[INFO] cloning repository https://github.com/breed/punnel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/breed/punnel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreed%2Fpunnel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreed%2Fpunnel'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreed%2Fpunnel: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/breed/punnel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/breed/punnel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreed%2Fpunnel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreed%2Fpunnel'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreed%2Fpunnel: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 2)
[INFO] cloning repository https://github.com/breed/punnel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/breed/punnel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreed%2Fpunnel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreed%2Fpunnel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 47dd7c90b93629ca61d041d753111bd24c1d60cc
[INFO] checking breed/punnel/47dd7c90b93629ca61d041d753111bd24c1d60cc against master#39cb3386ddc6c71657418be28dbb3987eea4aa4b for pr-133536
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreed%2Fpunnel" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/breed/punnel on toolchain 39cb3386ddc6c71657418be28dbb3987eea4aa4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/breed/punnel
[INFO] finished tweaking git repo https://github.com/breed/punnel
[INFO] tweaked toml for git repo https://github.com/breed/punnel written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/breed/punnel 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" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-core v0.1.3
[INFO] [stderr]   Downloaded unicode-segmentation v1.0.1
[INFO] [stderr]   Downloaded futures v0.1.7
[INFO] [stderr]   Downloaded mio v0.6.2
[INFO] [stderr]   Downloaded clap v2.20.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 073cf79f8f25478385915ade5afa5148b5ddc3ac3d75627e9878d6074b4fea5a
[INFO] running `Command { std: "docker" "start" "-a" "073cf79f8f25478385915ade5afa5148b5ddc3ac3d75627e9878d6074b4fea5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "073cf79f8f25478385915ade5afa5148b5ddc3ac3d75627e9878d6074b4fea5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "073cf79f8f25478385915ade5afa5148b5ddc3ac3d75627e9878d6074b4fea5a", kill_on_drop: false }`
[INFO] [stdout] 073cf79f8f25478385915ade5afa5148b5ddc3ac3d75627e9878d6074b4fea5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af476137d75dbfda38446ff155cc7f47713d556629cdc7a33e712deb62304aa8
[INFO] running `Command { std: "docker" "start" "-a" "af476137d75dbfda38446ff155cc7f47713d556629cdc7a33e712deb62304aa8", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Checking libc v0.2.18
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking cfg-if v0.1.0
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking vec_map v0.6.0
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking futures v0.1.7
[INFO] [stderr]     Checking unicode-segmentation v1.0.1
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking term_size v0.2.1
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]     Checking clap v2.20.0
[INFO] [stderr]     Checking mio v0.6.2
[INFO] [stderr]     Checking tokio-core v0.1.3
[INFO] [stderr]     Checking punnel v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Shutdown`
[INFO] [stdout]   --> src/main.rs:11:52
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::net::{Ipv6Addr, SocketAddr, SocketAddrV6, Shutdown};
[INFO] [stdout]    |                                                    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Codec` and `Framed`
[INFO] [stdout]   --> src/main.rs:13:26
[INFO] [stdout]    |
[INFO] [stdout] 13 | use tokio_core::io::{Io, Codec, Framed};
[INFO] [stdout]    |                          ^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 21 | type BoxedPunnelFrameSink = Box<Sink<SinkItem = PunnelFrame, SinkError = io::Error>>;
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 21 | type BoxedPunnelFrameSink = Box<dyn Sink<SinkItem = PunnelFrame, SinkError = io::Error>>;
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:22:35
[INFO] [stdout]    |
[INFO] [stdout] 22 | type BoxedPunnelFrameStream = Box<Stream<Item = PunnelFrame, Error = io::Error>>;
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 | type BoxedPunnelFrameStream = Box<dyn Stream<Item = PunnelFrame, Error = io::Error>>;
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Future`
[INFO] [stdout]  --> src/main.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::{Future, Sink};
[INFO] [stdout]   |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cnxn`
[INFO] [stdout]   --> src/main.rs:73:21
[INFO] [stdout]    |
[INFO] [stdout] 73 |         if let Some(cnxn) = self.connections.remove(&id) {
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_cnxn`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stream`
[INFO] [stdout]    --> src/main.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let stream = self.tunnel_stream.and_then(|connect_frame| {
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_stream`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `write_stream`
[INFO] [stdout]    --> src/main.rs:120:17
[INFO] [stdout]     |
[INFO] [stdout] 120 |             let write_stream = cnxn.clone();
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_write_stream`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `read_stream`
[INFO] [stdout]    --> src/main.rs:121:17
[INFO] [stdout]     |
[INFO] [stdout] 121 |             let read_stream = cnxn.clone();
[INFO] [stdout]     |                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_read_stream`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `seq`
[INFO] [stdout]    --> src/main.rs:119:29
[INFO] [stdout]     |
[INFO] [stdout] 119 |         }).and_then(|(cnxn, seq)| {
[INFO] [stdout]     |                             ^^^ help: if this is intentional, prefix it with an underscore: `_seq`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `local_port`
[INFO] [stdout]    --> src/main.rs:132:14
[INFO] [stdout]     |
[INFO] [stdout] 132 | fn do_client(local_port: SocketAddr, server_host_port: SocketAddr) {}
[INFO] [stdout]     |              ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_local_port`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `server_host_port`
[INFO] [stdout]    --> src/main.rs:132:38
[INFO] [stdout]     |
[INFO] [stdout] 132 | fn do_client(local_port: SocketAddr, server_host_port: SocketAddr) {}
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_server_host_port`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `seq`
[INFO] [stdout]    --> src/main.rs:142:45
[INFO] [stdout]     |
[INFO] [stdout] 142 |             if let PunnelFrame::Connect{id, seq} = p {
[INFO] [stdout]     |                                             ^^^ help: try ignoring the field: `seq: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `connect_to_port`
[INFO] [stdout]    --> src/main.rs:156:14
[INFO] [stdout]     |
[INFO] [stdout] 156 | fn do_server(connect_to_port: SocketAddr) {
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_connect_to_port`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]    --> src/main.rs:162:53
[INFO] [stdout]     |
[INFO] [stdout] 162 |             Ok(listener.incoming().for_each(|(cnxn, addr)| {
[INFO] [stdout]     |                                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 159 |     let mut local_port: SocketAddr = SocketAddr::V6(SocketAddrV6::new(get_inaddr_any(), 0, 0, 0));
[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: `sub_matches`
[INFO] [stdout]    --> src/main.rs:197:25
[INFO] [stdout]     |
[INFO] [stdout] 197 |         ("client", Some(sub_matches)) => {
[INFO] [stdout]     |                         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sub_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sub_matches`
[INFO] [stdout]    --> src/main.rs:202:25
[INFO] [stdout]     |
[INFO] [stdout] 202 |         ("server", Some(sub_matches)) => {
[INFO] [stdout]     |                         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sub_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ToBeAcked` is never constructed
[INFO] [stdout]   --> src/main.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct ToBeAcked {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Connection` is never constructed
[INFO] [stdout]   --> src/main.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Connection {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ConnectionRegistry` is never constructed
[INFO] [stdout]   --> src/main.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct ConnectionRegistry {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `register`, `add`, `get_connection`, and `close` are never used
[INFO] [stdout]   --> src/main.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl ConnectionRegistry {
[INFO] [stdout]    | ----------------------- methods in this implementation
[INFO] [stdout] 42 |     // for use by the server to add a connection
[INFO] [stdout] 43 |     fn register(&mut self, tcp_stream: TcpStream) -> Arc<Connection> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     fn add(&mut self, id: u32, tcp_stream: TcpStream) -> Arc<Connection> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     fn get_connection(&self, id: u32) -> Option<&Arc<Connection>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     fn close(&mut self, id: u32) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ConnectedConnection` is never constructed
[INFO] [stdout]   --> src/main.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | struct ConnectedConnection {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `tunnel` are never used
[INFO] [stdout]    --> src/main.rs:87:8
[INFO] [stdout]     |
[INFO] [stdout] 86  | impl ConnectedConnection {
[INFO] [stdout]     | ------------------------ associated items in this implementation
[INFO] [stdout] 87  |     fn new(registry: Rc<ConnectionRegistry>,
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     fn tunnel(self) -> Result<(), io::Error> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tunnel_sink` is never read
[INFO] [stdout]    --> src/main.rs:135:5
[INFO] [stdout]     |
[INFO] [stdout] 134 | struct IncomingConnection {
[INFO] [stdout]     |        ------------------ field in this struct
[INFO] [stdout] 135 |     tunnel_sink: BoxedPunnelFrameSink,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `futures::stream::AndThen` that must be used
[INFO] [stdout]    --> src/main.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 | /         self.tunnel_stream.and_then(|p| {
[INFO] [stdout] 142 | |             if let PunnelFrame::Connect{id, seq} = p {
[INFO] [stdout] 143 | |                 if id == 0 {
[INFO] [stdout] 144 | |                     // create a new session
[INFO] [stdout] ...   |
[INFO] [stdout] 151 | |             }
[INFO] [stdout] 152 | |         });
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: streams do nothing unless polled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 141 |         let _ = self.tunnel_stream.and_then(|p| {
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:206:16
[INFO] [stdout]     |
[INFO] [stdout] 206 |         _ => { app.print_help(); }
[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] 206 |         _ => { let _ = app.print_help(); }
[INFO] [stdout]     |                +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Shutdown`
[INFO] [stdout]   --> src/main.rs:11:52
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::net::{Ipv6Addr, SocketAddr, SocketAddrV6, Shutdown};
[INFO] [stdout]    |                                                    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Codec` and `Framed`
[INFO] [stdout]   --> src/main.rs:13:26
[INFO] [stdout]    |
[INFO] [stdout] 13 | use tokio_core::io::{Io, Codec, Framed};
[INFO] [stdout]    |                          ^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 21 | type BoxedPunnelFrameSink = Box<Sink<SinkItem = PunnelFrame, SinkError = io::Error>>;
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 21 | type BoxedPunnelFrameSink = Box<dyn Sink<SinkItem = PunnelFrame, SinkError = io::Error>>;
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:22:35
[INFO] [stdout]    |
[INFO] [stdout] 22 | type BoxedPunnelFrameStream = Box<Stream<Item = PunnelFrame, Error = io::Error>>;
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 | type BoxedPunnelFrameStream = Box<dyn Stream<Item = PunnelFrame, Error = io::Error>>;
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Future`
[INFO] [stdout]  --> src/main.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::{Future, Sink};
[INFO] [stdout]   |               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cnxn`
[INFO] [stdout]   --> src/main.rs:73:21
[INFO] [stdout]    |
[INFO] [stdout] 73 |         if let Some(cnxn) = self.connections.remove(&id) {
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_cnxn`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stream`
[INFO] [stdout]    --> src/main.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let stream = self.tunnel_stream.and_then(|connect_frame| {
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_stream`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `write_stream`
[INFO] [stdout]    --> src/main.rs:120:17
[INFO] [stdout]     |
[INFO] [stdout] 120 |             let write_stream = cnxn.clone();
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_write_stream`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `read_stream`
[INFO] [stdout]    --> src/main.rs:121:17
[INFO] [stdout]     |
[INFO] [stdout] 121 |             let read_stream = cnxn.clone();
[INFO] [stdout]     |                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_read_stream`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `seq`
[INFO] [stdout]    --> src/main.rs:119:29
[INFO] [stdout]     |
[INFO] [stdout] 119 |         }).and_then(|(cnxn, seq)| {
[INFO] [stdout]     |                             ^^^ help: if this is intentional, prefix it with an underscore: `_seq`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `local_port`
[INFO] [stdout]    --> src/main.rs:132:14
[INFO] [stdout]     |
[INFO] [stdout] 132 | fn do_client(local_port: SocketAddr, server_host_port: SocketAddr) {}
[INFO] [stdout]     |              ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_local_port`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `server_host_port`
[INFO] [stdout]    --> src/main.rs:132:38
[INFO] [stdout]     |
[INFO] [stdout] 132 | fn do_client(local_port: SocketAddr, server_host_port: SocketAddr) {}
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_server_host_port`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `seq`
[INFO] [stdout]    --> src/main.rs:142:45
[INFO] [stdout]     |
[INFO] [stdout] 142 |             if let PunnelFrame::Connect{id, seq} = p {
[INFO] [stdout]     |                                             ^^^ help: try ignoring the field: `seq: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `connect_to_port`
[INFO] [stdout]    --> src/main.rs:156:14
[INFO] [stdout]     |
[INFO] [stdout] 156 | fn do_server(connect_to_port: SocketAddr) {
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_connect_to_port`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]    --> src/main.rs:162:53
[INFO] [stdout]     |
[INFO] [stdout] 162 |             Ok(listener.incoming().for_each(|(cnxn, addr)| {
[INFO] [stdout]     |                                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 159 |     let mut local_port: SocketAddr = SocketAddr::V6(SocketAddrV6::new(get_inaddr_any(), 0, 0, 0));
[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: `sub_matches`
[INFO] [stdout]    --> src/main.rs:197:25
[INFO] [stdout]     |
[INFO] [stdout] 197 |         ("client", Some(sub_matches)) => {
[INFO] [stdout]     |                         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sub_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sub_matches`
[INFO] [stdout]    --> src/main.rs:202:25
[INFO] [stdout]     |
[INFO] [stdout] 202 |         ("server", Some(sub_matches)) => {
[INFO] [stdout]     |                         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sub_matches`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ToBeAcked` is never constructed
[INFO] [stdout]   --> src/main.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct ToBeAcked {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Connection` is never constructed
[INFO] [stdout]   --> src/main.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Connection {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ConnectionRegistry` is never constructed
[INFO] [stdout]   --> src/main.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct ConnectionRegistry {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `register`, `add`, `get_connection`, and `close` are never used
[INFO] [stdout]   --> src/main.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl ConnectionRegistry {
[INFO] [stdout]    | ----------------------- methods in this implementation
[INFO] [stdout] 42 |     // for use by the server to add a connection
[INFO] [stdout] 43 |     fn register(&mut self, tcp_stream: TcpStream) -> Arc<Connection> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     fn add(&mut self, id: u32, tcp_stream: TcpStream) -> Arc<Connection> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     fn get_connection(&self, id: u32) -> Option<&Arc<Connection>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     fn close(&mut self, id: u32) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `punnel` (bin "punnel" test); 22 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to parse process output: `/opt/rustwide/rustup-home/toolchains/39cb3386ddc6c71657418be28dbb3987eea4aa4b/bin/rustc --crate-name punnel --edition=2015 src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --test --check-cfg 'cfg(docsrs)' --check-cfg 'cfg(feature, values())' -C metadata=6a7a0cb2d81be471 -C extra-filename=-6a7a0cb2d81be471 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-c4d25ca0b1050470.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-fc050e56a244f7df.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-4efd405b5a3a6539.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-d49e8b3988b2db93.rmeta --extern tokio_core=/opt/rustwide/target/debug/deps/libtokio_core-4bab3ad754da540e.rmeta --cap-lints=forbid` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "af476137d75dbfda38446ff155cc7f47713d556629cdc7a33e712deb62304aa8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af476137d75dbfda38446ff155cc7f47713d556629cdc7a33e712deb62304aa8", kill_on_drop: false }`
[INFO] [stdout] af476137d75dbfda38446ff155cc7f47713d556629cdc7a33e712deb62304aa8
