[INFO] fetching crate utp2 0.1.0...
[INFO] testing utp2-0.1.0 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate utp2 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate utp2 0.1.0
[INFO] finished tweaking crates.io crate utp2 0.1.0
[INFO] tweaked toml for crates.io crate utp2 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate utp2 0.1.0 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 36 packages to latest compatible versions
[INFO] [stderr]       Adding bytes v0.4.12 (available: v1.10.1)
[INFO] [stderr]       Adding env_logger v0.4.3 (available: v0.11.8)
[INFO] [stderr]       Adding log v0.3.9 (available: v0.4.27)
[INFO] [stderr]       Adding mio v0.6.23 (available: v1.0.4)
[INFO] [stderr]       Adding rand v0.3.23 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8869df5fd5ff33d2c2e55fcbf611125c6c71abf1816e588028bdeddf5b08e7dc
[INFO] running `Command { std: "docker" "start" "-a" "8869df5fd5ff33d2c2e55fcbf611125c6c71abf1816e588028bdeddf5b08e7dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8869df5fd5ff33d2c2e55fcbf611125c6c71abf1816e588028bdeddf5b08e7dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8869df5fd5ff33d2c2e55fcbf611125c6c71abf1816e588028bdeddf5b08e7dc", kill_on_drop: false }`
[INFO] [stdout] 8869df5fd5ff33d2c2e55fcbf611125c6c71abf1816e588028bdeddf5b08e7dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 620491b70970837acb0f06fba1674c5e88880378f5b3185b60ee5dd600586558
[INFO] running `Command { std: "docker" "start" "-a" "620491b70970837acb0f06fba1674c5e88880378f5b3185b60ee5dd600586558", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.39
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling utp2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/in_queue.rs:124:25
[INFO] [stdout]     |
[INFO] [stdout] 124 |                 let n = try!(buf.read(dst));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:294:21
[INFO] [stdout]     |
[INFO] [stdout] 294 |                     try!(connection.update_readiness());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:372:17
[INFO] [stdout]     |
[INFO] [stdout] 372 |                 try!(conn.update_readiness());
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:378:17
[INFO] [stdout]     |
[INFO] [stdout] 378 |                 try!(self.listener.set_readiness(Ready::empty()));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:398:17
[INFO] [stdout]     |
[INFO] [stdout] 398 |                 try!(conn.update_readiness());
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:403:17
[INFO] [stdout]     |
[INFO] [stdout] 403 |                 try!(conn.update_readiness());
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:533:13
[INFO] [stdout]     |
[INFO] [stdout] 533 |             try!(self.connections[idx].tick(&mut self.shared));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:559:29
[INFO] [stdout]     |
[INFO] [stdout] 559 | ...                   try!(conn.process(packet, &mut self.shared))
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:654:9
[INFO] [stdout]     |
[INFO] [stdout] 654 |         try!(self.listener.set_readiness(Ready::readable()));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:665:29
[INFO] [stdout]     |
[INFO] [stdout] 665 |             let (n, addr) = try!(self.shared.socket.recv_from(self.in_buf.bytes_mut()));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:671:22
[INFO] [stdout]     |
[INFO] [stdout] 671 |         let packet = try!(Packet::parse(self.in_buf.take()));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:800:9
[INFO] [stdout]     |
[INFO] [stdout] 800 |         try!(self.update_readiness());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:728:13
[INFO] [stdout]     |
[INFO] [stdout] 728 |             try!(self.update_readiness());
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/out_queue.rs:260:17
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn next(&mut self) -> Option<Next> {
[INFO] [stdout]     |                 ^^^^^^^^^            ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn next(&mut self) -> Option<Next<'_>> {
[INFO] [stdout]     |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.00s
[INFO] running `Command { std: "docker" "inspect" "620491b70970837acb0f06fba1674c5e88880378f5b3185b60ee5dd600586558", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "620491b70970837acb0f06fba1674c5e88880378f5b3185b60ee5dd600586558", kill_on_drop: false }`
[INFO] [stdout] 620491b70970837acb0f06fba1674c5e88880378f5b3185b60ee5dd600586558
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b15619b72d98f73dbc06121aee2fe8e1589a043f140df3d21d255d1d3a58e7b
[INFO] running `Command { std: "docker" "start" "-a" "0b15619b72d98f73dbc06121aee2fe8e1589a043f140df3d21d255d1d3a58e7b", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling ucd-util v0.1.10
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling utf8-ranges v1.0.5
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/in_queue.rs:124:25
[INFO] [stdout]     |
[INFO] [stdout] 124 |                 let n = try!(buf.read(dst));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:294:21
[INFO] [stdout]     |
[INFO] [stdout] 294 |                     try!(connection.update_readiness());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:372:17
[INFO] [stdout]     |
[INFO] [stdout] 372 |                 try!(conn.update_readiness());
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:378:17
[INFO] [stdout]     |
[INFO] [stdout] 378 |                 try!(self.listener.set_readiness(Ready::empty()));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:398:17
[INFO] [stdout]     |
[INFO] [stdout] 398 |                 try!(conn.update_readiness());
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:403:17
[INFO] [stdout]     |
[INFO] [stdout] 403 |                 try!(conn.update_readiness());
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:533:13
[INFO] [stdout]     |
[INFO] [stdout] 533 |             try!(self.connections[idx].tick(&mut self.shared));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:559:29
[INFO] [stdout]     |
[INFO] [stdout] 559 | ...                   try!(conn.process(packet, &mut self.shared))
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:654:9
[INFO] [stdout]     |
[INFO] [stdout] 654 |         try!(self.listener.set_readiness(Ready::readable()));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:665:29
[INFO] [stdout]     |
[INFO] [stdout] 665 |             let (n, addr) = try!(self.shared.socket.recv_from(self.in_buf.bytes_mut()));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:671:22
[INFO] [stdout]     |
[INFO] [stdout] 671 |         let packet = try!(Packet::parse(self.in_buf.take()));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:800:9
[INFO] [stdout]     |
[INFO] [stdout] 800 |         try!(self.update_readiness());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:728:13
[INFO] [stdout]     |
[INFO] [stdout] 728 |             try!(self.update_readiness());
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/out_queue.rs:260:17
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn next(&mut self) -> Option<Next> {
[INFO] [stdout]     |                 ^^^^^^^^^            ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn next(&mut self) -> Option<Next<'_>> {
[INFO] [stdout]     |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling env_logger v0.4.3
[INFO] [stderr]    Compiling utp2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `utp`
[INFO] [stdout]  --> examples/client.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate utp;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `UtpSocket`
[INFO] [stdout]   --> examples/client.rs:16:23
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let (socket, _) = UtpSocket::bind(&local_addr).unwrap();
[INFO] [stdout]    |                       ^^^^^^^^^ use of undeclared type `UtpSocket`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `utp`
[INFO] [stdout]  --> examples/server.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate utp;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0463.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `utp2` (example "client") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `UtpSocket`
[INFO] [stdout]   --> examples/server.rs:30:30
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let (socket, listener) = UtpSocket::bind(&addr).unwrap();
[INFO] [stdout]    |                              ^^^^^^^^^ use of undeclared type `UtpSocket`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> examples/server.rs:16:29
[INFO] [stdout]    |
[INFO] [stdout] 16 |             Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {
[INFO] [stdout]    |                             ^^^^ cannot infer type
[INFO] [stdout] ...
[INFO] [stdout] 56 |                         let sock = unwrap_nb!(listener.accept());
[INFO] [stdout]    |                                    ----------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `unwrap_nb` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> examples/server.rs:16:29
[INFO] [stdout]    |
[INFO] [stdout] 16 |             Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {
[INFO] [stdout]    |                             ^^^^ cannot infer type
[INFO] [stdout] ...
[INFO] [stdout] 71 |                             let n = unwrap_nb!(connections[&token].read(&mut buf));
[INFO] [stdout]    |                                     ---------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `unwrap_nb` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/in_queue.rs:124:25
[INFO] [stdout]     |
[INFO] [stdout] 124 |                 let n = try!(buf.read(dst));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:294:21
[INFO] [stdout]     |
[INFO] [stdout] 294 |                     try!(connection.update_readiness());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:372:17
[INFO] [stdout]     |
[INFO] [stdout] 372 |                 try!(conn.update_readiness());
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:378:17
[INFO] [stdout]     |
[INFO] [stdout] 378 |                 try!(self.listener.set_readiness(Ready::empty()));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:398:17
[INFO] [stdout]     |
[INFO] [stdout] 398 |                 try!(conn.update_readiness());
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:403:17
[INFO] [stdout]     |
[INFO] [stdout] 403 |                 try!(conn.update_readiness());
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:533:13
[INFO] [stdout]     |
[INFO] [stdout] 533 |             try!(self.connections[idx].tick(&mut self.shared));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:559:29
[INFO] [stdout]     |
[INFO] [stdout] 559 | ...                   try!(conn.process(packet, &mut self.shared))
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:654:9
[INFO] [stdout]     |
[INFO] [stdout] 654 |         try!(self.listener.set_readiness(Ready::readable()));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:665:29
[INFO] [stdout]     |
[INFO] [stdout] 665 |             let (n, addr) = try!(self.shared.socket.recv_from(self.in_buf.bytes_mut()));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:671:22
[INFO] [stdout]     |
[INFO] [stdout] 671 |         let packet = try!(Packet::parse(self.in_buf.take()));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:800:9
[INFO] [stdout]     |
[INFO] [stdout] 800 |         try!(self.update_readiness());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/socket.rs:728:13
[INFO] [stdout]     |
[INFO] [stdout] 728 |             try!(self.update_readiness());
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0433, E0463.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `utp2` (example "server") due to 4 previous errors
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/out_queue.rs:260:17
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn next(&mut self) -> Option<Next> {
[INFO] [stdout]     |                 ^^^^^^^^^            ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn next(&mut self) -> Option<Next<'_>> {
[INFO] [stdout]     |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0b15619b72d98f73dbc06121aee2fe8e1589a043f140df3d21d255d1d3a58e7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b15619b72d98f73dbc06121aee2fe8e1589a043f140df3d21d255d1d3a58e7b", kill_on_drop: false }`
[INFO] [stdout] 0b15619b72d98f73dbc06121aee2fe8e1589a043f140df3d21d255d1d3a58e7b