[INFO] fetching crate easyfft 0.4.0...
[INFO] checking easyfft-0.4.0 against master#74c3f5a146860c94ff4d179fc3bfa34f879adf41 for pr-120248
[INFO] extracting crate easyfft 0.4.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate easyfft 0.4.0 on toolchain 74c3f5a146860c94ff4d179fc3bfa34f879adf41
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+74c3f5a146860c94ff4d179fc3bfa34f879adf41" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate easyfft 0.4.0
[INFO] finished tweaking crates.io crate easyfft 0.4.0
[INFO] tweaked toml for crates.io crate easyfft 0.4.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+74c3f5a146860c94ff4d179fc3bfa34f879adf41" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+74c3f5a146860c94ff4d179fc3bfa34f879adf41" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded array-init v2.1.0
[INFO] [stderr]   Downloaded realfft v3.3.0
[INFO] [stderr]   Downloaded primal-check v0.3.3
[INFO] [stderr]   Downloaded transpose v0.2.2
[INFO] [stderr]   Downloaded anymap v1.0.0-beta.2
[INFO] [stderr]   Downloaded rustfft v6.2.0
[INFO] [stderr]   Downloaded generic_singleton v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+74c3f5a146860c94ff4d179fc3bfa34f879adf41" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bbc185ffd41007c992ae2ebf390adc21ad4baa8e11e76d04821dbabe812fd015
[INFO] running `Command { std: "docker" "start" "-a" "bbc185ffd41007c992ae2ebf390adc21ad4baa8e11e76d04821dbabe812fd015", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bbc185ffd41007c992ae2ebf390adc21ad4baa8e11e76d04821dbabe812fd015", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbc185ffd41007c992ae2ebf390adc21ad4baa8e11e76d04821dbabe812fd015", kill_on_drop: false }`
[INFO] [stdout] bbc185ffd41007c992ae2ebf390adc21ad4baa8e11e76d04821dbabe812fd015
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+74c3f5a146860c94ff4d179fc3bfa34f879adf41" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3c5cdf40d1a85bb5cd0e113f2c5272aa6f1120ea804dcc5b9645da7eee2672f
[INFO] running `Command { std: "docker" "start" "-a" "f3c5cdf40d1a85bb5cd0e113f2c5272aa6f1120ea804dcc5b9645da7eee2672f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustfft v6.2.0
[INFO] [stderr]     Checking strength_reduce v0.2.4
[INFO] [stderr]     Checking anymap v1.0.0-beta.2
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.5
[INFO] [stderr]     Checking array-init v2.1.0
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking generic_singleton v0.4.1
[INFO] [stderr]     Checking primal-check v0.3.3
[INFO] [stderr]     Checking transpose v0.2.2
[INFO] [stderr]     Checking realfft v3.3.0
[INFO] [stderr]     Checking easyfft v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `PrivateRealFftUsing` is never used
[INFO] [stdout]   --> src/dyn_size/realfft.rs:80:7
[INFO] [stdout]    |
[INFO] [stdout] 80 | trait PrivateRealFftUsing<T> {
[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] [stdout] warning: trait `PrivateRealFftUsing` is never used
[INFO] [stdout]   --> src/dyn_size/realfft.rs:80:7
[INFO] [stdout]    |
[INFO] [stdout] 80 | trait PrivateRealFftUsing<T> {
[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 [unoptimized + debuginfo] target(s) in 2.68s
[INFO] running `Command { std: "docker" "inspect" "f3c5cdf40d1a85bb5cd0e113f2c5272aa6f1120ea804dcc5b9645da7eee2672f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3c5cdf40d1a85bb5cd0e113f2c5272aa6f1120ea804dcc5b9645da7eee2672f", kill_on_drop: false }`
[INFO] [stdout] f3c5cdf40d1a85bb5cd0e113f2c5272aa6f1120ea804dcc5b9645da7eee2672f