[INFO] fetching crate optional_struct 0.2.0...
[INFO] testing optional_struct-0.2.0 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate optional_struct 0.2.0 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate optional_struct 0.2.0 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate optional_struct 0.2.0
[INFO] finished tweaking crates.io crate optional_struct 0.2.0
[INFO] tweaked toml for crates.io crate optional_struct 0.2.0 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a04705da34e1b803b7ffdecab6a1847caeb722866745b3d380f4f242a9233d00
[INFO] running `Command { std: "docker" "start" "-a" "a04705da34e1b803b7ffdecab6a1847caeb722866745b3d380f4f242a9233d00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a04705da34e1b803b7ffdecab6a1847caeb722866745b3d380f4f242a9233d00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a04705da34e1b803b7ffdecab6a1847caeb722866745b3d380f4f242a9233d00", kill_on_drop: false }`
[INFO] [stdout] a04705da34e1b803b7ffdecab6a1847caeb722866745b3d380f4f242a9233d00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 855d1ce9f0f5657cab108b4e4720d30e8dd93b2364feda8de4c5f142d09c0194
[INFO] running `Command { std: "docker" "start" "-a" "855d1ce9f0f5657cab108b4e4720d30e8dd93b2364feda8de4c5f142d09c0194", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling optional_struct v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.08s
[INFO] running `Command { std: "docker" "inspect" "855d1ce9f0f5657cab108b4e4720d30e8dd93b2364feda8de4c5f142d09c0194", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "855d1ce9f0f5657cab108b4e4720d30e8dd93b2364feda8de4c5f142d09c0194", kill_on_drop: false }`
[INFO] [stdout] 855d1ce9f0f5657cab108b4e4720d30e8dd93b2364feda8de4c5f142d09c0194
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ffcda834b716722ec7e153a116d9c2b2dc895296b35fb58fc829fb3b570b794f
[INFO] running `Command { std: "docker" "start" "-a" "ffcda834b716722ec7e153a116d9c2b2dc895296b35fb58fc829fb3b570b794f", kill_on_drop: false }`
[INFO] [stderr]    Compiling optional_struct v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Config`
[INFO] [stdout]  --> tests/empty.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Config {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "ffcda834b716722ec7e153a116d9c2b2dc895296b35fb58fc829fb3b570b794f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffcda834b716722ec7e153a116d9c2b2dc895296b35fb58fc829fb3b570b794f", kill_on_drop: false }`
[INFO] [stdout] ffcda834b716722ec7e153a116d9c2b2dc895296b35fb58fc829fb3b570b794f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a60302cafd867eaba6960a72d445ce65d174befaaa0f693e448063af76aa51b2
[INFO] running `Command { std: "docker" "start" "-a" "a60302cafd867eaba6960a72d445ce65d174befaaa0f693e448063af76aa51b2", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: struct is never constructed: `Config`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> tests/empty.rs:5:8
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 5 | struct Config {
[INFO] [stdout] 
[INFO] [stderr]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] running 1 test
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] test test_apply_options ... ok
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/optional_struct-ad28db8ae3ecfee7)
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/derive.rs (/opt/rustwide/target/debug/deps/derive-382172faf5872f51)
[INFO] [stderr]      Running tests/empty.rs (/opt/rustwide/target/debug/deps/empty-8973b5f12a82f98a)
[INFO] [stdout] test test_apply_options ... ok
[INFO] [stderr]      Running tests/generics.rs (/opt/rustwide/target/debug/deps/generics-8aeb186a654ccae7)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/nested.rs (/opt/rustwide/target/debug/deps/nested-6a8dfd5a2b0a7169)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_apply_options ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/renamed.rs (/opt/rustwide/target/debug/deps/renamed-38addc081a5b42c7)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/simple.rs (/opt/rustwide/target/debug/deps/simple-80d5514f6d7be7dc)
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests optional_struct
[INFO] [stdout] test test_apply_options ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_apply_options ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_apply_options ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 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] running `Command { std: "docker" "inspect" "a60302cafd867eaba6960a72d445ce65d174befaaa0f693e448063af76aa51b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a60302cafd867eaba6960a72d445ce65d174befaaa0f693e448063af76aa51b2", kill_on_drop: false }`
[INFO] [stdout] a60302cafd867eaba6960a72d445ce65d174befaaa0f693e448063af76aa51b2