[INFO] cloning repository https://github.com/6iKezbAD3CZnf/learning-bellman-groth16
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/6iKezbAD3CZnf/learning-bellman-groth16" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F6iKezbAD3CZnf%2Flearning-bellman-groth16", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F6iKezbAD3CZnf%2Flearning-bellman-groth16'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 513ab46ffc740ce14e70ea1684a03050cf0a7eaa
[INFO] checking 6iKezbAD3CZnf/learning-bellman-groth16 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F6iKezbAD3CZnf%2Flearning-bellman-groth16" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/6iKezbAD3CZnf/learning-bellman-groth16 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/6iKezbAD3CZnf/learning-bellman-groth16
[INFO] finished tweaking git repo https://github.com/6iKezbAD3CZnf/learning-bellman-groth16
[INFO] tweaked toml for git repo https://github.com/6iKezbAD3CZnf/learning-bellman-groth16 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/6iKezbAD3CZnf/learning-bellman-groth16 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 crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.13
[INFO] [stderr]   Downloaded bellman v0.13.1
[INFO] [stderr]   Downloaded pairing v0.22.0
[INFO] [stderr]   Downloaded blake2s_simd v1.0.0
[INFO] [stderr]   Downloaded rayon-core v1.10.1
[INFO] [stderr]   Downloaded rayon v1.6.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 88741e39b3c51e260e5c057098b51031d42a6e9c7dca7739561689e717807673
[INFO] running `Command { std: "docker" "start" "-a" "88741e39b3c51e260e5c057098b51031d42a6e9c7dca7739561689e717807673", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88741e39b3c51e260e5c057098b51031d42a6e9c7dca7739561689e717807673", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88741e39b3c51e260e5c057098b51031d42a6e9c7dca7739561689e717807673", kill_on_drop: false }`
[INFO] [stdout] 88741e39b3c51e260e5c057098b51031d42a6e9c7dca7739561689e717807673
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 6cfcc7fea68bc9487ac49cb3e413ded5b9310a567211a17352488f44a5448ada
[INFO] running `Command { std: "docker" "start" "-a" "6cfcc7fea68bc9487ac49cb3e413ded5b9310a567211a17352488f44a5448ada", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]     Checking blake2s_simd v1.0.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rayon v1.6.1
[INFO] [stderr]     Checking ff v0.12.1
[INFO] [stderr]     Checking group v0.12.1
[INFO] [stderr]     Checking pairing v0.22.0
[INFO] [stderr]     Checking bellman v0.13.1
[INFO] [stderr]     Checking learning-bellman-groth16 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.04s
[INFO] running `Command { std: "docker" "inspect" "6cfcc7fea68bc9487ac49cb3e413ded5b9310a567211a17352488f44a5448ada", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cfcc7fea68bc9487ac49cb3e413ded5b9310a567211a17352488f44a5448ada", kill_on_drop: false }`
[INFO] [stdout] 6cfcc7fea68bc9487ac49cb3e413ded5b9310a567211a17352488f44a5448ada
[INFO] checking 6iKezbAD3CZnf/learning-bellman-groth16 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F6iKezbAD3CZnf%2Flearning-bellman-groth16" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/6iKezbAD3CZnf/learning-bellman-groth16 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/6iKezbAD3CZnf/learning-bellman-groth16
[INFO] finished tweaking git repo https://github.com/6iKezbAD3CZnf/learning-bellman-groth16
[INFO] tweaked toml for git repo https://github.com/6iKezbAD3CZnf/learning-bellman-groth16 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/6iKezbAD3CZnf/learning-bellman-groth16 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44a90abf26992e02fc282f3dc84e4e38f8f210a1fb854072bbe263eb2bca33e5
[INFO] running `Command { std: "docker" "start" "-a" "44a90abf26992e02fc282f3dc84e4e38f8f210a1fb854072bbe263eb2bca33e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44a90abf26992e02fc282f3dc84e4e38f8f210a1fb854072bbe263eb2bca33e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44a90abf26992e02fc282f3dc84e4e38f8f210a1fb854072bbe263eb2bca33e5", kill_on_drop: false }`
[INFO] [stdout] 44a90abf26992e02fc282f3dc84e4e38f8f210a1fb854072bbe263eb2bca33e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2d6d87831dcef80e8ffe56ce985b0e3bb254e2ae4de699bce91a010b1dc7d71
[INFO] running `Command { std: "docker" "start" "-a" "a2d6d87831dcef80e8ffe56ce985b0e3bb254e2ae4de699bce91a010b1dc7d71", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking blake2s_simd v1.0.0
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rayon v1.6.1
[INFO] [stderr]     Checking ff v0.12.1
[INFO] [stderr]     Checking group v0.12.1
[INFO] [stderr]     Checking pairing v0.22.0
[INFO] [stderr]     Checking bellman v0.13.1
[INFO] [stderr]     Checking learning-bellman-groth16 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.32s
[INFO] running `Command { std: "docker" "inspect" "a2d6d87831dcef80e8ffe56ce985b0e3bb254e2ae4de699bce91a010b1dc7d71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2d6d87831dcef80e8ffe56ce985b0e3bb254e2ae4de699bce91a010b1dc7d71", kill_on_drop: false }`
[INFO] [stdout] a2d6d87831dcef80e8ffe56ce985b0e3bb254e2ae4de699bce91a010b1dc7d71