[INFO] crate kissfft 0.0.8 is already in cache
[INFO] extracting crate kissfft 0.0.8 into work/ex/beta-1.37-6/sources/1.36.0/reg/kissfft/0.0.8
[INFO] extracting crate kissfft 0.0.8 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/kissfft/0.0.8
[INFO] validating manifest of kissfft-0.0.8 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kissfft-0.0.8 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kissfft-0.0.8
[INFO] finished frobbing kissfft-0.0.8
[INFO] frobbed toml for kissfft-0.0.8 written to work/ex/beta-1.37-6/sources/1.36.0/reg/kissfft/0.0.8/Cargo.toml
[INFO] started frobbing kissfft-0.0.8
[INFO] finished frobbing kissfft-0.0.8
[INFO] frobbed toml for kissfft-0.0.8 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/kissfft/0.0.8/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing kissfft-0.0.8 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/kissfft/0.0.8:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 988d08edad91054ee08688cf257ca252be5559bc89c6cd813e03d58169f27048
[INFO] running `"docker" "start" "-a" "988d08edad91054ee08688cf257ca252be5559bc89c6cd813e03d58169f27048"`
[INFO] [stderr]    Compiling kissfft v0.0.8 (/opt/crater/workdir)
[INFO] [stderr] error: expected argument name, found `:`
[INFO] [stderr]   --> build.rs:22:28
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let compile_object = |&: filename: &str|
[INFO] [stderr]    |                            ^ expected argument name
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `getenv` in module `std::os`
[INFO] [stderr]   --> build.rs:19:28
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let out_dir = std::os::getenv("OUT_DIR").unwrap_or_else(|| ".".to_string());
[INFO] [stderr]    |                            ^^^^^^ not found in `std::os`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `getenv` in module `std::os`
[INFO] [stderr]   --> build.rs:20:23
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let cc = std::os::getenv("CC").unwrap_or_else(|| "gcc".to_string());
[INFO] [stderr]    |                       ^^^^^^ not found in `std::os`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `getenv` in module `std::os`
[INFO] [stderr]   --> build.rs:21:23
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let ar = std::os::getenv("AR").unwrap_or_else(|| "ar".to_string());
[INFO] [stderr]    |                       ^^^^^^ not found in `std::os`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `kissfft`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "988d08edad91054ee08688cf257ca252be5559bc89c6cd813e03d58169f27048"`
[INFO] running `"docker" "rm" "-f" "988d08edad91054ee08688cf257ca252be5559bc89c6cd813e03d58169f27048"`
[INFO] [stdout] 988d08edad91054ee08688cf257ca252be5559bc89c6cd813e03d58169f27048