[INFO] fetching crate serbia 0.4.3... [INFO] testing serbia-0.4.3 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate serbia 0.4.3 into /workspace/builds/worker-0-tc2/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-0-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate serbia 0.4.3 on toolchain beta-2025-09-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 19 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: v2.0.106) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 14d2207397f950bf78ea408baee837cfa9459cafb99d0ba1ae8682cf529df42a [INFO] running `Command { std: "docker" "start" "-a" "14d2207397f950bf78ea408baee837cfa9459cafb99d0ba1ae8682cf529df42a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "14d2207397f950bf78ea408baee837cfa9459cafb99d0ba1ae8682cf529df42a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "14d2207397f950bf78ea408baee837cfa9459cafb99d0ba1ae8682cf529df42a", kill_on_drop: false }` [INFO] [stdout] 14d2207397f950bf78ea408baee837cfa9459cafb99d0ba1ae8682cf529df42a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] dc39ca6fb646a8746b5949e0f0a40f6b46f01d738e388b9a193c934c469b0e23 [INFO] running `Command { std: "docker" "start" "-a" "dc39ca6fb646a8746b5949e0f0a40f6b46f01d738e388b9a193c934c469b0e23", 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 { [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> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.67s [INFO] running `Command { std: "docker" "inspect" "dc39ca6fb646a8746b5949e0f0a40f6b46f01d738e388b9a193c934c469b0e23", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dc39ca6fb646a8746b5949e0f0a40f6b46f01d738e388b9a193c934c469b0e23", kill_on_drop: false }` [INFO] [stdout] dc39ca6fb646a8746b5949e0f0a40f6b46f01d738e388b9a193c934c469b0e23 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1111709610f61cf177808050ed85c5298e704bb2aff29b65a8f125f1bc8a509d [INFO] running `Command { std: "docker" "start" "-a" "1111709610f61cf177808050ed85c5298e704bb2aff29b65a8f125f1bc8a509d", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.101 [INFO] [stderr] Compiling unicode-ident v1.0.19 [INFO] [stderr] Compiling quote v1.0.41 [INFO] [stderr] Compiling hashbrown v0.12.3 [INFO] [stderr] Compiling linked-hash-map v0.5.6 [INFO] [stderr] Compiling indexmap v1.9.3 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling yaml-rust v0.4.5 [INFO] [stderr] Compiling syn v2.0.106 [INFO] [stderr] Compiling serde_derive v1.0.228 [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 { [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> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling serde v1.0.228 [INFO] [stderr] Compiling serde_yaml v0.8.26 [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 { [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> { [INFO] [stdout] | ++++ [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); [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] [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` 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] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 9.28s [INFO] running `Command { std: "docker" "inspect" "1111709610f61cf177808050ed85c5298e704bb2aff29b65a8f125f1bc8a509d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1111709610f61cf177808050ed85c5298e704bb2aff29b65a8f125f1bc8a509d", kill_on_drop: false }` [INFO] [stdout] 1111709610f61cf177808050ed85c5298e704bb2aff29b65a8f125f1bc8a509d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] abc5f0d872b594a607dff4fdda2ee4bab56f02f61a823bf91a9565de7b6b7d36 [INFO] running `Command { std: "docker" "start" "-a" "abc5f0d872b594a607dff4fdda2ee4bab56f02f61a823bf91a9565de7b6b7d36", 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 { [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> { [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: field `0` is never read [INFO] [stderr] --> tests/04_mem_leaks.rs:45:16 [INFO] [stderr] | [INFO] [stderr] 45 | struct Foo(Arc); [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: 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` 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 "04_mem_leaks") generated 1 warning [INFO] [stderr] warning: `serbia` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] warning: `serbia` (test "03_serde_field_attrs") generated 1 warning [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/serbia-f33157f821da359a) [INFO] [stdout] [INFO] [stdout] running 7 tests [INFO] [stdout] test item::tests::detect_deserialize ... ok [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::parse_big_array_len ... ok [INFO] [stdout] test item::tests::no_serde_derive ... 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 0.00s [INFO] [stdout] [INFO] [stderr] Running tests/01_basic_use.rs (/opt/rustwide/target/debug/deps/01_basic_use-ab34deaf1317cbd6) [INFO] [stdout] [INFO] [stdout] running 5 tests [INFO] [stdout] test constant ... ok [INFO] [stdout] test tuple_struct_roundtrip ... ok [INFO] [stdout] test regular_struct_roundtrip ... ok [INFO] [stdout] test enum_roundtrip ... ok [INFO] [stdout] test generics ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s [INFO] [stdout] [INFO] [stderr] Running tests/02_serbia_field_attrs.rs (/opt/rustwide/target/debug/deps/02_serbia_field_attrs-e605602f84f497bc) [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-2162266fdc8951ec) [INFO] [stdout] [INFO] [stdout] running 5 tests [INFO] [stdout] test skip_field ... ok [INFO] [stdout] test skip_serializing_if_true ... ok [INFO] [stdout] test skip_serializing ... ok [INFO] [stdout] test skip_serializing_if_false ... 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-5bc57066798db4ad) [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test deserializing_failure_mem_leak ... ok [INFO] [stderr] Doc-tests serbia [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] [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 181) ... ok [INFO] [stdout] test src/lib.rs - serbia (line 123) ... ok [INFO] [stdout] test src/lib.rs - serbia (line 142) ... ok [INFO] [stdout] test src/lib.rs - serbia (line 216) ... ok [INFO] [stdout] test src/lib.rs - serbia (line 196) ... ok [INFO] [stdout] test src/lib.rs - serbia (line 99) ... ok [INFO] [stdout] test src/lib.rs - serbia (line 160) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.65s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "abc5f0d872b594a607dff4fdda2ee4bab56f02f61a823bf91a9565de7b6b7d36", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "abc5f0d872b594a607dff4fdda2ee4bab56f02f61a823bf91a9565de7b6b7d36", kill_on_drop: false }` [INFO] [stdout] abc5f0d872b594a607dff4fdda2ee4bab56f02f61a823bf91a9565de7b6b7d36