[INFO] cloning repository https://github.com/wildmouse/halo2-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wildmouse/halo2-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwildmouse%2Fhalo2-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwildmouse%2Fhalo2-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 798ec1d8f6f037e8e67eb4c821c0e606f67575e0
[INFO] checking wildmouse/halo2-playground against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwildmouse%2Fhalo2-playground" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wildmouse/halo2-playground on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wildmouse/halo2-playground
[INFO] finished tweaking git repo https://github.com/wildmouse/halo2-playground
[INFO] tweaked toml for git repo https://github.com/wildmouse/halo2-playground written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/wildmouse/halo2-playground 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.65
[INFO] [stderr]   Downloaded pasta_curves v0.5.1
[INFO] [stderr]   Downloaded quote v1.0.30
[INFO] [stderr]   Downloaded halo2_proofs v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d62a3477d9a48eea903123bb6c0234af83062c3f9ee484de873cca9dab1ad4a2
[INFO] running `Command { std: "docker" "start" "-a" "d62a3477d9a48eea903123bb6c0234af83062c3f9ee484de873cca9dab1ad4a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d62a3477d9a48eea903123bb6c0234af83062c3f9ee484de873cca9dab1ad4a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d62a3477d9a48eea903123bb6c0234af83062c3f9ee484de873cca9dab1ad4a2", kill_on_drop: false }`
[INFO] [stdout] d62a3477d9a48eea903123bb6c0234af83062c3f9ee484de873cca9dab1ad4a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4a3c30731b547d33e272a83aa5a8d69340399eadb9f360c80d847eb48e1eb00
[INFO] running `Command { std: "docker" "start" "-a" "d4a3c30731b547d33e272a83aa5a8d69340399eadb9f360c80d847eb48e1eb00", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.65
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling quote v1.0.30
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling derive_builder v0.9.0
[INFO] [stderr]    Compiling anyhow v1.0.72
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.15
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]     Checking regex-syntax v0.7.4
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking arrayref v0.3.7
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking constant_time_eq v0.2.6
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking pin-project-lite v0.2.10
[INFO] [stderr]     Checking plotters-backend v0.3.5
[INFO] [stderr]     Checking blake2b_simd v1.0.1
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]     Checking aho-corasick v1.0.2
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking plotters v0.3.5
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.26
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]     Checking regex-automata v0.3.3
[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]     Checking regex v1.9.1
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling derive_builder_core v0.9.0
[INFO] [stderr]     Checking tabbycat v0.1.2
[INFO] [stderr]     Checking halo2_proofs v0.3.0
[INFO] [stderr]     Checking halo2-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `dev::MockProver`, `pasta::Fp`
[INFO] [stdout]  --> src/simple_example.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     dev::MockProver,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 5 |     pasta::Fp,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/simple_example.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn main() { 
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/simple_example.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn main() { 
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.75s
[INFO] running `Command { std: "docker" "inspect" "d4a3c30731b547d33e272a83aa5a8d69340399eadb9f360c80d847eb48e1eb00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4a3c30731b547d33e272a83aa5a8d69340399eadb9f360c80d847eb48e1eb00", kill_on_drop: false }`
[INFO] [stdout] d4a3c30731b547d33e272a83aa5a8d69340399eadb9f360c80d847eb48e1eb00