[INFO] cloning repository https://github.com/eeeeeta/sqa-ffmpeg
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eeeeeta/sqa-ffmpeg" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feeeeeta%2Fsqa-ffmpeg"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feeeeeta%2Fsqa-ffmpeg'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8d6a8245517d636e57c18c0f96cc8a6d6ecbf146
[INFO] checking eeeeeta/sqa-ffmpeg against beta-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feeeeeta%2Fsqa-ffmpeg" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/eeeeeta/sqa-ffmpeg on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/eeeeeta/sqa-ffmpeg
[INFO] finished tweaking git repo https://github.com/eeeeeta/sqa-ffmpeg
[INFO] tweaked toml for git repo https://github.com/eeeeeta/sqa-ffmpeg written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/meh/rust-ffmpeg-sys`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=allow" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c1ce0810c0c3edf71ee357f345c62fb4be4f31a24e2854c5e683710573d8f760
[INFO] running `"docker" "start" "-a" "c1ce0810c0c3edf71ee357f345c62fb4be4f31a24e2854c5e683710573d8f760"`
[INFO] [stderr]     Checking nodrop-union v0.1.11
[INFO] [stderr]     Checking bounded-spsc-queue v0.4.0
[INFO] [stderr]     Checking libloading v0.4.3
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]    Compiling ffmpeg-sys v4.0.2 (https://github.com/meh/rust-ffmpeg-sys#4f14151b)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nodrop-union-0.1.11/src/lib.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | #![feature(untagged_unions)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `nodrop-union`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bounded-spsc-queue-0.4.0/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(allocator_api)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `bounded-spsc-queue`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "c1ce0810c0c3edf71ee357f345c62fb4be4f31a24e2854c5e683710573d8f760"`
[INFO] running `"docker" "rm" "-f" "c1ce0810c0c3edf71ee357f345c62fb4be4f31a24e2854c5e683710573d8f760"`
[INFO] [stdout] c1ce0810c0c3edf71ee357f345c62fb4be4f31a24e2854c5e683710573d8f760