[INFO] fetching crate kissfft 0.0.8...
[INFO] testing kissfft-0.0.8 against 1.49.0 for beta-1.50-1
[INFO] extracting crate kissfft 0.0.8 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate kissfft 0.0.8 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kissfft 0.0.8
[INFO] finished tweaking crates.io crate kissfft 0.0.8
[INFO] tweaked toml for crates.io crate kissfft 0.0.8 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62c50eb3feb410453ad0432bfab646c14b04f965e12a9d8097defa95a4e18d4a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "62c50eb3feb410453ad0432bfab646c14b04f965e12a9d8097defa95a4e18d4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62c50eb3feb410453ad0432bfab646c14b04f965e12a9d8097defa95a4e18d4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62c50eb3feb410453ad0432bfab646c14b04f965e12a9d8097defa95a4e18d4a", kill_on_drop: false }`
[INFO] [stdout] 62c50eb3feb410453ad0432bfab646c14b04f965e12a9d8097defa95a4e18d4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] efe04c5ddd1289d2d168e95bfa3ca3f0a2d9963ca35e07662cc780eee3371e59
[INFO] running `Command { std: "docker" "start" "-a" "efe04c5ddd1289d2d168e95bfa3ca3f0a2d9963ca35e07662cc780eee3371e59", kill_on_drop: false }`
[INFO] [stderr]    Compiling kissfft v0.0.8 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected parameter name, found `:`
[INFO] [stdout]   --> build.rs:22:28
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let compile_object = |&: filename: &str|
[INFO] [stdout]    |                            ^ expected parameter name
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `getenv` in module `std::os`
[INFO] [stdout]   --> build.rs:19:28
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let out_dir = std::os::getenv("OUT_DIR").unwrap_or_else(|| ".".to_string());
[INFO] [stdout]    |                            ^^^^^^ not found in `std::os`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `getenv` in module `std::os`
[INFO] [stdout]   --> build.rs:20:23
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let cc = std::os::getenv("CC").unwrap_or_else(|| "gcc".to_string());
[INFO] [stdout]    |                       ^^^^^^ not found in `std::os`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `getenv` in module `std::os`
[INFO] [stdout]   --> build.rs:21:23
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let ar = std::os::getenv("AR").unwrap_or_else(|| "ar".to_string());
[INFO] [stdout]    |                       ^^^^^^ not found in `std::os`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kissfft`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "efe04c5ddd1289d2d168e95bfa3ca3f0a2d9963ca35e07662cc780eee3371e59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efe04c5ddd1289d2d168e95bfa3ca3f0a2d9963ca35e07662cc780eee3371e59", kill_on_drop: false }`
[INFO] [stdout] efe04c5ddd1289d2d168e95bfa3ca3f0a2d9963ca35e07662cc780eee3371e59