFO [stderr]     Checking rlp v0.3.0
Dec 19 22:30:54.589 INFO [stderr]     Checking tokio-proto v0.1.1
Dec 19 22:30:54.589 INFO [stderr]     Checking tokio-tls v0.1.4
Dec 19 22:30:54.589 INFO [stderr]     Checking tokio-uds v0.1.7
Dec 19 22:31:01.358 INFO [stderr]     Checking websocket v0.20.4
Dec 19 22:31:07.693 INFO [stderr]     Checking hyper v0.11.27
Dec 19 22:31:17.870 INFO [stderr]     Checking hyper-tls v0.1.4
Dec 19 22:31:19.348 INFO [stderr]     Checking web3 v0.4.0
Dec 19 22:31:28.827 INFO [stderr]     Checking mosaic v0.1.0 (/opt/crater/workdir)
Dec 19 22:31:33.893 INFO [stderr] warning: type alias is never used: `Signature`
Dec 19 22:31:33.893 INFO [stderr]   --> src/ethereum/types/mod.rs:24:1
Dec 19 22:31:33.893 INFO [stderr]    |
Dec 19 22:31:33.893 INFO [stderr] 24 | pub type Signature = H520;
Dec 19 22:31:33.893 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:31:33.893 INFO [stderr]    |
Dec 19 22:31:33.893 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 22:31:33.893 INFO [stderr] 
Dec 19 22:31:33.893 INFO [stderr] warning: method is never used: `get_accounts`
Dec 19 22:31:33.893 INFO [stderr]    --> src/ethereum/mod.rs:165:5
Dec 19 22:31:33.893 INFO [stderr]     |
Dec 19 22:31:33.893 INFO [stderr] 165 |     pub fn get_accounts(&self) -> impl Future<Item = Vec<Address>, Error = Error> {
Dec 19 22:31:33.893 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:31:33.893 INFO [stderr] 
Dec 19 22:31:33.893 INFO [stderr] warning: method is never used: `sign`
Dec 19 22:31:33.893 INFO [stderr]    --> src/ethereum/mod.rs:184:5
Dec 19 22:31:33.893 INFO [stderr]     |
Dec 19 22:31:33.893 INFO [stderr] 184 |     pub fn sign(&self, data: Bytes) -> impl Future<Item = Signature, Error = Error> {
Dec 19 22:31:33.893 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:31:33.893 INFO [stderr] 
Dec 19 22:31:33.895 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 22:31:33.895 INFO [stderr]   --> src/ethereum/types/block.rs:48:9
Dec 19 22:31:33.895 INFO [stderr]    |
Dec 19 22:31:33.895 INFO [stderr] 48 |         write!(fmt, "Block ({:x})", self.hash);
Dec 19 22:31:33.895 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:31:33.896 INFO [stderr]    |
Dec 19 22:31:33.896 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 22:31:33.896 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 22:31:33.896 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)
Dec 19 22:31:33.896 INFO [stderr] 
Dec 19 22:31:34.080 INFO [stderr] warning: type alias is never used: `Signature`
Dec 19 22:31:34.080 INFO [stderr]   --> src/ethereum/types/mod.rs:24:1
Dec 19 22:31:34.080 INFO [stderr]    |
Dec 19 22:31:34.080 INFO [stderr] 24 | pub type Signature = H520;
Dec 19 22:31:34.080 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:31:34.080 INFO [stderr]    |
Dec 19 22:31:34.080 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 22:31:34.080 INFO [stderr] 
Dec 19 22:31:34.080 INFO [stderr] warning: method is never used: `get_accounts`
Dec 19 22:31:34.080 INFO [stderr]    --> src/ethereum/mod.rs:165:5
Dec 19 22:31:34.081 INFO [stderr]     |
Dec 19 22:31:34.081 INFO [stderr] 165 |     pub fn get_accounts(&self) -> impl Future<Item = Vec<Address>, Error = Error> {
Dec 19 22:31:34.081 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:31:34.081 INFO [stderr] 
Dec 19 22:31:34.081 INFO [stderr] warning: method is never used: `sign`
Dec 19 22:31:34.081 INFO [stderr]    --> src/ethereum/mod.rs:184:5
Dec 19 22:31:34.081 INFO [stderr]     |
Dec 19 22:31:34.081 INFO [stderr] 184 |     pub fn sign(&self, data: Bytes) -> impl Future<Item = Signature, Error = Error> {
Dec 19 22:31:34.081 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:31:34.081 INFO [stderr] 
Dec 19 22:31:34.083 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 22:31:34.083 INFO [stderr]   --> src/ethereum/types/block.rs:48:9
Dec 19 22:31:34.083 INFO [stderr]    |
Dec 19 22:31:34.084 INFO [stderr] 48 |         write!(fmt, "Block ({:x})", self.hash);
Dec 19 22:31:34.084 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:31:34.084 INFO [stderr]    |
Dec 19 22:31:34.085 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 22:31:34.085 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 22:31:34.085 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)
Dec 19 22:31:34.086 INFO [stderr] 
Dec 19 22:31:39.587 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 21s
Dec 19 22:31:40.847 INFO running `"docker" "inspect" "7bab28e735cf5836a3d02363de6fdc9b865f7b5edf62252497d047e3362a64e6"`
Dec 19 22:31:41.136 INFO running `"docker" "rm" "-f" "7bab28e735cf5836a3d02363de6fdc9b865f7b5edf62252497d047e3362a64e6"`
Dec 19 22:31:41.432 INFO [stdout] 7bab28e735cf5836a3d02363de6fdc9b865f7b5edf62252497d047e3362a64e6