[INFO] cloning repository https://github.com/Evadshell/trust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Evadshell/trust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEvadshell%2Ftrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEvadshell%2Ftrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] de7adbd366a3b7469aa7b66a575b894017bf0f02
[INFO] checking Evadshell/trust against master#8f21a5c92ea55c348c275a1bc4fedbdf181e0d64 for pr-143011
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEvadshell%2Ftrust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Evadshell/trust
[INFO] finished tweaking git repo https://github.com/Evadshell/trust
[INFO] tweaked toml for git repo https://github.com/Evadshell/trust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Evadshell/trust on toolchain 8f21a5c92ea55c348c275a1bc4fedbdf181e0d64
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Evadshell/trust 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" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tun-tap v0.1.4
[INFO] [stderr]   Downloaded tokio-core v0.1.18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 67055a6f108035c025dfe5f99d6f75782400817f87e9c0e6f5f433422265258f
[INFO] running `Command { std: "docker" "start" "-a" "67055a6f108035c025dfe5f99d6f75782400817f87e9c0e6f5f433422265258f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "67055a6f108035c025dfe5f99d6f75782400817f87e9c0e6f5f433422265258f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67055a6f108035c025dfe5f99d6f75782400817f87e9c0e6f5f433422265258f", kill_on_drop: false }`
[INFO] [stdout] 67055a6f108035c025dfe5f99d6f75782400817f87e9c0e6f5f433422265258f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5919c8171dcfb4ff3642d1ba0cf4fc1d0eee5155c4856b8cbbb860997933a5f
[INFO] running `Command { std: "docker" "start" "-a" "a5919c8171dcfb4ff3642d1ba0cf4fc1d0eee5155c4856b8cbbb860997933a5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking arrayvec v0.7.6
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]    Compiling cc v1.2.7
[INFO] [stderr]     Checking etherparse v0.16.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking tokio-sync v0.1.8
[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 bytes v0.4.12
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]    Compiling tun-tap v0.1.4
[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]     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] error[E0599]: no method named `slice` found for struct `etherparse::TcpHeader` in the current scope
[INFO] [stdout]   --> src/tcp.rs:37:29
[INFO] [stdout]    |
[INFO] [stdout] 37 |                     syn_ack.slice().len(),
[INFO] [stdout]    |                             ^^^^^ method not found in `etherparse::TcpHeader`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `slice` found for struct `etherparse::TcpHeader` in the current scope
[INFO] [stdout]   --> src/tcp.rs:37:29
[INFO] [stdout]    |
[INFO] [stdout] 37 |                     syn_ack.slice().len(),
[INFO] [stdout]    |                             ^^^^^ method not found in `etherparse::TcpHeader`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: arguments to this function are incorrect
[INFO] [stdout]    --> src/tcp.rs:36:30
[INFO] [stdout]     |
[INFO] [stdout] 36  |                 let mut ip = etherparse::Ipv4Header::new(
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40  |                     iph.destination_addr(),
[INFO] [stdout]     |                     ---------------------- expected `[u8; 4]`, found `Ipv4Addr`
[INFO] [stdout] 41  |                     iph.source_addr(),
[INFO] [stdout]     |                     ----------------- expected `[u8; 4]`, found `Ipv4Addr`
[INFO] [stdout]     |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/etherparse-0.16.0/src/net/ipv4_header.rs:124:12
[INFO] [stdout]     |
[INFO] [stdout] 124 |     pub fn new(
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: arguments to this function are incorrect
[INFO] [stdout]    --> src/tcp.rs:36:30
[INFO] [stdout]     |
[INFO] [stdout] 36  |                 let mut ip = etherparse::Ipv4Header::new(
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40  |                     iph.destination_addr(),
[INFO] [stdout]     |                     ---------------------- expected `[u8; 4]`, found `Ipv4Addr`
[INFO] [stdout] 41  |                     iph.source_addr(),
[INFO] [stdout]     |                     ----------------- expected `[u8; 4]`, found `Ipv4Addr`
[INFO] [stdout]     |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/etherparse-0.16.0/src/net/ipv4_header.rs:124:12
[INFO] [stdout]     |
[INFO] [stdout] 124 |     pub fn new(
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `write` found for enum `Result` in the current scope
[INFO] [stdout]    --> src/tcp.rs:43:20
[INFO] [stdout]     |
[INFO] [stdout] 43  |                 ip.write(unwritten);
[INFO] [stdout]     |                    ^^^^^ method not found in `Result<etherparse::Ipv4Header, ValueTooBigError<u16>>`
[INFO] [stdout]     |
[INFO] [stdout] note: the method `write` exists on the type `etherparse::Ipv4Header`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/etherparse-0.16.0/src/net/ipv4_header.rs:512:5
[INFO] [stdout]     |
[INFO] [stdout] 512 |     pub fn write<T: std::io::Write + Sized>(&self, writer: &mut T) -> Result<(), std::io::Error> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: consider using `Result::expect` to unwrap the `etherparse::Ipv4Header` value, panicking if the value is a `Result::Err`
[INFO] [stdout]     |
[INFO] [stdout] 43  |                 ip.expect("REASON").write(unwritten);
[INFO] [stdout]     |                   +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `write` found for enum `Result` in the current scope
[INFO] [stdout]    --> src/tcp.rs:43:20
[INFO] [stdout]     |
[INFO] [stdout] 43  |                 ip.write(unwritten);
[INFO] [stdout]     |                    ^^^^^ method not found in `Result<etherparse::Ipv4Header, ValueTooBigError<u16>>`
[INFO] [stdout]     |
[INFO] [stdout] note: the method `write` exists on the type `etherparse::Ipv4Header`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/etherparse-0.16.0/src/net/ipv4_header.rs:512:5
[INFO] [stdout]     |
[INFO] [stdout] 512 |     pub fn write<T: std::io::Write + Sized>(&self, writer: &mut T) -> Result<(), std::io::Error> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: consider using `Result::expect` to unwrap the `etherparse::Ipv4Header` value, panicking if the value is a `Result::Err`
[INFO] [stdout]     |
[INFO] [stdout] 43  |                 ip.expect("REASON").write(unwritten);
[INFO] [stdout]     |                   +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `[u8]: std::io::Write` is not satisfied
[INFO] [stdout]    --> src/tcp.rs:44:31
[INFO] [stdout]     |
[INFO] [stdout] 44  |                 syn_ack.write(unwritten);
[INFO] [stdout]     |                         ----- ^^^^^^^^^ the trait `std::io::Write` is not implemented for `[u8]`
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout] note: required by a bound in `etherparse::TcpHeader::write`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/etherparse-0.16.0/src/transport/tcp_header.rs:286:21
[INFO] [stdout]     |
[INFO] [stdout] 286 |     pub fn write<T: std::io::Write + Sized>(&self, writer: &mut T) -> Result<(), std::io::Error> {
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^ required by this bound in `TcpHeader::write`
[INFO] [stdout] help: consider mutably borrowing here
[INFO] [stdout]     |
[INFO] [stdout] 44  |                 syn_ack.write(&mut unwritten);
[INFO] [stdout]     |                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
[INFO] [stdout]    --> src/tcp.rs:44:31
[INFO] [stdout]     |
[INFO] [stdout] 44  |                 syn_ack.write(unwritten);
[INFO] [stdout]     |                         ----- ^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Sized` is not implemented for `[u8]`
[INFO] [stdout] note: required by a bound in `etherparse::TcpHeader::write`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/etherparse-0.16.0/src/transport/tcp_header.rs:286:38
[INFO] [stdout]     |
[INFO] [stdout] 286 |     pub fn write<T: std::io::Write + Sized>(&self, writer: &mut T) -> Result<(), std::io::Error> {
[INFO] [stdout]     |                                      ^^^^^ required by this bound in `TcpHeader::write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `[u8]: std::io::Write` is not satisfied
[INFO] [stdout]    --> src/tcp.rs:44:31
[INFO] [stdout]     |
[INFO] [stdout] 44  |                 syn_ack.write(unwritten);
[INFO] [stdout]     |                         ----- ^^^^^^^^^ the trait `std::io::Write` is not implemented for `[u8]`
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout] note: required by a bound in `etherparse::TcpHeader::write`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/etherparse-0.16.0/src/transport/tcp_header.rs:286:21
[INFO] [stdout]     |
[INFO] [stdout] 286 |     pub fn write<T: std::io::Write + Sized>(&self, writer: &mut T) -> Result<(), std::io::Error> {
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^ required by this bound in `TcpHeader::write`
[INFO] [stdout] help: consider mutably borrowing here
[INFO] [stdout]     |
[INFO] [stdout] 44  |                 syn_ack.write(&mut unwritten);
[INFO] [stdout]     |                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
[INFO] [stdout]    --> src/tcp.rs:44:31
[INFO] [stdout]     |
[INFO] [stdout] 44  |                 syn_ack.write(unwritten);
[INFO] [stdout]     |                         ----- ^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Sized` is not implemented for `[u8]`
[INFO] [stdout] note: required by a bound in `etherparse::TcpHeader::write`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/etherparse-0.16.0/src/transport/tcp_header.rs:286:38
[INFO] [stdout]     |
[INFO] [stdout] 286 |     pub fn write<T: std::io::Write + Sized>(&self, writer: &mut T) -> Result<(), std::io::Error> {
[INFO] [stdout]     |                                      ^^^^^ required by this bound in `TcpHeader::write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this method takes 4 arguments but 3 arguments were supplied
[INFO] [stdout]   --> src/main.rs:35:41
[INFO] [stdout]    |
[INFO] [stdout] 35 |                         }).or_default().on_packet(iph,tcph,&buf[datai..nbytes]);
[INFO] [stdout]    |                                         ^^^^^^^^^ --- argument #1 of type `&mut Iface` is missing
[INFO] [stdout]    |
[INFO] [stdout] note: method defined here
[INFO] [stdout]   --> src/tcp.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn on_packet<'a>(
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 16 |         &mut self,
[INFO] [stdout] 17 |         nic: &mut tun_tap::Iface, //means we can send packet ourselfs
[INFO] [stdout]    |         ------------------------
[INFO] [stdout] help: provide the argument
[INFO] [stdout]    |
[INFO] [stdout] 35 -                         }).or_default().on_packet(iph,tcph,&buf[datai..nbytes]);
[INFO] [stdout] 35 +                         }).or_default().on_packet(/* &mut Iface */, iph, tcph, &buf[datai..nbytes]);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     loop {
[INFO] [stdout] 14 | |         let nbytes = nic.recv(&mut buf[..])?;
[INFO] [stdout] 15 | |         let eth_flag = u16::from_be_bytes([buf[0], buf[1]]);
[INFO] [stdout] 16 | |         let eth_proto = u16::from_be_bytes([buf[2], buf[3]]); //this is link level protocol
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 48 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0061, E0277, E0308, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this method takes 4 arguments but 3 arguments were supplied
[INFO] [stdout]   --> src/main.rs:35:41
[INFO] [stdout]    |
[INFO] [stdout] 35 |                         }).or_default().on_packet(iph,tcph,&buf[datai..nbytes]);
[INFO] [stdout]    |                                         ^^^^^^^^^ --- argument #1 of type `&mut Iface` is missing
[INFO] [stdout]    |
[INFO] [stdout] note: method defined here
[INFO] [stdout]   --> src/tcp.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn on_packet<'a>(
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 16 |         &mut self,
[INFO] [stdout] 17 |         nic: &mut tun_tap::Iface, //means we can send packet ourselfs
[INFO] [stdout]    |         ------------------------
[INFO] [stdout] help: provide the argument
[INFO] [stdout]    |
[INFO] [stdout] 35 -                         }).or_default().on_packet(iph,tcph,&buf[datai..nbytes]);
[INFO] [stdout] 35 +                         }).or_default().on_packet(/* &mut Iface */, iph, tcph, &buf[datai..nbytes]);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     loop {
[INFO] [stdout] 14 | |         let nbytes = nic.recv(&mut buf[..])?;
[INFO] [stdout] 15 | |         let eth_flag = u16::from_be_bytes([buf[0], buf[1]]);
[INFO] [stdout] 16 | |         let eth_proto = u16::from_be_bytes([buf[2], buf[3]]); //this is link level protocol
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 48 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0061, E0277, E0308, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `trust` (bin "trust") due to 6 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `trust` (bin "trust" test) due to 6 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "a5919c8171dcfb4ff3642d1ba0cf4fc1d0eee5155c4856b8cbbb860997933a5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5919c8171dcfb4ff3642d1ba0cf4fc1d0eee5155c4856b8cbbb860997933a5f", kill_on_drop: false }`
[INFO] [stdout] a5919c8171dcfb4ff3642d1ba0cf4fc1d0eee5155c4856b8cbbb860997933a5f
