[INFO] cloning repository https://github.com/jessym/rust-tcp-from-scratch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jessym/rust-tcp-from-scratch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjessym%2Frust-tcp-from-scratch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjessym%2Frust-tcp-from-scratch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cfa5e306a56d24d4936ecffce120256827ec4d68
[INFO] checking jessym/rust-tcp-from-scratch against master#29e035e1728488dce5a03daa527ab1091d1cda47 for pr-149596-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjessym%2Frust-tcp-from-scratch" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jessym/rust-tcp-from-scratch
[INFO] finished tweaking git repo https://github.com/jessym/rust-tcp-from-scratch
[INFO] tweaked toml for git repo https://github.com/jessym/rust-tcp-from-scratch written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jessym/rust-tcp-from-scratch on toolchain 29e035e1728488dce5a03daa527ab1091d1cda47
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+29e035e1728488dce5a03daa527ab1091d1cda47" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jessym/rust-tcp-from-scratch 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" "+29e035e1728488dce5a03daa527ab1091d1cda47" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.150
[INFO] [stderr]   Downloaded hermit-abi v0.3.3
[INFO] [stderr]   Downloaded autocfg v1.1.0
[INFO] [stderr]   Downloaded log v0.4.20
[INFO] [stderr]   Downloaded cc v1.0.83
[INFO] [stderr]   Downloaded etherparse v0.14.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+29e035e1728488dce5a03daa527ab1091d1cda47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed69507ff19a7a2519495ca08551ebfa26cead5bef8d316f782959c9a294d2b1
[INFO] running `Command { std: "docker" "start" "-a" "ed69507ff19a7a2519495ca08551ebfa26cead5bef8d316f782959c9a294d2b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed69507ff19a7a2519495ca08551ebfa26cead5bef8d316f782959c9a294d2b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed69507ff19a7a2519495ca08551ebfa26cead5bef8d316f782959c9a294d2b1", kill_on_drop: false }`
[INFO] [stdout] ed69507ff19a7a2519495ca08551ebfa26cead5bef8d316f782959c9a294d2b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+29e035e1728488dce5a03daa527ab1091d1cda47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f00d7f84bb795cb8e47035fcf8e79c30093450dc6cff0487594bb88fb2f64599
[INFO] running `Command { std: "docker" "start" "-a" "f00d7f84bb795cb8e47035fcf8e79c30093450dc6cff0487594bb88fb2f64599", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking etherparse v0.14.3
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]    Compiling tun-tap v0.1.4
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-core v0.1.18
[INFO] [stderr]     Checking rust-tcp-from-scratch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/tcp.rs:70:21
[INFO] [stdout]    |
[INFO] [stdout] 69 |                     todo!(),
[INFO] [stdout]    |                     ------- any code following this expression is unreachable
[INFO] [stdout] 70 |                     todo!(),
[INFO] [stdout]    |                     ^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]    = note: this warning originates in the macro `todo` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/tcp.rs:78:21
[INFO] [stdout]    |
[INFO] [stdout] 77 |                     todo!(),
[INFO] [stdout]    |                     ------- any code following this expression is unreachable
[INFO] [stdout] 78 |                     IpNumber::TCP,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/tcp.rs:70:21
[INFO] [stdout]    |
[INFO] [stdout] 69 |                     todo!(),
[INFO] [stdout]    |                     ------- any code following this expression is unreachable
[INFO] [stdout] 70 |                     todo!(),
[INFO] [stdout]    |                     ^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]    = note: this warning originates in the macro `todo` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/tcp.rs:78:21
[INFO] [stdout]    |
[INFO] [stdout] 77 |                     todo!(),
[INFO] [stdout]    |                     ------- any code following this expression is unreachable
[INFO] [stdout] 78 |                     IpNumber::TCP,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tcp.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let mut buffer = [0u8; 1500];
[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: `interface`
[INFO] [stdout]   --> src/tcp.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         interface: &Iface,
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interface`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buffer`
[INFO] [stdout]   --> src/tcp.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let mut buffer = [0u8; 1500];
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tcp_response`
[INFO] [stdout]   --> src/tcp.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 let mut tcp_response = TcpHeader::new(
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tcp_response`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tcp.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let mut buffer = [0u8; 1500];
[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: `interface`
[INFO] [stdout]   --> src/tcp.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         interface: &Iface,
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interface`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buffer`
[INFO] [stdout]   --> src/tcp.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let mut buffer = [0u8; 1500];
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tcp_response`
[INFO] [stdout]   --> src/tcp.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 let mut tcp_response = TcpHeader::new(
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tcp_response`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Closed`, `SynRcvd`, and `Estab` are never constructed
[INFO] [stdout]   --> src/tcp.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | enum State {
[INFO] [stdout]    |      ----- variants in this enum
[INFO] [stdout]  7 |     Closed,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]  8 |     Listen,
[INFO] [stdout]  9 |     SynRcvd,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 10 |     Estab,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `State` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (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:7:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | enum State {
[INFO] [stdout]    |      ----- variants in this enum
[INFO] [stdout]  7 |     Closed,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]  8 |     Listen,
[INFO] [stdout]  9 |     SynRcvd,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 10 |     Estab,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `State` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.98s
[INFO] running `Command { std: "docker" "inspect" "f00d7f84bb795cb8e47035fcf8e79c30093450dc6cff0487594bb88fb2f64599", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f00d7f84bb795cb8e47035fcf8e79c30093450dc6cff0487594bb88fb2f64599", kill_on_drop: false }`
[INFO] [stdout] f00d7f84bb795cb8e47035fcf8e79c30093450dc6cff0487594bb88fb2f64599
