[INFO] cloning repository https://github.com/abstractqqq/rust_polynomials_fft
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/abstractqqq/rust_polynomials_fft" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabstractqqq%2Frust_polynomials_fft", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabstractqqq%2Frust_polynomials_fft'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 51518508cf1dc26dc8f6b90faac8617c9f968077
[INFO] checking abstractqqq/rust_polynomials_fft/51518508cf1dc26dc8f6b90faac8617c9f968077 against master#e08b80c0fb7667bdcd040761891701e576c42ec8 for pr-129021
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabstractqqq%2Frust_polynomials_fft" "/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/abstractqqq/rust_polynomials_fft on toolchain e08b80c0fb7667bdcd040761891701e576c42ec8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e08b80c0fb7667bdcd040761891701e576c42ec8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/abstractqqq/rust_polynomials_fft
[INFO] finished tweaking git repo https://github.com/abstractqqq/rust_polynomials_fft
[INFO] tweaked toml for git repo https://github.com/abstractqqq/rust_polynomials_fft written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/abstractqqq/rust_polynomials_fft 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" "+e08b80c0fb7667bdcd040761891701e576c42ec8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded polars-utils v0.26.1
[INFO] [stderr]   Downloaded polars-arrow v0.26.1
[INFO] [stderr]   Downloaded polars-ops v0.26.1
[INFO] [stderr]   Downloaded comfy-table v6.1.3
[INFO] [stderr]   Downloaded polars-io v0.26.1
[INFO] [stderr]   Downloaded polars-pipe v0.26.1
[INFO] [stderr]   Downloaded polars v0.26.1
[INFO] [stderr]   Downloaded polars-time v0.26.1
[INFO] [stderr]   Downloaded polars-plan v0.26.1
[INFO] [stderr]   Downloaded polars-lazy v0.26.1
[INFO] [stderr]   Downloaded polars-core v0.26.1
[INFO] [stderr]   Downloaded arrow2 v0.15.0
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+e08b80c0fb7667bdcd040761891701e576c42ec8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 675135ed3ed2bd9667fc84c183623f0e0580d8b9016ecf482c4e48d91a138b58
[INFO] running `Command { std: "docker" "start" "-a" "675135ed3ed2bd9667fc84c183623f0e0580d8b9016ecf482c4e48d91a138b58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "675135ed3ed2bd9667fc84c183623f0e0580d8b9016ecf482c4e48d91a138b58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "675135ed3ed2bd9667fc84c183623f0e0580d8b9016ecf482c4e48d91a138b58", kill_on_drop: false }`
[INFO] [stdout] 675135ed3ed2bd9667fc84c183623f0e0580d8b9016ecf482c4e48d91a138b58
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+e08b80c0fb7667bdcd040761891701e576c42ec8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b98cbfce56ef39a4cb59af3d947e852cb6bd13021dec30e83b6c38a931f0d0ed
[INFO] running `Command { std: "docker" "start" "-a" "b98cbfce56ef39a4cb59af3d947e852cb6bd13021dec30e83b6c38a931f0d0ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]     Checking lexical-util v0.8.5
[INFO] [stderr]    Compiling semver v1.0.16
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.49/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]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[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 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b98cbfce56ef39a4cb59af3d947e852cb6bd13021dec30e83b6c38a931f0d0ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b98cbfce56ef39a4cb59af3d947e852cb6bd13021dec30e83b6c38a931f0d0ed", kill_on_drop: false }`
[INFO] [stdout] b98cbfce56ef39a4cb59af3d947e852cb6bd13021dec30e83b6c38a931f0d0ed