[INFO] cloning repository https://github.com/ryardley/halo_example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ryardley/halo_example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryardley%2Fhalo_example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryardley%2Fhalo_example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a6dd420b0c0f16aaa901bd43661243fd2433cd8f
[INFO] testing ryardley/halo_example against beta-2026-01-20 for beta-1.94-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryardley%2Fhalo_example" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ryardley/halo_example
[INFO] finished tweaking git repo https://github.com/ryardley/halo_example
[INFO] tweaked toml for git repo https://github.com/ryardley/halo_example written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ryardley/halo_example on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ryardley/halo_example 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-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2729d448afcfb504151cfcb38e86b88fbe4d4bef1087ac18b08e5ccf3eb78019
[INFO] running `Command { std: "docker" "start" "-a" "2729d448afcfb504151cfcb38e86b88fbe4d4bef1087ac18b08e5ccf3eb78019", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2729d448afcfb504151cfcb38e86b88fbe4d4bef1087ac18b08e5ccf3eb78019", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2729d448afcfb504151cfcb38e86b88fbe4d4bef1087ac18b08e5ccf3eb78019", kill_on_drop: false }`
[INFO] [stdout] 2729d448afcfb504151cfcb38e86b88fbe4d4bef1087ac18b08e5ccf3eb78019
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 503a780866dd3c3193a1cc40aabcfc8e8b908f6835ceb783e94f75ceb753b013
[INFO] running `Command { std: "docker" "start" "-a" "503a780866dd3c3193a1cc40aabcfc8e8b908f6835ceb783e94f75ceb753b013", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.15
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling funty v2.0.0
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling wyz v0.5.1
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling crunchy v0.2.3
[INFO] [stderr]    Compiling blake2b_simd v1.0.2
[INFO] [stderr]    Compiling once_cell v1.20.2
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling uint v0.9.5
[INFO] [stderr]    Compiling halo2 v0.0.0
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling bitvec v1.0.1
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]    Compiling maybe-rayon v0.1.1
[INFO] [stderr]    Compiling ff v0.13.0
[INFO] [stderr]    Compiling group v0.13.0
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling pasta_curves v0.5.1
[INFO] [stderr]    Compiling sinsemilla v0.1.0
[INFO] [stderr]    Compiling halo2_proofs v0.3.0
[INFO] [stderr]    Compiling halo2_poseidon v0.1.0
[INFO] [stderr]    Compiling halo2_gadgets v0.3.1
[INFO] [stderr]    Compiling halo_example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `NumericInstructions` is never used
[INFO] [stdout]   --> src/example1.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 22 | trait NumericInstructions<F: Field>: Chip<F> {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FieldChip` is never constructed
[INFO] [stdout]   --> src/example1.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | struct FieldChip<F: Field> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FieldConfig` is never constructed
[INFO] [stdout]   --> src/example1.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | struct FieldConfig {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `construct` and `configure` are never used
[INFO] [stdout]   --> src/example1.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | impl<F: Field> FieldChip<F> {
[INFO] [stdout]    | --------------------------- associated functions in this implementation
[INFO] [stdout] 80 |     fn construct(config: <Self as Chip<F>>::Config) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 87 |     fn configure(
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Number` is never constructed
[INFO] [stdout]    --> src/example1.rs:157:8
[INFO] [stdout]     |
[INFO] [stdout] 157 | struct Number<F: Field>(AssignedCell<F, F>);
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyCircuit` is never constructed
[INFO] [stdout]    --> src/example1.rs:252:8
[INFO] [stdout]     |
[INFO] [stdout] 252 | struct MyCircuit<F: Field> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_example1` is never used
[INFO] [stdout]    --> src/example1.rs:316:8
[INFO] [stdout]     |
[INFO] [stdout] 316 | pub fn test_example1() -> Result<(), Error> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyCircuit` is never constructed
[INFO] [stdout]  --> src/example2.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct MyCircuit {}
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 41.92s
[INFO] running `Command { std: "docker" "inspect" "503a780866dd3c3193a1cc40aabcfc8e8b908f6835ceb783e94f75ceb753b013", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "503a780866dd3c3193a1cc40aabcfc8e8b908f6835ceb783e94f75ceb753b013", kill_on_drop: false }`
[INFO] [stdout] 503a780866dd3c3193a1cc40aabcfc8e8b908f6835ceb783e94f75ceb753b013
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 688069ca37b38f3b95b377e30120d625198a848fe7d7cf7a0d2b837c3e1264c8
[INFO] running `Command { std: "docker" "start" "-a" "688069ca37b38f3b95b377e30120d625198a848fe7d7cf7a0d2b837c3e1264c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling halo_example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `NumericInstructions` is never used
[INFO] [stdout]   --> src/example1.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 22 | trait NumericInstructions<F: Field>: Chip<F> {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FieldChip` is never constructed
[INFO] [stdout]   --> src/example1.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | struct FieldChip<F: Field> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FieldConfig` is never constructed
[INFO] [stdout]   --> src/example1.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | struct FieldConfig {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `construct` and `configure` are never used
[INFO] [stdout]   --> src/example1.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | impl<F: Field> FieldChip<F> {
[INFO] [stdout]    | --------------------------- associated functions in this implementation
[INFO] [stdout] 80 |     fn construct(config: <Self as Chip<F>>::Config) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 87 |     fn configure(
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Number` is never constructed
[INFO] [stdout]    --> src/example1.rs:157:8
[INFO] [stdout]     |
[INFO] [stdout] 157 | struct Number<F: Field>(AssignedCell<F, F>);
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyCircuit` is never constructed
[INFO] [stdout]    --> src/example1.rs:252:8
[INFO] [stdout]     |
[INFO] [stdout] 252 | struct MyCircuit<F: Field> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_example1` is never used
[INFO] [stdout]    --> src/example1.rs:316:8
[INFO] [stdout]     |
[INFO] [stdout] 316 | pub fn test_example1() -> Result<(), Error> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 7.14s
[INFO] running `Command { std: "docker" "inspect" "688069ca37b38f3b95b377e30120d625198a848fe7d7cf7a0d2b837c3e1264c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "688069ca37b38f3b95b377e30120d625198a848fe7d7cf7a0d2b837c3e1264c8", kill_on_drop: false }`
[INFO] [stdout] 688069ca37b38f3b95b377e30120d625198a848fe7d7cf7a0d2b837c3e1264c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6784fd4dfaa0d2366aa135514357f2f1d8b30666051445a2dccb03ff6b48ef0b
[INFO] running `Command { std: "docker" "start" "-a" "6784fd4dfaa0d2366aa135514357f2f1d8b30666051445a2dccb03ff6b48ef0b", kill_on_drop: false }`
[INFO] [stderr] warning: trait `NumericInstructions` is never used
[INFO] [stderr]   --> src/example1.rs:22:7
[INFO] [stderr]    |
[INFO] [stderr] 22 | trait NumericInstructions<F: Field>: Chip<F> {
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `FieldChip` is never constructed
[INFO] [stderr]   --> src/example1.rs:53:8
[INFO] [stderr]    |
[INFO] [stderr] 53 | struct FieldChip<F: Field> {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `FieldConfig` is never constructed
[INFO] [stderr]   --> src/example1.rs:63:8
[INFO] [stderr]    |
[INFO] [stderr] 63 | struct FieldConfig {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated functions `construct` and `configure` are never used
[INFO] [stderr]   --> src/example1.rs:80:8
[INFO] [stderr]    |
[INFO] [stderr] 79 | impl<F: Field> FieldChip<F> {
[INFO] [stderr]    | --------------------------- associated functions in this implementation
[INFO] [stderr] 80 |     fn construct(config: <Self as Chip<F>>::Config) -> Self {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 87 |     fn configure(
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Number` is never constructed
[INFO] [stderr]    --> src/example1.rs:157:8
[INFO] [stderr]     |
[INFO] [stderr] 157 | struct Number<F: Field>(AssignedCell<F, F>);
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `MyCircuit` is never constructed
[INFO] [stderr]    --> src/example1.rs:252:8
[INFO] [stderr]     |
[INFO] [stderr] 252 | struct MyCircuit<F: Field> {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_example1` is never used
[INFO] [stderr]    --> src/example1.rs:316:8
[INFO] [stderr]     |
[INFO] [stderr] 316 | pub fn test_example1() -> Result<(), Error> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `halo_example` (bin "halo_example" test) generated 7 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/halo_example-c13b28e0290d2741)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_sha256 has been running for over 60 seconds
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "6784fd4dfaa0d2366aa135514357f2f1d8b30666051445a2dccb03ff6b48ef0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6784fd4dfaa0d2366aa135514357f2f1d8b30666051445a2dccb03ff6b48ef0b", kill_on_drop: false }`
[INFO] [stdout] 6784fd4dfaa0d2366aa135514357f2f1d8b30666051445a2dccb03ff6b48ef0b
