[INFO] fetching crate wtforms 0.0.1...
[INFO] testing wtforms-0.0.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate wtforms 0.0.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate wtforms 0.0.1
[INFO] finished tweaking crates.io crate wtforms 0.0.1
[INFO] tweaked toml for crates.io crate wtforms 0.0.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wtforms 0.0.1 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "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-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 24 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4eb986f02201d7c96e5a2f255219ea8a56c8c926f2714fb441a906cd36b8527
[INFO] running `Command { std: "docker" "start" "-a" "b4eb986f02201d7c96e5a2f255219ea8a56c8c926f2714fb441a906cd36b8527", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4eb986f02201d7c96e5a2f255219ea8a56c8c926f2714fb441a906cd36b8527", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4eb986f02201d7c96e5a2f255219ea8a56c8c926f2714fb441a906cd36b8527", kill_on_drop: false }`
[INFO] [stdout] b4eb986f02201d7c96e5a2f255219ea8a56c8c926f2714fb441a906cd36b8527
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b69d945083156954e6bff279f3c28c98900808e6b37367ca4b60babd84dde663
[INFO] running `Command { std: "docker" "start" "-a" "b69d945083156954e6bff279f3c28c98900808e6b37367ca4b60babd84dde663", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling wtforms-derive v0.0.0
[INFO] [stderr]    Compiling wtforms v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `wtforms_derive::*`
[INFO] [stdout]   --> src/lib.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub use wtforms_derive::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/fields.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn validate(&self, form: &Form) -> Result<(), Error> {
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn validate(&self, form: &dyn Form) -> Result<(), Error> {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `form`
[INFO] [stdout]   --> src/fields.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn validate(&self, form: &Form) -> Result<(), Error> {
[INFO] [stdout]    |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_form`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `inner` is never read
[INFO] [stdout]  --> src/fields.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Field<T> {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 6 |     inner: T,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.89s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.9
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "b69d945083156954e6bff279f3c28c98900808e6b37367ca4b60babd84dde663", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b69d945083156954e6bff279f3c28c98900808e6b37367ca4b60babd84dde663", kill_on_drop: false }`
[INFO] [stdout] b69d945083156954e6bff279f3c28c98900808e6b37367ca4b60babd84dde663
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed96d972623f7ac6441b743048d77ee3d798daced020e185d6c464b5cc56d626
[INFO] running `Command { std: "docker" "start" "-a" "ed96d972623f7ac6441b743048d77ee3d798daced020e185d6c464b5cc56d626", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `wtforms_derive::*`
[INFO] [stdout]   --> src/lib.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub use wtforms_derive::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/fields.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn validate(&self, form: &Form) -> Result<(), Error> {
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn validate(&self, form: &dyn Form) -> Result<(), Error> {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `form`
[INFO] [stdout]   --> src/fields.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn validate(&self, form: &Form) -> Result<(), Error> {
[INFO] [stdout]    |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_form`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling wtforms v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `inner` is never read
[INFO] [stdout]  --> src/fields.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Field<T> {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 6 |     inner: T,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `wtforms_derive::*`
[INFO] [stdout]   --> src/lib.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub use wtforms_derive::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/fields.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn validate(&self, form: &Form) -> Result<(), Error> {
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn validate(&self, form: &dyn Form) -> Result<(), Error> {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `form`
[INFO] [stdout]   --> src/fields.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn validate(&self, form: &Form) -> Result<(), Error> {
[INFO] [stdout]    |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_form`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `inner` is never read
[INFO] [stdout]  --> src/fields.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Field<T> {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 6 |     inner: T,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find derive macro `Form` in this scope
[INFO] [stdout]  --> tests/test_derive.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 |     #[derive(Form)]
[INFO] [stdout]   |              ^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Form` is imported here, but it is only a trait, without a derive macro
[INFO] [stdout]  --> tests/test_derive.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use wtforms::*;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find derive macro `Form` in this scope
[INFO] [stdout]   --> tests/test_derive.rs:19:14
[INFO] [stdout]    |
[INFO] [stdout] 19 |     #[derive(Form)]
[INFO] [stdout]    |              ^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Form` is imported here, but it is only a trait, without a derive macro
[INFO] [stdout]   --> tests/test_derive.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout]  4 | use wtforms::*;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `field` in this scope
[INFO] [stdout]   --> tests/test_derive.rs:21:11
[INFO] [stdout]    |
[INFO] [stdout] 21 |         #[field(name = "username", autofocus)]
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `field` in this scope
[INFO] [stdout]   --> tests/test_derive.rs:23:11
[INFO] [stdout]    |
[INFO] [stdout] 23 |         #[field(ty = "password")]
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> tests/test_derive.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wtforms` (test "test_derive") due to 4 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ed96d972623f7ac6441b743048d77ee3d798daced020e185d6c464b5cc56d626", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed96d972623f7ac6441b743048d77ee3d798daced020e185d6c464b5cc56d626", kill_on_drop: false }`
[INFO] [stdout] ed96d972623f7ac6441b743048d77ee3d798daced020e185d6c464b5cc56d626
