[INFO] cloning repository https://github.com/laoning2008/asyncmsg-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/laoning2008/asyncmsg-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaoning2008%2Fasyncmsg-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaoning2008%2Fasyncmsg-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf272a817c58dce597662cc48703b750845e5359
[INFO] checking laoning2008/asyncmsg-rust against master#f2d69d5a7c04617d122facd0a7a5bdde0af928ae for pr-138363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaoning2008%2Fasyncmsg-rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/laoning2008/asyncmsg-rust on toolchain f2d69d5a7c04617d122facd0a7a5bdde0af928ae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f2d69d5a7c04617d122facd0a7a5bdde0af928ae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/laoning2008/asyncmsg-rust
[INFO] finished tweaking git repo https://github.com/laoning2008/asyncmsg-rust
[INFO] tweaked toml for git repo https://github.com/laoning2008/asyncmsg-rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/laoning2008/asyncmsg-rust 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" "+f2d69d5a7c04617d122facd0a7a5bdde0af928ae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bytebuffer v2.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+f2d69d5a7c04617d122facd0a7a5bdde0af928ae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 42cc342ad9593bfe9d3a8d19c11db51b1a927fafdbe3c0dcb68d8e5d2c226295
[INFO] running `Command { std: "docker" "start" "-a" "42cc342ad9593bfe9d3a8d19c11db51b1a927fafdbe3c0dcb68d8e5d2c226295", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42cc342ad9593bfe9d3a8d19c11db51b1a927fafdbe3c0dcb68d8e5d2c226295", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42cc342ad9593bfe9d3a8d19c11db51b1a927fafdbe3c0dcb68d8e5d2c226295", kill_on_drop: false }`
[INFO] [stdout] 42cc342ad9593bfe9d3a8d19c11db51b1a927fafdbe3c0dcb68d8e5d2c226295
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+f2d69d5a7c04617d122facd0a7a5bdde0af928ae" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa48d4a5bdee7cd147d37b765aa1eb11718b62dff7adac6bb4b463b89619dc26
[INFO] running `Command { std: "docker" "start" "-a" "fa48d4a5bdee7cd147d37b765aa1eb11718b62dff7adac6bb4b463b89619dc26", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]     Checking smallvec v1.11.2
[INFO] [stderr]    Compiling futures-task v0.3.29
[INFO] [stderr]     Checking pin-project-lite v0.2.13
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[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling futures-util v0.3.29
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking iana-time-zone v0.1.58
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[INFO] [stderr]     Checking tracing-core v0.1.32
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[INFO] [stderr]    Compiling num-traits v0.2.17
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[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.29
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[INFO] [stderr]     Checking asyncmsg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `req_receiver` is never read
[INFO] [stdout]    --> src/tcp/client.rs:113:17
[INFO] [stdout]     |
[INFO] [stdout] 113 |         let mut req_receiver : Option<mpsc::Receiver<Packet>> = None;
[INFO] [stdout]     |                 ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `req_receiver` is never read
[INFO] [stdout]    --> src/tcp/client.rs:113:17
[INFO] [stdout]     |
[INFO] [stdout] 113 |         let mut req_receiver : Option<mpsc::Receiver<Packet>> = None;
[INFO] [stdout]     |                 ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tcp/server.rs:64:37
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub async fn send_packet(&self, mut packet: Packet) -> Result<()> {
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/tcp/server.rs:64:37
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub async fn send_packet(&self, mut packet: Packet) -> Result<()> {
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/tcp/server.rs:78:55
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub async fn send_packet_and_wait_response(&self, mut packet: Packet, timeout_seconds: u64, max_tries: u32) -> Result<Packet> {
[INFO] [stdout]    |                                                       ----^^^^^^
[INFO] [stdout]    |                                                       |
[INFO] [stdout]    |                                                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `req_receiver` is never read
[INFO] [stdout]    --> src/tcp/server.rs:107:17
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut req_receiver : Option<mpsc::Receiver<Packet>> = None;
[INFO] [stdout]     |                 ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tcp/server.rs:78:55
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub async fn send_packet_and_wait_response(&self, mut packet: Packet, timeout_seconds: u64, max_tries: u32) -> Result<Packet> {
[INFO] [stdout]    |                                                       ----^^^^^^
[INFO] [stdout]    |                                                       |
[INFO] [stdout]    |                                                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `req_receiver` is never read
[INFO] [stdout]    --> src/tcp/server.rs:107:17
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut req_receiver : Option<mpsc::Receiver<Packet>> = None;
[INFO] [stdout]     |                 ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sender`
[INFO] [stdout]    --> src/tcp/server.rs:161:13
[INFO] [stdout]     |
[INFO] [stdout] 161 |         let sender = conn_event_sender.clone();
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sender`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sender`
[INFO] [stdout]    --> src/tcp/server.rs:161:13
[INFO] [stdout]     |
[INFO] [stdout] 161 |         let sender = conn_event_sender.clone();
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sender`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_id`
[INFO] [stdout]    --> src/tcp/server.rs:192:45
[INFO] [stdout]     |
[INFO] [stdout] 192 |                 ConnectionEvent::GotRequest(conn_id, packet) => {
[INFO] [stdout]     |                                             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn_id`
[INFO] [stdout]    --> src/tcp/server.rs:192:45
[INFO] [stdout]     |
[INFO] [stdout] 192 |                 ConnectionEvent::GotRequest(conn_id, packet) => {
[INFO] [stdout]     |                                             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_conn_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::runtime::Runtime`
[INFO] [stdout]  --> examples/tcp_client.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::runtime::Runtime;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow::Result`
[INFO] [stdout]  --> examples/tcp_client.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use anyhow::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/tcp_client.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 |     handle.await;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 85 |     let _ = handle.await;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/tcp_server.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 78 |     handle.await;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let _ = handle.await;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.73s
[INFO] running `Command { std: "docker" "inspect" "fa48d4a5bdee7cd147d37b765aa1eb11718b62dff7adac6bb4b463b89619dc26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa48d4a5bdee7cd147d37b765aa1eb11718b62dff7adac6bb4b463b89619dc26", kill_on_drop: false }`
[INFO] [stdout] fa48d4a5bdee7cd147d37b765aa1eb11718b62dff7adac6bb4b463b89619dc26