[INFO] fetching crate natpmp 0.3.2...
[INFO] testing natpmp-0.3.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate natpmp 0.3.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate natpmp 0.3.2 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate natpmp 0.3.2
[INFO] finished tweaking crates.io crate natpmp 0.3.2
[INFO] tweaked toml for crates.io crate natpmp 0.3.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate natpmp 0.3.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c76e5220087377b615462433b1b82e638935e4765fe44c5f5c95ce7d3bb35121
[INFO] running `Command { std: "docker" "start" "-a" "c76e5220087377b615462433b1b82e638935e4765fe44c5f5c95ce7d3bb35121", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c76e5220087377b615462433b1b82e638935e4765fe44c5f5c95ce7d3bb35121", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c76e5220087377b615462433b1b82e638935e4765fe44c5f5c95ce7d3bb35121", kill_on_drop: false }`
[INFO] [stdout] c76e5220087377b615462433b1b82e638935e4765fe44c5f5c95ce7d3bb35121
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43a3a4aecb6c1d625a445397721109e2c71bc29425e6b041f0dff0006caf0dff
[INFO] running `Command { std: "docker" "start" "-a" "43a3a4aecb6c1d625a445397721109e2c71bc29425e6b041f0dff0006caf0dff", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling natpmp v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.52s
[INFO] running `Command { std: "docker" "inspect" "43a3a4aecb6c1d625a445397721109e2c71bc29425e6b041f0dff0006caf0dff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43a3a4aecb6c1d625a445397721109e2c71bc29425e6b041f0dff0006caf0dff", kill_on_drop: false }`
[INFO] [stdout] 43a3a4aecb6c1d625a445397721109e2c71bc29425e6b041f0dff0006caf0dff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2fec087cb66c9e995b07f77d5ebfca995e093962ae98d29265b16595f966a618
[INFO] running `Command { std: "docker" "start" "-a" "2fec087cb66c9e995b07f77d5ebfca995e093962ae98d29265b16595f966a618", kill_on_drop: false }`
[INFO] [stderr]    Compiling natpmp v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> examples/async_udp_asyncstd.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `natpmp::*`
[INFO] [stdout]  --> examples/async_udp_asyncstd.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use natpmp::*;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> examples/async_udp_asyncstd.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `async_udp_asyncstd`
[INFO] [stdout]   --> examples/async_udp_asyncstd.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / use std::sync::Arc;
[INFO] [stdout] 2  | |
[INFO] [stdout] 3  | | use natpmp::*;
[INFO] [stdout] 4  | | use std::time::Duration;
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |     Ok(())
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `examples/async_udp_asyncstd.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `natpmp` due to 2 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2fec087cb66c9e995b07f77d5ebfca995e093962ae98d29265b16595f966a618", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fec087cb66c9e995b07f77d5ebfca995e093962ae98d29265b16595f966a618", kill_on_drop: false }`
[INFO] [stdout] 2fec087cb66c9e995b07f77d5ebfca995e093962ae98d29265b16595f966a618