[INFO] fetching crate hole-punch-connect 0.1.0...
[INFO] testing hole-punch-connect-0.1.0 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] extracting crate hole-punch-connect 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate hole-punch-connect 0.1.0 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hole-punch-connect 0.1.0
[INFO] finished tweaking crates.io crate hole-punch-connect 0.1.0
[INFO] tweaked toml for crates.io crate hole-punch-connect 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate hole-punch-connect 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dcc5a18ee2bc9c94ff1b0835c081448ec24b7bc613cd65b02f8f42423978326f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dcc5a18ee2bc9c94ff1b0835c081448ec24b7bc613cd65b02f8f42423978326f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcc5a18ee2bc9c94ff1b0835c081448ec24b7bc613cd65b02f8f42423978326f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcc5a18ee2bc9c94ff1b0835c081448ec24b7bc613cd65b02f8f42423978326f", kill_on_drop: false }`
[INFO] [stdout] dcc5a18ee2bc9c94ff1b0835c081448ec24b7bc613cd65b02f8f42423978326f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c13bc6e72d146cbe1e08f9591e6a50cdaea1a87aa1453d4cd5bb560a9ffa004
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0c13bc6e72d146cbe1e08f9591e6a50cdaea1a87aa1453d4cd5bb560a9ffa004", kill_on_drop: false }`
[INFO] [stderr]    Compiling hole-punch-connect v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.75s
[INFO] running `Command { std: "docker" "inspect" "0c13bc6e72d146cbe1e08f9591e6a50cdaea1a87aa1453d4cd5bb560a9ffa004", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c13bc6e72d146cbe1e08f9591e6a50cdaea1a87aa1453d4cd5bb560a9ffa004", kill_on_drop: false }`
[INFO] [stdout] 0c13bc6e72d146cbe1e08f9591e6a50cdaea1a87aa1453d4cd5bb560a9ffa004
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 094b5ce119698834aa6dfdc326f16a5f7c10afcca7e58d8be72779dfc68cb0d3
[INFO] running `Command { std: "docker" "start" "-a" "094b5ce119698834aa6dfdc326f16a5f7c10afcca7e58d8be72779dfc68cb0d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling hole-punch-connect v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.21s
[INFO] running `Command { std: "docker" "inspect" "094b5ce119698834aa6dfdc326f16a5f7c10afcca7e58d8be72779dfc68cb0d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "094b5ce119698834aa6dfdc326f16a5f7c10afcca7e58d8be72779dfc68cb0d3", kill_on_drop: false }`
[INFO] [stdout] 094b5ce119698834aa6dfdc326f16a5f7c10afcca7e58d8be72779dfc68cb0d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e03ae64e69d6dbd521bf284ff5d2442f82fa1424658914b2a8780e06b9839506
[INFO] running `Command { std: "docker" "start" "-a" "e03ae64e69d6dbd521bf284ff5d2442f82fa1424658914b2a8780e06b9839506", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hole_punch_connect-37c4770ba0e770ba)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hole_punch_connect-91aa006ebe0ee809)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests hole-punch-connect
[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] [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] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/client.rs - client::HolePunchConnect::hole_punch_connect (line 69) ... FAILED
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stdout] test src/client.rs - client::HolePunchConnect::new_hole_punched (line 17) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/client.rs - client::HolePunchConnect::hole_punch_connect (line 69) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `UdpSocket`
[INFO] [stdout]  --> src/client.rs:70:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | let socket = UdpSocket::bind("0.0.0.0:0")?;
[INFO] [stdout]   |              ^^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::UdpSocket;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]    --> src/client.rs:70:42
[INFO] [stdout]     |
[INFO] [stdout] 3   |   fn main() { #[allow(non_snake_case)] fn _doctest_main_src_client_rs_69_0() {
[INFO] [stdout]     |  ______________________________________-
[INFO] [stdout] 4   | | let socket = UdpSocket::bind("0.0.0.0:0")?;
[INFO] [stdout]     | |                                          ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 5   | | socket.hole_punch_connect("domain.name:420")?;
[INFO] [stdout] 6   | | socket.send(b"Hello there")?;
[INFO] [stdout] ...   |
[INFO] [stdout] 9   | | socket.send(b"General Kenobi")?;
[INFO] [stdout] 10  | | } _doctest_main_src_client_rs_69_0() }
[INFO] [stdout]     | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<_>` is not implemented for `()`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]    --> src/client.rs:71:45
[INFO] [stdout]     |
[INFO] [stdout] 3   |   fn main() { #[allow(non_snake_case)] fn _doctest_main_src_client_rs_69_0() {
[INFO] [stdout]     |  ______________________________________-
[INFO] [stdout] 4   | | let socket = UdpSocket::bind("0.0.0.0:0")?;
[INFO] [stdout] 5   | | socket.hole_punch_connect("domain.name:420")?;
[INFO] [stdout]     | |                                             ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 6   | | socket.send(b"Hello there")?;
[INFO] [stdout] ...   |
[INFO] [stdout] 9   | | socket.send(b"General Kenobi")?;
[INFO] [stdout] 10  | | } _doctest_main_src_client_rs_69_0() }
[INFO] [stdout]     | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<_>` is not implemented for `()`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]    --> src/client.rs:72:28
[INFO] [stdout]     |
[INFO] [stdout] 3   |   fn main() { #[allow(non_snake_case)] fn _doctest_main_src_client_rs_69_0() {
[INFO] [stdout]     |  ______________________________________-
[INFO] [stdout] 4   | | let socket = UdpSocket::bind("0.0.0.0:0")?;
[INFO] [stdout] 5   | | socket.hole_punch_connect("domain.name:420")?;
[INFO] [stdout] 6   | | socket.send(b"Hello there")?;
[INFO] [stdout]     | |                            ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] ...   |
[INFO] [stdout] 9   | | socket.send(b"General Kenobi")?;
[INFO] [stdout] 10  | | } _doctest_main_src_client_rs_69_0() }
[INFO] [stdout]     | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<_>` is not implemented for `()`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]    --> src/client.rs:74:47
[INFO] [stdout]     |
[INFO] [stdout] 3   |   fn main() { #[allow(non_snake_case)] fn _doctest_main_src_client_rs_69_0() {
[INFO] [stdout]     |  ______________________________________-
[INFO] [stdout] 4   | | let socket = UdpSocket::bind("0.0.0.0:0")?;
[INFO] [stdout] 5   | | socket.hole_punch_connect("domain.name:420")?;
[INFO] [stdout] 6   | | socket.send(b"Hello there")?;
[INFO] [stdout] 7   | |
[INFO] [stdout] 8   | | socket.hole_punch_connect("other.domain:6392")?;
[INFO] [stdout]     | |                                               ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 9   | | socket.send(b"General Kenobi")?;
[INFO] [stdout] 10  | | } _doctest_main_src_client_rs_69_0() }
[INFO] [stdout]     | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<_>` is not implemented for `()`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]    --> src/client.rs:75:31
[INFO] [stdout]     |
[INFO] [stdout] 3   |   fn main() { #[allow(non_snake_case)] fn _doctest_main_src_client_rs_69_0() {
[INFO] [stdout]     |  ______________________________________-
[INFO] [stdout] 4   | | let socket = UdpSocket::bind("0.0.0.0:0")?;
[INFO] [stdout] 5   | | socket.hole_punch_connect("domain.name:420")?;
[INFO] [stdout] 6   | | socket.send(b"Hello there")?;
[INFO] [stdout] ...   |
[INFO] [stdout] 9   | | socket.send(b"General Kenobi")?;
[INFO] [stdout]     | |                               ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 10  | | } _doctest_main_src_client_rs_69_0() }
[INFO] [stdout]     | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<_>` is not implemented for `()`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/client.rs - client::HolePunchConnect::new_hole_punched (line 17) stdout ----
[INFO] [stdout] Test executable failed (exit code 1).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] Error: Custom { kind: Uncategorized, error: "failed to lookup address information: Temporary failure in name resolution" }
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/client.rs - client::HolePunchConnect::hole_punch_connect (line 69)
[INFO] [stdout]     src/client.rs - client::HolePunchConnect::new_hole_punched (line 17)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.21s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e03ae64e69d6dbd521bf284ff5d2442f82fa1424658914b2a8780e06b9839506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e03ae64e69d6dbd521bf284ff5d2442f82fa1424658914b2a8780e06b9839506", kill_on_drop: false }`
[INFO] [stdout] e03ae64e69d6dbd521bf284ff5d2442f82fa1424658914b2a8780e06b9839506