[INFO] cloning repository https://github.com/ytitov/cbor-action-server
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ytitov/cbor-action-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fytitov%2Fcbor-action-server"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fytitov%2Fcbor-action-server'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f5fbfc166fe3c147f1ca30f3e6698c129b92d29e
[INFO] checking ytitov/cbor-action-server against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fytitov%2Fcbor-action-server" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ytitov/cbor-action-server on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ytitov/cbor-action-server
[INFO] finished tweaking git repo https://github.com/ytitov/cbor-action-server
[INFO] tweaked toml for git repo https://github.com/ytitov/cbor-action-server written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/ytitov/cbor-action-server already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f70d3a3eb17bc0dad81dd177c07afb7db7af18582b35a7720683caa542fb5c99
[INFO] running `"docker" "start" "-a" "f70d3a3eb17bc0dad81dd177c07afb7db7af18582b35a7720683caa542fb5c99"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking spin v0.5.1
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling proc-macro2 v1.0.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling syn v1.0.3
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cc v1.0.40
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking tracing-core v0.1.5
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking tokio-io v0.2.0-alpha.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-codec v0.2.0-alpha.4
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking backtrace v0.3.34
[INFO] [stderr]     Checking tokio-sync v0.2.0-alpha.4
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.2
[INFO] [stderr]    Compiling tokio-macros v0.2.0-alpha.4
[INFO] [stderr]     Checking tracing v0.1.8
[INFO] [stderr]     Checking tokio-executor v0.2.0-alpha.4
[INFO] [stderr]     Checking tokio-timer v0.3.0-alpha.4
[INFO] [stderr]     Checking tokio-fs v0.2.0-alpha.4
[INFO] [stderr]     Checking tokio-net v0.2.0-alpha.4
[INFO] [stderr]     Checking tokio v0.2.0-alpha.4
[INFO] [stderr]     Checking cbor-action-server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `tokio::sync::mpsc::UnboundedSender`
[INFO] [stderr]  --> src/server/mod.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use tokio::sync::mpsc::UnboundedSender;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::Message`
[INFO] [stderr]  --> src/server/mod.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crate::Message;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Buf`
[INFO] [stderr]  --> src/server/mod.rs:8:23
[INFO] [stderr]   |
[INFO] [stderr] 8 | use bytes::{BytesMut, Buf};
[INFO] [stderr]   |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::sync::mpsc::UnboundedSender`
[INFO] [stderr]  --> src/server/mod.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use tokio::sync::mpsc::UnboundedSender;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::Message`
[INFO] [stderr]  --> src/server/mod.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crate::Message;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Buf`
[INFO] [stderr]  --> src/server/mod.rs:8:23
[INFO] [stderr]   |
[INFO] [stderr] 8 | use bytes::{BytesMut, Buf};
[INFO] [stderr]   |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `socket`
[INFO] [stderr]   --> src/server/mod.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     socket: TcpStream,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `rx_buf`
[INFO] [stderr]   --> src/server/mod.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     rx_buf: BytesMut,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `socket`
[INFO] [stderr]   --> src/server/mod.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     socket: TcpStream,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `rx_buf`
[INFO] [stderr]   --> src/server/mod.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     rx_buf: BytesMut,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BufMut`, `Buf`, `BytesMut`
[INFO] [stderr]  --> examples/server.rs:6:20
[INFO] [stderr]   |
[INFO] [stderr] 6 | use bytes::{Bytes, BytesMut, BufMut, Buf};
[INFO] [stderr]   |                    ^^^^^^^^  ^^^^^^  ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::net::TcpStream`
[INFO] [stderr]  --> examples/client.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use tokio::net::TcpStream;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::prelude::*`
[INFO] [stderr]  --> examples/client.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use tokio::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0061]: this function takes 2 arguments but 1 argument was supplied
[INFO] [stderr]   --> examples/client.rs:16:17
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let mut c = client::Connection::new(addr);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^ ---- supplied 1 argument
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 expected 2 arguments
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> examples/server.rs:46:21
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 let n = match socket.read(&mut buf).await {
[INFO] [stderr]    |                     ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tx_copy`
[INFO] [stderr]   --> examples/server.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |         let mut tx_copy = tx.clone();
[INFO] [stderr]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tx_copy`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0061`.
[INFO] [stderr] error: could not compile `cbor-action-server`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/server.rs:31:14
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let (tx, mut rx): (Sender<Bytes>, Receiver<Bytes>) = channel(10);
[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: variable does not need to be mutable
[INFO] [stderr]   --> examples/server.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |         let mut tx_copy = tx.clone();
[INFO] [stderr]    |             ----^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> examples/server.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(async_await)]
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "f70d3a3eb17bc0dad81dd177c07afb7db7af18582b35a7720683caa542fb5c99"`
[INFO] running `"docker" "rm" "-f" "f70d3a3eb17bc0dad81dd177c07afb7db7af18582b35a7720683caa542fb5c99"`
[INFO] [stdout] f70d3a3eb17bc0dad81dd177c07afb7db7af18582b35a7720683caa542fb5c99