[INFO] cloning repository https://github.com/hangleang/halo2-examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hangleang/halo2-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhangleang%2Fhalo2-examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhangleang%2Fhalo2-examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7fd0a17e8a936e958fcffd443b88cd7d5976e25b
[INFO] checking hangleang/halo2-examples against try#be699666730c5a1745838222e98e2d85019affdc for pr-134300
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhangleang%2Fhalo2-examples" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hangleang/halo2-examples on toolchain be699666730c5a1745838222e98e2d85019affdc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+be699666730c5a1745838222e98e2d85019affdc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hangleang/halo2-examples
[INFO] finished tweaking git repo https://github.com/hangleang/halo2-examples
[INFO] tweaked toml for git repo https://github.com/hangleang/halo2-examples written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/hangleang/halo2-examples 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" "+be699666730c5a1745838222e98e2d85019affdc" "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 freetype v0.7.2
[INFO] [stderr]   Downloaded pathfinder_simd v0.5.3
[INFO] [stderr]   Downloaded halo2_proofs v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+be699666730c5a1745838222e98e2d85019affdc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eee0126a34410d135c595e02b1e389767d17aa4cda2c8299eeae9d934d580d37
[INFO] running `Command { std: "docker" "start" "-a" "eee0126a34410d135c595e02b1e389767d17aa4cda2c8299eeae9d934d580d37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eee0126a34410d135c595e02b1e389767d17aa4cda2c8299eeae9d934d580d37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eee0126a34410d135c595e02b1e389767d17aa4cda2c8299eeae9d934d580d37", kill_on_drop: false }`
[INFO] [stdout] eee0126a34410d135c595e02b1e389767d17aa4cda2c8299eeae9d934d580d37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+be699666730c5a1745838222e98e2d85019affdc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be850c07d6ed894eae69aa3dd39cc4aa014bd88f5a9d7440329b59bfd753878e
[INFO] running `Command { std: "docker" "start" "-a" "be850c07d6ed894eae69aa3dd39cc4aa014bd88f5a9d7440329b59bfd753878e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling proc-macro2 v1.0.81
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling unicode-ident v1.0.12
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[INFO] [stderr]    Compiling rayon-core v1.12.1
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[INFO] [stderr]     Checking arrayref v0.3.7
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[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]     Checking either v1.11.0
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[INFO] [stderr]     Checking bitvec v1.0.1
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[INFO] [stderr]     Checking rand_core v0.6.4
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[INFO] [stderr]     Checking rand v0.8.5
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[INFO] [stderr]     Checking halo2_proofs v0.2.0
[INFO] [stderr]     Checking halo2-examples v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `is_zero_expr` is never read
[INFO] [stdout]   --> src/gadgets/is_zero.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct IsZeroConfig<F: FieldExt> {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 9  |     pub value_inv: Column<Advice>,
[INFO] [stdout] 10 |     pub is_zero_expr: Expression<F>
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IsZeroConfig` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `is_zero_expr` is never read
[INFO] [stdout]   --> src/gadgets/is_zero.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct IsZeroConfig<F: FieldExt> {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 9  |     pub value_inv: Column<Advice>,
[INFO] [stdout] 10 |     pub is_zero_expr: Expression<F>
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IsZeroConfig` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.06s
[INFO] running `Command { std: "docker" "inspect" "be850c07d6ed894eae69aa3dd39cc4aa014bd88f5a9d7440329b59bfd753878e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be850c07d6ed894eae69aa3dd39cc4aa014bd88f5a9d7440329b59bfd753878e", kill_on_drop: false }`
[INFO] [stdout] be850c07d6ed894eae69aa3dd39cc4aa014bd88f5a9d7440329b59bfd753878e