[INFO] cloning repository https://github.com/jonhoo/rust-tcp [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jonhoo/rust-tcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonhoo%2Frust-tcp", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonhoo%2Frust-tcp'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonhoo%2Frust-tcp/objects: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 1) [INFO] cloning repository https://github.com/jonhoo/rust-tcp [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jonhoo/rust-tcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonhoo%2Frust-tcp", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonhoo%2Frust-tcp'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 4c1c10ae381a54f75892d1892e769137d5467a8d [INFO] checking jonhoo/rust-tcp against master#75530e9f72a1990ed2305e16fd51d02f47048f12 for pr-138676 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonhoo%2Frust-tcp" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jonhoo/rust-tcp on toolchain 75530e9f72a1990ed2305e16fd51d02f47048f12 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jonhoo/rust-tcp [INFO] finished tweaking git repo https://github.com/jonhoo/rust-tcp [INFO] tweaked toml for git repo https://github.com/jonhoo/rust-tcp written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/jonhoo/rust-tcp 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" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded etherparse v0.8.3 [INFO] [stderr] Downloaded nix v0.13.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4bb069d14e0f689765236a380d0dace1a5591b68e2b1683237ac27e1eadd0104 [INFO] running `Command { std: "docker" "start" "-a" "4bb069d14e0f689765236a380d0dace1a5591b68e2b1683237ac27e1eadd0104", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4bb069d14e0f689765236a380d0dace1a5591b68e2b1683237ac27e1eadd0104", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4bb069d14e0f689765236a380d0dace1a5591b68e2b1683237ac27e1eadd0104", kill_on_drop: false }` [INFO] [stdout] 4bb069d14e0f689765236a380d0dace1a5591b68e2b1683237ac27e1eadd0104 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1930bb049bd448bda43882247657561ab9b91274287fe25a6410350f983badf3 [INFO] running `Command { std: "docker" "start" "-a" "1930bb049bd448bda43882247657561ab9b91274287fe25a6410350f983badf3", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Compiling libc v0.2.137 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Checking futures v0.1.31 [INFO] [stderr] Compiling log v0.4.17 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking scopeguard v1.1.0 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Checking fnv v1.0.7 [INFO] [stderr] Compiling cc v1.0.74 [INFO] [stderr] Compiling nix v0.13.1 [INFO] [stderr] Checking scoped-tls v0.1.2 [INFO] [stderr] Checking bitflags v1.3.2 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking lock_api v0.3.4 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling slab v0.4.7 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Checking etherparse v0.8.3 [INFO] [stderr] Checking smallvec v0.6.14 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking net2 v0.2.38 [INFO] [stderr] Checking num_cpus v1.13.1 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Compiling tun-tap v0.1.3 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking crossbeam-queue v0.2.3 [INFO] [stderr] Checking mio v0.6.23 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Checking crossbeam-deque v0.7.4 [INFO] [stderr] Checking mio-uds v0.6.8 [INFO] [stderr] Checking tokio-executor v0.1.10 [INFO] [stderr] Checking tokio-io v0.1.13 [INFO] [stderr] Checking tokio-sync v0.1.8 [INFO] [stderr] Checking tokio-threadpool v0.1.18 [INFO] [stderr] Checking tokio-current-thread v0.1.7 [INFO] [stderr] Checking tokio-timer v0.2.13 [INFO] [stderr] Checking tokio-codec v0.1.2 [INFO] [stderr] Checking tokio-reactor v0.1.12 [INFO] [stderr] Checking tokio-udp v0.1.6 [INFO] [stderr] Checking tokio-uds v0.2.7 [INFO] [stderr] Checking tokio-tcp v0.1.4 [INFO] [stderr] Checking tokio-fs v0.1.7 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking tokio-core v0.1.18 [INFO] [stderr] Checking trust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `buf` [INFO] [stdout] --> src/tcp.rs:132:13 [INFO] [stdout] | [INFO] [stdout] 132 | let buf = [0u8; 1500]; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_buf` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> src/tcp.rs:130:9 [INFO] [stdout] | [INFO] [stdout] 130 | data: &'a [u8], [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `buf` [INFO] [stdout] --> src/tcp.rs:132:13 [INFO] [stdout] | [INFO] [stdout] 132 | let buf = [0u8; 1500]; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_buf` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> src/tcp.rs:130:9 [INFO] [stdout] | [INFO] [stdout] 130 | data: &'a [u8], [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `iph` [INFO] [stdout] --> src/tcp.rs:377:9 [INFO] [stdout] | [INFO] [stdout] 377 | iph: etherparse::Ipv4HeaderSlice<'a>, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_iph` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/tcp.rs:469:25 [INFO] [stdout] | [INFO] [stdout] 469 | let mut srtt = &mut self.timers.srtt; [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: unused variable: `iph` [INFO] [stdout] --> src/tcp.rs:377:9 [INFO] [stdout] | [INFO] [stdout] 377 | iph: etherparse::Ipv4HeaderSlice<'a>, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_iph` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/lib.rs:155:17 [INFO] [stdout] | [INFO] [stdout] 155 | Err(e) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/tcp.rs:469:25 [INFO] [stdout] | [INFO] [stdout] 469 | let mut srtt = &mut self.timers.srtt; [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: unused variable: `e` [INFO] [stdout] --> src/lib.rs:155:17 [INFO] [stdout] | [INFO] [stdout] 155 | Err(e) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `quad` [INFO] [stdout] --> src/lib.rs:215:13 [INFO] [stdout] | [INFO] [stdout] 215 | for quad in pending { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_quad` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `cm` [INFO] [stdout] --> src/lib.rs:250:13 [INFO] [stdout] | [INFO] [stdout] 250 | let cm = self.h.manager.lock().unwrap(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_cm` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `how` [INFO] [stdout] --> src/lib.rs:336:28 [INFO] [stdout] | [INFO] [stdout] 336 | pub fn shutdown(&self, how: std::net::Shutdown) -> io::Result<()> { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_how` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `quad` [INFO] [stdout] --> src/lib.rs:215:13 [INFO] [stdout] | [INFO] [stdout] 215 | for quad in pending { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_quad` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `is_synchronized` is never used [INFO] [stdout] --> src/tcp.rs:23:8 [INFO] [stdout] | [INFO] [stdout] 22 | impl State { [INFO] [stdout] | ---------- method in this implementation [INFO] [stdout] 23 | fn is_synchronized(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `up`, `wl1`, and `wl2` are never read [INFO] [stdout] --> src/tcp.rs:93:5 [INFO] [stdout] | [INFO] [stdout] 85 | struct SendSequenceSpace { [INFO] [stdout] | ----------------- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 93 | up: bool, [INFO] [stdout] | ^^ [INFO] [stdout] 94 | /// segment sequence number used for last window update [INFO] [stdout] 95 | wl1: usize, [INFO] [stdout] | ^^^ [INFO] [stdout] 96 | /// segment acknowledgment number used for last window update [INFO] [stdout] 97 | wl2: usize, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `up` is never read [INFO] [stdout] --> src/tcp.rs:120:5 [INFO] [stdout] | [INFO] [stdout] 114 | struct RecvSequenceSpace { [INFO] [stdout] | ----------------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 120 | up: bool, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `send_rst` is never used [INFO] [stdout] --> src/tcp.rs:294:8 [INFO] [stdout] | [INFO] [stdout] 125 | impl Connection { [INFO] [stdout] | --------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 294 | fn send_rst(&mut self, nic: &mut tun_tap::Iface) -> io::Result<()> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `cm` [INFO] [stdout] --> src/lib.rs:250:13 [INFO] [stdout] | [INFO] [stdout] 250 | let cm = self.h.manager.lock().unwrap(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_cm` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `how` [INFO] [stdout] --> src/lib.rs:336:28 [INFO] [stdout] | [INFO] [stdout] 336 | pub fn shutdown(&self, how: std::net::Shutdown) -> io::Result<()> { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_how` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `is_synchronized` is never used [INFO] [stdout] --> src/tcp.rs:23:8 [INFO] [stdout] | [INFO] [stdout] 22 | impl State { [INFO] [stdout] | ---------- method in this implementation [INFO] [stdout] 23 | fn is_synchronized(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `up`, `wl1`, and `wl2` are never read [INFO] [stdout] --> src/tcp.rs:93:5 [INFO] [stdout] | [INFO] [stdout] 85 | struct SendSequenceSpace { [INFO] [stdout] | ----------------- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 93 | up: bool, [INFO] [stdout] | ^^ [INFO] [stdout] 94 | /// segment sequence number used for last window update [INFO] [stdout] 95 | wl1: usize, [INFO] [stdout] | ^^^ [INFO] [stdout] 96 | /// segment acknowledgment number used for last window update [INFO] [stdout] 97 | wl2: usize, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `up` is never read [INFO] [stdout] --> src/tcp.rs:120:5 [INFO] [stdout] | [INFO] [stdout] 114 | struct RecvSequenceSpace { [INFO] [stdout] | ----------------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 120 | up: bool, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `send_rst` is never used [INFO] [stdout] --> src/tcp.rs:294:8 [INFO] [stdout] | [INFO] [stdout] 125 | impl Connection { [INFO] [stdout] | --------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 294 | fn send_rst(&mut self, nic: &mut tun_tap::Iface) -> io::Result<()> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:235:9 [INFO] [stdout] | [INFO] [stdout] 235 | / self.ip [INFO] [stdout] 236 | | .set_payload_len(size - self.ip.header_len() as usize); [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] 235 | let _ = self.ip [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:243:9 [INFO] [stdout] | [INFO] [stdout] 243 | self.ip.write(&mut unwritten); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 243 | let _ = self.ip.write(&mut unwritten); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:274:9 [INFO] [stdout] | [INFO] [stdout] 274 | self.tcp.write(&mut tcp_header_buf); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 274 | let _ = self.tcp.write(&mut tcp_header_buf); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:235:9 [INFO] [stdout] | [INFO] [stdout] 235 | / self.ip [INFO] [stdout] 236 | | .set_payload_len(size - self.ip.header_len() as usize); [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] 235 | let _ = self.ip [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:243:9 [INFO] [stdout] | [INFO] [stdout] 243 | self.ip.write(&mut unwritten); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 243 | let _ = self.ip.write(&mut unwritten); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:274:9 [INFO] [stdout] | [INFO] [stdout] 274 | self.tcp.write(&mut tcp_header_buf); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 274 | let _ = self.tcp.write(&mut tcp_header_buf); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.28s [INFO] running `Command { std: "docker" "inspect" "1930bb049bd448bda43882247657561ab9b91274287fe25a6410350f983badf3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1930bb049bd448bda43882247657561ab9b91274287fe25a6410350f983badf3", kill_on_drop: false }` [INFO] [stdout] 1930bb049bd448bda43882247657561ab9b91274287fe25a6410350f983badf3