[INFO] cloning repository https://github.com/EmmaLa/tokio-chat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EmmaLa/tokio-chat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEmmaLa%2Ftokio-chat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEmmaLa%2Ftokio-chat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf17a85c54d53a88e8ceb4789897defe10667c70
[INFO] checking EmmaLa/tokio-chat against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEmmaLa%2Ftokio-chat" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/EmmaLa/tokio-chat on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/EmmaLa/tokio-chat
[INFO] finished tweaking git repo https://github.com/EmmaLa/tokio-chat
[INFO] tweaked toml for git repo https://github.com/EmmaLa/tokio-chat written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/EmmaLa/tokio-chat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-io v0.1.5
[INFO] [stderr]   Downloaded cfg-if v0.1.2
[INFO] [stderr]   Downloaded ws2_32-sys v0.2.1
[INFO] [stderr]   Downloaded iovec v0.1.2
[INFO] [stderr]   Downloaded log v0.4.1
[INFO] [stderr]   Downloaded fuchsia-zircon-sys v0.3.3
[INFO] [stderr]   Downloaded slab v0.3.0
[INFO] [stderr]   Downloaded winapi-build v0.1.1
[INFO] [stderr]   Downloaded lazycell v0.6.0
[INFO] [stderr]   Downloaded bitflags v1.0.1
[INFO] [stderr]   Downloaded slab v0.4.0
[INFO] [stderr]   Downloaded fuchsia-zircon v0.3.3
[INFO] [stderr]   Downloaded log v0.3.9
[INFO] [stderr]   Downloaded kernel32-sys v0.2.2
[INFO] [stderr]   Downloaded bytes v0.4.6
[INFO] [stderr]   Downloaded net2 v0.2.31
[INFO] [stderr]   Downloaded mio v0.6.13
[INFO] [stderr]   Downloaded futures v0.1.18
[INFO] [stderr]   Downloaded miow v0.2.1
[INFO] [stderr]   Downloaded byteorder v1.2.1
[INFO] [stderr]   Downloaded libc v0.2.36
[INFO] [stderr]   Downloaded winapi v0.2.8
[INFO] [stderr]   Downloaded tokio v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69e35de1f1879a75e74268d27477c953fcd2a489259963a1c930749e4af52812
[INFO] running `Command { std: "docker" "start" "-a" "69e35de1f1879a75e74268d27477c953fcd2a489259963a1c930749e4af52812", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69e35de1f1879a75e74268d27477c953fcd2a489259963a1c930749e4af52812", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69e35de1f1879a75e74268d27477c953fcd2a489259963a1c930749e4af52812", kill_on_drop: false }`
[INFO] [stdout] 69e35de1f1879a75e74268d27477c953fcd2a489259963a1c930749e4af52812
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a908b6bc7bc4b4116181c4ecf68a54afc42c00ae10956e728e1fbd3efef63655
[INFO] running `Command { std: "docker" "start" "-a" "a908b6bc7bc4b4116181c4ecf68a54afc42c00ae10956e728e1fbd3efef63655", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking libc v0.2.36
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]     Checking futures v0.1.18
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking net2 v0.2.31
[INFO] [stderr]     Checking bytes v0.4.6
[INFO] [stderr]     Checking mio v0.6.13
[INFO] [stderr]     Checking tokio-io v0.1.5
[INFO] [stderr]     Checking tokio v0.1.1
[INFO] [stderr]     Checking tokio-chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `AsyncWrite`
[INFO] [stdout]  --> src/main.rs:9:28
[INFO] [stdout]   |
[INFO] [stdout] 9 | use tokio_io::{ AsyncRead, AsyncWrite};
[INFO] [stdout]   |                            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]   --> src/main.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::io::{Write};
[INFO] [stdout]    |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::sync::Arc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Mutex`
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::sync::Mutex;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncWrite`
[INFO] [stdout]  --> src/main.rs:9:28
[INFO] [stdout]   |
[INFO] [stdout] 9 | use tokio_io::{ AsyncRead, AsyncWrite};
[INFO] [stdout]   |                            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]   --> src/main.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::io::{Write};
[INFO] [stdout]    |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::sync::Arc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Mutex`
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::sync::Mutex;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |         let mut chuck_data = chunk_data.for_each(move |data| {
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Rx` is never used
[INFO] [stdout]   --> src/main.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | type Rx = mpsc::UnboundedReceiver<BytesMut>;
[INFO] [stdout]    |      ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `state` is never read
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct ChunkData{
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 37 |     state: Rc<RefCell<SharedState>>
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |         let mut chuck_data = chunk_data.for_each(move |data| {
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Rx` is never used
[INFO] [stdout]   --> src/main.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | type Rx = mpsc::UnboundedReceiver<BytesMut>;
[INFO] [stdout]    |      ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `state` is never read
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct ChunkData{
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 37 |     state: Rc<RefCell<SharedState>>
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.66s
[INFO] running `Command { std: "docker" "inspect" "a908b6bc7bc4b4116181c4ecf68a54afc42c00ae10956e728e1fbd3efef63655", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a908b6bc7bc4b4116181c4ecf68a54afc42c00ae10956e728e1fbd3efef63655", kill_on_drop: false }`
[INFO] [stdout] a908b6bc7bc4b4116181c4ecf68a54afc42c00ae10956e728e1fbd3efef63655