[INFO] cloning repository https://github.com/justinliew/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/justinliew/tcp_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustinliew%2Ftcp_rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustinliew%2Ftcp_rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c32305b948952348e2605f55ea282faffbea18bc [INFO] checking justinliew/tcp_rust against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustinliew%2Ftcp_rust" "/workspace/builds/worker-14/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/justinliew/tcp_rust 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/justinliew/tcp_rust [INFO] finished tweaking git repo https://github.com/justinliew/tcp_rust [INFO] tweaked toml for git repo https://github.com/justinliew/tcp_rust written to /workspace/builds/worker-14/source/Cargo.toml [INFO] crate git repo https://github.com/justinliew/tcp_rust 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] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded cc v1.0.32 [INFO] [stderr] Downloaded etherparse v0.8.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 1d45afaf8700eabe09b40596212695c57c9b9ced7e61e17ea769aced1247bb8f [INFO] running `Command { std: "docker" "start" "-a" "1d45afaf8700eabe09b40596212695c57c9b9ced7e61e17ea769aced1247bb8f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1d45afaf8700eabe09b40596212695c57c9b9ced7e61e17ea769aced1247bb8f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1d45afaf8700eabe09b40596212695c57c9b9ced7e61e17ea769aced1247bb8f", kill_on_drop: false }` [INFO] [stdout] 1d45afaf8700eabe09b40596212695c57c9b9ced7e61e17ea769aced1247bb8f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 1fbdfe8c8cabc26dcc81c0bd2855673e4504768b5e3f5423db61a1ac40c754e5 [INFO] running `Command { std: "docker" "start" "-a" "1fbdfe8c8cabc26dcc81c0bd2855673e4504768b5e3f5423db61a1ac40c754e5", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.50 [INFO] [stderr] Checking cfg-if v0.1.7 [INFO] [stderr] Checking rand_core v0.4.0 [INFO] [stderr] Compiling autocfg v0.1.2 [INFO] [stderr] Checking lazy_static v1.3.0 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking stable_deref_trait v1.1.1 [INFO] [stderr] Compiling arrayvec v0.4.10 [INFO] [stderr] Checking smallvec v0.6.9 [INFO] [stderr] Checking lazycell v1.2.1 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Checking nodrop v0.1.13 [INFO] [stderr] Checking memoffset v0.2.1 [INFO] [stderr] Compiling cc v1.0.32 [INFO] [stderr] Checking scoped-tls v0.1.2 [INFO] [stderr] Checking etherparse v0.8.3 [INFO] [stderr] Checking tokio-trace-core v0.1.0 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_jitter v0.1.3 [INFO] [stderr] Checking owning_ref v0.4.0 [INFO] [stderr] Checking crossbeam-utils v0.6.5 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking tokio-sync v0.1.4 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking lock_api v0.1.5 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking tokio-executor v0.1.7 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking tokio-current-thread v0.1.6 [INFO] [stderr] Checking tokio-timer v0.2.10 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Checking crossbeam-epoch v0.7.1 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking num_cpus v1.10.0 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Compiling tun-tap v0.1.2 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking mio v0.6.16 [INFO] [stderr] Checking tokio-io v0.1.12 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking tokio-codec v0.1.1 [INFO] [stderr] Checking tokio-threadpool v0.1.13 [INFO] [stderr] Checking parking_lot v0.7.1 [INFO] [stderr] Checking tokio-reactor v0.1.9 [INFO] [stderr] Checking tokio-fs v0.1.6 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking tokio-udp v0.1.3 [INFO] [stderr] Checking tokio-uds v0.2.5 [INFO] [stderr] Checking tokio v0.1.18 [INFO] [stderr] Checking tokio-core v0.1.17 [INFO] [stderr] Checking tcp_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Ord` is imported redundantly [INFO] [stdout] --> src/tcp.rs:139:24 [INFO] [stdout] | [INFO] [stdout] 139 | use std::cmp::{Ord,Ordering}; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/tcp.rs:145:17 [INFO] [stdout] | [INFO] [stdout] 145 | (start < x && x < end) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/tcp.rs:148:17 [INFO] [stdout] | [INFO] [stdout] 148 | (x > start || x < end) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Ord` is imported redundantly [INFO] [stdout] --> src/tcp.rs:139:24 [INFO] [stdout] | [INFO] [stdout] 139 | use std::cmp::{Ord,Ordering}; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/tcp.rs:145:17 [INFO] [stdout] | [INFO] [stdout] 145 | (start < x && x < end) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/tcp.rs:148:17 [INFO] [stdout] | [INFO] [stdout] 148 | (x > start || x < end) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/main.rs:58:17 [INFO] [stdout] | [INFO] [stdout] 58 | Err(e) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `nic` [INFO] [stdout] --> src/tcp.rs:155:9 [INFO] [stdout] | [INFO] [stdout] 155 | 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:156:9 [INFO] [stdout] | [INFO] [stdout] 156 | 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/main.rs:45:43 [INFO] [stdout] | [INFO] [stdout] 45 | ... 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: unused variable: `e` [INFO] [stdout] --> src/main.rs:58:17 [INFO] [stdout] | [INFO] [stdout] 58 | Err(e) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `nic` [INFO] [stdout] --> src/tcp.rs:155:9 [INFO] [stdout] | [INFO] [stdout] 155 | 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:156:9 [INFO] [stdout] | [INFO] [stdout] 156 | 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/main.rs:45:43 [INFO] [stdout] | [INFO] [stdout] 45 | ... 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: variant is never constructed: `Estab` [INFO] [stdout] --> src/tcp.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | Estab, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `up` [INFO] [stdout] --> src/tcp.rs:43:5 [INFO] [stdout] | [INFO] [stdout] 43 | up: bool, // send urgent pointer [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `wl1` [INFO] [stdout] --> src/tcp.rs:44:5 [INFO] [stdout] | [INFO] [stdout] 44 | wl1: u32, // segment sequence number used for last window update [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `wl2` [INFO] [stdout] --> src/tcp.rs:45:5 [INFO] [stdout] | [INFO] [stdout] 45 | wl2: u32, // segment acknowledgement number used for last window update [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `up` [INFO] [stdout] --> src/tcp.rs:66:5 [INFO] [stdout] | [INFO] [stdout] 66 | up: bool, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `irs` [INFO] [stdout] --> src/tcp.rs:67:5 [INFO] [stdout] | [INFO] [stdout] 67 | irs: u32, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:126:9 [INFO] [stdout] | [INFO] [stdout] 126 | c.ip.set_payload_len(syn_ack.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:130:13 [INFO] [stdout] | [INFO] [stdout] 130 | c.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:131:13 [INFO] [stdout] | [INFO] [stdout] 131 | 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] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:134:9 [INFO] [stdout] | [INFO] [stdout] 134 | nic.send(&buf[..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: 17 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Estab` [INFO] [stdout] --> src/tcp.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | Estab, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `up` [INFO] [stdout] --> src/tcp.rs:43:5 [INFO] [stdout] | [INFO] [stdout] 43 | up: bool, // send urgent pointer [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `wl1` [INFO] [stdout] --> src/tcp.rs:44:5 [INFO] [stdout] | [INFO] [stdout] 44 | wl1: u32, // segment sequence number used for last window update [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `wl2` [INFO] [stdout] --> src/tcp.rs:45:5 [INFO] [stdout] | [INFO] [stdout] 45 | wl2: u32, // segment acknowledgement number used for last window update [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `up` [INFO] [stdout] --> src/tcp.rs:66:5 [INFO] [stdout] | [INFO] [stdout] 66 | up: bool, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `irs` [INFO] [stdout] --> src/tcp.rs:67:5 [INFO] [stdout] | [INFO] [stdout] 67 | irs: u32, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:126:9 [INFO] [stdout] | [INFO] [stdout] 126 | c.ip.set_payload_len(syn_ack.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:130:13 [INFO] [stdout] | [INFO] [stdout] 130 | c.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:131:13 [INFO] [stdout] | [INFO] [stdout] 131 | 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] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tcp.rs:134:9 [INFO] [stdout] | [INFO] [stdout] 134 | nic.send(&buf[..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: 17 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 5.86s [INFO] running `Command { std: "docker" "inspect" "1fbdfe8c8cabc26dcc81c0bd2855673e4504768b5e3f5423db61a1ac40c754e5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1fbdfe8c8cabc26dcc81c0bd2855673e4504768b5e3f5423db61a1ac40c754e5", kill_on_drop: false }` [INFO] [stdout] 1fbdfe8c8cabc26dcc81c0bd2855673e4504768b5e3f5423db61a1ac40c754e5