[INFO] fetching crate serbia 0.4.3...
[INFO] testing serbia-0.4.3 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate serbia 0.4.3 into /workspace/builds/worker-41/source
[INFO] validating manifest of crates.io crate serbia 0.4.3 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 serbia 0.4.3
[INFO] finished tweaking crates.io crate serbia 0.4.3
[INFO] tweaked toml for crates.io crate serbia 0.4.3 written to /workspace/builds/worker-41/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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] 7739b943759948d488aed0002cb9dcf377856ccb5603718945d10cf77b4112c7
[INFO] running `Command { std: "docker" "start" "-a" "7739b943759948d488aed0002cb9dcf377856ccb5603718945d10cf77b4112c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7739b943759948d488aed0002cb9dcf377856ccb5603718945d10cf77b4112c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7739b943759948d488aed0002cb9dcf377856ccb5603718945d10cf77b4112c7", kill_on_drop: false }`
[INFO] [stdout] 7739b943759948d488aed0002cb9dcf377856ccb5603718945d10cf77b4112c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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] fc1a2ed635a62b719ee5de7145782aae0097b6ece9ee38f7bb7129d174ea9183
[INFO] running `Command { std: "docker" "start" "-a" "fc1a2ed635a62b719ee5de7145782aae0097b6ece9ee38f7bb7129d174ea9183", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling serbia v0.4.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.10s
[INFO] running `Command { std: "docker" "inspect" "fc1a2ed635a62b719ee5de7145782aae0097b6ece9ee38f7bb7129d174ea9183", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc1a2ed635a62b719ee5de7145782aae0097b6ece9ee38f7bb7129d174ea9183", kill_on_drop: false }`
[INFO] [stdout] fc1a2ed635a62b719ee5de7145782aae0097b6ece9ee38f7bb7129d174ea9183
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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] bfe29e852987c4e0e898565c01ca41de9d5085de08e4428ee7f71ae55d3dcdde
[INFO] running `Command { std: "docker" "start" "-a" "bfe29e852987c4e0e898565c01ca41de9d5085de08e4428ee7f71ae55d3dcdde", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling serde_yaml v0.8.23
[INFO] [stderr]    Compiling serbia v0.4.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 12.37s
[INFO] running `Command { std: "docker" "inspect" "bfe29e852987c4e0e898565c01ca41de9d5085de08e4428ee7f71ae55d3dcdde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfe29e852987c4e0e898565c01ca41de9d5085de08e4428ee7f71ae55d3dcdde", kill_on_drop: false }`
[INFO] [stdout] bfe29e852987c4e0e898565c01ca41de9d5085de08e4428ee7f71ae55d3dcdde
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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] 0ada2c04b7c913b95134d29ade5cf6c88953aaf09d3c454bbb60babeb94dc70e
[INFO] running `Command { std: "docker" "start" "-a" "0ada2c04b7c913b95134d29ade5cf6c88953aaf09d3c454bbb60babeb94dc70e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/serbia-d70e57c4cb5c01be)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test item::tests::no_serde_derive ... ok
[INFO] [stdout] test item::tests::detect_serialize ... ok
[INFO] [stdout] test item::tests::detect_serialize_deserialize ... ok
[INFO] [stdout] test item::tests::detect_deserialize ... ok
[INFO] [stdout] test item::tests::detect_serialize_deserialize_qualified ... ok
[INFO] [stdout] test item::tests::manual_bufsize ... ok
[INFO] [stdout] test item::tests::parse_big_array_len ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/01_basic_use.rs (/opt/rustwide/target/debug/deps/01_basic_use-71d27a0bc1199c48)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stderr]      Running tests/02_serbia_field_attrs.rs (/opt/rustwide/target/debug/deps/02_serbia_field_attrs-18c45ebcafda2ce9)
[INFO] [stdout] test generics ... ok
[INFO] [stdout] test constant ... ok
[INFO] [stdout] test regular_struct_roundtrip ... ok
[INFO] [stdout] test enum_roundtrip ... ok
[INFO] [stdout] test tuple_struct_roundtrip ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test skip_field ... ok
[INFO] [stdout] test type_alias ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/03_serde_field_attrs.rs (/opt/rustwide/target/debug/deps/03_serde_field_attrs-88f2700da296a2a1)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test skip_field ... ok
[INFO] [stdout] test skip_serializing ... ok
[INFO] [stdout] test skip_serializing_if_true ... ok
[INFO] [stdout] test serialize_deserialize_with ... ok
[INFO] [stdout] test skip_serializing_if_false ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/04_mem_leaks.rs (/opt/rustwide/target/debug/deps/04_mem_leaks-ee813267c08881eb)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test deserializing_failure_mem_leak ... ok
[INFO] [stdout] test mem_safety_regression_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serbia
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/lib.rs - serbia (line 281) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - serbia (line 123) ... ok
[INFO] [stdout] test src/lib.rs - serbia (line 181) ... ok
[INFO] [stdout] test src/lib.rs - serbia (line 216) ... ok
[INFO] [stdout] test src/lib.rs - serbia (line 142) ... ok
[INFO] [stdout] test src/lib.rs - serbia (line 160) ... ok
[INFO] [stdout] test src/lib.rs - serbia (line 196) ... ok
[INFO] [stdout] test src/lib.rs - serbia (line 99) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.28s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0ada2c04b7c913b95134d29ade5cf6c88953aaf09d3c454bbb60babeb94dc70e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ada2c04b7c913b95134d29ade5cf6c88953aaf09d3c454bbb60babeb94dc70e", kill_on_drop: false }`
[INFO] [stdout] 0ada2c04b7c913b95134d29ade5cf6c88953aaf09d3c454bbb60babeb94dc70e