[INFO] cloning repository https://github.com/Stone749990226/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/Stone749990226/rust-tcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStone749990226%2Frust-tcp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStone749990226%2Frust-tcp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ea5f83da27521fc243ce848e66ab51b423838e5c
[INFO] checking Stone749990226/rust-tcp against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStone749990226%2Frust-tcp" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Stone749990226/rust-tcp
[INFO] finished tweaking git repo https://github.com/Stone749990226/rust-tcp
[INFO] tweaked toml for git repo https://github.com/Stone749990226/rust-tcp written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Stone749990226/rust-tcp on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Stone749990226/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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2c6b799955d9ebba0c6d6f21ce615c8d3121f4cc424b78b50b98ab2017ed2c9
[INFO] running `Command { std: "docker" "start" "-a" "b2c6b799955d9ebba0c6d6f21ce615c8d3121f4cc424b78b50b98ab2017ed2c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2c6b799955d9ebba0c6d6f21ce615c8d3121f4cc424b78b50b98ab2017ed2c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2c6b799955d9ebba0c6d6f21ce615c8d3121f4cc424b78b50b98ab2017ed2c9", kill_on_drop: false }`
[INFO] [stdout] b2c6b799955d9ebba0c6d6f21ce615c8d3121f4cc424b78b50b98ab2017ed2c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a67b188a2c4812600a7a0d05a04c4aa167b1ede2c302d12e74826394a65eeeb
[INFO] running `Command { std: "docker" "start" "-a" "6a67b188a2c4812600a7a0d05a04c4aa167b1ede2c302d12e74826394a65eeeb", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]    Compiling cc v1.2.25
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking arrayvec v0.7.6
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking etherparse v0.18.0
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]    Compiling tun-tap v0.1.4
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[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 rust-tcp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/tcp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (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:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |         let mut ip = Ipv4Header::new(
[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: unused variable: `data`
[INFO] [stdout]   --> src/tcp.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |         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:157:9
[INFO] [stdout]     |
[INFO] [stdout] 157 |         nic: &Iface,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_nic`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_hdr`
[INFO] [stdout]    --> src/tcp.rs:158:9
[INFO] [stdout]     |
[INFO] [stdout] 158 |         ip_hdr: Ipv4HeaderSlice,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_hdr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tcp_hdr`
[INFO] [stdout]    --> src/tcp.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 159 |         tcp_hdr: TcpHeaderSlice,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tcp_hdr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/tcp.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 160 |         data: &'a [u8],
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Closed` and `Listen` are never constructed
[INFO] [stdout]  --> src/tcp.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum State {
[INFO] [stdout]   |          ----- variants in this enum
[INFO] [stdout] 5 |     Closed,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 6 |     Listen,
[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:39:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct SendSequenceSpace {
[INFO] [stdout]    |        ----------------- fields in this struct
[INFO] [stdout] 38 |     /// send unacknowledged
[INFO] [stdout] 39 |     una: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 40 |     /// send next
[INFO] [stdout] 41 |     nxt: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     up: bool,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 46 |     /// segment sequence number used for last window update
[INFO] [stdout] 47 |     wl1: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 48 |     /// segment acknowledgment number used for last window update
[INFO] [stdout] 49 |     wl2: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `wnd`, `up`, and `irs` are never read
[INFO] [stdout]   --> src/tcp.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 71 | struct RecvSequenceSpace {
[INFO] [stdout]    |        ----------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 75 |     wnd: u16,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 76 |     /// receive urgent pointer
[INFO] [stdout] 77 |     up: bool,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 78 |     /// initial receive sequence number
[INFO] [stdout] 79 |     irs: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/tcp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (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:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |         let mut ip = Ipv4Header::new(
[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: unused variable: `data`
[INFO] [stdout]   --> src/tcp.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |         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:157:9
[INFO] [stdout]     |
[INFO] [stdout] 157 |         nic: &Iface,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_nic`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_hdr`
[INFO] [stdout]    --> src/tcp.rs:158:9
[INFO] [stdout]     |
[INFO] [stdout] 158 |         ip_hdr: Ipv4HeaderSlice,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_hdr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tcp_hdr`
[INFO] [stdout]    --> src/tcp.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 159 |         tcp_hdr: TcpHeaderSlice,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tcp_hdr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/tcp.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 160 |         data: &'a [u8],
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Closed` and `Listen` are never constructed
[INFO] [stdout]  --> src/tcp.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum State {
[INFO] [stdout]   |          ----- variants in this enum
[INFO] [stdout] 5 |     Closed,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 6 |     Listen,
[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:39:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct SendSequenceSpace {
[INFO] [stdout]    |        ----------------- fields in this struct
[INFO] [stdout] 38 |     /// send unacknowledged
[INFO] [stdout] 39 |     una: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 40 |     /// send next
[INFO] [stdout] 41 |     nxt: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     up: bool,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 46 |     /// segment sequence number used for last window update
[INFO] [stdout] 47 |     wl1: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 48 |     /// segment acknowledgment number used for last window update
[INFO] [stdout] 49 |     wl2: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `wnd`, `up`, and `irs` are never read
[INFO] [stdout]   --> src/tcp.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 71 | struct RecvSequenceSpace {
[INFO] [stdout]    |        ----------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 75 |     wnd: u16,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 76 |     /// receive urgent pointer
[INFO] [stdout] 77 |     up: bool,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 78 |     /// initial receive sequence number
[INFO] [stdout] 79 |     irs: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.06s
[INFO] running `Command { std: "docker" "inspect" "6a67b188a2c4812600a7a0d05a04c4aa167b1ede2c302d12e74826394a65eeeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a67b188a2c4812600a7a0d05a04c4aa167b1ede2c302d12e74826394a65eeeb", kill_on_drop: false }`
[INFO] [stdout] 6a67b188a2c4812600a7a0d05a04c4aa167b1ede2c302d12e74826394a65eeeb
