[INFO] cloning repository https://github.com/yuuzao/mytcp [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yuuzao/mytcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuuzao%2Fmytcp", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuuzao%2Fmytcp'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 6d6c9f3ed7c77dfad13f7bd6154929c129262056 [INFO] checking yuuzao/mytcp against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuuzao%2Fmytcp" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/yuuzao/mytcp on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/yuuzao/mytcp [INFO] finished tweaking git repo https://github.com/yuuzao/mytcp [INFO] tweaked toml for git repo https://github.com/yuuzao/mytcp written to /workspace/builds/worker-1/source/Cargo.toml [INFO] crate git repo https://github.com/yuuzao/mytcp already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded etherparse v0.9.0 [INFO] [stderr] Downloaded tun-tap v0.1.2 [INFO] [stderr] Downloaded nix v0.13.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2a994121e96e11b703e22b43132a7b83fec8adb03860e3b0d4206eceefa2de85 [INFO] running `Command { std: "docker" "start" "-a" "2a994121e96e11b703e22b43132a7b83fec8adb03860e3b0d4206eceefa2de85", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2a994121e96e11b703e22b43132a7b83fec8adb03860e3b0d4206eceefa2de85", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2a994121e96e11b703e22b43132a7b83fec8adb03860e3b0d4206eceefa2de85", kill_on_drop: false }` [INFO] [stdout] 2a994121e96e11b703e22b43132a7b83fec8adb03860e3b0d4206eceefa2de85 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e77051a77828f2ee25ca8a5c24038a97957ba75cb31639797d4a007d7fe940f9 [INFO] running `Command { std: "docker" "start" "-a" "e77051a77828f2ee25ca8a5c24038a97957ba75cb31639797d4a007d7fe940f9", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking fnv v1.0.7 [INFO] [stderr] Compiling cc v1.0.67 [INFO] [stderr] Compiling nix v0.13.1 [INFO] [stderr] Checking scoped-tls v0.1.2 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Checking lock_api v0.3.4 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking tokio-sync v0.1.8 [INFO] [stderr] Checking net2 v0.2.37 [INFO] [stderr] Checking smallvec v0.6.14 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking etherparse v0.9.0 [INFO] [stderr] Checking mio v0.6.23 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking tokio-io v0.1.13 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Checking mio-uds v0.6.8 [INFO] [stderr] Compiling tun-tap v0.1.2 [INFO] [stderr] Checking tokio-codec v0.1.2 [INFO] [stderr] Checking tokio-executor v0.1.10 [INFO] [stderr] Checking crossbeam-queue v0.2.3 [INFO] [stderr] Checking tokio-timer v0.2.13 [INFO] [stderr] Checking tokio-current-thread v0.1.7 [INFO] [stderr] Checking crossbeam-deque v0.7.3 [INFO] [stderr] Checking tokio-reactor v0.1.12 [INFO] [stderr] Checking tokio-threadpool v0.1.18 [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 mytcp v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/main.rs:60:5 [INFO] [stdout] | [INFO] [stdout] 18 | / loop { [INFO] [stdout] 19 | | let nbytes = nic.recv(&mut buf[..])?; [INFO] [stdout] 20 | | match etherparse::Ipv4HeaderSlice::from_slice(&buf[..nbytes]) { [INFO] [stdout] 21 | | Ok(iph) => { [INFO] [stdout] ... | [INFO] [stdout] 57 | | } [INFO] [stdout] 58 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 59 | [INFO] [stdout] 60 | 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: `buf` [INFO] [stdout] --> src/tcp.rs:51:17 [INFO] [stdout] | [INFO] [stdout] 51 | let mut 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: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:41:43 [INFO] [stdout] | [INFO] [stdout] 41 | ... Entry::Vacant(mut e) => { [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:51:13 [INFO] [stdout] | [INFO] [stdout] 51 | let mut buf = [0u8; 1500]; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `is_synchronized` [INFO] [stdout] --> src/tcp.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | 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: field is never read: `wnd` [INFO] [stdout] --> src/tcp.rs:31:5 [INFO] [stdout] | [INFO] [stdout] 31 | wnd: u16, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `up` [INFO] [stdout] --> src/tcp.rs:32:5 [INFO] [stdout] | [INFO] [stdout] 32 | up: bool, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `wl1` [INFO] [stdout] --> src/tcp.rs:33:5 [INFO] [stdout] | [INFO] [stdout] 33 | wl1: usize, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `wl2` [INFO] [stdout] --> src/tcp.rs:34:5 [INFO] [stdout] | [INFO] [stdout] 34 | wl2: usize, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `up` [INFO] [stdout] --> src/tcp.rs:41:5 [INFO] [stdout] | [INFO] [stdout] 41 | up: bool, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `irs` [INFO] [stdout] --> src/tcp.rs:42:5 [INFO] [stdout] | [INFO] [stdout] 42 | irs: u32, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `send_rst` [INFO] [stdout] --> src/tcp.rs:145:12 [INFO] [stdout] | [INFO] [stdout] 145 | pub 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:113:9 [INFO] [stdout] | [INFO] [stdout] 113 | / self.ip [INFO] [stdout] 114 | | .set_payload_len(size - self.ip.header_len() as usize); [INFO] [stdout] | |___________________________________________________________________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:123:9 [INFO] [stdout] | [INFO] [stdout] 123 | 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] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:124:9 [INFO] [stdout] | [INFO] [stdout] 124 | self.tcp.write(&mut unwritten); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 15 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/main.rs:60:5 [INFO] [stdout] | [INFO] [stdout] 18 | / loop { [INFO] [stdout] 19 | | let nbytes = nic.recv(&mut buf[..])?; [INFO] [stdout] 20 | | match etherparse::Ipv4HeaderSlice::from_slice(&buf[..nbytes]) { [INFO] [stdout] 21 | | Ok(iph) => { [INFO] [stdout] ... | [INFO] [stdout] 57 | | } [INFO] [stdout] 58 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 59 | [INFO] [stdout] 60 | 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: `buf` [INFO] [stdout] --> src/tcp.rs:51:17 [INFO] [stdout] | [INFO] [stdout] 51 | let mut 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: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:41:43 [INFO] [stdout] | [INFO] [stdout] 41 | ... Entry::Vacant(mut e) => { [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:51:13 [INFO] [stdout] | [INFO] [stdout] 51 | let mut buf = [0u8; 1500]; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `is_synchronized` [INFO] [stdout] --> src/tcp.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | 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: field is never read: `wnd` [INFO] [stdout] --> src/tcp.rs:31:5 [INFO] [stdout] | [INFO] [stdout] 31 | wnd: u16, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `up` [INFO] [stdout] --> src/tcp.rs:32:5 [INFO] [stdout] | [INFO] [stdout] 32 | up: bool, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `wl1` [INFO] [stdout] --> src/tcp.rs:33:5 [INFO] [stdout] | [INFO] [stdout] 33 | wl1: usize, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `wl2` [INFO] [stdout] --> src/tcp.rs:34:5 [INFO] [stdout] | [INFO] [stdout] 34 | wl2: usize, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `up` [INFO] [stdout] --> src/tcp.rs:41:5 [INFO] [stdout] | [INFO] [stdout] 41 | up: bool, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `irs` [INFO] [stdout] --> src/tcp.rs:42:5 [INFO] [stdout] | [INFO] [stdout] 42 | irs: u32, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `send_rst` [INFO] [stdout] --> src/tcp.rs:145:12 [INFO] [stdout] | [INFO] [stdout] 145 | pub 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:113:9 [INFO] [stdout] | [INFO] [stdout] 113 | / self.ip [INFO] [stdout] 114 | | .set_payload_len(size - self.ip.header_len() as usize); [INFO] [stdout] | |___________________________________________________________________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:123:9 [INFO] [stdout] | [INFO] [stdout] 123 | 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] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:124:9 [INFO] [stdout] | [INFO] [stdout] 124 | self.tcp.write(&mut unwritten); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 15 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 12.65s [INFO] running `Command { std: "docker" "inspect" "e77051a77828f2ee25ca8a5c24038a97957ba75cb31639797d4a007d7fe940f9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e77051a77828f2ee25ca8a5c24038a97957ba75cb31639797d4a007d7fe940f9", kill_on_drop: false }` [INFO] [stdout] e77051a77828f2ee25ca8a5c24038a97957ba75cb31639797d4a007d7fe940f9