Dec 01 20:12:30.084 INFO testing dat2/rust-raft against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 01 20:12:30.084 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-4/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 20:12:30.599 INFO [stdout] f3c9bce5f861f67d427d301b2864894fcaa44f129586f5a858446592cd34be7c
Dec 01 20:12:30.601 INFO running `"docker" "start" "-a" "f3c9bce5f861f67d427d301b2864894fcaa44f129586f5a858446592cd34be7c"`
Dec 01 20:12:32.187 INFO [stderr] usermod: no changes
Dec 01 20:12:32.440 INFO [stderr]    Compiling backtrace-sys v0.1.10
Dec 01 20:12:32.447 INFO [stderr]    Compiling iovec v0.1.0
Dec 01 20:12:32.483 INFO [stderr]    Compiling net2 v0.2.29
Dec 01 20:12:32.483 INFO [stderr]    Compiling aho-corasick v0.6.2
Dec 01 20:12:34.839 INFO [stderr]    Compiling bytes v0.4.3
Dec 01 20:12:37.423 INFO [stderr]    Compiling mio v0.6.7
Dec 01 20:12:37.579 INFO [stderr]    Compiling regex v0.2.1
Dec 01 20:12:40.887 INFO [stderr]    Compiling tokio-io v0.1.1
Dec 01 20:12:45.664 INFO [stderr]    Compiling tokio-core v0.1.7
Dec 01 20:12:54.855 INFO [stderr]    Compiling env_logger v0.4.1
Dec 01 20:12:57.321 INFO [stderr]    Compiling tokio-proto v0.1.1
Dec 01 20:13:02.823 INFO [stderr]    Compiling backtrace v0.3.0
Dec 01 20:13:04.351 INFO [stderr]    Compiling error-chain v0.7.2
Dec 01 20:13:05.715 INFO [stderr]    Compiling raft v0.1.0 (/source)
Dec 01 20:13:07.159 INFO [stderr] warning: unused import: `std::str`
Dec 01 20:13:07.159 INFO [stderr]  --> src/server.rs:4:5
Dec 01 20:13:07.159 INFO [stderr]   |
Dec 01 20:13:07.159 INFO [stderr] 4 | use std::str;
Dec 01 20:13:07.159 INFO [stderr]   |     ^^^^^^^^
Dec 01 20:13:07.159 INFO [stderr]   |
Dec 01 20:13:07.159 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 01 20:13:07.159 INFO [stderr] 
Dec 01 20:13:07.159 INFO [stderr] warning: unused import: `UnboundedReceiver`
Dec 01 20:13:07.159 INFO [stderr]   --> src/server.rs:13:55
Dec 01 20:13:07.159 INFO [stderr]    |
Dec 01 20:13:07.159 INFO [stderr] 13 | use futures::sync::mpsc::{unbounded, UnboundedSender, UnboundedReceiver};
Dec 01 20:13:07.159 INFO [stderr]    |                                                       ^^^^^^^^^^^^^^^^^
Dec 01 20:13:07.159 INFO [stderr] 
Dec 01 20:13:07.161 INFO [stderr] warning: unused import: `std::str`
Dec 01 20:13:07.161 INFO [stderr]  --> src/client.rs:4:5
Dec 01 20:13:07.161 INFO [stderr]   |
Dec 01 20:13:07.161 INFO [stderr] 4 | use std::str;
Dec 01 20:13:07.161 INFO [stderr]   |     ^^^^^^^^
Dec 01 20:13:07.161 INFO [stderr] 
Dec 01 20:13:07.583 INFO [stderr] warning: method is never used: `new`
Dec 01 20:13:07.583 INFO [stderr]  --> src/state.rs:7:3
Dec 01 20:13:07.583 INFO [stderr]   |
Dec 01 20:13:07.583 INFO [stderr] 7 |   pub fn new() -> RaftState {
Dec 01 20:13:07.583 INFO [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:07.583 INFO [stderr]   |
Dec 01 20:13:07.583 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 01 20:13:07.583 INFO [stderr] 
Dec 01 20:13:07.583 INFO [stderr] warning: method is never used: `vote`
Dec 01 20:13:07.583 INFO [stderr]   --> src/state.rs:11:3
Dec 01 20:13:07.583 INFO [stderr]    |
Dec 01 20:13:07.583 INFO [stderr] 11 |   pub fn vote(&mut self, candidate: String) {
Dec 01 20:13:07.583 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:07.583 INFO [stderr] 
Dec 01 20:13:07.583 INFO [stderr] warning: variant is never constructed: `Follower`
Dec 01 20:13:07.583 INFO [stderr]   --> src/state.rs:20:3
Dec 01 20:13:07.583 INFO [stderr]    |
Dec 01 20:13:07.583 INFO [stderr] 20 |   Follower(StateMachine<Follower>),
Dec 01 20:13:07.583 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:07.583 INFO [stderr] 
Dec 01 20:13:07.583 INFO [stderr] warning: variant is never constructed: `Candidate`
Dec 01 20:13:07.583 INFO [stderr]   --> src/state.rs:21:3
Dec 01 20:13:07.583 INFO [stderr]    |
Dec 01 20:13:07.583 INFO [stderr] 21 |   Candidate(StateMachine<Candidate>),
Dec 01 20:13:07.583 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:07.583 INFO [stderr] 
Dec 01 20:13:07.583 INFO [stderr] warning: variant is never constructed: `Leader`
Dec 01 20:13:07.584 INFO [stderr]   --> src/state.rs:22:3
Dec 01 20:13:07.584 INFO [stderr]    |
Dec 01 20:13:07.584 INFO [stderr] 22 |   Leader(StateMachine<Leader>)
Dec 01 20:13:07.584 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:07.584 INFO [stderr] 
Dec 01 20:13:07.584 INFO [stderr] warning: method is never used: `init`
Dec 01 20:13:07.584 INFO [stderr]   --> src/state.rs:42:3
Dec 01 20:13:07.584 INFO [stderr]    |
Dec 01 20:13:07.584 INFO [stderr] 42 |   pub fn init() -> StateMachine<Follower> {
Dec 01 20:13:07.584 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:07.584 INFO [stderr] 
Dec 01 20:13:07.584 INFO [stderr] warning: method is never used: `vote`
Dec 01 20:13:07.584 INFO [stderr]   --> src/state.rs:47:3
Dec 01 20:13:07.584 INFO [stderr]    |
Dec 01 20:13:07.584 INFO [stderr] 47 |   pub fn vote(self, candidate: String) -> StateMachine<Follower> {
Dec 01 20:13:07.584 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:07.584 INFO [stderr] 
Dec 01 20:13:07.584 INFO [stderr] warning: method is never used: `complete_vote`
Dec 01 20:13:07.584 INFO [stderr]   --> src/state.rs:52:3
Dec 01 20:13:07.584 INFO [stderr]    |
Dec 01 20:13:07.584 INFO [stderr] 52 |   pub fn complete_vote(self) -> StateMachine<Follower> {
Dec 01 20:13:07.584 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:07.584 INFO [stderr] 
Dec 01 20:13:07.584 INFO [stderr] warning: method is never used: `election_timeout`
Dec 01 20:13:07.584 INFO [stderr]   --> src/state.rs:57:3
Dec 01 20:13:07.584 INFO [stderr]    |
Dec 01 20:13:07.584 INFO [stderr] 57 |   pub fn election_timeout(self) -> StateMachine<Candidate> {
Dec 01 20:13:07.584 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:07.584 INFO [stderr] 
Dec 01 20:13:07.584 INFO [stderr] warning: method is never used: `failed_majority_timeout`
Dec 01 20:13:07.584 INFO [stderr]   --> src/state.rs:64:3
Dec 01 20:13:07.584 INFO [stderr]    |
Dec 01 20:13:07.584 INFO [stderr] 64 |   pub fn failed_majority_timeout(self) -> StateMachine<Candidate> {
Dec 01 20:13:07.584 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:07.584 INFO [stderr] 
Dec 01 20:13:07.584 INFO [stderr] warning: method is never used: `other_leader_elected`
Dec 01 20:13:07.584 INFO [stderr]   --> src/state.rs:69:3
Dec 01 20:13:07.584 INFO [stderr]    |
Dec 01 20:13:07.584 INFO [stderr] 69 |   pub fn other_leader_elected(self) -> StateMachine<Follower> {
Dec 01 20:13:07.584 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:07.584 INFO [stderr] 
Dec 01 20:13:07.584 INFO [stderr] warning: method is never used: `elected`
Dec 01 20:13:07.584 INFO [stderr]   --> src/state.rs:74:3
Dec 01 20:13:07.584 INFO [stderr]    |
Dec 01 20:13:07.584 INFO [stderr] 74 |   pub fn elected(self) -> StateMachine<Leader> {
Dec 01 20:13:07.584 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:07.584 INFO [stderr] 
Dec 01 20:13:07.584 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 01 20:13:07.584 INFO [stderr]    --> src/server.rs:107:7
Dec 01 20:13:07.584 INFO [stderr]     |
Dec 01 20:13:07.584 INFO [stderr] 107 |       v.send(rng.gen());
Dec 01 20:13:07.584 INFO [stderr]     |       ^^^^^^^^^^^^^^^^^^
Dec 01 20:13:07.584 INFO [stderr]     |
Dec 01 20:13:07.584 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 01 20:13:07.584 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 20:13:07.584 INFO [stderr] 
Dec 01 20:13:16.173 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.96s
Dec 01 20:13:16.187 INFO [stderr] su: No module specific data is present
Dec 01 20:13:16.792 INFO running `"docker" "inspect" "f3c9bce5f861f67d427d301b2864894fcaa44f129586f5a858446592cd34be7c"`
Dec 01 20:13:17.135 INFO running `"docker" "rm" "-f" "f3c9bce5f861f67d427d301b2864894fcaa44f129586f5a858446592cd34be7c"`
Dec 01 20:13:17.395 INFO [stdout] f3c9bce5f861f67d427d301b2864894fcaa44f129586f5a858446592cd34be7c
Dec 01 20:13:17.401 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-4/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 20:13:17.828 INFO [stdout] dc51cc9dc5a202a3d88903e40ce679299d7500a20750a0dedde5b36e2b1b5f78
Dec 01 20:13:17.836 INFO running `"docker" "start" "-a" "dc51cc9dc5a202a3d88903e40ce679299d7500a20750a0dedde5b36e2b1b5f78"`
Dec 01 20:13:18.878 INFO [stderr] usermod: no changes
Dec 01 20:13:19.043 INFO [stderr]    Compiling raft v0.1.0 (/source)
Dec 01 20:13:20.959 INFO [stderr] warning: unused import: `std::str`
Dec 01 20:13:20.959 INFO [stderr]  --> src/server.rs:4:5
Dec 01 20:13:20.959 INFO [stderr]   |
Dec 01 20:13:20.959 INFO [stderr] 4 | use std::str;
Dec 01 20:13:20.959 INFO [stderr]   |     ^^^^^^^^
Dec 01 20:13:20.959 INFO [stderr]   |
Dec 01 20:13:20.959 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 01 20:13:20.959 INFO [stderr] 
Dec 01 20:13:20.959 INFO [stderr] warning: unused import: `UnboundedReceiver`
Dec 01 20:13:20.959 INFO [stderr]   --> src/server.rs:13:55
Dec 01 20:13:20.959 INFO [stderr]    |
Dec 01 20:13:20.959 INFO [stderr] 13 | use futures::sync::mpsc::{unbounded, UnboundedSender, UnboundedReceiver};
Dec 01 20:13:20.959 INFO [stderr]    |                                                       ^^^^^^^^^^^^^^^^^
Dec 01 20:13:20.959 INFO [stderr] 
Dec 01 20:13:20.959 INFO [stderr] warning: unused import: `std::str`
Dec 01 20:13:20.959 INFO [stderr]  --> src/client.rs:4:5
Dec 01 20:13:20.959 INFO [stderr]   |
Dec 01 20:13:20.959 INFO [stderr] 4 | use std::str;
Dec 01 20:13:20.959 INFO [stderr]   |     ^^^^^^^^
Dec 01 20:13:20.959 INFO [stderr] 
Dec 01 20:13:21.355 INFO [stderr] warning: method is never used: `new`
Dec 01 20:13:21.355 INFO [stderr]  --> src/state.rs:7:3
Dec 01 20:13:21.355 INFO [stderr]   |
Dec 01 20:13:21.355 INFO [stderr] 7 |   pub fn new() -> RaftState {
Dec 01 20:13:21.355 INFO [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:21.355 INFO [stderr]   |
Dec 01 20:13:21.355 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 01 20:13:21.355 INFO [stderr] 
Dec 01 20:13:21.355 INFO [stderr] warning: method is never used: `vote`
Dec 01 20:13:21.355 INFO [stderr]   --> src/state.rs:11:3
Dec 01 20:13:21.355 INFO [stderr]    |
Dec 01 20:13:21.355 INFO [stderr] 11 |   pub fn vote(&mut self, candidate: String) {
Dec 01 20:13:21.355 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:21.355 INFO [stderr] 
Dec 01 20:13:21.355 INFO [stderr] warning: variant is never constructed: `Follower`
Dec 01 20:13:21.355 INFO [stderr]   --> src/state.rs:20:3
Dec 01 20:13:21.355 INFO [stderr]    |
Dec 01 20:13:21.355 INFO [stderr] 20 |   Follower(StateMachine<Follower>),
Dec 01 20:13:21.355 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:21.355 INFO [stderr] 
Dec 01 20:13:21.355 INFO [stderr] warning: variant is never constructed: `Candidate`
Dec 01 20:13:21.355 INFO [stderr]   --> src/state.rs:21:3
Dec 01 20:13:21.355 INFO [stderr]    |
Dec 01 20:13:21.355 INFO [stderr] 21 |   Candidate(StateMachine<Candidate>),
Dec 01 20:13:21.355 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:21.355 INFO [stderr] 
Dec 01 20:13:21.355 INFO [stderr] warning: variant is never constructed: `Leader`
Dec 01 20:13:21.355 INFO [stderr]   --> src/state.rs:22:3
Dec 01 20:13:21.355 INFO [stderr]    |
Dec 01 20:13:21.355 INFO [stderr] 22 |   Leader(StateMachine<Leader>)
Dec 01 20:13:21.355 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:21.355 INFO [stderr] 
Dec 01 20:13:21.359 INFO [stderr] warning: method is never used: `init`
Dec 01 20:13:21.359 INFO [stderr]   --> src/state.rs:42:3
Dec 01 20:13:21.359 INFO [stderr]    |
Dec 01 20:13:21.359 INFO [stderr] 42 |   pub fn init() -> StateMachine<Follower> {
Dec 01 20:13:21.359 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:21.359 INFO [stderr] 
Dec 01 20:13:21.359 INFO [stderr] warning: method is never used: `vote`
Dec 01 20:13:21.359 INFO [stderr]   --> src/state.rs:47:3
Dec 01 20:13:21.359 INFO [stderr]    |
Dec 01 20:13:21.359 INFO [stderr] 47 |   pub fn vote(self, candidate: String) -> StateMachine<Follower> {
Dec 01 20:13:21.359 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:21.359 INFO [stderr] 
Dec 01 20:13:21.359 INFO [stderr] warning: method is never used: `complete_vote`
Dec 01 20:13:21.359 INFO [stderr]   --> src/state.rs:52:3
Dec 01 20:13:21.359 INFO [stderr]    |
Dec 01 20:13:21.359 INFO [stderr] 52 |   pub fn complete_vote(self) -> StateMachine<Follower> {
Dec 01 20:13:21.359 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:21.359 INFO [stderr] 
Dec 01 20:13:21.359 INFO [stderr] warning: method is never used: `election_timeout`
Dec 01 20:13:21.359 INFO [stderr]   --> src/state.rs:57:3
Dec 01 20:13:21.359 INFO [stderr]    |
Dec 01 20:13:21.359 INFO [stderr] 57 |   pub fn election_timeout(self) -> StateMachine<Candidate> {
Dec 01 20:13:21.359 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:21.359 INFO [stderr] 
Dec 01 20:13:21.359 INFO [stderr] warning: method is never used: `failed_majority_timeout`
Dec 01 20:13:21.359 INFO [stderr]   --> src/state.rs:64:3
Dec 01 20:13:21.359 INFO [stderr]    |
Dec 01 20:13:21.359 INFO [stderr] 64 |   pub fn failed_majority_timeout(self) -> StateMachine<Candidate> {
Dec 01 20:13:21.359 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:21.359 INFO [stderr] 
Dec 01 20:13:21.359 INFO [stderr] warning: method is never used: `other_leader_elected`
Dec 01 20:13:21.359 INFO [stderr]   --> src/state.rs:69:3
Dec 01 20:13:21.359 INFO [stderr]    |
Dec 01 20:13:21.359 INFO [stderr] 69 |   pub fn other_leader_elected(self) -> StateMachine<Follower> {
Dec 01 20:13:21.359 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:21.359 INFO [stderr] 
Dec 01 20:13:21.359 INFO [stderr] warning: method is never used: `elected`
Dec 01 20:13:21.359 INFO [stderr]   --> src/state.rs:74:3
Dec 01 20:13:21.359 INFO [stderr]    |
Dec 01 20:13:21.359 INFO [stderr] 74 |   pub fn elected(self) -> StateMachine<Leader> {
Dec 01 20:13:21.359 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 20:13:21.359 INFO [stderr] 
Dec 01 20:13:21.359 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 01 20:13:21.359 INFO [stderr]    --> src/server.rs:107:7
Dec 01 20:13:21.359 INFO [stderr]     |
Dec 01 20:13:21.359 INFO [stderr] 107 |       v.send(rng.gen());
Dec 01 20:13:21.359 INFO [stderr]     |       ^^^^^^^^^^^^^^^^^^
Dec 01 20:13:21.359 INFO [stderr]     |
Dec 01 20:13:21.359 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 01 20:13:21.359 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 20:13:21.359 INFO [stderr] 
Dec 01 20:13:23.326 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.42s
Dec 01 20:13:23.335 INFO [stderr] su: No module specific data is present
Dec 01 20:13:23.955 INFO running `"docker" "inspect" "dc51cc9dc5a202a3d88903e40ce679299d7500a20750a0dedde5b36e2b1b5f78"`
Dec 01 20:13:24.153 INFO running `"docker" "rm" "-f" "dc51cc9dc5a202a3d88903e40ce679299d7500a20750a0dedde5b36e2b1b5f78"`
Dec 01 20:13:24.367 INFO [stdout] dc51cc9dc5a202a3d88903e40ce679299d7500a20750a0dedde5b36e2b1b5f78
Dec 01 20:13:24.369 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-4/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 20:13:24.740 INFO [stdout] 95e8d3766820f1dfacfdee666a4707b428c8b9c18cf082ad721af7f478d849e4
Dec 01 20:13:24.745 INFO running `"docker" "start" "-a" "95e8d3766820f1dfacfdee666a4707b428c8b9c18cf082ad721af7f478d849e4"`
Dec 01 20:13:25.783 INFO [stderr] usermod: no changes
Dec 01 20:13:25.983 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.18s
Dec 01 20:13:25.995 INFO [stderr]      Running /target/debug/deps/raft-e7ca0234e71f15f2
Dec 01 20:13:25.999 INFO [stdout] 
Dec 01 20:13:25.999 INFO [stdout] running 0 tests
Dec 01 20:13:25.999 INFO [stdout] 
Dec 01 20:13:25.999 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 01 20:13:25.999 INFO [stdout] 
Dec 01 20:13:26.003 INFO [stderr]      Running /target/debug/deps/raftd-b073fe3a71a04472
Dec 01 20:13:26.005 INFO [stdout] 
Dec 01 20:13:26.005 INFO [stdout] running 0 tests
Dec 01 20:13:26.005 INFO [stdout] 
Dec 01 20:13:26.006 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 01 20:13:26.006 INFO [stdout] 
Dec 01 20:13:26.011 INFO [stderr]    Doc-tests raft
Dec 01 20:13:28.247 INFO [stdout] 
Dec 01 20:13:28.247 INFO [stdout] running 0 tests
Dec 01 20:13:28.247 INFO [stdout] 
Dec 01 20:13:28.247 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 01 20:13:28.247 INFO [stdout] 
Dec 01 20:13:28.271 INFO [stderr] su: No module specific data is present
Dec 01 20:13:29.124 INFO running `"docker" "inspect" "95e8d3766820f1dfacfdee666a4707b428c8b9c18cf082ad721af7f478d849e4"`
Dec 01 20:13:29.556 INFO running `"docker" "rm" "-f" "95e8d3766820f1dfacfdee666a4707b428c8b9c18cf082ad721af7f478d849e4"`
Dec 01 20:13:29.839 INFO [stdout] 95e8d3766820f1dfacfdee666a4707b428c8b9c18cf082ad721af7f478d849e4
