[INFO] cloning repository https://github.com/pen-lang/pen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pen-lang/pen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpen-lang%2Fpen", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpen-lang%2Fpen'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d0c102afa78312bf7b536742ae51e7fe646c733f
[INFO] testing pen-lang/pen against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpen-lang%2Fpen" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pen-lang/pen on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/pen-lang/pen
[INFO] finished tweaking git repo https://github.com/pen-lang/pen
[INFO] tweaked toml for git repo https://github.com/pen-lang/pen written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/pen-lang/pen already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/raviqqe/fmm`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded similar v1.3.0
[INFO] [stderr]   Downloaded llvm-sys v120.2.0
[INFO] [stderr]   Downloaded pen-ffi v0.2.4
[INFO] [stderr]   Downloaded insta v1.7.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 621ae4286849cf62a5afa01cab973ea6da08c5f5facdb0c37e6bb4d61d5d0bc1
[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" "621ae4286849cf62a5afa01cab973ea6da08c5f5facdb0c37e6bb4d61d5d0bc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "621ae4286849cf62a5afa01cab973ea6da08c5f5facdb0c37e6bb4d61d5d0bc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "621ae4286849cf62a5afa01cab973ea6da08c5f5facdb0c37e6bb4d61d5d0bc1", kill_on_drop: false }`
[INFO] [stdout] 621ae4286849cf62a5afa01cab973ea6da08c5f5facdb0c37e6bb4d61d5d0bc1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "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] 4c5a421b36cb93544e61831c6f1a3d9724b3c11cab49c4703a063fd24b3c3370
[INFO] running `Command { std: "docker" "start" "-a" "4c5a421b36cb93544e61831c6f1a3d9724b3c11cab49c4703a063fd24b3c3370", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling fixedbitset v0.4.0
[INFO] [stderr]    Compiling inkwell v0.1.0 (https://github.com/TheDan64/inkwell?branch=master#995152fa)
[INFO] [stderr]    Compiling pen-ffi v0.2.4
[INFO] [stderr]    Compiling pen-ffi v0.2.5 (/opt/rustwide/workdir/lib/ffi)
[INFO] [stderr]    Compiling mir v0.1.0 (/opt/rustwide/workdir/lib/mir)
[INFO] [stderr]    Compiling llvm-sys v120.2.0
[INFO] [stderr]    Compiling combine v4.6.1
[INFO] [stderr]    Compiling petgraph v0.6.0
[INFO] [stderr]    Compiling prelude v0.1.0 (/opt/rustwide/workdir/lib/prelude/ffi)
[INFO] [stderr]    Compiling core v0.1.0 (/opt/rustwide/workdir/lib/core/ffi)
[INFO] [stdout] error: No suitable version of LLVM was found system-wide or pointed
[INFO] [stdout]        to by LLVM_SYS_120_PREFIX.
[INFO] [stdout] 
[INFO] [stdout]        Consider using `llvmenv` to compile an appropriate copy of LLVM, and
[INFO] [stdout]        refer to the llvm-sys documentation for more information.
[INFO] [stdout] 
[INFO] [stdout]        llvm-sys: https://crates.io/crates/llvm-sys
[INFO] [stdout]        llvmenv: https://crates.io/crates/llvmenv
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/llvm-sys-120.2.0/src/lib.rs:486:1
[INFO] [stdout]     |
[INFO] [stdout] 486 | / std::compile_error!(concat!(
[INFO] [stdout] 487 | |     "No suitable version of LLVM was found system-wide or pointed
[INFO] [stdout] 488 | |        to by LLVM_SYS_",
[INFO] [stdout] 489 | |     env!("CARGO_PKG_VERSION_MAJOR"),
[INFO] [stdout] ...   |
[INFO] [stdout] 496 | |        llvmenv: https://crates.io/crates/llvmenv"
[INFO] [stdout] 497 | | ));
[INFO] [stdout]     | |___^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `llvm-sys` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4c5a421b36cb93544e61831c6f1a3d9724b3c11cab49c4703a063fd24b3c3370", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c5a421b36cb93544e61831c6f1a3d9724b3c11cab49c4703a063fd24b3c3370", kill_on_drop: false }`
[INFO] [stdout] 4c5a421b36cb93544e61831c6f1a3d9724b3c11cab49c4703a063fd24b3c3370