[INFO] cloning repository DevinR528/rust_load_balance
[INFO] running `"git" "clone" "--bare" "git://github.com/DevinR528/rust_load_balance.git" "work/cache/sources/gh/DevinR528/rust_load_balance"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/DevinR528/rust_load_balance'...
[INFO] running `"git" "clone" "work/cache/sources/gh/DevinR528/rust_load_balance" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/DevinR528/rust_load_balance"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/DevinR528/rust_load_balance'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/DevinR528/rust_load_balance" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/DevinR528/rust_load_balance"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/DevinR528/rust_load_balance'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e1bf79c4cd21b55f16bb5dc943e7f0ce63e3dad7
[INFO] sha for GitHub repo DevinR528/rust_load_balance: e1bf79c4cd21b55f16bb5dc943e7f0ce63e3dad7
[INFO] validating manifest of DevinR528/rust_load_balance on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of DevinR528/rust_load_balance on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing DevinR528/rust_load_balance
[INFO] finished frobbing DevinR528/rust_load_balance
[INFO] frobbed toml for DevinR528/rust_load_balance written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/DevinR528/rust_load_balance/Cargo.toml
[INFO] started frobbing DevinR528/rust_load_balance
[INFO] finished frobbing DevinR528/rust_load_balance
[INFO] frobbed toml for DevinR528/rust_load_balance written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/DevinR528/rust_load_balance/Cargo.toml
[INFO] crate DevinR528/rust_load_balance already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking DevinR528/rust_load_balance against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-7/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/DevinR528/rust_load_balance:/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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3ce52dced9dd8f4bbb51d341d3d362b87a9c16f367097b43d442c5d646ab1b00
[INFO] running `"docker" "start" "-a" "3ce52dced9dd8f4bbb51d341d3d362b87a9c16f367097b43d442c5d646ab1b00"`
[INFO] [stderr]     Checking streams v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::sync::mpsc;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BytesCodec`, `Decoder`, `Encoder`, `Framed`
[INFO] [stderr]  --> src/main.rs:9:20
[INFO] [stderr]   |
[INFO] [stderr] 9 | use tokio::codec::{BytesCodec, Decoder, Encoder, Framed};
[INFO] [stderr]   |                    ^^^^^^^^^^  ^^^^^^^  ^^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Error`, `Fail`, `Fallible`
[INFO] [stderr]   --> src/main.rs:13:15
[INFO] [stderr]    |
[INFO] [stderr] 13 | use failure::{Error, Fail, Fallible};
[INFO] [stderr]    |               ^^^^^  ^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_derive::*`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use serde_derive::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use serde_json;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::borrow::BorrowMut`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | use core::borrow::BorrowMut;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/enc_dec.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc`
[INFO] [stderr]  --> src/enc_dec.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::sync::mpsc;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::prelude::*`
[INFO] [stderr]  --> src/enc_dec.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use futures::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Error`, `Fallible`
[INFO] [stderr]   --> src/enc_dec.rs:12:15
[INFO] [stderr]    |
[INFO] [stderr] 12 | use failure::{Error, Fail, Fallible};
[INFO] [stderr]    |               ^^^^^        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::sync::mpsc;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BytesCodec`, `Decoder`, `Encoder`, `Framed`
[INFO] [stderr]  --> src/main.rs:9:20
[INFO] [stderr]   |
[INFO] [stderr] 9 | use tokio::codec::{BytesCodec, Decoder, Encoder, Framed};
[INFO] [stderr]   |                    ^^^^^^^^^^  ^^^^^^^  ^^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Error`, `Fail`, `Fallible`
[INFO] [stderr]   --> src/main.rs:13:15
[INFO] [stderr]    |
[INFO] [stderr] 13 | use failure::{Error, Fail, Fallible};
[INFO] [stderr]    |               ^^^^^  ^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_derive::*`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use serde_derive::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use serde_json;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::borrow::BorrowMut`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | use core::borrow::BorrowMut;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/enc_dec.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc`
[INFO] [stderr]  --> src/enc_dec.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::sync::mpsc;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::prelude::*`
[INFO] [stderr]  --> src/enc_dec.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use futures::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Error`, `Fallible`
[INFO] [stderr]   --> src/enc_dec.rs:12:15
[INFO] [stderr]    |
[INFO] [stderr] 12 | use failure::{Error, Fail, Fallible};
[INFO] [stderr]    |               ^^^^^        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `bytes::buf::IntoBuf`
[INFO] [stderr]    --> src/main.rs:199:9
[INFO] [stderr]     |
[INFO] [stderr] 199 |     use bytes::buf::IntoBuf;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Fail`
[INFO] [stderr]   --> src/enc_dec.rs:12:22
[INFO] [stderr]    |
[INFO] [stderr] 12 | use failure::{Error, Fail, Fallible};
[INFO] [stderr]    |                      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `get`
[INFO] [stderr]   --> src/main.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let get = b"GET / HTTP/1.1\r\n";
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_get`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Fail`
[INFO] [stderr]   --> src/enc_dec.rs:12:22
[INFO] [stderr]    |
[INFO] [stderr] 12 | use failure::{Error, Fail, Fallible};
[INFO] [stderr]    |                      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `get`
[INFO] [stderr]   --> src/main.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let get = b"GET / HTTP/1.1\r\n";
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_get`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `amt`
[INFO] [stderr]    --> src/main.rs:247:21
[INFO] [stderr]     |
[INFO] [stderr] 247 |                 let amt = conn.write(b"123\r\n".as_ref()).unwrap();
[INFO] [stderr]     |                     ^^^ help: consider prefixing with an underscore: `_amt`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Header`
[INFO] [stderr]   --> src/enc_dec.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     Header,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Body`
[INFO] [stderr]   --> src/enc_dec.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     Body,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `JsonCodec`
[INFO] [stderr]   --> src/enc_dec.rs:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub struct JsonCodec {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/enc_dec.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn new() -> JsonCodec {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `poll_flush`
[INFO] [stderr]    --> src/main.rs:137:5
[INFO] [stderr]     |
[INFO] [stderr] 137 |     fn poll_flush(&mut self) -> Poll<(), tokio::io::Error> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:241:19
[INFO] [stderr]     |
[INFO] [stderr] 241 |             .map(|mut s| s).wait().unwrap();
[INFO] [stderr]     |                   ----^
[INFO] [stderr]     |                   |
[INFO] [stderr]     |                   help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Header`
[INFO] [stderr]   --> src/enc_dec.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     Header,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Body`
[INFO] [stderr]   --> src/enc_dec.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     Body,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `JsonCodec`
[INFO] [stderr]   --> src/enc_dec.rs:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub struct JsonCodec {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/enc_dec.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn new() -> JsonCodec {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `poll_flush`
[INFO] [stderr]    --> src/main.rs:137:5
[INFO] [stderr]     |
[INFO] [stderr] 137 |     fn poll_flush(&mut self) -> Poll<(), tokio::io::Error> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:249:17
[INFO] [stderr]     |
[INFO] [stderr] 249 |                 rw.fill_read_buf();
[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 2.61s
[INFO] running `"docker" "inspect" "3ce52dced9dd8f4bbb51d341d3d362b87a9c16f367097b43d442c5d646ab1b00"`
[INFO] running `"docker" "rm" "-f" "3ce52dced9dd8f4bbb51d341d3d362b87a9c16f367097b43d442c5d646ab1b00"`
[INFO] [stdout] 3ce52dced9dd8f4bbb51d341d3d362b87a9c16f367097b43d442c5d646ab1b00