[INFO] fetching crate natpmp 0.3.2...
[INFO] testing natpmp-0.3.2 against 1.59.0 for beta-1.60-1
[INFO] extracting crate natpmp 0.3.2 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate natpmp 0.3.2 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-28/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" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fdad44558862affdc1bdd361fee5d3c5927ce3ec93754cf90978535fd235f2a2
[INFO] running `Command { std: "docker" "start" "-a" "fdad44558862affdc1bdd361fee5d3c5927ce3ec93754cf90978535fd235f2a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fdad44558862affdc1bdd361fee5d3c5927ce3ec93754cf90978535fd235f2a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdad44558862affdc1bdd361fee5d3c5927ce3ec93754cf90978535fd235f2a2", kill_on_drop: false }`
[INFO] [stdout] fdad44558862affdc1bdd361fee5d3c5927ce3ec93754cf90978535fd235f2a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07ab84eca01ed318b76ddb4aa417f147d8e50e8e8d1026e19eb6501d062a273c
[INFO] running `Command { std: "docker" "start" "-a" "07ab84eca01ed318b76ddb4aa417f147d8e50e8e8d1026e19eb6501d062a273c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling natpmp v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling parking_lot v0.11.2
[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 11.07s
[INFO] running `Command { std: "docker" "inspect" "07ab84eca01ed318b76ddb4aa417f147d8e50e8e8d1026e19eb6501d062a273c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07ab84eca01ed318b76ddb4aa417f147d8e50e8e8d1026e19eb6501d062a273c", kill_on_drop: false }`
[INFO] [stdout] 07ab84eca01ed318b76ddb4aa417f147d8e50e8e8d1026e19eb6501d062a273c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 553b7655879f1f29e5b332467830e22c01615ec288b661497093dd0e41ccac32
[INFO] running `Command { std: "docker" "start" "-a" "553b7655879f1f29e5b332467830e22c01615ec288b661497093dd0e41ccac32", 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" "553b7655879f1f29e5b332467830e22c01615ec288b661497093dd0e41ccac32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "553b7655879f1f29e5b332467830e22c01615ec288b661497093dd0e41ccac32", kill_on_drop: false }`
[INFO] [stdout] 553b7655879f1f29e5b332467830e22c01615ec288b661497093dd0e41ccac32