[INFO] cloning repository https://github.com/Lovenson2000/tcp-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lovenson2000/tcp-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLovenson2000%2Ftcp-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLovenson2000%2Ftcp-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5229f9f2c8a02352cf2788523f45ae7d47e43134 [INFO] checking Lovenson2000/tcp-rust against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLovenson2000%2Ftcp-rust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Lovenson2000/tcp-rust [INFO] finished tweaking git repo https://github.com/Lovenson2000/tcp-rust [INFO] tweaked toml for git repo https://github.com/Lovenson2000/tcp-rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Lovenson2000/tcp-rust on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Lovenson2000/tcp-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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded crossbeam-deque v0.7.4 [INFO] [stderr] Downloaded tun-tap v0.1.2 [INFO] [stderr] Downloaded tokio-fs v0.1.7 [INFO] [stderr] Downloaded tokio-uds v0.2.7 [INFO] [stderr] Downloaded memoffset v0.5.6 [INFO] [stderr] Downloaded scoped-tls v0.1.2 [INFO] [stderr] Downloaded parking_lot_core v0.6.3 [INFO] [stderr] Downloaded tokio-threadpool v0.1.18 [INFO] [stderr] Downloaded tokio v0.1.22 [INFO] [stderr] Downloaded tokio-core v0.1.18 [INFO] [stderr] Downloaded etherparse v0.8.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7b7c3d237089d998a6c783745a9270a794557d55aa973ad3fe35f9e7df9571cc [INFO] running `Command { std: "docker" "start" "-a" "7b7c3d237089d998a6c783745a9270a794557d55aa973ad3fe35f9e7df9571cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7b7c3d237089d998a6c783745a9270a794557d55aa973ad3fe35f9e7df9571cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7b7c3d237089d998a6c783745a9270a794557d55aa973ad3fe35f9e7df9571cc", kill_on_drop: false }` [INFO] [stdout] 7b7c3d237089d998a6c783745a9270a794557d55aa973ad3fe35f9e7df9571cc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f78a018b240a4fc2a0056c5429b14d9c5e4b76ed8fc20ebd2a4c59cd98dead00 [INFO] running `Command { std: "docker" "start" "-a" "f78a018b240a4fc2a0056c5429b14d9c5e4b76ed8fc20ebd2a4c59cd98dead00", kill_on_drop: false }` [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Checking futures v0.1.31 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling slab v0.4.9 [INFO] [stderr] Compiling libc v0.2.168 [INFO] [stderr] Checking scopeguard v1.2.0 [INFO] [stderr] Checking log v0.4.22 [INFO] [stderr] Checking byteorder v1.5.0 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Checking lock_api v0.3.4 [INFO] [stderr] Checking smallvec v0.6.14 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling cc v1.2.3 [INFO] [stderr] Checking scoped-tls v0.1.2 [INFO] [stderr] Checking etherparse v0.8.3 [INFO] [stderr] Checking crossbeam-queue v0.2.3 [INFO] [stderr] Compiling parking_lot_core v0.6.3 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking net2 v0.2.39 [INFO] [stderr] Checking crossbeam-deque v0.7.4 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking mio v0.6.23 [INFO] [stderr] Checking tokio-executor v0.1.10 [INFO] [stderr] Checking tokio-sync v0.1.8 [INFO] [stderr] Checking tokio-threadpool v0.1.18 [INFO] [stderr] Checking tokio-timer v0.2.13 [INFO] [stderr] Checking tokio-current-thread v0.1.7 [INFO] [stderr] Checking tokio-io v0.1.13 [INFO] [stderr] Checking mio-uds v0.6.8 [INFO] [stderr] Compiling tun-tap v0.1.2 [INFO] [stderr] Checking tokio-reactor v0.1.12 [INFO] [stderr] Checking tokio-codec v0.1.2 [INFO] [stderr] Checking tokio-fs v0.1.7 [INFO] [stderr] Checking tokio-uds v0.2.7 [INFO] [stderr] Checking tokio-udp v0.1.6 [INFO] [stderr] Checking tokio-tcp v0.1.4 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking tokio-core v0.1.18 [INFO] [stderr] Checking tcp-imple v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/tcp.rs:77:13 [INFO] [stdout] | [INFO] [stdout] 77 | let mut connecion = Connection { [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/tcp.rs:102:15 [INFO] [stdout] | [INFO] [stdout] 102 | let mut ip = etherparse::Ipv4Header::new( [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> src/tcp.rs:68:9 [INFO] [stdout] | [INFO] [stdout] 68 | data: &'a [u8], [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `nic` [INFO] [stdout] --> src/tcp.rs:140:9 [INFO] [stdout] | [INFO] [stdout] 140 | nic: &mut tun_tap::Iface, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_nic` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `iph` [INFO] [stdout] --> src/tcp.rs:141:9 [INFO] [stdout] | [INFO] [stdout] 141 | 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: `tcph` [INFO] [stdout] --> src/tcp.rs:142:9 [INFO] [stdout] | [INFO] [stdout] 142 | tcph: etherparse::TcpHeaderSlice<'a>, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_tcph` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> src/tcp.rs:143:9 [INFO] [stdout] | [INFO] [stdout] 143 | data: &'a [u8], [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:48:43 [INFO] [stdout] | [INFO] [stdout] 48 | ... Entry::Vacant(mut e) => { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Closed`, `Listen`, and `Estab` are never constructed [INFO] [stdout] --> src/tcp.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 3 | pub enum State { [INFO] [stdout] | ----- variants in this enum [INFO] [stdout] 4 | Closed, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 5 | Listen, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 6 | SynRcvd, [INFO] [stdout] 7 | Estab, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `state` is never read [INFO] [stdout] --> src/tcp.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 10 | pub struct Connection { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 11 | state: State, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `una`, `nxt`, `up`, `wl1`, and `wl2` are never read [INFO] [stdout] --> src/tcp.rs:32:5 [INFO] [stdout] | [INFO] [stdout] 31 | struct SendSequenceSpace { [INFO] [stdout] | ----------------- fields in this struct [INFO] [stdout] 32 | una: u32, // send unacknowledged [INFO] [stdout] | ^^^ [INFO] [stdout] 33 | nxt: u32, // send next [INFO] [stdout] | ^^^ [INFO] [stdout] 34 | wnd: u16, // send window [INFO] [stdout] 35 | up: bool, // send urgent pointer [INFO] [stdout] | ^^ [INFO] [stdout] 36 | wl1: usize, // send segment sequence number used for last window update [INFO] [stdout] | ^^^ [INFO] [stdout] 37 | wl2: usize, // send segment acknowledgment number used for last window [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `wnd`, `up`, and `irs` are never read [INFO] [stdout] --> src/tcp.rs:56:5 [INFO] [stdout] | [INFO] [stdout] 54 | struct ReceiveSequenceSpace { [INFO] [stdout] | -------------------- fields in this struct [INFO] [stdout] 55 | nxt: u32, // receive next [INFO] [stdout] 56 | wnd: u16, // receive window [INFO] [stdout] | ^^^ [INFO] [stdout] 57 | up: bool, // receive urgent pointer [INFO] [stdout] | ^^ [INFO] [stdout] 58 | irs: u32, // receive initial receive sequence number [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:127:15 [INFO] [stdout] | [INFO] [stdout] 127 | ip.write(&mut unwritten); [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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 127 | let _ = ip.write(&mut unwritten); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:128:15 [INFO] [stdout] | [INFO] [stdout] 128 | syn_ack.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] 128 | let _ = syn_ack.write(&mut unwritten); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/tcp.rs:77:13 [INFO] [stdout] | [INFO] [stdout] 77 | let mut connecion = Connection { [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/tcp.rs:102:15 [INFO] [stdout] | [INFO] [stdout] 102 | let mut ip = etherparse::Ipv4Header::new( [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> src/tcp.rs:68:9 [INFO] [stdout] | [INFO] [stdout] 68 | data: &'a [u8], [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `nic` [INFO] [stdout] --> src/tcp.rs:140:9 [INFO] [stdout] | [INFO] [stdout] 140 | nic: &mut tun_tap::Iface, [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_nic` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `iph` [INFO] [stdout] --> src/tcp.rs:141:9 [INFO] [stdout] | [INFO] [stdout] 141 | 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: `tcph` [INFO] [stdout] --> src/tcp.rs:142:9 [INFO] [stdout] | [INFO] [stdout] 142 | tcph: etherparse::TcpHeaderSlice<'a>, [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_tcph` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> src/tcp.rs:143:9 [INFO] [stdout] | [INFO] [stdout] 143 | data: &'a [u8], [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:48:43 [INFO] [stdout] | [INFO] [stdout] 48 | ... Entry::Vacant(mut e) => { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Closed`, `Listen`, and `Estab` are never constructed [INFO] [stdout] --> src/tcp.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 3 | pub enum State { [INFO] [stdout] | ----- variants in this enum [INFO] [stdout] 4 | Closed, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 5 | Listen, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 6 | SynRcvd, [INFO] [stdout] 7 | Estab, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `state` is never read [INFO] [stdout] --> src/tcp.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 10 | pub struct Connection { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 11 | state: State, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `una`, `nxt`, `up`, `wl1`, and `wl2` are never read [INFO] [stdout] --> src/tcp.rs:32:5 [INFO] [stdout] | [INFO] [stdout] 31 | struct SendSequenceSpace { [INFO] [stdout] | ----------------- fields in this struct [INFO] [stdout] 32 | una: u32, // send unacknowledged [INFO] [stdout] | ^^^ [INFO] [stdout] 33 | nxt: u32, // send next [INFO] [stdout] | ^^^ [INFO] [stdout] 34 | wnd: u16, // send window [INFO] [stdout] 35 | up: bool, // send urgent pointer [INFO] [stdout] | ^^ [INFO] [stdout] 36 | wl1: usize, // send segment sequence number used for last window update [INFO] [stdout] | ^^^ [INFO] [stdout] 37 | wl2: usize, // send segment acknowledgment number used for last window [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `wnd`, `up`, and `irs` are never read [INFO] [stdout] --> src/tcp.rs:56:5 [INFO] [stdout] | [INFO] [stdout] 54 | struct ReceiveSequenceSpace { [INFO] [stdout] | -------------------- fields in this struct [INFO] [stdout] 55 | nxt: u32, // receive next [INFO] [stdout] 56 | wnd: u16, // receive window [INFO] [stdout] | ^^^ [INFO] [stdout] 57 | up: bool, // receive urgent pointer [INFO] [stdout] | ^^ [INFO] [stdout] 58 | irs: u32, // receive initial receive sequence number [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:127:15 [INFO] [stdout] | [INFO] [stdout] 127 | ip.write(&mut unwritten); [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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 127 | let _ = ip.write(&mut unwritten); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:128:15 [INFO] [stdout] | [INFO] [stdout] 128 | syn_ack.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] 128 | let _ = syn_ack.write(&mut unwritten); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.63s [INFO] running `Command { std: "docker" "inspect" "f78a018b240a4fc2a0056c5429b14d9c5e4b76ed8fc20ebd2a4c59cd98dead00", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f78a018b240a4fc2a0056c5429b14d9c5e4b76ed8fc20ebd2a4c59cd98dead00", kill_on_drop: false }` [INFO] [stdout] f78a018b240a4fc2a0056c5429b14d9c5e4b76ed8fc20ebd2a4c59cd98dead00