[INFO] cloning repository https://github.com/Fangzhou-Yu/halo2_bubble_sort
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Fangzhou-Yu/halo2_bubble_sort" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFangzhou-Yu%2Fhalo2_bubble_sort", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFangzhou-Yu%2Fhalo2_bubble_sort'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 46e929dcb2eba4481c97f251b08366f0f31afb26
[INFO] checking Fangzhou-Yu/halo2_bubble_sort against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFangzhou-Yu%2Fhalo2_bubble_sort" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Fangzhou-Yu/halo2_bubble_sort 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/Fangzhou-Yu/halo2_bubble_sort
[INFO] finished tweaking git repo https://github.com/Fangzhou-Yu/halo2_bubble_sort
[INFO] tweaked toml for git repo https://github.com/Fangzhou-Yu/halo2_bubble_sort written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Fangzhou-Yu/halo2_bubble_sort 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]     Updating git repository `https://github.com/junyu0312/halo2`
[INFO] [stderr]     Updating git repository `https://github.com/lanbones/pairing`
[INFO] [stderr]     Updating git repository `https://github.com/lanbones/bls12_381.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded core_affinity v0.5.10
[INFO] [stderr]   Downloaded ark-std v0.3.0
[INFO] [stderr]   Downloaded constant_time_eq v0.2.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 4f871ae260afe982c104c6cff0e7ae589fa35850cf73527d0854129c29b503f2
[INFO] running `Command { std: "docker" "start" "-a" "4f871ae260afe982c104c6cff0e7ae589fa35850cf73527d0854129c29b503f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f871ae260afe982c104c6cff0e7ae589fa35850cf73527d0854129c29b503f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f871ae260afe982c104c6cff0e7ae589fa35850cf73527d0854129c29b503f2", kill_on_drop: false }`
[INFO] [stdout] 4f871ae260afe982c104c6cff0e7ae589fa35850cf73527d0854129c29b503f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 40ab4825564f43a2d124a80d2ac89aff6cc39f878b0ab6db3a95b968a83b275b
[INFO] running `Command { std: "docker" "start" "-a" "40ab4825564f43a2d124a80d2ac89aff6cc39f878b0ab6db3a95b968a83b275b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling funty v2.0.0
[INFO] [stderr]    Compiling subtle v2.5.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]    Compiling wyz v0.5.1
[INFO] [stderr]     Checking constant_time_eq v0.2.5
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking blake2b_simd v1.0.1
[INFO] [stderr]    Compiling cuda-config v0.1.0
[INFO] [stderr]    Compiling cuda-driver-sys v0.3.0
[INFO] [stderr]    Compiling bitvec v1.0.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling getrandom v0.2.10
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking core_affinity v0.5.10
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]     Checking ff v0.12.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking group v0.12.1
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]     Checking pairing v0.22.0
[INFO] [stderr]     Checking bls12_381 v0.7.0 (https://github.com/lanbones/bls12_381.git#31fcd53a)
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]     Checking ark-std v0.3.0
[INFO] [stderr]     Checking pairing_bn256 v0.1.1 (https://github.com/lanbones/pairing#5ab08062)
[INFO] [stderr]    Compiling halo2_proofs v0.1.0-beta.1 (https://github.com/junyu0312/halo2?branch=gpu#2af71a92)
[INFO] [stderr]     Checking halo2_bubble_sort v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Div`, `Index`, `Mul`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Mul, Div, Index};
[INFO] [stdout]   |                ^^^  ^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Div`, `Index`, `Mul`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Mul, Div, Index};
[INFO] [stdout]   |                ^^^  ^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `region`
[INFO] [stdout]    --> src/main.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |         region: &mut Region<F>,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_region`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `region`
[INFO] [stdout]    --> src/main.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |         region: &mut Region<F>,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_region`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.47s
[INFO] running `Command { std: "docker" "inspect" "40ab4825564f43a2d124a80d2ac89aff6cc39f878b0ab6db3a95b968a83b275b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40ab4825564f43a2d124a80d2ac89aff6cc39f878b0ab6db3a95b968a83b275b", kill_on_drop: false }`
[INFO] [stdout] 40ab4825564f43a2d124a80d2ac89aff6cc39f878b0ab6db3a95b968a83b275b
[INFO] checking Fangzhou-Yu/halo2_bubble_sort against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFangzhou-Yu%2Fhalo2_bubble_sort" "/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/Fangzhou-Yu/halo2_bubble_sort on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Fangzhou-Yu/halo2_bubble_sort
[INFO] finished tweaking git repo https://github.com/Fangzhou-Yu/halo2_bubble_sort
[INFO] tweaked toml for git repo https://github.com/Fangzhou-Yu/halo2_bubble_sort written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Fangzhou-Yu/halo2_bubble_sort 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5edcfd2ff5bbb884c0dd67249728298e80e7a174b353614951282fdd7d2fbe85
[INFO] running `Command { std: "docker" "start" "-a" "5edcfd2ff5bbb884c0dd67249728298e80e7a174b353614951282fdd7d2fbe85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5edcfd2ff5bbb884c0dd67249728298e80e7a174b353614951282fdd7d2fbe85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5edcfd2ff5bbb884c0dd67249728298e80e7a174b353614951282fdd7d2fbe85", kill_on_drop: false }`
[INFO] [stdout] 5edcfd2ff5bbb884c0dd67249728298e80e7a174b353614951282fdd7d2fbe85
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c54de4e558fa865437de1d8b1d026a64b97b410c9ac28c79d7eddaddac2e846
[INFO] running `Command { std: "docker" "start" "-a" "7c54de4e558fa865437de1d8b1d026a64b97b410c9ac28c79d7eddaddac2e846", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling funty v2.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling subtle v2.5.0
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking constant_time_eq v0.2.5
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]    Compiling wyz v0.5.1
[INFO] [stderr]     Checking blake2b_simd v1.0.1
[INFO] [stderr]    Compiling cuda-config v0.1.0
[INFO] [stderr]    Compiling bitvec v1.0.1
[INFO] [stderr]    Compiling cuda-driver-sys v0.3.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]     Checking core_affinity v0.5.10
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking ff v0.12.1
[INFO] [stderr]     Checking group v0.12.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]     Checking pairing v0.22.0
[INFO] [stderr]     Checking bls12_381 v0.7.0 (https://github.com/lanbones/bls12_381.git#31fcd53a)
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]     Checking pairing_bn256 v0.1.1 (https://github.com/lanbones/pairing#5ab08062)
[INFO] [stderr]     Checking ark-std v0.3.0
[INFO] [stderr]    Compiling halo2_proofs v0.1.0-beta.1 (https://github.com/junyu0312/halo2?branch=gpu#2af71a92)
[INFO] [stderr]     Checking halo2_bubble_sort v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Div`, `Index`, `Mul`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Mul, Div, Index};
[INFO] [stdout]   |                ^^^  ^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Div`, `Index`, `Mul`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Mul, Div, Index};
[INFO] [stdout]   |                ^^^  ^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `region`
[INFO] [stdout]    --> src/main.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |         region: &mut Region<F>,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_region`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `region`
[INFO] [stdout]    --> src/main.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |         region: &mut Region<F>,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_region`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.57s
[INFO] running `Command { std: "docker" "inspect" "7c54de4e558fa865437de1d8b1d026a64b97b410c9ac28c79d7eddaddac2e846", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c54de4e558fa865437de1d8b1d026a64b97b410c9ac28c79d7eddaddac2e846", kill_on_drop: false }`
[INFO] [stdout] 7c54de4e558fa865437de1d8b1d026a64b97b410c9ac28c79d7eddaddac2e846