[INFO] fetching crate serde_fast_flatten_derive 0.1.3... [INFO] testing serde_fast_flatten_derive-0.1.3 against beta-2025-10-28 for beta-1.92-2 [INFO] extracting crate serde_fast_flatten_derive 0.1.3 into /workspace/builds/worker-1-tc2/source [INFO] started tweaking crates.io crate serde_fast_flatten_derive 0.1.3 [INFO] removed 0 missing tests [INFO] finished tweaking crates.io crate serde_fast_flatten_derive 0.1.3 [INFO] tweaked toml for crates.io crate serde_fast_flatten_derive 0.1.3 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate serde_fast_flatten_derive 0.1.3 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] crate crates.io crate serde_fast_flatten_derive 0.1.3 already has a lockfile, it will not be regenerated [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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 6da5c7932de9a0beb0fe81ad6594f61e8dd93d4e84765abbeaf001a9da11f39c [INFO] running `Command { std: "docker" "start" "-a" "6da5c7932de9a0beb0fe81ad6594f61e8dd93d4e84765abbeaf001a9da11f39c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6da5c7932de9a0beb0fe81ad6594f61e8dd93d4e84765abbeaf001a9da11f39c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6da5c7932de9a0beb0fe81ad6594f61e8dd93d4e84765abbeaf001a9da11f39c", kill_on_drop: false }` [INFO] [stdout] 6da5c7932de9a0beb0fe81ad6594f61e8dd93d4e84765abbeaf001a9da11f39c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] bb7de8d0d53fb3fd4f6dd582908b8e81c0873a549af843ad4cb419ef68972404 [INFO] running `Command { std: "docker" "start" "-a" "bb7de8d0d53fb3fd4f6dd582908b8e81c0873a549af843ad4cb419ef68972404", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.93 [INFO] [stderr] Compiling unicode-ident v1.0.16 [INFO] [stderr] Compiling quote v1.0.38 [INFO] [stderr] Compiling syn v2.0.98 [INFO] [stderr] Compiling serde_derive_internals v0.29.1 [INFO] [stderr] Compiling serde_fast_flatten_derive v0.1.3 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.81s [INFO] running `Command { std: "docker" "inspect" "bb7de8d0d53fb3fd4f6dd582908b8e81c0873a549af843ad4cb419ef68972404", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bb7de8d0d53fb3fd4f6dd582908b8e81c0873a549af843ad4cb419ef68972404", kill_on_drop: false }` [INFO] [stdout] bb7de8d0d53fb3fd4f6dd582908b8e81c0873a549af843ad4cb419ef68972404 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 6d9e3980ae2445f825ebfd502ad28207d6079f42026e56cc216cb5381134760c [INFO] running `Command { std: "docker" "start" "-a" "6d9e3980ae2445f825ebfd502ad28207d6079f42026e56cc216cb5381134760c", kill_on_drop: false }` [INFO] [stderr] Compiling unicode-ident v1.0.16 [INFO] [stderr] Compiling serde v1.0.217 [INFO] [stderr] Compiling serde_json v1.0.138 [INFO] [stderr] Compiling bytemuck v1.21.0 [INFO] [stderr] Compiling similar v2.7.0 [INFO] [stderr] Compiling half v1.8.3 [INFO] [stderr] Compiling indexmap v2.7.1 [INFO] [stderr] Compiling console v0.15.10 [INFO] [stderr] Compiling proc-macro2 v1.0.93 [INFO] [stderr] Compiling quote v1.0.38 [INFO] [stderr] Compiling syn v2.0.98 [INFO] [stderr] Compiling serde_derive_internals v0.29.1 [INFO] [stderr] Compiling serde_derive v1.0.217 [INFO] [stderr] Compiling pin-project-internal v1.1.9 [INFO] [stderr] Compiling bitcode_derive v0.6.4 [INFO] [stderr] Compiling pin-project v1.1.9 [INFO] [stderr] Compiling insta v1.42.1 [INFO] [stderr] Compiling serde_fast_flatten_derive v0.1.2 [INFO] [stderr] Compiling serde_fast_flatten_derive v0.1.3 (/opt/rustwide/workdir) [INFO] [stderr] Compiling serde_cbor v0.11.2 [INFO] [stderr] Compiling bitcode v0.6.4 [INFO] [stderr] Compiling serde_fast_flatten v0.1.2 [INFO] [stderr] Compiling serde_yaml v0.9.34+deprecated [INFO] [stderr] Compiling bincode v1.3.3 [INFO] [stdout] error[E0412]: cannot find type `U` in this scope [INFO] [stdout] --> tests/generics.rs:8:24 [INFO] [stdout] | [INFO] [stdout] 8 | params: PageParams, [INFO] [stdout] | ^ not found in this scope [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0412]: cannot find type `T` in this scope [INFO] [stdout] --> tests/generics.rs:6:16 [INFO] [stdout] | [INFO] [stdout] 6 | items: Vec, [INFO] [stdout] | ^ not found in this scope [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0412]: cannot find type `T` in this scope [INFO] [stdout] --> tests/generics.rs:13:12 [INFO] [stdout] | [INFO] [stdout] 13 | start: T, [INFO] [stdout] | ^ not found in this scope [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0412]: cannot find type `T` in this scope [INFO] [stdout] --> tests/generics.rs:14:12 [INFO] [stdout] | [INFO] [stdout] 14 | limit: T, [INFO] [stdout] | ^ not found in this scope [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0107]: missing generics for struct `Paged` [INFO] [stdout] --> tests/generics.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | struct Paged { [INFO] [stdout] | ^^^^^ expected 2 generic arguments [INFO] [stdout] | [INFO] [stdout] note: struct defined here, with 2 generic parameters: `T`, `U` [INFO] [stdout] --> tests/generics.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | struct Paged { [INFO] [stdout] | ^^^^^ - - [INFO] [stdout] help: add missing generic arguments [INFO] [stdout] | [INFO] [stdout] 5 | struct Paged { [INFO] [stdout] | ++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0107]: missing generics for struct `PageParams` [INFO] [stdout] --> tests/generics.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | struct PageParams { [INFO] [stdout] | ^^^^^^^^^^ expected 1 generic argument [INFO] [stdout] | [INFO] [stdout] note: struct defined here, with 1 generic parameter: `T` [INFO] [stdout] --> tests/generics.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | struct PageParams { [INFO] [stdout] | ^^^^^^^^^^ - [INFO] [stdout] help: add missing generic argument [INFO] [stdout] | [INFO] [stdout] 12 | struct PageParams { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0107, E0412. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0107`. [INFO] [stdout] [INFO] [stderr] error: could not compile `serde_fast_flatten_derive` (test "generics") due to 6 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "6d9e3980ae2445f825ebfd502ad28207d6079f42026e56cc216cb5381134760c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6d9e3980ae2445f825ebfd502ad28207d6079f42026e56cc216cb5381134760c", kill_on_drop: false }` [INFO] [stdout] 6d9e3980ae2445f825ebfd502ad28207d6079f42026e56cc216cb5381134760c