[INFO] updating cached repository EmmaLa/tokio-chat
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/EmmaLa/tokio-chat
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/EmmaLa/tokio-chat" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/EmmaLa/tokio-chat"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/EmmaLa/tokio-chat'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/EmmaLa/tokio-chat" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/EmmaLa/tokio-chat"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/EmmaLa/tokio-chat'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bf17a85c54d53a88e8ceb4789897defe10667c70
[INFO] sha for GitHub repo EmmaLa/tokio-chat: bf17a85c54d53a88e8ceb4789897defe10667c70
[INFO] validating manifest of EmmaLa/tokio-chat on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of EmmaLa/tokio-chat on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing EmmaLa/tokio-chat
[INFO] finished frobbing EmmaLa/tokio-chat
[INFO] frobbed toml for EmmaLa/tokio-chat written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/EmmaLa/tokio-chat/Cargo.toml
[INFO] started frobbing EmmaLa/tokio-chat
[INFO] finished frobbing EmmaLa/tokio-chat
[INFO] frobbed toml for EmmaLa/tokio-chat written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/EmmaLa/tokio-chat/Cargo.toml
[INFO] crate EmmaLa/tokio-chat already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking EmmaLa/tokio-chat against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-6/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/EmmaLa/tokio-chat:/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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7ab26efb79b83300b32da6fd769c28909d2ae3d0d2f5d2248152caa1ab456d15
[INFO] running `"docker" "start" "-a" "7ab26efb79b83300b32da6fd769c28909d2ae3d0d2f5d2248152caa1ab456d15"`
[INFO] [stderr]     Checking tokio-chat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `AsyncWrite`
[INFO] [stderr]  --> src/main.rs:9:28
[INFO] [stderr]   |
[INFO] [stderr] 9 | use tokio_io::{ AsyncRead, AsyncWrite};
[INFO] [stderr]   |                            ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]   --> src/main.rs:16:15
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::io::{Write};
[INFO] [stderr]    |               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Arc`
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use std::sync::Arc;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Mutex`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::sync::Mutex;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `AsyncWrite`
[INFO] [stderr]  --> src/main.rs:9:28
[INFO] [stderr]   |
[INFO] [stderr] 9 | use tokio_io::{ AsyncRead, AsyncWrite};
[INFO] [stderr]   |                            ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]   --> src/main.rs:16:15
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::io::{Write};
[INFO] [stderr]    |               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Arc`
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use std::sync::Arc;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Mutex`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::sync::Mutex;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:119:13
[INFO] [stderr]     |
[INFO] [stderr] 119 |         let mut chuck_data = chunk_data.for_each(move |data| {
[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: type alias is never used: `Rx`
[INFO] [stderr]   --> src/main.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | type Rx = mpsc::UnboundedReceiver<BytesMut>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `state`
[INFO] [stderr]   --> src/main.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     state: Rc<RefCell<SharedState>>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:119:13
[INFO] [stderr]     |
[INFO] [stderr] 119 |         let mut chuck_data = chunk_data.for_each(move |data| {
[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: type alias is never used: `Rx`
[INFO] [stderr]   --> src/main.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | type Rx = mpsc::UnboundedReceiver<BytesMut>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `state`
[INFO] [stderr]   --> src/main.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     state: Rc<RefCell<SharedState>>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.48s
[INFO] running `"docker" "inspect" "7ab26efb79b83300b32da6fd769c28909d2ae3d0d2f5d2248152caa1ab456d15"`
[INFO] running `"docker" "rm" "-f" "7ab26efb79b83300b32da6fd769c28909d2ae3d0d2f5d2248152caa1ab456d15"`
[INFO] [stdout] 7ab26efb79b83300b32da6fd769c28909d2ae3d0d2f5d2248152caa1ab456d15