[INFO] fetching crate nbio 0.22.1...
[INFO] checking nbio-0.22.1 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate nbio 0.22.1 into /workspace/builds/worker-4-tc2/source
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate nbio 0.22.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate nbio 0.22.1
[INFO] tweaked toml for crates.io crate nbio 0.22.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate nbio 0.22.1 on toolchain a5689b034ad287112f709693384a37f1377eb9cc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nbio 0.22.1 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" "+a5689b034ad287112f709693384a37f1377eb9cc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 5344de410f9af233cd956a43e7ba3bff363a3487590ac31af42e4aa7911f6949
[INFO] running `Command { std: "docker" "start" "5344de410f9af233cd956a43e7ba3bff363a3487590ac31af42e4aa7911f6949", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5344de410f9af233cd956a43e7ba3bff363a3487590ac31af42e4aa7911f6949", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5344de410f9af233cd956a43e7ba3bff363a3487590ac31af42e4aa7911f6949" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5344de410f9af233cd956a43e7ba3bff363a3487590ac31af42e4aa7911f6949", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5344de410f9af233cd956a43e7ba3bff363a3487590ac31af42e4aa7911f6949" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
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[INFO] [stderr]    Compiling der_derive v0.7.3
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[INFO] [stderr]    Compiling asn1-rs-impl v0.2.0
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[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]     Checking der v0.7.10
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[INFO] [stderr]     Checking pkcs5 v0.7.1
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[INFO] [stderr]     Checking nbio v0.22.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: useless conversion to the same type: `std::io::Error`
[INFO] [stdout]    --> src/tcp.rs:401:32
[INFO] [stdout]     |
[INFO] [stdout] 401 |                     return Err(err.into());
[INFO] [stdout]     |                                ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 401 -                     return Err(err.into());
[INFO] [stdout] 401 +                     return Err(err);
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 401 -                     return Err(err.into());
[INFO] [stdout] 401 +                     return Err(<std::io::Error as Into<_>>::into(err));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `std::io::Error`
[INFO] [stdout]    --> src/tcp.rs:465:32
[INFO] [stdout]     |
[INFO] [stdout] 465 |                     return Err(err.into());
[INFO] [stdout]     |                                ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 465 -                     return Err(err.into());
[INFO] [stdout] 465 +                     return Err(err);
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 465 -                     return Err(err.into());
[INFO] [stdout] 465 +                     return Err(<std::io::Error as Into<_>>::into(err));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nbio` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: useless conversion to the same type: `std::io::Error`
[INFO] [stdout]    --> src/tcp.rs:401:32
[INFO] [stdout]     |
[INFO] [stdout] 401 |                     return Err(err.into());
[INFO] [stdout]     |                                ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 401 -                     return Err(err.into());
[INFO] [stdout] 401 +                     return Err(err);
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 401 -                     return Err(err.into());
[INFO] [stdout] 401 +                     return Err(<std::io::Error as Into<_>>::into(err));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `std::io::Error`
[INFO] [stdout]    --> src/tcp.rs:465:32
[INFO] [stdout]     |
[INFO] [stdout] 465 |                     return Err(err.into());
[INFO] [stdout]     |                                ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 465 -                     return Err(err.into());
[INFO] [stdout] 465 +                     return Err(err);
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 465 -                     return Err(err.into());
[INFO] [stdout] 465 +                     return Err(<std::io::Error as Into<_>>::into(err));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nbio` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "5344de410f9af233cd956a43e7ba3bff363a3487590ac31af42e4aa7911f6949", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5344de410f9af233cd956a43e7ba3bff363a3487590ac31af42e4aa7911f6949", kill_on_drop: false }`
[INFO] [stdout] 5344de410f9af233cd956a43e7ba3bff363a3487590ac31af42e4aa7911f6949
