[INFO] cloning repository https://github.com/Divide-By-0/halo2-learning-group
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Divide-By-0/halo2-learning-group" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDivide-By-0%2Fhalo2-learning-group", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDivide-By-0%2Fhalo2-learning-group'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9dc6d48d64d8d920e2550657666e1c245b35fb07
[INFO] checking Divide-By-0/halo2-learning-group against master#f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b for pr-148329
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDivide-By-0%2Fhalo2-learning-group" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Divide-By-0/halo2-learning-group
[INFO] finished tweaking git repo https://github.com/Divide-By-0/halo2-learning-group
[INFO] tweaked toml for git repo https://github.com/Divide-By-0/halo2-learning-group written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Divide-By-0/halo2-learning-group on toolchain f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Divide-By-0/halo2-learning-group 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" "+f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b" "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]  Downloading crates ...
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.89
[INFO] [stderr]   Downloaded plotters-bitmap v0.3.2
[INFO] [stderr]   Downloaded tabbycat v0.1.2
[INFO] [stderr]   Downloaded pathfinder_simd v0.5.1
[INFO] [stderr]   Downloaded pasta_curves v0.5.0
[INFO] [stderr]   Downloaded pest v2.5.4
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.89
[INFO] [stderr]   Downloaded cxx v1.0.89
[INFO] [stderr]   Downloaded cxx-build v1.0.89
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4edc6a8d9855b5e6923b6c0dff602df31e5f20f9d6e0589c4b723074896539a3
[INFO] running `Command { std: "docker" "start" "-a" "4edc6a8d9855b5e6923b6c0dff602df31e5f20f9d6e0589c4b723074896539a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4edc6a8d9855b5e6923b6c0dff602df31e5f20f9d6e0589c4b723074896539a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4edc6a8d9855b5e6923b6c0dff602df31e5f20f9d6e0589c4b723074896539a3", kill_on_drop: false }`
[INFO] [stdout] 4edc6a8d9855b5e6923b6c0dff602df31e5f20f9d6e0589c4b723074896539a3
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+f5711a55f5d5e2f942057d0f6d648dd2d8b2c37b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad6d5bf7b7013bf58c29203aca596e119bc2041e4e09af0a1606f00121c490f1
[INFO] running `Command { std: "docker" "start" "-a" "ad6d5bf7b7013bf58c29203aca596e119bc2041e4e09af0a1606f00121c490f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling rayon-core v1.10.2
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking blake2b_simd v1.0.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.51/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ad6d5bf7b7013bf58c29203aca596e119bc2041e4e09af0a1606f00121c490f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad6d5bf7b7013bf58c29203aca596e119bc2041e4e09af0a1606f00121c490f1", kill_on_drop: false }`
[INFO] [stdout] ad6d5bf7b7013bf58c29203aca596e119bc2041e4e09af0a1606f00121c490f1
