[INFO] fetching crate optional-field 0.1.2...
[INFO] testing optional-field-0.1.2 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate optional-field 0.1.2 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate optional-field 0.1.2 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db6f89adc8a2b2b6d9bcfba7553bf62dd5deeaab179880f8032af2d6daa59e63
[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" "db6f89adc8a2b2b6d9bcfba7553bf62dd5deeaab179880f8032af2d6daa59e63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db6f89adc8a2b2b6d9bcfba7553bf62dd5deeaab179880f8032af2d6daa59e63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db6f89adc8a2b2b6d9bcfba7553bf62dd5deeaab179880f8032af2d6daa59e63", kill_on_drop: false }`
[INFO] [stdout] db6f89adc8a2b2b6d9bcfba7553bf62dd5deeaab179880f8032af2d6daa59e63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fab99dea8b07f22cb0ec149c3fe3dc02f1a50be0ac884fc8d6bee156a311633e
[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" "fab99dea8b07f22cb0ec149c3fe3dc02f1a50be0ac884fc8d6bee156a311633e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling quote v1.0.10
[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 33.82s
[INFO] running `Command { std: "docker" "inspect" "fab99dea8b07f22cb0ec149c3fe3dc02f1a50be0ac884fc8d6bee156a311633e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fab99dea8b07f22cb0ec149c3fe3dc02f1a50be0ac884fc8d6bee156a311633e", kill_on_drop: false }`
[INFO] [stdout] fab99dea8b07f22cb0ec149c3fe3dc02f1a50be0ac884fc8d6bee156a311633e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 729f297066824c2dd87f553d928935c41731e3ed655b0f5ab875a8912f2c37a6
[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" "729f297066824c2dd87f553d928935c41731e3ed655b0f5ab875a8912f2c37a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.71
[INFO] [stderr]    Compiling optional-field v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.94s
[INFO] running `Command { std: "docker" "inspect" "729f297066824c2dd87f553d928935c41731e3ed655b0f5ab875a8912f2c37a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "729f297066824c2dd87f553d928935c41731e3ed655b0f5ab875a8912f2c37a6", kill_on_drop: false }`
[INFO] [stdout] 729f297066824c2dd87f553d928935c41731e3ed655b0f5ab875a8912f2c37a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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] c2ed473b2693101c3aba8ebfc2ab6b59c223c513e13b7bbc8a9e62e6bb355113
[INFO] running `Command { std: "docker" "start" "-a" "c2ed473b2693101c3aba8ebfc2ab6b59c223c513e13b7bbc8a9e62e6bb355113", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/optional_field-d5f822ae0f4a53e5)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/serde.rs (/opt/rustwide/target/debug/deps/serde-32413d036ff5485b)
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    Doc-tests optional-field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test deserialize_null ... ok
[INFO] [stdout] test deserialize_missing ... ok
[INFO] [stdout] test deserialize_value ... ok
[INFO] [stdout] test serialize_missing ... ok
[INFO] [stdout] test serialize_null ... ok
[INFO] [stdout] test serialize_value ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 31 tests
[INFO] [stdout] test src/lib.rs - Field<T>::expect_present (line 456) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::delta (line 669) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::has_value (line 49) ... ok
[INFO] [stdout] test src/lib.rs - Field<&'_mutT>::copied (line 565) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::is_missing (line 21) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::expect (line 429) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::contains (line 63) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::as_mut (line 114) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::as_deref_mut (line 643) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::as_deref (line 622) ... 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<&'_mutT>::cloned (line 601) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::expect (line 423) ... ok
[INFO] [stdout] test src/lib.rs - Field<&'_T>::copied (line 546) ... 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>::unwrap_present (line 321) ... 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_or_else (line 262) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap_or_else (line 383) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::map_present (line 164) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::map (line 140) ... 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>::map_present_or (line 213) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap_or (line 349) ... ok
[INFO] [stdout] test src/lib.rs - Field<T>::unwrap (line 292) ... 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_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 13.91s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c2ed473b2693101c3aba8ebfc2ab6b59c223c513e13b7bbc8a9e62e6bb355113", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2ed473b2693101c3aba8ebfc2ab6b59c223c513e13b7bbc8a9e62e6bb355113", kill_on_drop: false }`
[INFO] [stdout] c2ed473b2693101c3aba8ebfc2ab6b59c223c513e13b7bbc8a9e62e6bb355113