[INFO] fetching crate optional-fields-serde-macro 0.1.0...
[INFO] testing optional-fields-serde-macro-0.1.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate optional-fields-serde-macro 0.1.0 into /workspace/builds/worker-23/source
[INFO] validating manifest of crates.io crate optional-fields-serde-macro 0.1.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate optional-fields-serde-macro 0.1.0
[INFO] finished tweaking crates.io crate optional-fields-serde-macro 0.1.0
[INFO] tweaked toml for crates.io crate optional-fields-serde-macro 0.1.0 written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6a1dd6ab99b91d603d9cafc64a79e6c36cd2d0ff7363ffce29a1255379758de
[INFO] running `Command { std: "docker" "start" "-a" "f6a1dd6ab99b91d603d9cafc64a79e6c36cd2d0ff7363ffce29a1255379758de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6a1dd6ab99b91d603d9cafc64a79e6c36cd2d0ff7363ffce29a1255379758de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6a1dd6ab99b91d603d9cafc64a79e6c36cd2d0ff7363ffce29a1255379758de", kill_on_drop: false }`
[INFO] [stdout] f6a1dd6ab99b91d603d9cafc64a79e6c36cd2d0ff7363ffce29a1255379758de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3f8e3088b661e38c9304859a328c5c032f369ac40406c613d1bdea715e84b02
[INFO] running `Command { std: "docker" "start" "-a" "c3f8e3088b661e38c9304859a328c5c032f369ac40406c613d1bdea715e84b02", kill_on_drop: false }`
[INFO] [stderr]    Compiling optional-fields-serde-macro v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.28s
[INFO] running `Command { std: "docker" "inspect" "c3f8e3088b661e38c9304859a328c5c032f369ac40406c613d1bdea715e84b02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3f8e3088b661e38c9304859a328c5c032f369ac40406c613d1bdea715e84b02", kill_on_drop: false }`
[INFO] [stdout] c3f8e3088b661e38c9304859a328c5c032f369ac40406c613d1bdea715e84b02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63febea38fe34c388531986d1862f733ac4445fd312a160b6807a57b30794756
[INFO] running `Command { std: "docker" "start" "-a" "63febea38fe34c388531986d1862f733ac4445fd312a160b6807a57b30794756", kill_on_drop: false }`
[INFO] [stderr]    Compiling optional-fields-serde-macro v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.81s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/optional_fields_serde_macro-275a0169c93ce888)
[INFO] running `Command { std: "docker" "inspect" "63febea38fe34c388531986d1862f733ac4445fd312a160b6807a57b30794756", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63febea38fe34c388531986d1862f733ac4445fd312a160b6807a57b30794756", kill_on_drop: false }`
[INFO] [stdout] 63febea38fe34c388531986d1862f733ac4445fd312a160b6807a57b30794756
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e40d5a5070fe3d1d1a9c201a48c232b4ea1e99aa35e340d42b98bbe07db8d91d
[INFO] running `Command { std: "docker" "start" "-a" "e40d5a5070fe3d1d1a9c201a48c232b4ea1e99aa35e340d42b98bbe07db8d91d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/optional_fields_serde_macro-275a0169c93ce888)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests optional-fields-serde-macro
[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] [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" "e40d5a5070fe3d1d1a9c201a48c232b4ea1e99aa35e340d42b98bbe07db8d91d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e40d5a5070fe3d1d1a9c201a48c232b4ea1e99aa35e340d42b98bbe07db8d91d", kill_on_drop: false }`
[INFO] [stdout] e40d5a5070fe3d1d1a9c201a48c232b4ea1e99aa35e340d42b98bbe07db8d91d