[INFO] cloning repository https://github.com/haoweig/trust_learn [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/haoweig/trust_learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaoweig%2Ftrust_learn", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaoweig%2Ftrust_learn'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaoweig%2Ftrust_learn: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 1) [INFO] cloning repository https://github.com/haoweig/trust_learn [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/haoweig/trust_learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaoweig%2Ftrust_learn", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaoweig%2Ftrust_learn'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] feedc9e081f8b54ff3a3cc5651213c5f2ff6fba8 [INFO] checking haoweig/trust_learn against master#b56aaec52bc0fa35591a872fb4aac81f606e265c for pr-122661-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaoweig%2Ftrust_learn" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/haoweig/trust_learn [INFO] finished tweaking git repo https://github.com/haoweig/trust_learn [INFO] tweaked toml for git repo https://github.com/haoweig/trust_learn written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/haoweig/trust_learn on toolchain b56aaec52bc0fa35591a872fb4aac81f606e265c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/haoweig/trust_learn 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" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded etherparse v0.8.3 [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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 81191dcd8d9eb180bc9b979c74d60626ff36b506ba8f17f97732817c48daf99c [INFO] running `Command { std: "docker" "start" "-a" "81191dcd8d9eb180bc9b979c74d60626ff36b506ba8f17f97732817c48daf99c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "81191dcd8d9eb180bc9b979c74d60626ff36b506ba8f17f97732817c48daf99c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "81191dcd8d9eb180bc9b979c74d60626ff36b506ba8f17f97732817c48daf99c", kill_on_drop: false }` [INFO] [stdout] 81191dcd8d9eb180bc9b979c74d60626ff36b506ba8f17f97732817c48daf99c [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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d40004ec53a59a06895733d897c43bcaaa0d762a2b3ab3ba30f28312cdb5a1e9 [INFO] running `Command { std: "docker" "start" "-a" "d40004ec53a59a06895733d897c43bcaaa0d762a2b3ab3ba30f28312cdb5a1e9", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.3.0 [INFO] [stderr] Compiling libc v0.2.155 [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] Checking futures v0.1.31 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Checking scopeguard v1.2.0 [INFO] [stderr] Checking log v0.4.21 [INFO] [stderr] Checking byteorder v1.5.0 [INFO] [stderr] Checking fnv v1.0.7 [INFO] [stderr] Compiling cc v1.0.98 [INFO] [stderr] Checking scoped-tls v0.1.2 [INFO] [stderr] Checking lock_api v0.3.4 [INFO] [stderr] Checking etherparse v0.8.3 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking smallvec v0.6.14 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling slab v0.4.9 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling parking_lot_core v0.6.3 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Checking crossbeam-queue v0.2.3 [INFO] [stderr] Checking crossbeam-deque v0.7.4 [INFO] [stderr] Compiling tun-tap v0.1.4 [INFO] [stderr] Checking tokio-executor v0.1.10 [INFO] [stderr] Checking tokio-sync v0.1.8 [INFO] [stderr] Checking tokio-current-thread v0.1.7 [INFO] [stderr] Checking tokio-timer v0.2.13 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking net2 v0.2.39 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking tokio-threadpool v0.1.18 [INFO] [stderr] Checking mio v0.6.23 [INFO] [stderr] Checking tokio-io v0.1.13 [INFO] [stderr] Checking mio-uds v0.6.8 [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-udp v0.1.6 [INFO] [stderr] Checking tokio-tcp v0.1.4 [INFO] [stderr] Checking tokio-uds v0.2.7 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking tokio-core v0.1.18 [INFO] [stderr] Checking trust2 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> src/tcp.rs:89:17 [INFO] [stdout] | [INFO] [stdout] 89 | Ok(Some((c))) [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 89 - Ok(Some((c))) [INFO] [stdout] 89 + Ok(Some(c)) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> src/tcp.rs:89:17 [INFO] [stdout] | [INFO] [stdout] 89 | Ok(Some((c))) [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 89 - Ok(Some((c))) [INFO] [stdout] 89 + Ok(Some(c)) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/main.rs:68:5 [INFO] [stdout] | [INFO] [stdout] 17 | / loop { [INFO] [stdout] 18 | | let nbytes = nic.recv(&mut buf [..])?; [INFO] [stdout] ... | [INFO] [stdout] 67 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 68 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> src/tcp.rs:38:9 [INFO] [stdout] | [INFO] [stdout] 38 | data: &'a[u8]) -> io::Result> [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/tcp.rs:46:13 [INFO] [stdout] | [INFO] [stdout] 46 | let mut c = Connection { [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.rs:74:13 [INFO] [stdout] | [INFO] [stdout] 74 | let mut ip = etherparse::Ipv4Header::new(syn_ack.header_len(), [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `nic` [INFO] [stdout] --> src/tcp.rs:94:9 [INFO] [stdout] | [INFO] [stdout] 94 | 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:95:9 [INFO] [stdout] | [INFO] [stdout] 95 | 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:96:9 [INFO] [stdout] | [INFO] [stdout] 96 | 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:97:9 [INFO] [stdout] | [INFO] [stdout] 97 | data: &'a[u8]) -> io::Result<()>{ [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:47:43 [INFO] [stdout] | [INFO] [stdout] 47 | ... Entry::Vacant(mut e)=>{ [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Closed` and `Listen` 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] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `una`, `nxt`, `up`, `wl1`, and `wl2` are never read [INFO] [stdout] --> src/tcp.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 10 | struct SendSequenceSpace { [INFO] [stdout] | ----------------- fields in this struct [INFO] [stdout] 11 | una: u32, [INFO] [stdout] | ^^^ [INFO] [stdout] 12 | nxt: u32, [INFO] [stdout] | ^^^ [INFO] [stdout] 13 | wnd: u16, [INFO] [stdout] 14 | up: bool, [INFO] [stdout] | ^^ [INFO] [stdout] 15 | wl1:usize, [INFO] [stdout] | ^^^ [INFO] [stdout] 16 | wl2:usize, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `wnd`, `up`, and `irs` are never read [INFO] [stdout] --> src/tcp.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 20 | struct RecvSequenceSpace { [INFO] [stdout] | ----------------- fields in this struct [INFO] [stdout] 21 | nxt: u32, [INFO] [stdout] 22 | wnd: u16, [INFO] [stdout] | ^^^ [INFO] [stdout] 23 | up:bool, [INFO] [stdout] | ^^ [INFO] [stdout] 24 | irs: u32, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `state` is never read [INFO] [stdout] --> src/tcp.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 27 | pub struct Connection { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 28 | state: State, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:83:13 [INFO] [stdout] | [INFO] [stdout] 83 | ip.write(&mut unwriten); [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] 83 | let _ = ip.write(&mut unwriten); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:84:13 [INFO] [stdout] | [INFO] [stdout] 84 | syn_ack.write(&mut unwriten); [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] 84 | let _ = syn_ack.write(&mut unwriten); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/main.rs:68:5 [INFO] [stdout] | [INFO] [stdout] 17 | / loop { [INFO] [stdout] 18 | | let nbytes = nic.recv(&mut buf [..])?; [INFO] [stdout] ... | [INFO] [stdout] 67 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 68 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> src/tcp.rs:38:9 [INFO] [stdout] | [INFO] [stdout] 38 | data: &'a[u8]) -> io::Result> [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/tcp.rs:46:13 [INFO] [stdout] | [INFO] [stdout] 46 | let mut c = Connection { [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.rs:74:13 [INFO] [stdout] | [INFO] [stdout] 74 | let mut ip = etherparse::Ipv4Header::new(syn_ack.header_len(), [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `nic` [INFO] [stdout] --> src/tcp.rs:94:9 [INFO] [stdout] | [INFO] [stdout] 94 | 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:95:9 [INFO] [stdout] | [INFO] [stdout] 95 | 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:96:9 [INFO] [stdout] | [INFO] [stdout] 96 | 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:97:9 [INFO] [stdout] | [INFO] [stdout] 97 | data: &'a[u8]) -> io::Result<()>{ [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:47:43 [INFO] [stdout] | [INFO] [stdout] 47 | ... Entry::Vacant(mut e)=>{ [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Closed` and `Listen` 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] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `una`, `nxt`, `up`, `wl1`, and `wl2` are never read [INFO] [stdout] --> src/tcp.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 10 | struct SendSequenceSpace { [INFO] [stdout] | ----------------- fields in this struct [INFO] [stdout] 11 | una: u32, [INFO] [stdout] | ^^^ [INFO] [stdout] 12 | nxt: u32, [INFO] [stdout] | ^^^ [INFO] [stdout] 13 | wnd: u16, [INFO] [stdout] 14 | up: bool, [INFO] [stdout] | ^^ [INFO] [stdout] 15 | wl1:usize, [INFO] [stdout] | ^^^ [INFO] [stdout] 16 | wl2:usize, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `wnd`, `up`, and `irs` are never read [INFO] [stdout] --> src/tcp.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 20 | struct RecvSequenceSpace { [INFO] [stdout] | ----------------- fields in this struct [INFO] [stdout] 21 | nxt: u32, [INFO] [stdout] 22 | wnd: u16, [INFO] [stdout] | ^^^ [INFO] [stdout] 23 | up:bool, [INFO] [stdout] | ^^ [INFO] [stdout] 24 | irs: u32, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `state` is never read [INFO] [stdout] --> src/tcp.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 27 | pub struct Connection { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 28 | state: State, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:83:13 [INFO] [stdout] | [INFO] [stdout] 83 | ip.write(&mut unwriten); [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] 83 | let _ = ip.write(&mut unwriten); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:84:13 [INFO] [stdout] | [INFO] [stdout] 84 | syn_ack.write(&mut unwriten); [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] 84 | let _ = syn_ack.write(&mut unwriten); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.93s [INFO] running `Command { std: "docker" "inspect" "d40004ec53a59a06895733d897c43bcaaa0d762a2b3ab3ba30f28312cdb5a1e9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d40004ec53a59a06895733d897c43bcaaa0d762a2b3ab3ba30f28312cdb5a1e9", kill_on_drop: false }` [INFO] [stdout] d40004ec53a59a06895733d897c43bcaaa0d762a2b3ab3ba30f28312cdb5a1e9