[INFO] fetching crate optional-field 0.1.2...
[INFO] testing optional-field-0.1.2 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate optional-field 0.1.2 into /workspace/builds/worker-18/source
[INFO] validating manifest of crates.io crate optional-field 0.1.2 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate optional-field 0.1.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate optional-field 0.1.2
[INFO] tweaked toml for crates.io crate optional-field 0.1.2 written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded optional-fields-serde-macro v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 680855a309dc8dfc875013ec389c54f0443f5ed171f56565a659c4977025b00a
[INFO] running `Command { std: "docker" "start" "-a" "680855a309dc8dfc875013ec389c54f0443f5ed171f56565a659c4977025b00a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "680855a309dc8dfc875013ec389c54f0443f5ed171f56565a659c4977025b00a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "680855a309dc8dfc875013ec389c54f0443f5ed171f56565a659c4977025b00a", kill_on_drop: false }`
[INFO] [stdout] 680855a309dc8dfc875013ec389c54f0443f5ed171f56565a659c4977025b00a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53050a11335db35ff91af29d661272774070727b18f0b13655f3352464e00a2f
[INFO] running `Command { std: "docker" "start" "-a" "53050a11335db35ff91af29d661272774070727b18f0b13655f3352464e00a2f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling optional-fields-serde-macro v0.1.0
[INFO] [stderr]    Compiling optional-field v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.93s
[INFO] running `Command { std: "docker" "inspect" "53050a11335db35ff91af29d661272774070727b18f0b13655f3352464e00a2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53050a11335db35ff91af29d661272774070727b18f0b13655f3352464e00a2f", kill_on_drop: false }`
[INFO] [stdout] 53050a11335db35ff91af29d661272774070727b18f0b13655f3352464e00a2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c90e808dd02b52a9368eb0a49cadd32adab64505f93dea11649009d3430e10d7
[INFO] running `Command { std: "docker" "start" "-a" "c90e808dd02b52a9368eb0a49cadd32adab64505f93dea11649009d3430e10d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling optional-field v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.16s
[INFO] running `Command { std: "docker" "inspect" "c90e808dd02b52a9368eb0a49cadd32adab64505f93dea11649009d3430e10d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c90e808dd02b52a9368eb0a49cadd32adab64505f93dea11649009d3430e10d7", kill_on_drop: false }`
[INFO] [stdout] c90e808dd02b52a9368eb0a49cadd32adab64505f93dea11649009d3430e10d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 69563d20014214a2769f8ca7504f7b2f813fcd712a3a3e3a8e802283c548fc6b
[INFO] running `Command { std: "docker" "start" "-a" "69563d20014214a2769f8ca7504f7b2f813fcd712a3a3e3a8e802283c548fc6b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/optional_field-0f1f2ed1e7857e66)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running tests/serde.rs (/opt/rustwide/target/debug/deps/serde-2c847a45dd12906b)
[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 6 tests
[INFO] [stdout] test deserialize_missing ... ok
[INFO] [stdout] test deserialize_value ... ok
[INFO] [stderr]    Doc-tests optional-field
[INFO] [stdout] test serialize_missing ... ok
[INFO] [stdout] test deserialize_null ... ok
[INFO] [stdout] test serialize_value ... ok
[INFO] [stdout] test serialize_null ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 31 tests
[INFO] [stdout] test src/lib.rs - Field<T>::has_value (line 49) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::expect_present (line 456) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::map_or_else (line 238) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::map (line 140) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::as_deref (line 622) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::map_or (line 191) ... ok
[INFO] [stdout] test src/lib.rs - Field<&'_T>::cloned (line 583) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::is_present (line 35) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::contains (line 63) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::expect_present (line 450) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::expect (line 423) ... ok
[INFO] [stdout] test src/lib.rs - Field<&'_mutT>::copied (line 565) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap_or (line 349) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap (line 298) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::map_present_or (line 213) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap_present (line 327) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::map_present_or_else (line 262) ... ok
[INFO] [stdout] test src/lib.rs - Field<&'_mutT>::cloned (line 601) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::as_mut (line 114) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap (line 292) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap_present (line 321) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap_present_or_else (line 401) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::is_missing (line 21) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::as_ref (line 93) ... ok
[INFO] [stdout] test src/lib.rs - Field<&'_T>::copied (line 546) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::expect (line 429) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap_present_or (line 366) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::map_present (line 164) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::as_deref_mut (line 643) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::delta (line 669) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap_or_else (line 383) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 31 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.63s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "69563d20014214a2769f8ca7504f7b2f813fcd712a3a3e3a8e802283c548fc6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69563d20014214a2769f8ca7504f7b2f813fcd712a3a3e3a8e802283c548fc6b", kill_on_drop: false }`
[INFO] [stdout] 69563d20014214a2769f8ca7504f7b2f813fcd712a3a3e3a8e802283c548fc6b