[INFO] cloning repository https://github.com/theadell/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/theadell/tcp-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheadell%2Ftcp-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheadell%2Ftcp-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6841fc38fe574a4835464a4c00d589da8be6b578
[INFO] checking theadell/tcp-rust against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheadell%2Ftcp-rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/theadell/tcp-rust
[INFO] finished tweaking git repo https://github.com/theadell/tcp-rust
[INFO] tweaked toml for git repo https://github.com/theadell/tcp-rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/theadell/tcp-rust 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/theadell/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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 93f5db62709b8ee426db8c9b732b1ba2702e2557bd8e71f3ca445dac4af207d2
[INFO] running `Command { std: "docker" "start" "-a" "93f5db62709b8ee426db8c9b732b1ba2702e2557bd8e71f3ca445dac4af207d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93f5db62709b8ee426db8c9b732b1ba2702e2557bd8e71f3ca445dac4af207d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93f5db62709b8ee426db8c9b732b1ba2702e2557bd8e71f3ca445dac4af207d2", kill_on_drop: false }`
[INFO] [stdout] 93f5db62709b8ee426db8c9b732b1ba2702e2557bd8e71f3ca445dac4af207d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 9be397e8ba0950f7a9764c6b09cfe65e42242de2c0a69cc2c8488f2728d7d3ab
[INFO] running `Command { std: "docker" "start" "-a" "9be397e8ba0950f7a9764c6b09cfe65e42242de2c0a69cc2c8488f2728d7d3ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking etherparse v0.8.3
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling cc v1.0.84
[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 getrandom v0.2.11
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking mio v0.6.23
[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-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking tokio-timer v0.2.13
[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-tcp v0.1.4
[INFO] [stderr]     Checking tokio-udp v0.1.6
[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 trust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tcp.rs:43:21
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 let mut ip = etherparse::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:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         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: variant `Closed` is never constructed
[INFO] [stdout]  --> src/tcp.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum State {
[INFO] [stdout]   |          ----- variant in this enum
[INFO] [stdout] 4 |     Closed,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/tcp.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |                     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] 71 |                     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:75:21
[INFO] [stdout]    |
[INFO] [stdout] 75 |                     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] 75 |                     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:43:21
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 let mut ip = etherparse::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:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         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: variant `Closed` is never constructed
[INFO] [stdout]  --> src/tcp.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum State {
[INFO] [stdout]   |          ----- variant in this enum
[INFO] [stdout] 4 |     Closed,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/tcp.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |                     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] 71 |                     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:75:21
[INFO] [stdout]    |
[INFO] [stdout] 75 |                     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] 75 |                     let _ = syn_ack.write(&mut unwritten);
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.46s
[INFO] running `Command { std: "docker" "inspect" "9be397e8ba0950f7a9764c6b09cfe65e42242de2c0a69cc2c8488f2728d7d3ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9be397e8ba0950f7a9764c6b09cfe65e42242de2c0a69cc2c8488f2728d7d3ab", kill_on_drop: false }`
[INFO] [stdout] 9be397e8ba0950f7a9764c6b09cfe65e42242de2c0a69cc2c8488f2728d7d3ab
