diff --git a/.travis.yml b/.travis.yml
index c0703a0..cbeef25 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,7 @@ before_script:
 script:
   - cargo test
   - cargo clippy
+  - cd raftlog_simu; cargo clippy --all-targets
 
 matrix:
   allow_failures:
diff --git a/raftlog_simu/Cargo.toml b/raftlog_simu/Cargo.toml
index 3bacd4e..9c7c9cb 100644
--- a/raftlog_simu/Cargo.toml
+++ b/raftlog_simu/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+edition = "2018"
 name = "raftlog_simu"
 version = "0.1.0"
 authors = ["The FrugalOS Developers"]
diff --git a/raftlog_simu/src/io/configs.rs b/raftlog_simu/src/io/configs.rs
index 589eabc..a341f30 100644
--- a/raftlog_simu/src/io/configs.rs
+++ b/raftlog_simu/src/io/configs.rs
@@ -1,5 +1,5 @@
 //! I/O関連の構成設定を集めたモジュール.
-use types::{LogicalDuration, Probability, Range};
+use crate::types::{LogicalDuration, Probability, Range};
 
 /// `Timer`用の構成設定.
 #[derive(Debug, Clone, Serialize, Deserialize)]
diff --git a/raftlog_simu/src/io/deterministic.rs b/raftlog_simu/src/io/deterministic.rs
index 3dc7104..370d758 100644
--- a/raftlog_simu/src/io/deterministic.rs
+++ b/raftlog_simu/src/io/deterministic.rs
@@ -4,11 +4,11 @@ use raftlog::message::Message;
 use raftlog::node::NodeId;
 use raftlog::Io;
 
-use io::configs::{ChannelConfig, StorageConfig, TimerConfig};
-use io::futures;
-use io::{MessageBroker, Storage, Timer};
-use types::SharedRng;
-use Result;
+use crate::io::configs::{ChannelConfig, StorageConfig, TimerConfig};
+use crate::io::futures;
+use crate::io::{MessageBroker, Storage, Timer};
+use crate::types::SharedRng;
+use crate::Result;
 
 /// `DeterministicIo`のビルダ.
 pub struct DeterministicIoBuilder {
diff --git a/raftlog_simu/src/io/futures.rs b/raftlog_simu/src/io/futures.rs
index 9f507e8..e9cdeec 100644
--- a/raftlog_simu/src/io/futures.rs
+++ b/raftlog_simu/src/io/futures.rs
@@ -3,8 +3,8 @@ use futures::{Async, Future, Poll};
 use raftlog::election::Ballot;
 use raftlog::log::Log;
 
-use types::LogicalDuration;
-use Error;
+use crate::types::LogicalDuration;
+use crate::Error;
 
 pub type Timeout = DelayedResult<(), Error>;
 pub type SaveBallot = DelayedResult<(), Error>;
diff --git a/raftlog_simu/src/io/storage.rs b/raftlog_simu/src/io/storage.rs
index 5bdcfd9..c08b4cc 100644
--- a/raftlog_simu/src/io/storage.rs
+++ b/raftlog_simu/src/io/storage.rs
@@ -6,10 +6,10 @@ use raftlog::log::{Log, LogIndex, LogPosition, LogPrefix, LogSuffix};
 use raftlog::node::NodeId;
 use trackable::error::ErrorKindExt;
 
-use io::configs::StorageConfig;
-use io::futures::{DelayedResult, LoadBallot, LoadLog, SaveBallot, SaveLog};
-use types::SharedRng;
-use {ErrorKind, Result};
+use crate::io::configs::StorageConfig;
+use crate::io::futures::{DelayedResult, LoadBallot, LoadLog, SaveBallot, SaveLog};
+use crate::types::SharedRng;
+use crate::{ErrorKind, Result};
 
 /// シミュレータ用のストレージ実装.
 ///
diff --git a/raftlog_simu/src/io/timer.rs b/raftlog_simu/src/io/timer.rs
index 4c1e403..9a48dd7 100644
--- a/raftlog_simu/src/io/timer.rs
+++ b/raftlog_simu/src/io/timer.rs
@@ -1,9 +1,9 @@
 use raftlog::election::Role;
 use rand::Rng;
 
-use io::configs::TimerConfig;
-use io::futures::{DelayedResult, Timeout};
-use types::SharedRng;
+use crate::io::configs::TimerConfig;
+use crate::io::futures::{DelayedResult, Timeout};
+use crate::types::SharedRng;
 
 /// シミュレータ用のタイマー実装.
 ///
diff --git a/raftlog_simu/src/io/transport.rs b/raftlog_simu/src/io/transport.rs
index 4cd3c8b..db0d2c6 100644
--- a/raftlog_simu/src/io/transport.rs
+++ b/raftlog_simu/src/io/transport.rs
@@ -5,9 +5,9 @@ use std::cmp::Ordering;
 use std::collections::{BinaryHeap, HashMap};
 use std::rc::Rc;
 
-use io::configs::ChannelConfig;
-use types::SharedRng;
-use Result;
+use crate::io::configs::ChannelConfig;
+use crate::types::SharedRng;
+use crate::Result;
 
 /// シミュレータ用のRPCメッセージブローカー.
 ///
diff --git a/raftlog_simu/src/lib.rs b/raftlog_simu/src/lib.rs
index c2dfb3a..6aa7656 100644
--- a/raftlog_simu/src/lib.rs
+++ b/raftlog_simu/src/lib.rs
@@ -21,10 +21,10 @@ macro_rules! log {
 pub use raftlog::{Error, ErrorKind, Result};
 
 #[doc(no_inline)]
-pub use io::{DeterministicIo, DeterministicIoBuilder};
-pub use logger::Logger;
-pub use simulator::Simulator;
-pub use simulator_config::SimulatorConfig;
+pub use crate::io::{DeterministicIo, DeterministicIoBuilder};
+pub use crate::logger::Logger;
+pub use crate::simulator::Simulator;
+pub use crate::simulator_config::SimulatorConfig;
 
 pub mod io;
 pub mod machine;
diff --git a/raftlog_simu/src/machine.rs b/raftlog_simu/src/machine.rs
index 701a377..67b9196 100644
--- a/raftlog_simu/src/machine.rs
+++ b/raftlog_simu/src/machine.rs
@@ -6,9 +6,9 @@ use raftlog::Event;
 use std::collections::BTreeMap;
 use trackable::error::ErrorKindExt;
 
-use process::Process;
-use types::LogicalDuration;
-use {DeterministicIoBuilder, Error, ErrorKind, Logger, Result};
+use crate::process::Process;
+use crate::types::LogicalDuration;
+use crate::{DeterministicIoBuilder, Error, ErrorKind, Logger, Result};
 
 /// 状態機械に発行されるコマンド(加算値).
 pub type Command = u64;
diff --git a/raftlog_simu/src/process.rs b/raftlog_simu/src/process.rs
index de6e933..2536f9b 100644
--- a/raftlog_simu/src/process.rs
+++ b/raftlog_simu/src/process.rs
@@ -6,12 +6,11 @@ use raftlog::log::{LogEntry, LogIndex, ProposalId};
 use raftlog::message::SequenceNumber;
 use raftlog::node::NodeId;
 use raftlog::{Event, Io, ReplicatedLog};
-use serdeconv;
 use std::collections::VecDeque;
 
-use machine::{Command, MachineState};
-use types::LogicalDuration;
-use {DeterministicIo, Error, ErrorKind, Logger, Result};
+use crate::machine::{Command, MachineState};
+use crate::types::LogicalDuration;
+use crate::{DeterministicIo, Error, ErrorKind, Logger, Result};
 
 /// プロセス.
 ///
@@ -188,7 +187,7 @@ impl Stream for Process {
     }
 }
 
-#[cfg_attr(feature = "cargo-clippy", allow(large_enum_variant))]
+#[allow(clippy::large_enum_variant)]
 enum ProcessState {
     Alive(Alive),
     Down(Down),
@@ -270,7 +269,8 @@ impl Alive {
     ) -> Self {
         let metric_builder = MetricBuilder::new();
         let machine = MachineState::new();
-        let rlog = ReplicatedLog::new(node_id, old_members, io, &metric_builder).expect("Never fails");
+        let rlog =
+            ReplicatedLog::new(node_id, old_members, io, &metric_builder).expect("Never fails");
         Alive {
             logger,
             machine,
diff --git a/raftlog_simu/src/simulator.rs b/raftlog_simu/src/simulator.rs
index 6c97eea..a060ba0 100644
--- a/raftlog_simu/src/simulator.rs
+++ b/raftlog_simu/src/simulator.rs
@@ -4,9 +4,9 @@ use raftlog::node::NodeId;
 use raftlog::Event;
 use rand::Rng;
 
-use machine::{MachineState, ReplicatedStateMachine};
-use types::SharedRng;
-use {DeterministicIoBuilder, ErrorKind, Logger, Result, SimulatorConfig};
+use crate::machine::{MachineState, ReplicatedStateMachine};
+use crate::types::SharedRng;
+use crate::{DeterministicIoBuilder, ErrorKind, Logger, Result, SimulatorConfig};
 
 /// シミュレータ.
 pub struct Simulator {
diff --git a/raftlog_simu/src/simulator_config.rs b/raftlog_simu/src/simulator_config.rs
index 0c302f3..317a3fd 100644
--- a/raftlog_simu/src/simulator_config.rs
+++ b/raftlog_simu/src/simulator_config.rs
@@ -4,8 +4,8 @@ use rand::{Rng, SeedableRng, StdRng};
 use std::collections::BTreeSet;
 use std::time::{SystemTime, UNIX_EPOCH};
 
-use io::IoConfig;
-use types::{LogicalDuration, Probability, Range, SharedRng};
+use crate::io::IoConfig;
+use crate::types::{LogicalDuration, Probability, Range, SharedRng};
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct SimulatorConfig {