Upgrade rust toolchains

Author: majecty

.travis.yml

@@ -1,36 +1,36 @@
 language: rust
 rust:
-  - 1.38.0
+  - 1.42.0
 jobs:
     include:
         - name: server
           before_install:
             - cd $TRAVIS_JOB_NAME
           install:
             - rustup set profile minimal
-            - rustup toolchain install nightly-2019-10-13
-            - rustup component add rustfmt-preview --toolchain nightly-2019-10-13
-            - rustup component add clippy-preview --toolchain nightly-2019-10-13
+            - rustup toolchain install nightly-2020-02-23
+            - rustup component add rustfmt-preview --toolchain nightly-2020-02-23
+            - rustup component add clippy-preview --toolchain nightly-2020-02-23
           before_script:
             - cargo fetch --verbose
           script:
-            - cargo +nightly-2019-10-13 fmt -- --check
+            - cargo +nightly-2020-02-23 fmt -- --check
               && RUST_BACKTRACE=1 cargo test --verbose --all
-              && cargo +nightly-2019-10-13 clippy --all --all-targets -- -D warnings
+              && cargo +nightly-2020-02-23 clippy --all --all-targets -- -D warnings
         - name: client
           before_install:
             - cd $TRAVIS_JOB_NAME
           install:
             - rustup set profile minimal
-            - rustup toolchain install nightly-2019-10-13
-            - rustup component add rustfmt-preview --toolchain nightly-2019-10-13
-            - rustup component add clippy-preview --toolchain nightly-2019-10-13
+            - rustup toolchain install nightly-2020-02-23
+            - rustup component add rustfmt-preview --toolchain nightly-2020-02-23
+            - rustup component add clippy-preview --toolchain nightly-2020-02-23
           before_script:
             - cargo fetch --verbose
           script:
-            - cargo +nightly-2019-10-13 fmt -- --check
+            - cargo +nightly-2020-02-23 fmt -- --check
               && RUST_BACKTRACE=1 cargo test --verbose --all
-              && cargo +nightly-2019-10-13 clippy --all --all-targets -- -D warnings
+              && cargo +nightly-2020-02-23 clippy --all --all-targets -- -D warnings
         - name: ui
           before_install:
             - cd $TRAVIS_JOB_NAME

client/rust-toolchain

@@ -1 +1 @@
-1.38.0
+1.42.0

client/src/handler.rs

@@ -3,7 +3,6 @@ use super::types::HandlerContext;
 use jsonrpc_core::types::{
     Call, Error as JSONRPCError, ErrorCode, Failure, Id, MethodCall, Response, Success, Version,
 };
-use serde_json;
 use std::cell::Cell;
 use std::rc::Rc;
 use std::sync::Arc;

client/src/hardware_usage.rs

@@ -2,7 +2,6 @@ use crossbeam::channel::{Receiver, Sender};
 use crossbeam::{channel, select};
 use parking_lot::Mutex;
 use serde_derive::Serialize;
-use std::error::Error;
 use std::sync::Arc;
 use std::thread;
 use std::time::Duration;
@@ -81,12 +80,12 @@ impl HardwareService {
 
     fn prepare_cpu_usage(&self) -> Result<CpuMeasurement, String> {
         let sys = systemstat::System::new();
-        Ok(sys.cpu_load().map_err(|err| err.description().to_string())?)
+        Ok(sys.cpu_load().map_err(|err| err.to_string())?)
     }
 
     fn update(&mut self, cpu_measure: Option<CpuMeasurement>, sysinfo_sys: &mut sysinfo::System) -> Result<(), String> {
         let cpu_usage = if let Some(measure) = cpu_measure {
-            let cpu = measure.done().map_err(|err| err.description().to_string())?;
+            let cpu = measure.done().map_err(|err| err.to_string())?;
             cpu.iter().map(|core| f64::from(core.user + core.system)).collect()
         } else {
             Vec::new()

client/src/logger/logger.rs

@@ -1,9 +1,7 @@
-use atty;
 use colored::Colorize;
 use env_logger::filter::{Builder as FilterBuilder, Filter};
 use log::{LevelFilter, Log, Metadata, Record};
 use std::{env, thread};
-use time;
 
 pub struct Logger {
     filter: Filter,

client/src/process/binary_update.rs

@@ -1,6 +1,5 @@
 use super::update::{CallbackResult, Sender};
 use super::{fs_util, Error};
-use crossbeam;
 use std::thread;
 
 pub struct Job {}

client/src/process/git_update.rs

@@ -1,7 +1,6 @@
 use super::super::types::CommitHash;
 use super::update::{CallbackResult, Sender};
 use super::{git_util, Error};
-use crossbeam;
 use std::thread;
 
 pub struct Job {}

client/src/process/mod.rs

@@ -22,7 +22,6 @@ use std::sync::Arc;
 use std::time::Duration;
 use std::{fs, thread};
 use subprocess::{Exec, ExitStatus, PopenError};
-use toml;
 
 #[derive(Debug)]
 pub enum Error {

client/src/process/rpc.rs

@@ -1,4 +1,3 @@
-use jsonrpc_core;
 use jsonrpc_core::types::Version;
 use parking_lot::Mutex;
 use serde_json::{Error as SerdeError, Value};

server/rust-toolchain

@@ -1 +1 @@
-1.38.0
+1.42.0