[INFO] fetching crate serfig 0.1.0...
[INFO] testing serfig-0.1.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate serfig 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate serfig 0.1.0
[INFO] finished tweaking crates.io crate serfig 0.1.0
[INFO] tweaked toml for crates.io crate serfig 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serfig 0.1.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 45 packages to latest compatible versions
[INFO] [stderr]       Adding env_logger v0.10.2 (available: v0.11.8)
[INFO] [stderr]       Adding indexmap v1.9.3 (available: v2.12.0)
[INFO] [stderr]       Adding serde-bridge v0.0.3 (available: v0.1.0)
[INFO] [stderr]       Adding serde-env v0.1.1 (available: v0.2.0)
[INFO] [stderr]       Adding toml v0.7.8 (available: v0.9.8)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef016e1c8f91a56795057c8fd06105d7541431feb3ecb51f057adc422e866065
[INFO] running `Command { std: "docker" "start" "-a" "ef016e1c8f91a56795057c8fd06105d7541431feb3ecb51f057adc422e866065", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef016e1c8f91a56795057c8fd06105d7541431feb3ecb51f057adc422e866065", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef016e1c8f91a56795057c8fd06105d7541431feb3ecb51f057adc422e866065", kill_on_drop: false }`
[INFO] [stdout] ef016e1c8f91a56795057c8fd06105d7541431feb3ecb51f057adc422e866065
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 541530b431241356ac0293faeadc9c28f8c5e9e8ca9832a2e34ba14dabfc18ca
[INFO] running `Command { std: "docker" "start" "-a" "541530b431241356ac0293faeadc9c28f8c5e9e8ca9832a2e34ba14dabfc18ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling winnow v0.5.40
[INFO] [stderr]    Compiling serde_spanned v0.6.9
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr]    Compiling serde-env v0.1.1
[INFO] [stderr]    Compiling serde-bridge v0.0.3
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling toml v0.7.8
[INFO] [stderr]    Compiling serfig v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.93s
[INFO] running `Command { std: "docker" "inspect" "541530b431241356ac0293faeadc9c28f8c5e9e8ca9832a2e34ba14dabfc18ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "541530b431241356ac0293faeadc9c28f8c5e9e8ca9832a2e34ba14dabfc18ca", kill_on_drop: false }`
[INFO] [stdout] 541530b431241356ac0293faeadc9c28f8c5e9e8ca9832a2e34ba14dabfc18ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ffa5324aa82c1395471392eec9ea27a565f018173137addaca1640edfa7d4be4
[INFO] running `Command { std: "docker" "start" "-a" "ffa5324aa82c1395471392eec9ea27a565f018173137addaca1640edfa7d4be4", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling is-terminal v0.4.17
[INFO] [stderr]    Compiling temp-env v0.3.6
[INFO] [stderr]    Compiling serde_spanned v0.6.9
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr]    Compiling serde-env v0.1.1
[INFO] [stderr]    Compiling serde-bridge v0.0.3
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling toml v0.7.8
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling serfig v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling env_logger v0.10.2
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.80s
[INFO] running `Command { std: "docker" "inspect" "ffa5324aa82c1395471392eec9ea27a565f018173137addaca1640edfa7d4be4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffa5324aa82c1395471392eec9ea27a565f018173137addaca1640edfa7d4be4", kill_on_drop: false }`
[INFO] [stdout] ffa5324aa82c1395471392eec9ea27a565f018173137addaca1640edfa7d4be4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c03275e1209f591983db2b4064c7e9f6f742806d639eb86f9cedea0d53957943
[INFO] running `Command { std: "docker" "start" "-a" "c03275e1209f591983db2b4064c7e9f6f742806d639eb86f9cedea0d53957943", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/serfig-0472183816cc6778)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test builder::tests::test_build ... ok
[INFO] [stdout] test builder::tests::test_config_bool_enabled ... ok
[INFO] [stdout] test collectors::value::tests::test_from_self ... ok
[INFO] [stdout] test collectors::structural::tests::test_from_str ... ok
[INFO] [stdout] test value::tests::test_merge ... ok
[INFO] [stdout] test builder::tests::test_layered_build ... ok
[INFO] [stdout] test builder::tests::test_layered_build_default ... ok
[INFO] [stdout] test builder::tests::test_layered_build_vec ... ok
[INFO] [stdout] test builder::tests::test_layered_overwrite ... ok
[INFO] [stdout] test collectors::env::tests::test_env ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serfig
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test src/collectors/collector.rs - collectors::collector::Collector (line 13) ... ignored
[INFO] [stdout] test src/collectors/mod.rs - collectors (line 5) ... ignored
[INFO] [stdout] test src/collectors/structural.rs - collectors::structural::from_reader (line 18) - compile ... ok
[INFO] [stdout] test src/collectors/structural.rs - collectors::structural::from_file (line 61) - compile ... ok
[INFO] [stdout] test src/collectors/value.rs - collectors::value::from_self (line 15) - compile ... ok
[INFO] [stdout] test src/builder.rs - builder::Builder<V>::build (line 130) - compile ... FAILED
[INFO] [stdout] test src/builder.rs - builder::Builder<V>::collect (line 33) ... ok
[INFO] [stdout] test src/collectors/env.rs - collectors::env::from_env (line 17) ... ok
[INFO] [stdout] test src/builder.rs - builder::Builder<V>::build_with (line 72) ... ok
[INFO] [stdout] test src/collectors/structural.rs - collectors::structural::from_str (line 102) ... ok
[INFO] [stdout] test src/collectors/mod.rs - collectors (line 23) ... ok
[INFO] [stdout] test src/lib.rs - (line 7) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/builder.rs - builder::Builder<V>::build (line 130) stdout ----
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/builder.rs:145:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn main() -> anyhow::Result<()> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: Serialize` will fail
[INFO] [stdout]   --> src/builder.rs:146:19
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let builder = Builder::default()
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout]    = note: `#[deny(dependency_on_unit_never_type_fallback)]` (part of `#[deny(rust_2024_compatibility)]`) on by default
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 19 |         .collect(from_env::<()>())
[INFO] [stdout]    |                          ++++++
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/builder.rs - builder::Builder<V>::build (line 130)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 9 passed; 1 failed; 2 ignored; 0 measured; 0 filtered out; finished in 0.71s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "c03275e1209f591983db2b4064c7e9f6f742806d639eb86f9cedea0d53957943", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c03275e1209f591983db2b4064c7e9f6f742806d639eb86f9cedea0d53957943", kill_on_drop: false }`
[INFO] [stdout] c03275e1209f591983db2b4064c7e9f6f742806d639eb86f9cedea0d53957943
