[INFO] fetching crate serbia 0.4.3...
[INFO] testing serbia-0.4.3 against 1.95.0 for beta-1.96-2
[INFO] extracting crate serbia 0.4.3 into /workspace/builds/worker-2-tc1/source
[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-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate serbia 0.4.3 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages to latest compatible versions
[INFO] [stderr]       Adding serde_yaml v0.8.26 (available: v0.9.34+deprecated)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.117)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 700973bd7d3e377c54d26001d62087262aecab05f09d81922ebf986b6a4aac11
[INFO] running `Command { std: "docker" "start" "-a" "700973bd7d3e377c54d26001d62087262aecab05f09d81922ebf986b6a4aac11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "700973bd7d3e377c54d26001d62087262aecab05f09d81922ebf986b6a4aac11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "700973bd7d3e377c54d26001d62087262aecab05f09d81922ebf986b6a4aac11", kill_on_drop: false }`
[INFO] [stdout] 700973bd7d3e377c54d26001d62087262aecab05f09d81922ebf986b6a4aac11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c67aea10aff0b4bf46643044646f4f3206d700f90b238bff5baa7d8f8d336a0e
[INFO] running `Command { std: "docker" "start" "-a" "c67aea10aff0b4bf46643044646f4f3206d700f90b238bff5baa7d8f8d336a0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serbia v0.4.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/item.rs:71:29
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn big_array_fields(&mut self) -> impl Iterator<Item = BigArrayField> {
[INFO] [stdout]    |                             ^^^^^^^^^                          ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn big_array_fields(&mut self) -> impl Iterator<Item = BigArrayField<'_>> {
[INFO] [stdout]    |                                                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.88s
[INFO] running `Command { std: "docker" "inspect" "c67aea10aff0b4bf46643044646f4f3206d700f90b238bff5baa7d8f8d336a0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c67aea10aff0b4bf46643044646f4f3206d700f90b238bff5baa7d8f8d336a0e", kill_on_drop: false }`
[INFO] [stdout] c67aea10aff0b4bf46643044646f4f3206d700f90b238bff5baa7d8f8d336a0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 25699547a5d322c39f288863a5d9c2e25d097cb4564da146c38158191362d04d
[INFO] running `Command { std: "docker" "start" "-a" "25699547a5d322c39f288863a5d9c2e25d097cb4564da146c38158191362d04d", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling linked-hash-map v0.5.6
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling serde_yaml v0.8.26
[INFO] [stderr]    Compiling serbia v0.4.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/item.rs:71:29
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn big_array_fields(&mut self) -> impl Iterator<Item = BigArrayField> {
[INFO] [stdout]    |                             ^^^^^^^^^                          ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn big_array_fields(&mut self) -> impl Iterator<Item = BigArrayField<'_>> {
[INFO] [stdout]    |                                                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/item.rs:71:29
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn big_array_fields(&mut self) -> impl Iterator<Item = BigArrayField> {
[INFO] [stdout]    |                             ^^^^^^^^^                          ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn big_array_fields(&mut self) -> impl Iterator<Item = BigArrayField<'_>> {
[INFO] [stdout]    |                                                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `[u8; 42]` does not permit being left uninitialized
[INFO] [stdout]   --> tests/03_serde_field_attrs.rs:49:48
[INFO] [stdout]    |
[INFO] [stdout] 49 |                     let mut arr: Self::Value = std::mem::MaybeUninit::uninit().assume_init();
[INFO] [stdout]    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                |
[INFO] [stdout]    |                                                this code causes undefined behavior when executed
[INFO] [stdout]    |                                                help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> tests/04_mem_leaks.rs:45:16
[INFO] [stdout]    |
[INFO] [stdout] 45 |     struct Foo(Arc<String>);
[INFO] [stdout]    |            --- ^^^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 10.60s
[INFO] running `Command { std: "docker" "inspect" "25699547a5d322c39f288863a5d9c2e25d097cb4564da146c38158191362d04d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25699547a5d322c39f288863a5d9c2e25d097cb4564da146c38158191362d04d", kill_on_drop: false }`
[INFO] [stdout] 25699547a5d322c39f288863a5d9c2e25d097cb4564da146c38158191362d04d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9a1466fe429237e1177fc6d0d7bbf5e101863d6bc2b3bc5555210b3cd74d2ce1
[INFO] running `Command { std: "docker" "start" "-a" "9a1466fe429237e1177fc6d0d7bbf5e101863d6bc2b3bc5555210b3cd74d2ce1", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/item.rs:71:29
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn big_array_fields(&mut self) -> impl Iterator<Item = BigArrayField> {
[INFO] [stderr]    |                             ^^^^^^^^^                          ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                             |
[INFO] [stderr]    |                             the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn big_array_fields(&mut self) -> impl Iterator<Item = BigArrayField<'_>> {
[INFO] [stderr]    |                                                                             ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `serbia` (lib) generated 1 warning (run `cargo fix --lib -p serbia` to apply 1 suggestion)
[INFO] [stderr] warning: the type `[u8; 42]` does not permit being left uninitialized
[INFO] [stderr]   --> tests/03_serde_field_attrs.rs:49:48
[INFO] [stderr]    |
[INFO] [stderr] 49 |                     let mut arr: Self::Value = std::mem::MaybeUninit::uninit().assume_init();
[INFO] [stderr]    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                                                |
[INFO] [stderr]    |                                                this code causes undefined behavior when executed
[INFO] [stderr]    |                                                help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]    |
[INFO] [stderr]    = note: integers must be initialized
[INFO] [stderr]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `serbia` (test "03_serde_field_attrs") generated 1 warning
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> tests/04_mem_leaks.rs:45:16
[INFO] [stderr]    |
[INFO] [stderr] 45 |     struct Foo(Arc<String>);
[INFO] [stderr]    |            --- ^^^^^^^^^^^
[INFO] [stderr]    |            |
[INFO] [stderr]    |            field in this struct
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing this field
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `serbia` (test "04_mem_leaks") generated 1 warning
[INFO] [stderr] warning: `serbia` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/serbia-1513b4ef8438cd2f)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test item::tests::detect_serialize_deserialize ... ok
[INFO] [stdout] test item::tests::manual_bufsize ... ok
[INFO] [stdout] test item::tests::detect_serialize ... ok
[INFO] [stdout] test item::tests::detect_deserialize ... ok
[INFO] [stdout] test item::tests::no_serde_derive ... ok
[INFO] [stdout] test item::tests::parse_big_array_len ... ok
[INFO] [stdout] test item::tests::detect_serialize_deserialize_qualified ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/01_basic_use.rs (/opt/rustwide/target/debug/deps/01_basic_use-cd7752ff7b958f04)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test regular_struct_roundtrip ... ok
[INFO] [stdout] test constant ... ok
[INFO] [stdout] test generics ... 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] [stderr]      Running tests/02_serbia_field_attrs.rs (/opt/rustwide/target/debug/deps/02_serbia_field_attrs-56665d85e2ba1743)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test skip_field ... ok
[INFO] [stdout] test type_alias ... ok
[INFO] [stderr]      Running tests/03_serde_field_attrs.rs (/opt/rustwide/target/debug/deps/03_serde_field_attrs-58dee52e6974bcfd)
[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] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test skip_field ... ok
[INFO] [stdout] test skip_serializing ... ok
[INFO] [stdout] test skip_serializing_if_false ... ok
[INFO] [stdout] test skip_serializing_if_true ... ok
[INFO] [stdout] test serialize_deserialize_with ... 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-b8c01c24fb5824ed)
[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 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serbia
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/lib.rs - serbia (line 160) ... ok
[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 196) ... 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 99) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.87s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9a1466fe429237e1177fc6d0d7bbf5e101863d6bc2b3bc5555210b3cd74d2ce1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a1466fe429237e1177fc6d0d7bbf5e101863d6bc2b3bc5555210b3cd74d2ce1", kill_on_drop: false }`
[INFO] [stdout] 9a1466fe429237e1177fc6d0d7bbf5e101863d6bc2b3bc5555210b3cd74d2ce1
