[INFO] cloning repository https://github.com/luckychacha/halo2-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luckychacha/halo2-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluckychacha%2Fhalo2-learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluckychacha%2Fhalo2-learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 54d36ffa48f381e1d2f0d61041eafe0fd31ef8fc
[INFO] checking luckychacha/halo2-learning against try#66388cc165a6c4ac98c074dc9f0281ff23528c55 for pr-150727
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluckychacha%2Fhalo2-learning" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/luckychacha/halo2-learning
[INFO] finished tweaking git repo https://github.com/luckychacha/halo2-learning
[INFO] tweaked toml for git repo https://github.com/luckychacha/halo2-learning written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/luckychacha/halo2-learning on toolchain 66388cc165a6c4ac98c074dc9f0281ff23528c55
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/luckychacha/halo2-learning 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" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/zcash/halo2.git`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded plotters-bitmap v0.3.3
[INFO] [stderr]   Downloaded freetype v0.7.1
[INFO] [stderr]   Downloaded ttf-parser v0.17.1
[INFO] [stderr]   Downloaded derive_builder_core v0.9.0
[INFO] [stderr]   Downloaded derive_builder v0.9.0
[INFO] [stderr]   Downloaded tabbycat v0.1.2
[INFO] [stderr]   Downloaded pathfinder_simd v0.5.3
[INFO] [stderr]   Downloaded freetype-sys v0.19.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b4927988524b6c02c194cae3f86f5821382564ac46f88a0cc0cb377db810c55
[INFO] running `Command { std: "docker" "start" "-a" "3b4927988524b6c02c194cae3f86f5821382564ac46f88a0cc0cb377db810c55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b4927988524b6c02c194cae3f86f5821382564ac46f88a0cc0cb377db810c55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b4927988524b6c02c194cae3f86f5821382564ac46f88a0cc0cb377db810c55", kill_on_drop: false }`
[INFO] [stdout] 3b4927988524b6c02c194cae3f86f5821382564ac46f88a0cc0cb377db810c55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b51cff930389feac3edeb0f8e7970b975d048df3df6565406c2c2454a82e3e10
[INFO] running `Command { std: "docker" "start" "-a" "b51cff930389feac3edeb0f8e7970b975d048df3df6565406c2c2454a82e3e10", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling syn v2.0.60
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]     Checking either v1.11.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking blake2b_simd v1.0.2
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking pin-project-lite v0.2.14
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]     Checking getrandom v0.2.14
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rayon-core v1.12.1
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking ff v0.13.0
[INFO] [stderr]     Checking group v0.13.0
[INFO] [stderr]     Checking pasta_curves v0.5.1
[INFO] [stderr]     Checking maybe-rayon v0.1.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking halo2_proofs v0.3.0 (https://github.com/zcash/halo2.git#7df93fd8)
[INFO] [stderr]     Checking halo2-learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `halo2-learning` (example "bls") due to 1 previous error
[INFO] [stdout] error[E0601]: `main` function not found in crate `bls`
[INFO] [stdout]    --> examples/bls.rs:155:6
[INFO] [stdout]     |
[INFO] [stdout] 155 | // }
[INFO] [stdout]     |     ^ consider adding a `main` function to `examples/bls.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ConstraintSystem`
[INFO] [stdout]  --> examples/simple.rs:4:38
[INFO] [stdout]   |
[INFO] [stdout] 4 |     plonk::{Advice, Circuit, Column, ConstraintSystem, Error, Instance, Selector},
[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 variable: `gate`
[INFO] [stdout]    --> examples/simple.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let gate = meta.create_gate("mul_gate", |meta| {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_gate`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> examples/simple_chip.rs:215:9
[INFO] [stdout]     |
[INFO] [stdout] 215 |         mut layouter: impl halo2_proofs::circuit::Layouter<F>,
[INFO] [stdout]     |         ----^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `layouter`
[INFO] [stdout]    --> examples/simple_chip.rs:215:9
[INFO] [stdout]     |
[INFO] [stdout] 215 |         mut layouter: impl halo2_proofs::circuit::Layouter<F>,
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_layouter`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> examples/simple_chip.rs:247:9
[INFO] [stdout]     |
[INFO] [stdout] 247 |     let mut public_inputs = vec![];
[INFO] [stdout]     |         ----^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a`, `b`, and `c` are never read
[INFO] [stdout]   --> examples/simple_chip.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct MyCircuit<F: PrimeField> {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 14 |     a: Value<F>,
[INFO] [stdout]    |     ^
[INFO] [stdout] 15 |     b: Value<F>,
[INFO] [stdout]    |     ^
[INFO] [stdout] 16 |     c: 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: fields `advice`, `instance`, `s_mul`, `s_add`, and `s_cube` are never read
[INFO] [stdout]   --> examples/simple_chip.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct CircuitConfig {
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] 21 |     advice: [Column<Advice>; 2],
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 22 |     instance: Column<Instance>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 23 |     s_mul: Selector,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 24 |     s_add: Selector,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 25 |     s_cube: Selector,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CircuitConfig` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `config` is never read
[INFO] [stdout]   --> examples/simple_chip.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct MyChip<F: PrimeField> {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 30 |     config: CircuitConfig,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MyChip` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `assign` and `expose_out` are never used
[INFO] [stdout]    --> examples/simple_chip.rs:90:8
[INFO] [stdout]     |
[INFO] [stdout]  34 | impl<F: PrimeField> MyChip<F> {
[INFO] [stdout]     | ----------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  90 |     fn assign(
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 180 |     fn expose_out(
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Number` is never constructed
[INFO] [stdout]    --> examples/simple_chip.rs:197:8
[INFO] [stdout]     |
[INFO] [stdout] 197 | struct Number<F: PrimeField>(AssignedCell<F, F>);
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prover`
[INFO] [stdout]    --> examples/fibo_1.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |     let prover = MockProver::run(k, &circuit, vec![public_inputs.clone()]).unwrap();
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_prover`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b51cff930389feac3edeb0f8e7970b975d048df3df6565406c2c2454a82e3e10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b51cff930389feac3edeb0f8e7970b975d048df3df6565406c2c2454a82e3e10", kill_on_drop: false }`
[INFO] [stdout] b51cff930389feac3edeb0f8e7970b975d048df3df6565406c2c2454a82e3e10
