[INFO] cloning repository https://github.com/Shourya742/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/Shourya742/tcp_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShourya742%2Ftcp_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShourya742%2Ftcp_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 363e5e9b99607c3701ad902550aadd86255a6446
[INFO] checking Shourya742/tcp_rust against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShourya742%2Ftcp_rust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Shourya742/tcp_rust
[INFO] finished tweaking git repo https://github.com/Shourya742/tcp_rust
[INFO] tweaked toml for git repo https://github.com/Shourya742/tcp_rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Shourya742/tcp_rust on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Shourya742/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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parking_lot_core v0.6.3
[INFO] [stderr]   Downloaded tun-tap v0.1.4
[INFO] [stderr]   Downloaded scoped-tls v0.1.2
[INFO] [stderr]   Downloaded tokio-core v0.1.18
[INFO] [stderr]   Downloaded etherparse v0.16.0
[INFO] [stderr]   Downloaded cc v1.1.30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d455fdcd1945d5801eee36e8d1a12e105f1a55c2d19b07f06430b2a1082577d8
[INFO] running `Command { std: "docker" "start" "-a" "d455fdcd1945d5801eee36e8d1a12e105f1a55c2d19b07f06430b2a1082577d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d455fdcd1945d5801eee36e8d1a12e105f1a55c2d19b07f06430b2a1082577d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d455fdcd1945d5801eee36e8d1a12e105f1a55c2d19b07f06430b2a1082577d8", kill_on_drop: false }`
[INFO] [stdout] d455fdcd1945d5801eee36e8d1a12e105f1a55c2d19b07f06430b2a1082577d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2fac29166f5b27dd92c367a4b94c07c3608369b3fb83a1993a78f77f6a37eb33
[INFO] running `Command { std: "docker" "start" "-a" "2fac29166f5b27dd92c367a4b94c07c3608369b3fb83a1993a78f77f6a37eb33", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking arrayvec v0.7.6
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]    Compiling cc v1.1.30
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking etherparse v0.16.0
[INFO] [stderr]    Compiling tun-tap v0.1.4
[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 tokio-timer v0.2.13
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[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 tokio-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking mio-uds v0.6.8
[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 tcp_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     loop {
[INFO] [stdout] 14 | |         let nbytes = nic.recv(&mut buf[..])?;
[INFO] [stdout] 15 | |         let eth_flags = u16::from_be_bytes([buf[0], buf[1]]);
[INFO] [stdout] 16 | |         let eth_proto = u16::from_be_bytes([buf[2], buf[3]]);
[INFO] [stdout] ...  |
[INFO] [stdout] 62 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 63 |
[INFO] [stdout] 64 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `datai`
[INFO] [stdout]   --> src/main.rs:32:29
[INFO] [stdout]    |
[INFO] [stdout] 32 |                         let datai = 4 + iph.slice().len() + tcph.slice().len();
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_datai`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     loop {
[INFO] [stdout] 14 | |         let nbytes = nic.recv(&mut buf[..])?;
[INFO] [stdout] 15 | |         let eth_flags = u16::from_be_bytes([buf[0], buf[1]]);
[INFO] [stdout] 16 | |         let eth_proto = u16::from_be_bytes([buf[2], buf[3]]);
[INFO] [stdout] ...  |
[INFO] [stdout] 62 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 63 |
[INFO] [stdout] 64 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `datai`
[INFO] [stdout]   --> src/main.rs:32:29
[INFO] [stdout]    |
[INFO] [stdout] 32 |                         let datai = 4 + iph.slice().len() + tcph.slice().len();
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_datai`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.61s
[INFO] running `Command { std: "docker" "inspect" "2fac29166f5b27dd92c367a4b94c07c3608369b3fb83a1993a78f77f6a37eb33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fac29166f5b27dd92c367a4b94c07c3608369b3fb83a1993a78f77f6a37eb33", kill_on_drop: false }`
[INFO] [stdout] 2fac29166f5b27dd92c367a4b94c07c3608369b3fb83a1993a78f77f6a37eb33