[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] checking ryardley/halo_example against try#e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b for pr-144896
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryardley%2Fhalo_example" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-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-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ryardley/halo_example on toolchain e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "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" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded halo2 v0.0.0
[INFO] [stderr]   Downloaded halo2_gadgets v0.3.1
[INFO] [stderr]   Downloaded halo2_poseidon v0.1.0
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[INFO] [stderr]   Downloaded sinsemilla v0.1.0
[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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce4ac82c04a720d5591c52dd23d4862f904ff72a0581a744cbc3d4cba266ee49
[INFO] running `Command { std: "docker" "start" "-a" "ce4ac82c04a720d5591c52dd23d4862f904ff72a0581a744cbc3d4cba266ee49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce4ac82c04a720d5591c52dd23d4862f904ff72a0581a744cbc3d4cba266ee49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce4ac82c04a720d5591c52dd23d4862f904ff72a0581a744cbc3d4cba266ee49", kill_on_drop: false }`
[INFO] [stdout] ce4ac82c04a720d5591c52dd23d4862f904ff72a0581a744cbc3d4cba266ee49
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+e658ebe4ffa1b515cd2ef06dd428d0d063e2ae6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7f633a4c1da0c8a1c3f62170119c8f094407ca6c218ec7326ccb6034baf65e6
[INFO] running `Command { std: "docker" "start" "-a" "d7f633a4c1da0c8a1c3f62170119c8f094407ca6c218ec7326ccb6034baf65e6", 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]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]     Checking subtle v2.6.1
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking constant_time_eq v0.3.1
[INFO] [stderr]     Checking arrayref v0.3.9
[INFO] [stderr]     Checking arrayvec v0.7.6
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]     Checking once_cell v1.20.2
[INFO] [stderr]    Compiling crunchy v0.2.3
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]     Checking pin-project-lite v0.2.16
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking halo2 v0.0.0
[INFO] [stderr]     Checking tracing-core v0.1.33
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[INFO] [stderr]     Checking rand_chacha v0.3.1
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[INFO] [stderr]     Checking 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)]` 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] [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)]` 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 `dev` profile [unoptimized + debuginfo] target(s) in 17.90s
[INFO] running `Command { std: "docker" "inspect" "d7f633a4c1da0c8a1c3f62170119c8f094407ca6c218ec7326ccb6034baf65e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7f633a4c1da0c8a1c3f62170119c8f094407ca6c218ec7326ccb6034baf65e6", kill_on_drop: false }`
[INFO] [stdout] d7f633a4c1da0c8a1c3f62170119c8f094407ca6c218ec7326ccb6034baf65e6