[INFO] cloning repository https://github.com/thorbenbelow/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/thorbenbelow/rust-tcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthorbenbelow%2Frust-tcp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthorbenbelow%2Frust-tcp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f338e449b391d4cc7c94c9507d6695b485347628
[INFO] checking thorbenbelow/rust-tcp against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthorbenbelow%2Frust-tcp" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/thorbenbelow/rust-tcp
[INFO] finished tweaking git repo https://github.com/thorbenbelow/rust-tcp
[INFO] tweaked toml for git repo https://github.com/thorbenbelow/rust-tcp written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/thorbenbelow/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/thorbenbelow/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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 9eca63a2b860fff0230f3934ff7867134ceac15a2a634c65ca0c604723dd1048
[INFO] running `Command { std: "docker" "start" "-a" "9eca63a2b860fff0230f3934ff7867134ceac15a2a634c65ca0c604723dd1048", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9eca63a2b860fff0230f3934ff7867134ceac15a2a634c65ca0c604723dd1048", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9eca63a2b860fff0230f3934ff7867134ceac15a2a634c65ca0c604723dd1048", kill_on_drop: false }`
[INFO] [stdout] 9eca63a2b860fff0230f3934ff7867134ceac15a2a634c65ca0c604723dd1048
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 48dca066cd29f738fba6580cdbde8c2b6462f77c2235bb30f4e2b886a147c342
[INFO] running `Command { std: "docker" "start" "-a" "48dca066cd29f738fba6580cdbde8c2b6462f77c2235bb30f4e2b886a147c342", kill_on_drop: false }`
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]     Checking num_cpus v1.14.0
[INFO] [stderr]     Checking net2 v0.2.38
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]    Compiling cc v1.0.76
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking etherparse v0.8.3
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]    Compiling tun-tap v0.1.3
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-udp v0.1.6
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:104:21
[INFO] [stdout]     |
[INFO] [stdout] 104 |                 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: variants `Closed`, `SynRcvd`, and `Estab` are never constructed
[INFO] [stdout]  --> src/tcp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum State {
[INFO] [stdout]   |      ----- variants in this enum
[INFO] [stdout] 2 |     Closed,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 3 |     Listen,
[INFO] [stdout] 4 |     SynRcvd,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 5 |     Estab,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `up`, `wl1`, and `wl2` are never read
[INFO] [stdout]   --> src/tcp.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | struct SendSequenceSpace {
[INFO] [stdout]    |        ----------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 16 |     up: bool,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 17 |     /// segment sequence number used for last window update,
[INFO] [stdout] 18 |     wl1: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 19 |     /// segment acknowledgement number used for last window update,
[INFO] [stdout] 20 |     wl2: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `up` is never read
[INFO] [stdout]   --> src/tcp.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct RecvSequenceSpace {
[INFO] [stdout]    |        ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 32 |     up: bool,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:124:21
[INFO] [stdout]     |
[INFO] [stdout] 124 |                     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] 124 |                     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:125:21
[INFO] [stdout]     |
[INFO] [stdout] 125 |                     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] 125 |                     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:104:21
[INFO] [stdout]     |
[INFO] [stdout] 104 |                 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: variants `Closed`, `SynRcvd`, and `Estab` are never constructed
[INFO] [stdout]  --> src/tcp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum State {
[INFO] [stdout]   |      ----- variants in this enum
[INFO] [stdout] 2 |     Closed,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 3 |     Listen,
[INFO] [stdout] 4 |     SynRcvd,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 5 |     Estab,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `up`, `wl1`, and `wl2` are never read
[INFO] [stdout]   --> src/tcp.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | struct SendSequenceSpace {
[INFO] [stdout]    |        ----------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 16 |     up: bool,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 17 |     /// segment sequence number used for last window update,
[INFO] [stdout] 18 |     wl1: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 19 |     /// segment acknowledgement number used for last window update,
[INFO] [stdout] 20 |     wl2: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `up` is never read
[INFO] [stdout]   --> src/tcp.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct RecvSequenceSpace {
[INFO] [stdout]    |        ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 32 |     up: bool,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:124:21
[INFO] [stdout]     |
[INFO] [stdout] 124 |                     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] 124 |                     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:125:21
[INFO] [stdout]     |
[INFO] [stdout] 125 |                     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] 125 |                     let _ = syn_ack.write(&mut unwritten);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.82s
[INFO] running `Command { std: "docker" "inspect" "48dca066cd29f738fba6580cdbde8c2b6462f77c2235bb30f4e2b886a147c342", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48dca066cd29f738fba6580cdbde8c2b6462f77c2235bb30f4e2b886a147c342", kill_on_drop: false }`
[INFO] [stdout] 48dca066cd29f738fba6580cdbde8c2b6462f77c2235bb30f4e2b886a147c342
