[INFO] cloning repository https://github.com/prime73num/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/prime73num/rust_tcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprime73num%2Frust_tcp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprime73num%2Frust_tcp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d8414ee91722658e2bca43e4494a666c08211b66
[INFO] testing prime73num/rust_tcp against master#1871252fc8bb672d40787e67404e6eaae7059369 for pr-125151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprime73num%2Frust_tcp" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/prime73num/rust_tcp on toolchain 1871252fc8bb672d40787e67404e6eaae7059369
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/prime73num/rust_tcp
[INFO] finished tweaking git repo https://github.com/prime73num/rust_tcp
[INFO] tweaked toml for git repo https://github.com/prime73num/rust_tcp written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/prime73num/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" "+1871252fc8bb672d40787e67404e6eaae7059369" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tun-tap v0.1.2
[INFO] [stderr]   Downloaded tokio-tun v0.5.3
[INFO] [stderr]   Downloaded nix v0.13.1
[INFO] [stderr]   Downloaded smoltcp v0.8.1
[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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6abfcb4debca5cd68544e4ad1d674ec159cd4c71900519e9ea9bfa2272e34046
[INFO] running `Command { std: "docker" "start" "-a" "6abfcb4debca5cd68544e4ad1d674ec159cd4c71900519e9ea9bfa2272e34046", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6abfcb4debca5cd68544e4ad1d674ec159cd4c71900519e9ea9bfa2272e34046", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6abfcb4debca5cd68544e4ad1d674ec159cd4c71900519e9ea9bfa2272e34046", kill_on_drop: false }`
[INFO] [stdout] 6abfcb4debca5cd68544e4ad1d674ec159cd4c71900519e9ea9bfa2272e34046
[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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f22428047f8548351226fe3e3d7d386db4f14efdfe3c5615cf51cab8f0a9088
[INFO] running `Command { std: "docker" "start" "-a" "8f22428047f8548351226fe3e3d7d386db4f14efdfe3c5615cf51cab8f0a9088", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling slab v0.4.6
[INFO] [stderr]    Compiling futures v0.1.31
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling smallvec v0.6.14
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling tokio-executor v0.1.10
[INFO] [stderr]    Compiling tokio-sync v0.1.8
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling crossbeam-deque v0.7.4
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling futures-sink v0.3.21
[INFO] [stderr]    Compiling tokio-codec v0.1.2
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling tokio-reactor v0.1.12
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling futures-io v0.3.21
[INFO] [stderr]    Compiling smallvec v1.9.0
[INFO] [stderr]    Compiling tokio-fs v0.1.7
[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr]    Compiling tokio-udp v0.1.6
[INFO] [stderr]    Compiling tokio-uds v0.2.7
[INFO] [stderr]    Compiling tokio-current-thread v0.1.7
[INFO] [stderr]    Compiling tokio-timer v0.2.13
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling mio v0.8.4
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling scoped-tls v0.1.2
[INFO] [stderr]    Compiling once_cell v1.13.0
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]    Compiling nix v0.24.1
[INFO] [stderr]    Compiling managed v0.8.0
[INFO] [stderr]    Compiling tokio-core v0.1.18
[INFO] [stderr]    Compiling tun-tap v0.1.2
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling smoltcp v0.8.1
[INFO] [stderr]    Compiling etherparse v0.10.1
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling tokio v1.19.2
[INFO] [stderr]    Compiling futures-executor v0.3.21
[INFO] [stderr]    Compiling futures v0.3.21
[INFO] [stderr]    Compiling tokio-tun v0.5.3
[INFO] [stderr]    Compiling TCPstack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `ConnectionPool_inner` should have an upper camel case name
[INFO] [stdout]   --> src/lib.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct ConnectionPool_inner {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `ConnectionPoolInner`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `etherparse::IpTrafficClass`: Please use the type IpNumber instead
[INFO] [stdout]    --> src/tcp.rs:167:29
[INFO] [stdout]     |
[INFO] [stdout] 167 |                 etherparse::IpTrafficClass::Tcp,
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:137:5
[INFO] [stdout]     |
[INFO] [stdout] 132 | /     loop {
[INFO] [stdout] 133 | |         if let Err(e) = try_recv() {
[INFO] [stdout] 134 | |             // println!("Skip because of {}", &e);
[INFO] [stdout] 135 | |         }
[INFO] [stdout] 136 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 137 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/tcp.rs:133:13
[INFO] [stdout]     |
[INFO] [stdout] 133 |         let buf = [0u8; 1500];
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/tcp.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |         data: &'a [u8],
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iph`
[INFO] [stdout]    --> src/tcp.rs:382:9
[INFO] [stdout]     |
[INFO] [stdout] 382 |         iph: etherparse::Ipv4HeaderSlice<'a>,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_iph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:474:25
[INFO] [stdout]     |
[INFO] [stdout] 474 |                     let mut srtt = &mut self.timers.srtt;
[INFO] [stdout]     |                         ----^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/lib.rs:133:20
[INFO] [stdout]     |
[INFO] [stdout] 133 |         if let Err(e) = try_recv() {
[INFO] [stdout]     |                    ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/lib.rs:115:21
[INFO] [stdout]     |
[INFO] [stdout] 115 |                 let a = cn.lock().unwrap().on_packet(&mut nic, iph, tcph, &buf[datai..nbytes])?;
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `listener` is never read
[INFO] [stdout]    --> src/lib.rs:178:13
[INFO] [stdout]     |
[INFO] [stdout] 178 |             listener = self.con_pool.pending_var.wait(listener).unwrap();
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]    --> src/lib.rs:212:13
[INFO] [stdout]     |
[INFO] [stdout] 212 |             c = var.wait(c).unwrap();
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `how`
[INFO] [stdout]    --> src/lib.rs:251:28
[INFO] [stdout]     |
[INFO] [stdout] 251 |     pub fn shutdown(&self, how: std::net::Shutdown) -> io::Result<()> {
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_how`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_connection`, `get`, and `remove` are never used
[INFO] [stdout]   --> src/lib.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl ConnectionPool_inner {
[INFO] [stdout]    | ------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn add_connection(&self, quad:Quad, cn:Connection) -> Arc<(Mutex<Connection>, Condvar)>{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn get(&self, q: &Quad) -> Option<Arc<(Mutex<Connection>, Condvar)>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     fn remove(&self, quad:Quad) -> Option<Arc<(Mutex<Connection>, Condvar)>> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `quad` is never read
[INFO] [stdout]    --> src/lib.rs:184:5
[INFO] [stdout]     |
[INFO] [stdout] 183 | pub struct TcpStream {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 184 |     quad: Quad,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_synchronized` is never used
[INFO] [stdout]   --> src/tcp.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl State {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 24 |     fn is_synchronized(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `up`, `wl1`, and `wl2` are never read
[INFO] [stdout]   --> src/tcp.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 86 | struct SendSequenceSpace {
[INFO] [stdout]    |        ----------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 94 |     up: bool,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 95 |     /// segment sequence number used for last window update
[INFO] [stdout] 96 |     wl1: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 97 |     /// segment acknowledgment number used for last window update
[INFO] [stdout] 98 |     wl2: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `up` and `irs` are never read
[INFO] [stdout]    --> src/tcp.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | struct RecvSequenceSpace {
[INFO] [stdout]     |        ----------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 121 |     up: bool,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 122 |     /// initial receive sequence number
[INFO] [stdout] 123 |     irs: u32,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `send_rst` is never used
[INFO] [stdout]    --> src/tcp.rs:299:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | impl Connection {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 299 |     fn send_rst(&mut self, nic: &mut tun_tap::Iface) -> io::Result<()> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `TCPstack` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `tcpstack`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:236:9
[INFO] [stdout]     |
[INFO] [stdout] 236 | /         self.ip
[INFO] [stdout] 237 | |             .set_payload_len(size - self.ip.header_len() as usize);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 236 |         let _ = self.ip
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 244 |         self.ip.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] 244 |         let _ = self.ip.write(&mut unwritten);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:275:9
[INFO] [stdout]     |
[INFO] [stdout] 275 |         self.tcp.write(&mut tcp_header_buf);
[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] 275 |         let _ = self.tcp.write(&mut tcp_header_buf);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.58s
[INFO] running `Command { std: "docker" "inspect" "8f22428047f8548351226fe3e3d7d386db4f14efdfe3c5615cf51cab8f0a9088", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f22428047f8548351226fe3e3d7d386db4f14efdfe3c5615cf51cab8f0a9088", kill_on_drop: false }`
[INFO] [stdout] 8f22428047f8548351226fe3e3d7d386db4f14efdfe3c5615cf51cab8f0a9088
[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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 729c6fa3612228adcaeaaf4b708acc38ce7f9e25b71ea99ce5ad5e6dce24f9e4
[INFO] running `Command { std: "docker" "start" "-a" "729c6fa3612228adcaeaaf4b708acc38ce7f9e25b71ea99ce5ad5e6dce24f9e4", kill_on_drop: false }`
[INFO] [stdout] warning: type `ConnectionPool_inner` should have an upper camel case name
[INFO] [stdout]   --> src/lib.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct ConnectionPool_inner {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `ConnectionPoolInner`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `etherparse::IpTrafficClass`: Please use the type IpNumber instead
[INFO] [stdout]    --> src/tcp.rs:167:29
[INFO] [stdout]     |
[INFO] [stdout] 167 |                 etherparse::IpTrafficClass::Tcp,
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:137:5
[INFO] [stdout]     |
[INFO] [stdout] 132 | /     loop {
[INFO] [stdout] 133 | |         if let Err(e) = try_recv() {
[INFO] [stdout] 134 | |             // println!("Skip because of {}", &e);
[INFO] [stdout] 135 | |         }
[INFO] [stdout] 136 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 137 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/tcp.rs:133:13
[INFO] [stdout]     |
[INFO] [stdout] 133 |         let buf = [0u8; 1500];
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/tcp.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |         data: &'a [u8],
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iph`
[INFO] [stdout]    --> src/tcp.rs:382:9
[INFO] [stdout]     |
[INFO] [stdout] 382 |         iph: etherparse::Ipv4HeaderSlice<'a>,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_iph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:474:25
[INFO] [stdout]     |
[INFO] [stdout] 474 |                     let mut srtt = &mut self.timers.srtt;
[INFO] [stdout]     |                         ----^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/lib.rs:133:20
[INFO] [stdout]     |
[INFO] [stdout] 133 |         if let Err(e) = try_recv() {
[INFO] [stdout]     |                    ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/lib.rs:115:21
[INFO] [stdout]     |
[INFO] [stdout] 115 |                 let a = cn.lock().unwrap().on_packet(&mut nic, iph, tcph, &buf[datai..nbytes])?;
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `listener` is never read
[INFO] [stdout]    --> src/lib.rs:178:13
[INFO] [stdout]     |
[INFO] [stdout] 178 |             listener = self.con_pool.pending_var.wait(listener).unwrap();
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]    --> src/lib.rs:212:13
[INFO] [stdout]     |
[INFO] [stdout] 212 |             c = var.wait(c).unwrap();
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `how`
[INFO] [stdout]    --> src/lib.rs:251:28
[INFO] [stdout]     |
[INFO] [stdout] 251 |     pub fn shutdown(&self, how: std::net::Shutdown) -> io::Result<()> {
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_how`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_connection`, `get`, and `remove` are never used
[INFO] [stdout]   --> src/lib.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl ConnectionPool_inner {
[INFO] [stdout]    | ------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn add_connection(&self, quad:Quad, cn:Connection) -> Arc<(Mutex<Connection>, Condvar)>{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn get(&self, q: &Quad) -> Option<Arc<(Mutex<Connection>, Condvar)>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     fn remove(&self, quad:Quad) -> Option<Arc<(Mutex<Connection>, Condvar)>> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `quad` is never read
[INFO] [stdout]    --> src/lib.rs:184:5
[INFO] [stdout]     |
[INFO] [stdout] 183 | pub struct TcpStream {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 184 |     quad: Quad,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_synchronized` is never used
[INFO] [stdout]   --> src/tcp.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl State {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 24 |     fn is_synchronized(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `up`, `wl1`, and `wl2` are never read
[INFO] [stdout]   --> src/tcp.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 86 | struct SendSequenceSpace {
[INFO] [stdout]    |        ----------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 94 |     up: bool,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 95 |     /// segment sequence number used for last window update
[INFO] [stdout] 96 |     wl1: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 97 |     /// segment acknowledgment number used for last window update
[INFO] [stdout] 98 |     wl2: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `up` and `irs` are never read
[INFO] [stdout]    --> src/tcp.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | struct RecvSequenceSpace {
[INFO] [stdout]     |        ----------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 121 |     up: bool,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 122 |     /// initial receive sequence number
[INFO] [stdout] 123 |     irs: u32,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `send_rst` is never used
[INFO] [stdout]    --> src/tcp.rs:299:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | impl Connection {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 299 |     fn send_rst(&mut self, nic: &mut tun_tap::Iface) -> io::Result<()> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `TCPstack` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `tcpstack`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:236:9
[INFO] [stdout]     |
[INFO] [stdout] 236 | /         self.ip
[INFO] [stdout] 237 | |             .set_payload_len(size - self.ip.header_len() as usize);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 236 |         let _ = self.ip
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling TCPstack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 244 |         self.ip.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] 244 |         let _ = self.ip.write(&mut unwritten);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:275:9
[INFO] [stdout]     |
[INFO] [stdout] 275 |         self.tcp.write(&mut tcp_header_buf);
[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] 275 |         let _ = self.tcp.write(&mut tcp_header_buf);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `ConnectionPool_inner` should have an upper camel case name
[INFO] [stdout]   --> src/lib.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct ConnectionPool_inner {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `ConnectionPoolInner`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]    --> src/lib.rs:259:9
[INFO] [stdout]     |
[INFO] [stdout] 259 |     use std::time::Duration;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `etherparse::IpTrafficClass`: Please use the type IpNumber instead
[INFO] [stdout]    --> src/tcp.rs:167:29
[INFO] [stdout]     |
[INFO] [stdout] 167 |                 etherparse::IpTrafficClass::Tcp,
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:137:5
[INFO] [stdout]     |
[INFO] [stdout] 132 | /     loop {
[INFO] [stdout] 133 | |         if let Err(e) = try_recv() {
[INFO] [stdout] 134 | |             // println!("Skip because of {}", &e);
[INFO] [stdout] 135 | |         }
[INFO] [stdout] 136 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 137 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/tcp.rs:133:13
[INFO] [stdout]     |
[INFO] [stdout] 133 |         let buf = [0u8; 1500];
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/tcp.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |         data: &'a [u8],
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iph`
[INFO] [stdout]    --> src/tcp.rs:382:9
[INFO] [stdout]     |
[INFO] [stdout] 382 |         iph: etherparse::Ipv4HeaderSlice<'a>,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_iph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:474:25
[INFO] [stdout]     |
[INFO] [stdout] 474 |                     let mut srtt = &mut self.timers.srtt;
[INFO] [stdout]     |                         ----^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/lib.rs:133:20
[INFO] [stdout]     |
[INFO] [stdout] 133 |         if let Err(e) = try_recv() {
[INFO] [stdout]     |                    ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/lib.rs:115:21
[INFO] [stdout]     |
[INFO] [stdout] 115 |                 let a = cn.lock().unwrap().on_packet(&mut nic, iph, tcph, &buf[datai..nbytes])?;
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `listener` is never read
[INFO] [stdout]    --> src/lib.rs:178:13
[INFO] [stdout]     |
[INFO] [stdout] 178 |             listener = self.con_pool.pending_var.wait(listener).unwrap();
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]    --> src/lib.rs:212:13
[INFO] [stdout]     |
[INFO] [stdout] 212 |             c = var.wait(c).unwrap();
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `how`
[INFO] [stdout]    --> src/lib.rs:251:28
[INFO] [stdout]     |
[INFO] [stdout] 251 |     pub fn shutdown(&self, how: std::net::Shutdown) -> io::Result<()> {
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_how`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_connection`, `get`, and `remove` are never used
[INFO] [stdout]   --> src/lib.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl ConnectionPool_inner {
[INFO] [stdout]    | ------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn add_connection(&self, quad:Quad, cn:Connection) -> Arc<(Mutex<Connection>, Condvar)>{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn get(&self, q: &Quad) -> Option<Arc<(Mutex<Connection>, Condvar)>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     fn remove(&self, quad:Quad) -> Option<Arc<(Mutex<Connection>, Condvar)>> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `quad` is never read
[INFO] [stdout]    --> src/lib.rs:184:5
[INFO] [stdout]     |
[INFO] [stdout] 183 | pub struct TcpStream {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 184 |     quad: Quad,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_synchronized` is never used
[INFO] [stdout]   --> src/tcp.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl State {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 24 |     fn is_synchronized(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `up`, `wl1`, and `wl2` are never read
[INFO] [stdout]   --> src/tcp.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 86 | struct SendSequenceSpace {
[INFO] [stdout]    |        ----------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 94 |     up: bool,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 95 |     /// segment sequence number used for last window update
[INFO] [stdout] 96 |     wl1: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 97 |     /// segment acknowledgment number used for last window update
[INFO] [stdout] 98 |     wl2: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `up` and `irs` are never read
[INFO] [stdout]    --> src/tcp.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | struct RecvSequenceSpace {
[INFO] [stdout]     |        ----------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 121 |     up: bool,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 122 |     /// initial receive sequence number
[INFO] [stdout] 123 |     irs: u32,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `send_rst` is never used
[INFO] [stdout]    --> src/tcp.rs:299:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | impl Connection {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 299 |     fn send_rst(&mut self, nic: &mut tun_tap::Iface) -> io::Result<()> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_packet_loop` is never used
[INFO] [stdout]    --> src/lib.rs:263:8
[INFO] [stdout]     |
[INFO] [stdout] 263 |     fn test_packet_loop() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:236:9
[INFO] [stdout]     |
[INFO] [stdout] 236 | /         self.ip
[INFO] [stdout] 237 | |             .set_payload_len(size - self.ip.header_len() as usize);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 236 |         let _ = self.ip
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 244 |         self.ip.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] 244 |         let _ = self.ip.write(&mut unwritten);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:275:9
[INFO] [stdout]     |
[INFO] [stdout] 275 |         self.tcp.write(&mut tcp_header_buf);
[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] 275 |         let _ = self.tcp.write(&mut tcp_header_buf);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:266:9
[INFO] [stdout]     |
[INFO] [stdout] 266 |         packet_loop(nic, con_pool);
[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] 266 |         let _ = packet_loop(nic, con_pool);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "729c6fa3612228adcaeaaf4b708acc38ce7f9e25b71ea99ce5ad5e6dce24f9e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "729c6fa3612228adcaeaaf4b708acc38ce7f9e25b71ea99ce5ad5e6dce24f9e4", kill_on_drop: false }`
[INFO] [stdout] 729c6fa3612228adcaeaaf4b708acc38ce7f9e25b71ea99ce5ad5e6dce24f9e4
[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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 909e9ababa651b2ac01c3f7058a1cc10f224e311f4a905ba07a84b4704928051
[INFO] running `Command { std: "docker" "start" "-a" "909e9ababa651b2ac01c3f7058a1cc10f224e311f4a905ba07a84b4704928051", kill_on_drop: false }`
[INFO] [stderr] warning: type `ConnectionPool_inner` should have an upper camel case name
[INFO] [stderr]   --> src/lib.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 | struct ConnectionPool_inner {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `ConnectionPoolInner`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated type alias `etherparse::IpTrafficClass`: Please use the type IpNumber instead
[INFO] [stderr]    --> src/tcp.rs:167:29
[INFO] [stderr]     |
[INFO] [stderr] 167 |                 etherparse::IpTrafficClass::Tcp,
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:137:5
[INFO] [stderr]     |
[INFO] [stderr] 132 | /     loop {
[INFO] [stderr] 133 | |         if let Err(e) = try_recv() {
[INFO] [stderr] 134 | |             // println!("Skip because of {}", &e);
[INFO] [stderr] 135 | |         }
[INFO] [stderr] 136 | |     }
[INFO] [stderr]     | |_____- any code following this expression is unreachable
[INFO] [stderr] 137 |       Ok(())
[INFO] [stderr]     |       ^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/tcp.rs:133:13
[INFO] [stderr]     |
[INFO] [stderr] 133 |         let buf = [0u8; 1500];
[INFO] [stderr]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/tcp.rs:131:9
[INFO] [stderr]     |
[INFO] [stderr] 131 |         data: &'a [u8],
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `iph`
[INFO] [stderr]    --> src/tcp.rs:382:9
[INFO] [stderr]     |
[INFO] [stderr] 382 |         iph: etherparse::Ipv4HeaderSlice<'a>,
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_iph`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/tcp.rs:474:25
[INFO] [stderr]     |
[INFO] [stderr] 474 |                     let mut srtt = &mut self.timers.srtt;
[INFO] [stderr]     |                         ----^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/lib.rs:133:20
[INFO] [stderr]     |
[INFO] [stderr] 133 |         if let Err(e) = try_recv() {
[INFO] [stderr]     |                    ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/lib.rs:115:21
[INFO] [stderr]     |
[INFO] [stderr] 115 |                 let a = cn.lock().unwrap().on_packet(&mut nic, iph, tcph, &buf[datai..nbytes])?;
[INFO] [stderr]     |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `listener` is never read
[INFO] [stderr]    --> src/lib.rs:178:13
[INFO] [stderr]     |
[INFO] [stderr] 178 |             listener = self.con_pool.pending_var.wait(listener).unwrap();
[INFO] [stderr]     |             ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `c` is never read
[INFO] [stderr]    --> src/lib.rs:212:13
[INFO] [stderr]     |
[INFO] [stderr] 212 |             c = var.wait(c).unwrap();
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `how`
[INFO] [stderr]    --> src/lib.rs:251:28
[INFO] [stderr]     |
[INFO] [stderr] 251 |     pub fn shutdown(&self, how: std::net::Shutdown) -> io::Result<()> {
[INFO] [stderr]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_how`
[INFO] [stderr] 
[INFO] [stderr] warning: methods `add_connection`, `get`, and `remove` are never used
[INFO] [stderr]   --> src/lib.rs:46:8
[INFO] [stderr]    |
[INFO] [stderr] 38 | impl ConnectionPool_inner {
[INFO] [stderr]    | ------------------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 46 |     fn add_connection(&self, quad:Quad, cn:Connection) -> Arc<(Mutex<Connection>, Condvar)>{
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 51 |     fn get(&self, q: &Quad) -> Option<Arc<(Mutex<Connection>, Condvar)>> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 56 |     fn remove(&self, quad:Quad) -> Option<Arc<(Mutex<Connection>, Condvar)>> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `quad` is never read
[INFO] [stderr]    --> src/lib.rs:184:5
[INFO] [stderr]     |
[INFO] [stderr] 183 | pub struct TcpStream {
[INFO] [stderr]     |            --------- field in this struct
[INFO] [stderr] 184 |     quad: Quad,
[INFO] [stderr]     |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `is_synchronized` is never used
[INFO] [stderr]   --> src/tcp.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 23 | impl State {
[INFO] [stderr]    | ---------- method in this implementation
[INFO] [stderr] 24 |     fn is_synchronized(&self) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `up`, `wl1`, and `wl2` are never read
[INFO] [stderr]   --> src/tcp.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 86 | struct SendSequenceSpace {
[INFO] [stderr]    |        ----------------- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 94 |     up: bool,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 95 |     /// segment sequence number used for last window update
[INFO] [stderr] 96 |     wl1: usize,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 97 |     /// segment acknowledgment number used for last window update
[INFO] [stderr] 98 |     wl2: usize,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `up` and `irs` are never read
[INFO] [stderr]    --> src/tcp.rs:121:5
[INFO] [stderr]     |
[INFO] [stderr] 115 | struct RecvSequenceSpace {
[INFO] [stderr]     |        ----------------- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 121 |     up: bool,
[INFO] [stderr]     |     ^^
[INFO] [stderr] 122 |     /// initial receive sequence number
[INFO] [stderr] 123 |     irs: u32,
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `send_rst` is never used
[INFO] [stderr]    --> src/tcp.rs:299:8
[INFO] [stderr]     |
[INFO] [stderr] 126 | impl Connection {
[INFO] [stderr]     | --------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 299 |     fn send_rst(&mut self, nic: &mut tun_tap::Iface) -> io::Result<()> {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate `TCPstack` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = help: convert the identifier to snake case: `tcpstack`
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/tcp.rs:236:9
[INFO] [stderr]     |
[INFO] [stderr] 236 | /         self.ip
[INFO] [stderr] 237 | |             .set_payload_len(size - self.ip.header_len() as usize);
[INFO] [stderr]     | |__________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 236 |         let _ = self.ip
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/tcp.rs:244:9
[INFO] [stderr]     |
[INFO] [stderr] 244 |         self.ip.write(&mut unwritten);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 244 |         let _ = self.ip.write(&mut unwritten);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/tcp.rs:275:9
[INFO] [stderr]     |
[INFO] [stderr] 275 |         self.tcp.write(&mut tcp_header_buf);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 275 |         let _ = self.tcp.write(&mut tcp_header_buf);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]    --> src/lib.rs:259:9
[INFO] [stderr]     |
[INFO] [stderr] 259 |     use std::time::Duration;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_packet_loop` is never used
[INFO] [stderr]    --> src/lib.rs:263:8
[INFO] [stderr]     |
[INFO] [stderr] 263 |     fn test_packet_loop() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/lib.rs:266:9
[INFO] [stderr]     |
[INFO] [stderr] 266 |         packet_loop(nic, con_pool);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 266 |         let _ = packet_loop(nic, con_pool);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `TCPstack` (lib) generated 22 warnings (run `cargo fix --lib -p TCPstack` to apply 1 suggestion)
[INFO] [stderr] warning: `TCPstack` (lib test) generated 24 warnings (21 duplicates) (run `cargo fix --lib -p TCPstack --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/TCPstack-57175933bf431db7)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/TCPstack-8ea1beffe3b3dfcb)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests TCPstack
[INFO] [stderr] warning: type `ConnectionPool_inner` should have an upper camel case name
[INFO] [stderr]   --> src/lib.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 | struct ConnectionPool_inner {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `ConnectionPoolInner`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/tcp.rs - tcp::RecvSequenceSpace (line 105) ... FAILED
[INFO] [stdout] test src/tcp.rs - tcp::SendSequenceSpace (line 75) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/tcp.rs - tcp::RecvSequenceSpace (line 105) stdout ----
[INFO] [stdout] error: expected one of `.`, `;`, `?`, `}`, or an operator, found `2`
[INFO] [stdout]  --> src/tcp.rs:106:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | 1          2          3
[INFO] [stdout]   |            ^ expected one of `.`, `;`, `?`, `}`, or an operator
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/tcp.rs - tcp::SendSequenceSpace (line 75) stdout ----
[INFO] [stdout] error: expected one of `.`, `;`, `?`, `}`, or an operator, found `2`
[INFO] [stdout]  --> src/tcp.rs:76:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | 1         2          3          4
[INFO] [stdout]   |           ^ expected one of `.`, `;`, `?`, `}`, or an operator
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/tcp.rs - tcp::RecvSequenceSpace (line 105)
[INFO] [stdout]     src/tcp.rs - tcp::SendSequenceSpace (line 75)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "909e9ababa651b2ac01c3f7058a1cc10f224e311f4a905ba07a84b4704928051", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "909e9ababa651b2ac01c3f7058a1cc10f224e311f4a905ba07a84b4704928051", kill_on_drop: false }`
[INFO] [stdout] 909e9ababa651b2ac01c3f7058a1cc10f224e311f4a905ba07a84b4704928051
[INFO] testing prime73num/rust_tcp against try#b642703cf9526da1e72c0b6755753b939a9c6b6d for pr-125151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprime73num%2Frust_tcp" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/prime73num/rust_tcp on toolchain b642703cf9526da1e72c0b6755753b939a9c6b6d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/prime73num/rust_tcp
[INFO] finished tweaking git repo https://github.com/prime73num/rust_tcp
[INFO] tweaked toml for git repo https://github.com/prime73num/rust_tcp written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/prime73num/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" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f808fe8db6c0029026a65ae1510976240b9849fcfe31834d32ebb5dc84c6736
[INFO] running `Command { std: "docker" "start" "-a" "6f808fe8db6c0029026a65ae1510976240b9849fcfe31834d32ebb5dc84c6736", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f808fe8db6c0029026a65ae1510976240b9849fcfe31834d32ebb5dc84c6736", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f808fe8db6c0029026a65ae1510976240b9849fcfe31834d32ebb5dc84c6736", kill_on_drop: false }`
[INFO] [stdout] 6f808fe8db6c0029026a65ae1510976240b9849fcfe31834d32ebb5dc84c6736
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3fb4c82742498f7ddf77a28e0bdb2a91b14b35a588bb4e04d7e038fefed3db23
[INFO] running `Command { std: "docker" "start" "-a" "3fb4c82742498f7ddf77a28e0bdb2a91b14b35a588bb4e04d7e038fefed3db23", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling cfg-if v1.0.0
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[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling semver v0.9.0
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[INFO] [stderr]    Compiling smallvec v0.6.14
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling rustc_version v0.2.3
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[INFO] [stderr]    Compiling tokio-reactor v0.1.12
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[INFO] [stderr]    Compiling tokio-fs v0.1.7
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[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling mio v0.8.4
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling scoped-tls v0.1.2
[INFO] [stderr]    Compiling once_cell v1.13.0
[INFO] [stderr]    Compiling tokio-core v0.1.18
[INFO] [stderr]    Compiling nix v0.24.1
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling managed v0.8.0
[INFO] [stderr]    Compiling etherparse v0.10.1
[INFO] [stderr]    Compiling smoltcp v0.8.1
[INFO] [stderr]    Compiling tun-tap v0.1.2
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling tokio v1.19.2
[INFO] [stderr]    Compiling futures-executor v0.3.21
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[INFO] [stderr]    Compiling tokio-tun v0.5.3
[INFO] [stderr]    Compiling TCPstack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `ConnectionPool_inner` should have an upper camel case name
[INFO] [stdout]   --> src/lib.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct ConnectionPool_inner {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `ConnectionPoolInner`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `etherparse::IpTrafficClass`: Please use the type IpNumber instead
[INFO] [stdout]    --> src/tcp.rs:167:29
[INFO] [stdout]     |
[INFO] [stdout] 167 |                 etherparse::IpTrafficClass::Tcp,
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:137:5
[INFO] [stdout]     |
[INFO] [stdout] 132 | /     loop {
[INFO] [stdout] 133 | |         if let Err(e) = try_recv() {
[INFO] [stdout] 134 | |             // println!("Skip because of {}", &e);
[INFO] [stdout] 135 | |         }
[INFO] [stdout] 136 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 137 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/tcp.rs:133:13
[INFO] [stdout]     |
[INFO] [stdout] 133 |         let buf = [0u8; 1500];
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/tcp.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |         data: &'a [u8],
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iph`
[INFO] [stdout]    --> src/tcp.rs:382:9
[INFO] [stdout]     |
[INFO] [stdout] 382 |         iph: etherparse::Ipv4HeaderSlice<'a>,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_iph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:474:25
[INFO] [stdout]     |
[INFO] [stdout] 474 |                     let mut srtt = &mut self.timers.srtt;
[INFO] [stdout]     |                         ----^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/lib.rs:133:20
[INFO] [stdout]     |
[INFO] [stdout] 133 |         if let Err(e) = try_recv() {
[INFO] [stdout]     |                    ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/lib.rs:115:21
[INFO] [stdout]     |
[INFO] [stdout] 115 |                 let a = cn.lock().unwrap().on_packet(&mut nic, iph, tcph, &buf[datai..nbytes])?;
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `listener` is never read
[INFO] [stdout]    --> src/lib.rs:178:13
[INFO] [stdout]     |
[INFO] [stdout] 178 |             listener = self.con_pool.pending_var.wait(listener).unwrap();
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]    --> src/lib.rs:212:13
[INFO] [stdout]     |
[INFO] [stdout] 212 |             c = var.wait(c).unwrap();
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `how`
[INFO] [stdout]    --> src/lib.rs:251:28
[INFO] [stdout]     |
[INFO] [stdout] 251 |     pub fn shutdown(&self, how: std::net::Shutdown) -> io::Result<()> {
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_how`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_connection`, `get`, and `remove` are never used
[INFO] [stdout]   --> src/lib.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl ConnectionPool_inner {
[INFO] [stdout]    | ------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn add_connection(&self, quad:Quad, cn:Connection) -> Arc<(Mutex<Connection>, Condvar)>{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn get(&self, q: &Quad) -> Option<Arc<(Mutex<Connection>, Condvar)>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     fn remove(&self, quad:Quad) -> Option<Arc<(Mutex<Connection>, Condvar)>> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `quad` is never read
[INFO] [stdout]    --> src/lib.rs:184:5
[INFO] [stdout]     |
[INFO] [stdout] 183 | pub struct TcpStream {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 184 |     quad: Quad,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_synchronized` is never used
[INFO] [stdout]   --> src/tcp.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl State {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 24 |     fn is_synchronized(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `up`, `wl1`, and `wl2` are never read
[INFO] [stdout]   --> src/tcp.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 86 | struct SendSequenceSpace {
[INFO] [stdout]    |        ----------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 94 |     up: bool,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 95 |     /// segment sequence number used for last window update
[INFO] [stdout] 96 |     wl1: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 97 |     /// segment acknowledgment number used for last window update
[INFO] [stdout] 98 |     wl2: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `up` and `irs` are never read
[INFO] [stdout]    --> src/tcp.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | struct RecvSequenceSpace {
[INFO] [stdout]     |        ----------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 121 |     up: bool,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 122 |     /// initial receive sequence number
[INFO] [stdout] 123 |     irs: u32,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `send_rst` is never used
[INFO] [stdout]    --> src/tcp.rs:299:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | impl Connection {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 299 |     fn send_rst(&mut self, nic: &mut tun_tap::Iface) -> io::Result<()> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `TCPstack` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `tcpstack`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:236:9
[INFO] [stdout]     |
[INFO] [stdout] 236 | /         self.ip
[INFO] [stdout] 237 | |             .set_payload_len(size - self.ip.header_len() as usize);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 236 |         let _ = self.ip
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 244 |         self.ip.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] 244 |         let _ = self.ip.write(&mut unwritten);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:275:9
[INFO] [stdout]     |
[INFO] [stdout] 275 |         self.tcp.write(&mut tcp_header_buf);
[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] 275 |         let _ = self.tcp.write(&mut tcp_header_buf);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.28s
[INFO] running `Command { std: "docker" "inspect" "3fb4c82742498f7ddf77a28e0bdb2a91b14b35a588bb4e04d7e038fefed3db23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fb4c82742498f7ddf77a28e0bdb2a91b14b35a588bb4e04d7e038fefed3db23", kill_on_drop: false }`
[INFO] [stdout] 3fb4c82742498f7ddf77a28e0bdb2a91b14b35a588bb4e04d7e038fefed3db23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 080b1d85b92527679fa9f96dc1b1a288694d0d0042f03ffd6a35d0b7e3d9c8de
[INFO] running `Command { std: "docker" "start" "-a" "080b1d85b92527679fa9f96dc1b1a288694d0d0042f03ffd6a35d0b7e3d9c8de", kill_on_drop: false }`
[INFO] [stdout] warning: type `ConnectionPool_inner` should have an upper camel case name
[INFO] [stdout]   --> src/lib.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct ConnectionPool_inner {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `ConnectionPoolInner`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `etherparse::IpTrafficClass`: Please use the type IpNumber instead
[INFO] [stdout]    --> src/tcp.rs:167:29
[INFO] [stdout]     |
[INFO] [stdout] 167 |                 etherparse::IpTrafficClass::Tcp,
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:137:5
[INFO] [stdout]     |
[INFO] [stdout] 132 | /     loop {
[INFO] [stdout] 133 | |         if let Err(e) = try_recv() {
[INFO] [stdout] 134 | |             // println!("Skip because of {}", &e);
[INFO] [stdout] 135 | |         }
[INFO] [stdout] 136 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 137 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/tcp.rs:133:13
[INFO] [stdout]     |
[INFO] [stdout] 133 |         let buf = [0u8; 1500];
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/tcp.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |         data: &'a [u8],
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iph`
[INFO] [stdout]    --> src/tcp.rs:382:9
[INFO] [stdout]     |
[INFO] [stdout] 382 |         iph: etherparse::Ipv4HeaderSlice<'a>,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_iph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:474:25
[INFO] [stdout]     |
[INFO] [stdout] 474 |                     let mut srtt = &mut self.timers.srtt;
[INFO] [stdout]     |                         ----^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/lib.rs:133:20
[INFO] [stdout]     |
[INFO] [stdout] 133 |         if let Err(e) = try_recv() {
[INFO] [stdout]     |                    ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/lib.rs:115:21
[INFO] [stdout]     |
[INFO] [stdout] 115 |                 let a = cn.lock().unwrap().on_packet(&mut nic, iph, tcph, &buf[datai..nbytes])?;
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `listener` is never read
[INFO] [stdout]    --> src/lib.rs:178:13
[INFO] [stdout]     |
[INFO] [stdout] 178 |             listener = self.con_pool.pending_var.wait(listener).unwrap();
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]    --> src/lib.rs:212:13
[INFO] [stdout]     |
[INFO] [stdout] 212 |             c = var.wait(c).unwrap();
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `how`
[INFO] [stdout]    --> src/lib.rs:251:28
[INFO] [stdout]     |
[INFO] [stdout] 251 |     pub fn shutdown(&self, how: std::net::Shutdown) -> io::Result<()> {
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_how`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_connection`, `get`, and `remove` are never used
[INFO] [stdout]   --> src/lib.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl ConnectionPool_inner {
[INFO] [stdout]    | ------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn add_connection(&self, quad:Quad, cn:Connection) -> Arc<(Mutex<Connection>, Condvar)>{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn get(&self, q: &Quad) -> Option<Arc<(Mutex<Connection>, Condvar)>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     fn remove(&self, quad:Quad) -> Option<Arc<(Mutex<Connection>, Condvar)>> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `quad` is never read
[INFO] [stdout]    --> src/lib.rs:184:5
[INFO] [stdout]     |
[INFO] [stdout] 183 | pub struct TcpStream {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 184 |     quad: Quad,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_synchronized` is never used
[INFO] [stdout]   --> src/tcp.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl State {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 24 |     fn is_synchronized(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `up`, `wl1`, and `wl2` are never read
[INFO] [stdout]   --> src/tcp.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 86 | struct SendSequenceSpace {
[INFO] [stdout]    |        ----------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 94 |     up: bool,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 95 |     /// segment sequence number used for last window update
[INFO] [stdout] 96 |     wl1: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 97 |     /// segment acknowledgment number used for last window update
[INFO] [stdout] 98 |     wl2: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `up` and `irs` are never read
[INFO] [stdout]    --> src/tcp.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | struct RecvSequenceSpace {
[INFO] [stdout]     |        ----------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 121 |     up: bool,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 122 |     /// initial receive sequence number
[INFO] [stdout] 123 |     irs: u32,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `send_rst` is never used
[INFO] [stdout]    --> src/tcp.rs:299:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | impl Connection {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 299 |     fn send_rst(&mut self, nic: &mut tun_tap::Iface) -> io::Result<()> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `TCPstack` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `tcpstack`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:236:9
[INFO] [stdout]     |
[INFO] [stdout] 236 | /         self.ip
[INFO] [stdout] 237 | |             .set_payload_len(size - self.ip.header_len() as usize);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 236 |         let _ = self.ip
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 244 |         self.ip.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] 244 |         let _ = self.ip.write(&mut unwritten);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:275:9
[INFO] [stdout]     |
[INFO] [stdout] 275 |         self.tcp.write(&mut tcp_header_buf);
[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] 275 |         let _ = self.tcp.write(&mut tcp_header_buf);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling TCPstack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `ConnectionPool_inner` should have an upper camel case name
[INFO] [stdout]   --> src/lib.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct ConnectionPool_inner {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `ConnectionPoolInner`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]    --> src/lib.rs:259:9
[INFO] [stdout]     |
[INFO] [stdout] 259 |     use std::time::Duration;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `etherparse::IpTrafficClass`: Please use the type IpNumber instead
[INFO] [stdout]    --> src/tcp.rs:167:29
[INFO] [stdout]     |
[INFO] [stdout] 167 |                 etherparse::IpTrafficClass::Tcp,
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:137:5
[INFO] [stdout]     |
[INFO] [stdout] 132 | /     loop {
[INFO] [stdout] 133 | |         if let Err(e) = try_recv() {
[INFO] [stdout] 134 | |             // println!("Skip because of {}", &e);
[INFO] [stdout] 135 | |         }
[INFO] [stdout] 136 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 137 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/tcp.rs:133:13
[INFO] [stdout]     |
[INFO] [stdout] 133 |         let buf = [0u8; 1500];
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/tcp.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |         data: &'a [u8],
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iph`
[INFO] [stdout]    --> src/tcp.rs:382:9
[INFO] [stdout]     |
[INFO] [stdout] 382 |         iph: etherparse::Ipv4HeaderSlice<'a>,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_iph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tcp.rs:474:25
[INFO] [stdout]     |
[INFO] [stdout] 474 |                     let mut srtt = &mut self.timers.srtt;
[INFO] [stdout]     |                         ----^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/lib.rs:133:20
[INFO] [stdout]     |
[INFO] [stdout] 133 |         if let Err(e) = try_recv() {
[INFO] [stdout]     |                    ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/lib.rs:115:21
[INFO] [stdout]     |
[INFO] [stdout] 115 |                 let a = cn.lock().unwrap().on_packet(&mut nic, iph, tcph, &buf[datai..nbytes])?;
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `listener` is never read
[INFO] [stdout]    --> src/lib.rs:178:13
[INFO] [stdout]     |
[INFO] [stdout] 178 |             listener = self.con_pool.pending_var.wait(listener).unwrap();
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]    --> src/lib.rs:212:13
[INFO] [stdout]     |
[INFO] [stdout] 212 |             c = var.wait(c).unwrap();
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `how`
[INFO] [stdout]    --> src/lib.rs:251:28
[INFO] [stdout]     |
[INFO] [stdout] 251 |     pub fn shutdown(&self, how: std::net::Shutdown) -> io::Result<()> {
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_how`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_connection`, `get`, and `remove` are never used
[INFO] [stdout]   --> src/lib.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl ConnectionPool_inner {
[INFO] [stdout]    | ------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn add_connection(&self, quad:Quad, cn:Connection) -> Arc<(Mutex<Connection>, Condvar)>{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn get(&self, q: &Quad) -> Option<Arc<(Mutex<Connection>, Condvar)>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     fn remove(&self, quad:Quad) -> Option<Arc<(Mutex<Connection>, Condvar)>> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `quad` is never read
[INFO] [stdout]    --> src/lib.rs:184:5
[INFO] [stdout]     |
[INFO] [stdout] 183 | pub struct TcpStream {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 184 |     quad: Quad,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_synchronized` is never used
[INFO] [stdout]   --> src/tcp.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl State {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 24 |     fn is_synchronized(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `up`, `wl1`, and `wl2` are never read
[INFO] [stdout]   --> src/tcp.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 86 | struct SendSequenceSpace {
[INFO] [stdout]    |        ----------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 94 |     up: bool,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 95 |     /// segment sequence number used for last window update
[INFO] [stdout] 96 |     wl1: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 97 |     /// segment acknowledgment number used for last window update
[INFO] [stdout] 98 |     wl2: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `up` and `irs` are never read
[INFO] [stdout]    --> src/tcp.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | struct RecvSequenceSpace {
[INFO] [stdout]     |        ----------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 121 |     up: bool,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 122 |     /// initial receive sequence number
[INFO] [stdout] 123 |     irs: u32,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `send_rst` is never used
[INFO] [stdout]    --> src/tcp.rs:299:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | impl Connection {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 299 |     fn send_rst(&mut self, nic: &mut tun_tap::Iface) -> io::Result<()> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_packet_loop` is never used
[INFO] [stdout]    --> src/lib.rs:263:8
[INFO] [stdout]     |
[INFO] [stdout] 263 |     fn test_packet_loop() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:236:9
[INFO] [stdout]     |
[INFO] [stdout] 236 | /         self.ip
[INFO] [stdout] 237 | |             .set_payload_len(size - self.ip.header_len() as usize);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 236 |         let _ = self.ip
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 244 |         self.ip.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] 244 |         let _ = self.ip.write(&mut unwritten);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tcp.rs:275:9
[INFO] [stdout]     |
[INFO] [stdout] 275 |         self.tcp.write(&mut tcp_header_buf);
[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] 275 |         let _ = self.tcp.write(&mut tcp_header_buf);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:266:9
[INFO] [stdout]     |
[INFO] [stdout] 266 |         packet_loop(nic, con_pool);
[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] 266 |         let _ = packet_loop(nic, con_pool);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "080b1d85b92527679fa9f96dc1b1a288694d0d0042f03ffd6a35d0b7e3d9c8de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "080b1d85b92527679fa9f96dc1b1a288694d0d0042f03ffd6a35d0b7e3d9c8de", kill_on_drop: false }`
[INFO] [stdout] 080b1d85b92527679fa9f96dc1b1a288694d0d0042f03ffd6a35d0b7e3d9c8de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ae5c1fc78be0c91a51dcdc7845c511103a12088f55fdb643b87b09740934788f
[INFO] running `Command { std: "docker" "start" "-a" "ae5c1fc78be0c91a51dcdc7845c511103a12088f55fdb643b87b09740934788f", kill_on_drop: false }`
[INFO] [stderr] warning: type `ConnectionPool_inner` should have an upper camel case name
[INFO] [stderr]   --> src/lib.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 | struct ConnectionPool_inner {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `ConnectionPoolInner`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated type alias `etherparse::IpTrafficClass`: Please use the type IpNumber instead
[INFO] [stderr]    --> src/tcp.rs:167:29
[INFO] [stderr]     |
[INFO] [stderr] 167 |                 etherparse::IpTrafficClass::Tcp,
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:137:5
[INFO] [stderr]     |
[INFO] [stderr] 132 | /     loop {
[INFO] [stderr] 133 | |         if let Err(e) = try_recv() {
[INFO] [stderr] 134 | |             // println!("Skip because of {}", &e);
[INFO] [stderr] 135 | |         }
[INFO] [stderr] 136 | |     }
[INFO] [stderr]     | |_____- any code following this expression is unreachable
[INFO] [stderr] 137 |       Ok(())
[INFO] [stderr]     |       ^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/tcp.rs:133:13
[INFO] [stderr]     |
[INFO] [stderr] 133 |         let buf = [0u8; 1500];
[INFO] [stderr]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/tcp.rs:131:9
[INFO] [stderr]     |
[INFO] [stderr] 131 |         data: &'a [u8],
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `iph`
[INFO] [stderr]    --> src/tcp.rs:382:9
[INFO] [stderr]     |
[INFO] [stderr] 382 |         iph: etherparse::Ipv4HeaderSlice<'a>,
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_iph`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/tcp.rs:474:25
[INFO] [stderr]     |
[INFO] [stderr] 474 |                     let mut srtt = &mut self.timers.srtt;
[INFO] [stderr]     |                         ----^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/lib.rs:133:20
[INFO] [stderr]     |
[INFO] [stderr] 133 |         if let Err(e) = try_recv() {
[INFO] [stderr]     |                    ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/lib.rs:115:21
[INFO] [stderr]     |
[INFO] [stderr] 115 |                 let a = cn.lock().unwrap().on_packet(&mut nic, iph, tcph, &buf[datai..nbytes])?;
[INFO] [stderr]     |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `listener` is never read
[INFO] [stderr]    --> src/lib.rs:178:13
[INFO] [stderr]     |
[INFO] [stderr] 178 |             listener = self.con_pool.pending_var.wait(listener).unwrap();
[INFO] [stderr]     |             ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `c` is never read
[INFO] [stderr]    --> src/lib.rs:212:13
[INFO] [stderr]     |
[INFO] [stderr] 212 |             c = var.wait(c).unwrap();
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `how`
[INFO] [stderr]    --> src/lib.rs:251:28
[INFO] [stderr]     |
[INFO] [stderr] 251 |     pub fn shutdown(&self, how: std::net::Shutdown) -> io::Result<()> {
[INFO] [stderr]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_how`
[INFO] [stderr] 
[INFO] [stderr] warning: methods `add_connection`, `get`, and `remove` are never used
[INFO] [stderr]   --> src/lib.rs:46:8
[INFO] [stderr]    |
[INFO] [stderr] 38 | impl ConnectionPool_inner {
[INFO] [stderr]    | ------------------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 46 |     fn add_connection(&self, quad:Quad, cn:Connection) -> Arc<(Mutex<Connection>, Condvar)>{
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 51 |     fn get(&self, q: &Quad) -> Option<Arc<(Mutex<Connection>, Condvar)>> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 56 |     fn remove(&self, quad:Quad) -> Option<Arc<(Mutex<Connection>, Condvar)>> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `quad` is never read
[INFO] [stderr]    --> src/lib.rs:184:5
[INFO] [stderr]     |
[INFO] [stderr] 183 | pub struct TcpStream {
[INFO] [stderr]     |            --------- field in this struct
[INFO] [stderr] 184 |     quad: Quad,
[INFO] [stderr]     |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `is_synchronized` is never used
[INFO] [stderr]   --> src/tcp.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 23 | impl State {
[INFO] [stderr]    | ---------- method in this implementation
[INFO] [stderr] 24 |     fn is_synchronized(&self) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `up`, `wl1`, and `wl2` are never read
[INFO] [stderr]   --> src/tcp.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 86 | struct SendSequenceSpace {
[INFO] [stderr]    |        ----------------- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 94 |     up: bool,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 95 |     /// segment sequence number used for last window update
[INFO] [stderr] 96 |     wl1: usize,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 97 |     /// segment acknowledgment number used for last window update
[INFO] [stderr] 98 |     wl2: usize,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `up` and `irs` are never read
[INFO] [stderr]    --> src/tcp.rs:121:5
[INFO] [stderr]     |
[INFO] [stderr] 115 | struct RecvSequenceSpace {
[INFO] [stderr]     |        ----------------- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 121 |     up: bool,
[INFO] [stderr]     |     ^^
[INFO] [stderr] 122 |     /// initial receive sequence number
[INFO] [stderr] 123 |     irs: u32,
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `send_rst` is never used
[INFO] [stderr]    --> src/tcp.rs:299:8
[INFO] [stderr]     |
[INFO] [stderr] 126 | impl Connection {
[INFO] [stderr]     | --------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 299 |     fn send_rst(&mut self, nic: &mut tun_tap::Iface) -> io::Result<()> {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate `TCPstack` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = help: convert the identifier to snake case: `tcpstack`
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/tcp.rs:236:9
[INFO] [stderr]     |
[INFO] [stderr] 236 | /         self.ip
[INFO] [stderr] 237 | |             .set_payload_len(size - self.ip.header_len() as usize);
[INFO] [stderr]     | |__________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 236 |         let _ = self.ip
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/tcp.rs:244:9
[INFO] [stderr]     |
[INFO] [stderr] 244 |         self.ip.write(&mut unwritten);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 244 |         let _ = self.ip.write(&mut unwritten);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/tcp.rs:275:9
[INFO] [stderr]     |
[INFO] [stderr] 275 |         self.tcp.write(&mut tcp_header_buf);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 275 |         let _ = self.tcp.write(&mut tcp_header_buf);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]    --> src/lib.rs:259:9
[INFO] [stderr]     |
[INFO] [stderr] 259 |     use std::time::Duration;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_packet_loop` is never used
[INFO] [stderr]    --> src/lib.rs:263:8
[INFO] [stderr]     |
[INFO] [stderr] 263 |     fn test_packet_loop() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/lib.rs:266:9
[INFO] [stderr]     |
[INFO] [stderr] 266 |         packet_loop(nic, con_pool);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 266 |         let _ = packet_loop(nic, con_pool);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `TCPstack` (lib) generated 22 warnings (run `cargo fix --lib -p TCPstack` to apply 1 suggestion)
[INFO] [stderr] warning: `TCPstack` (lib test) generated 24 warnings (21 duplicates) (run `cargo fix --lib -p TCPstack --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/TCPstack-57175933bf431db7)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/TCPstack-8ea1beffe3b3dfcb)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests TCPstack
[INFO] [stderr] warning: type `ConnectionPool_inner` should have an upper camel case name
[INFO] [stderr]   --> src/lib.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 | struct ConnectionPool_inner {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `ConnectionPoolInner`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/tcp.rs - tcp::SendSequenceSpace (line 75) ... FAILED
[INFO] [stdout] test src/tcp.rs - tcp::RecvSequenceSpace (line 105) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/tcp.rs - tcp::SendSequenceSpace (line 75) stdout ----
[INFO] [stdout] error: expected one of `.`, `;`, `?`, `}`, or an operator, found `2`
[INFO] [stdout]  --> src/tcp.rs:76:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | 1         2          3          4
[INFO] [stdout]   |           ^ expected one of `.`, `;`, `?`, `}`, or an operator
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/tcp.rs - tcp::RecvSequenceSpace (line 105) stdout ----
[INFO] [stdout] error: expected one of `.`, `;`, `?`, `}`, or an operator, found `2`
[INFO] [stdout]  --> src/tcp.rs:106:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | 1          2          3
[INFO] [stdout]   |            ^ expected one of `.`, `;`, `?`, `}`, or an operator
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/tcp.rs - tcp::RecvSequenceSpace (line 105)
[INFO] [stdout]     src/tcp.rs - tcp::SendSequenceSpace (line 75)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "ae5c1fc78be0c91a51dcdc7845c511103a12088f55fdb643b87b09740934788f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae5c1fc78be0c91a51dcdc7845c511103a12088f55fdb643b87b09740934788f", kill_on_drop: false }`
[INFO] [stdout] ae5c1fc78be0c91a51dcdc7845c511103a12088f55fdb643b87b09740934788f
