[INFO] updating cached repository dat2/rust-raft
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dat2/rust-raft
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dat2/rust-raft" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/dat2/rust-raft"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/dat2/rust-raft'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dat2/rust-raft" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/dat2/rust-raft"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/dat2/rust-raft'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8881ddba811664ddb4f67e143b876fc7f06a5c9d
[INFO] sha for GitHub repo dat2/rust-raft: 8881ddba811664ddb4f67e143b876fc7f06a5c9d
[INFO] validating manifest of dat2/rust-raft on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dat2/rust-raft on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dat2/rust-raft
[INFO] finished frobbing dat2/rust-raft
[INFO] frobbed toml for dat2/rust-raft written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/dat2/rust-raft/Cargo.toml
[INFO] started frobbing dat2/rust-raft
[INFO] finished frobbing dat2/rust-raft
[INFO] frobbed toml for dat2/rust-raft written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/dat2/rust-raft/Cargo.toml
[INFO] crate dat2/rust-raft already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking dat2/rust-raft against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-3/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/dat2/rust-raft:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0fc66da8506ecd35cd574ed3a6fc517776515d44bcaaac52a63b67bea5dd608b
[INFO] running `"docker" "start" "-a" "0fc66da8506ecd35cd574ed3a6fc517776515d44bcaaac52a63b67bea5dd608b"`
[INFO] [stderr]     Checking futures v0.1.13
[INFO] [stderr]     Checking serde v1.0.4
[INFO] [stderr]     Checking vec_map v0.6.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.10
[INFO] [stderr]     Checking iovec v0.1.0
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking thread-id v3.0.0
[INFO] [stderr]     Checking term_size v0.2.3
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking net2 v0.2.29
[INFO] [stderr]     Checking aho-corasick v0.6.2
[INFO] [stderr]     Checking bytes v0.4.3
[INFO] [stderr]     Checking thread_local v0.3.3
[INFO] [stderr]     Checking clap v2.20.5
[INFO] [stderr]     Checking mio v0.6.7
[INFO] [stderr]    Compiling serde_derive v1.0.4
[INFO] [stderr]     Checking regex v0.2.1
[INFO] [stderr]     Checking tokio-io v0.1.1
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking env_logger v0.4.1
[INFO] [stderr]     Checking tokio-core v0.1.7
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking bincode v0.8.0
[INFO] [stderr]     Checking backtrace v0.3.0
[INFO] [stderr]     Checking error-chain v0.7.2
[INFO] [stderr]     Checking raft v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::str`
[INFO] [stderr]  --> src/server.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::str;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `UnboundedReceiver`
[INFO] [stderr]   --> src/server.rs:13:55
[INFO] [stderr]    |
[INFO] [stderr] 13 | use futures::sync::mpsc::{unbounded, UnboundedSender, UnboundedReceiver};
[INFO] [stderr]    |                                                       ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str`
[INFO] [stderr]  --> src/client.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::str;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str`
[INFO] [stderr]  --> src/server.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::str;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `UnboundedReceiver`
[INFO] [stderr]   --> src/server.rs:13:55
[INFO] [stderr]    |
[INFO] [stderr] 13 | use futures::sync::mpsc::{unbounded, UnboundedSender, UnboundedReceiver};
[INFO] [stderr]    |                                                       ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str`
[INFO] [stderr]  --> src/client.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::str;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/errors.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / error_chain! {
[INFO] [stderr] 2  | |
[INFO] [stderr] 3  | |   types {
[INFO] [stderr] 4  | |     Error, ErrorKind, ResultExt, Result;
[INFO] [stderr] ...  |
[INFO] [stderr] 12 | |   }
[INFO] [stderr] 13 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning 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: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/errors.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / error_chain! {
[INFO] [stderr] 2  | |
[INFO] [stderr] 3  | |   types {
[INFO] [stderr] 4  | |     Error, ErrorKind, ResultExt, Result;
[INFO] [stderr] ...  |
[INFO] [stderr] 12 | |   }
[INFO] [stderr] 13 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning 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: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/errors.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / error_chain! {
[INFO] [stderr] 2  | |
[INFO] [stderr] 3  | |   types {
[INFO] [stderr] 4  | |     Error, ErrorKind, ResultExt, Result;
[INFO] [stderr] ...  |
[INFO] [stderr] 12 | |   }
[INFO] [stderr] 13 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning 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: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/errors.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / error_chain! {
[INFO] [stderr] 2  | |
[INFO] [stderr] 3  | |   types {
[INFO] [stderr] 4  | |     Error, ErrorKind, ResultExt, Result;
[INFO] [stderr] ...  |
[INFO] [stderr] 12 | |   }
[INFO] [stderr] 13 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning 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: method is never used: `new`
[INFO] [stderr]  --> src/state.rs:7:3
[INFO] [stderr]   |
[INFO] [stderr] 7 |   pub fn new() -> RaftState {
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `vote`
[INFO] [stderr]   --> src/state.rs:11:3
[INFO] [stderr]    |
[INFO] [stderr] 11 |   pub fn vote(&mut self, candidate: String) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Follower`
[INFO] [stderr]   --> src/state.rs:20:3
[INFO] [stderr]    |
[INFO] [stderr] 20 |   Follower(StateMachine<Follower>),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Candidate`
[INFO] [stderr]   --> src/state.rs:21:3
[INFO] [stderr]    |
[INFO] [stderr] 21 |   Candidate(StateMachine<Candidate>),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Leader`
[INFO] [stderr]   --> src/state.rs:22:3
[INFO] [stderr]    |
[INFO] [stderr] 22 |   Leader(StateMachine<Leader>)
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `init`
[INFO] [stderr]   --> src/state.rs:42:3
[INFO] [stderr]    |
[INFO] [stderr] 42 |   pub fn init() -> StateMachine<Follower> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `vote`
[INFO] [stderr]   --> src/state.rs:47:3
[INFO] [stderr]    |
[INFO] [stderr] 47 |   pub fn vote(self, candidate: String) -> StateMachine<Follower> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `complete_vote`
[INFO] [stderr]   --> src/state.rs:52:3
[INFO] [stderr]    |
[INFO] [stderr] 52 |   pub fn complete_vote(self) -> StateMachine<Follower> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `election_timeout`
[INFO] [stderr]   --> src/state.rs:57:3
[INFO] [stderr]    |
[INFO] [stderr] 57 |   pub fn election_timeout(self) -> StateMachine<Candidate> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `failed_majority_timeout`
[INFO] [stderr]   --> src/state.rs:64:3
[INFO] [stderr]    |
[INFO] [stderr] 64 |   pub fn failed_majority_timeout(self) -> StateMachine<Candidate> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `other_leader_elected`
[INFO] [stderr]   --> src/state.rs:69:3
[INFO] [stderr]    |
[INFO] [stderr] 69 |   pub fn other_leader_elected(self) -> StateMachine<Follower> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `elected`
[INFO] [stderr]   --> src/state.rs:74:3
[INFO] [stderr]    |
[INFO] [stderr] 74 |   pub fn elected(self) -> StateMachine<Leader> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/server.rs:107:7
[INFO] [stderr]     |
[INFO] [stderr] 107 |       v.send(rng.gen());
[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] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/state.rs:7:3
[INFO] [stderr]   |
[INFO] [stderr] 7 |   pub fn new() -> RaftState {
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `vote`
[INFO] [stderr]   --> src/state.rs:11:3
[INFO] [stderr]    |
[INFO] [stderr] 11 |   pub fn vote(&mut self, candidate: String) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Follower`
[INFO] [stderr]   --> src/state.rs:20:3
[INFO] [stderr]    |
[INFO] [stderr] 20 |   Follower(StateMachine<Follower>),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Candidate`
[INFO] [stderr]   --> src/state.rs:21:3
[INFO] [stderr]    |
[INFO] [stderr] 21 |   Candidate(StateMachine<Candidate>),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Leader`
[INFO] [stderr]   --> src/state.rs:22:3
[INFO] [stderr]    |
[INFO] [stderr] 22 |   Leader(StateMachine<Leader>)
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `init`
[INFO] [stderr]   --> src/state.rs:42:3
[INFO] [stderr]    |
[INFO] [stderr] 42 |   pub fn init() -> StateMachine<Follower> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `vote`
[INFO] [stderr]   --> src/state.rs:47:3
[INFO] [stderr]    |
[INFO] [stderr] 47 |   pub fn vote(self, candidate: String) -> StateMachine<Follower> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `complete_vote`
[INFO] [stderr]   --> src/state.rs:52:3
[INFO] [stderr]    |
[INFO] [stderr] 52 |   pub fn complete_vote(self) -> StateMachine<Follower> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `election_timeout`
[INFO] [stderr]   --> src/state.rs:57:3
[INFO] [stderr]    |
[INFO] [stderr] 57 |   pub fn election_timeout(self) -> StateMachine<Candidate> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `failed_majority_timeout`
[INFO] [stderr]   --> src/state.rs:64:3
[INFO] [stderr]    |
[INFO] [stderr] 64 |   pub fn failed_majority_timeout(self) -> StateMachine<Candidate> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `other_leader_elected`
[INFO] [stderr]   --> src/state.rs:69:3
[INFO] [stderr]    |
[INFO] [stderr] 69 |   pub fn other_leader_elected(self) -> StateMachine<Follower> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `elected`
[INFO] [stderr]   --> src/state.rs:74:3
[INFO] [stderr]    |
[INFO] [stderr] 74 |   pub fn elected(self) -> StateMachine<Leader> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/server.rs:107:7
[INFO] [stderr]     |
[INFO] [stderr] 107 |       v.send(rng.gen());
[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] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.73s
[INFO] running `"docker" "inspect" "0fc66da8506ecd35cd574ed3a6fc517776515d44bcaaac52a63b67bea5dd608b"`
[INFO] running `"docker" "rm" "-f" "0fc66da8506ecd35cd574ed3a6fc517776515d44bcaaac52a63b67bea5dd608b"`
[INFO] [stdout] 0fc66da8506ecd35cd574ed3a6fc517776515d44bcaaac52a63b67bea5dd608b