[INFO] fetching crate optional-field 0.1.2...
[INFO] testing optional-field-0.1.2 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] extracting crate optional-field 0.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate optional-field 0.1.2 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52a1f140225a5edcc352461adab1d5d84c09112fdf68cb41794099108e0c64ba
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "52a1f140225a5edcc352461adab1d5d84c09112fdf68cb41794099108e0c64ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52a1f140225a5edcc352461adab1d5d84c09112fdf68cb41794099108e0c64ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52a1f140225a5edcc352461adab1d5d84c09112fdf68cb41794099108e0c64ba", kill_on_drop: false }`
[INFO] [stdout] 52a1f140225a5edcc352461adab1d5d84c09112fdf68cb41794099108e0c64ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd8ba89dea55ad5d23361a58ca518be1405de9fe7635f096863354343515b792
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fd8ba89dea55ad5d23361a58ca518be1405de9fe7635f096863354343515b792", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling optional-fields-serde-macro v0.1.0
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling optional-field v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.01s
[INFO] running `Command { std: "docker" "inspect" "fd8ba89dea55ad5d23361a58ca518be1405de9fe7635f096863354343515b792", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd8ba89dea55ad5d23361a58ca518be1405de9fe7635f096863354343515b792", kill_on_drop: false }`
[INFO] [stdout] fd8ba89dea55ad5d23361a58ca518be1405de9fe7635f096863354343515b792
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 941007de8615658a5495e78ecd6204a05724efce925d99a53d775630f5ad007d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "941007de8615658a5495e78ecd6204a05724efce925d99a53d775630f5ad007d", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.72
[INFO] [stderr]    Compiling optional-field v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.67s
[INFO] running `Command { std: "docker" "inspect" "941007de8615658a5495e78ecd6204a05724efce925d99a53d775630f5ad007d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "941007de8615658a5495e78ecd6204a05724efce925d99a53d775630f5ad007d", kill_on_drop: false }`
[INFO] [stdout] 941007de8615658a5495e78ecd6204a05724efce925d99a53d775630f5ad007d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b23962656cc0fbaa534b6f5a38dbaa436ea4d8532c2ab1f54e4bfb174393fbbf
[INFO] running `Command { std: "docker" "start" "-a" "b23962656cc0fbaa534b6f5a38dbaa436ea4d8532c2ab1f54e4bfb174393fbbf", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/optional_field-8d016eed2ff6d1e0)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/serde.rs (/opt/rustwide/target/debug/deps/serde-8bae2481e9925888)
[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_null ... ok
[INFO] [stdout] test deserialize_missing ... ok
[INFO] [stdout] test serialize_missing ... ok
[INFO] [stdout] test serialize_value ... ok
[INFO] [stdout] test deserialize_value ... ok
[INFO] [stderr]    Doc-tests optional-field
[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 0.01s
[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>::delta (line 669) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::expect_present (line 456) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::expect (line 423) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::expect_present (line 450) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::as_ref (line 93) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::contains (line 63) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::as_deref_mut (line 643) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::expect (line 429) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::is_missing (line 21) ... 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>::cloned (line 583) ... ok
[INFO] [stdout] test src/lib.rs - Field<&'_mutT>::copied (line 565) ... ok
[INFO] [stdout] test src/lib.rs - Field<&'_T>::copied (line 546) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::as_deref (line 622) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::is_present (line 35) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap (line 298) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::map_or (line 191) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap_present (line 321) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::map (line 140) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::map_present_or (line 213) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap (line 292) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::map_or_else (line 238) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::map_present (line 164) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::map_present_or_else (line 262) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap_or (line 349) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap_present_or (line 366) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap_present (line 327) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap_or_else (line 383) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap_present_or_else (line 401) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 31 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 9.31s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b23962656cc0fbaa534b6f5a38dbaa436ea4d8532c2ab1f54e4bfb174393fbbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b23962656cc0fbaa534b6f5a38dbaa436ea4d8532c2ab1f54e4bfb174393fbbf", kill_on_drop: false }`
[INFO] [stdout] b23962656cc0fbaa534b6f5a38dbaa436ea4d8532c2ab1f54e4bfb174393fbbf