[INFO] fetching crate deflate-cpp-bindings 0.1.0-prerelease...
[INFO] checking deflate-cpp-bindings-0.1.0-prerelease against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate deflate-cpp-bindings 0.1.0-prerelease into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate deflate-cpp-bindings 0.1.0-prerelease
[INFO] finished tweaking crates.io crate deflate-cpp-bindings 0.1.0-prerelease
[INFO] tweaked toml for crates.io crate deflate-cpp-bindings 0.1.0-prerelease written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate deflate-cpp-bindings 0.1.0-prerelease 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 deflate-cpp-bindings 0.1.0-prerelease 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] [stderr] warning: Cargo.toml: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr] warning: `deflate-cpp-bindings` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 4363c8a4a4e37774109a67ab16a835f965b791ad791fd5bafcf2f83edcd7df53
[INFO] running `Command { std: "docker" "start" "4363c8a4a4e37774109a67ab16a835f965b791ad791fd5bafcf2f83edcd7df53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4363c8a4a4e37774109a67ab16a835f965b791ad791fd5bafcf2f83edcd7df53", 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" "4363c8a4a4e37774109a67ab16a835f965b791ad791fd5bafcf2f83edcd7df53" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4363c8a4a4e37774109a67ab16a835f965b791ad791fd5bafcf2f83edcd7df53", 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" "4363c8a4a4e37774109a67ab16a835f965b791ad791fd5bafcf2f83edcd7df53" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr] warning: `deflate-cpp-bindings` (manifest) generated 1 warning
[INFO] [stderr]    Compiling crc32fast v1.5.1
[INFO] [stderr]     Checking miniz_oxide v0.9.1
[INFO] [stderr]     Checking flate2 v1.1.10
[INFO] [stderr]     Checking deflate-cpp-bindings v0.1.0-prerelease (/opt/rustwide/workdir)
[INFO] [stdout] error: useless conversion to the same type: `Option<GzHeader>`
[INFO] [stdout]   --> rust/gz/read.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |         None => None.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] 27 -         None => None.into(),
[INFO] [stdout] 27 +         None => None,
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 27 -         None => None.into(),
[INFO] [stdout] 27 +         None => <Option<GzHeader> as Into<_>>::into(None),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `Option<GzHeader>`
[INFO] [stdout]   --> rust/gz/read.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |         None => None.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] 27 -         None => None.into(),
[INFO] [stdout] 27 +         None => None,
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 27 -         None => None.into(),
[INFO] [stdout] 27 +         None => <Option<GzHeader> as Into<_>>::into(None),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `Option<GzHeader>`
[INFO] [stdout]   --> rust/gz/write.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |         None => None.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] 25 -         None => None.into(),
[INFO] [stdout] 25 +         None => None,
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 25 -         None => None.into(),
[INFO] [stdout] 25 +         None => <Option<GzHeader> as Into<_>>::into(None),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `Option<GzHeader>`
[INFO] [stdout]   --> rust/gz/write.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |         None => None.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] 25 -         None => None.into(),
[INFO] [stdout] 25 +         None => None,
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 25 -         None => None.into(),
[INFO] [stdout] 25 +         None => <Option<GzHeader> as Into<_>>::into(None),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `deflate-cpp-bindings` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `deflate-cpp-bindings` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "4363c8a4a4e37774109a67ab16a835f965b791ad791fd5bafcf2f83edcd7df53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4363c8a4a4e37774109a67ab16a835f965b791ad791fd5bafcf2f83edcd7df53", kill_on_drop: false }`
[INFO] [stdout] 4363c8a4a4e37774109a67ab16a835f965b791ad791fd5bafcf2f83edcd7df53
