[INFO] updating cached repository https://github.com/leesdolphin/archivelib-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 04e4a25ffc7dfb3551483df5a11b836c58fe8d3a
[INFO] checking leesdolphin/archivelib-rs against beta-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleesdolphin%2Farchivelib-rs" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/leesdolphin/archivelib-rs 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/leesdolphin/archivelib-rs
[INFO] removed workspace from git repo https://github.com/leesdolphin/archivelib-rs
[INFO] removed path dependency archivelib-sys from git repo https://github.com/leesdolphin/archivelib-rs
[INFO] removed path dependency archivelib-sys from git repo https://github.com/leesdolphin/archivelib-rs
[INFO] finished tweaking git repo https://github.com/leesdolphin/archivelib-rs
[INFO] tweaked toml for git repo https://github.com/leesdolphin/archivelib-rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] e4388207ab3fb6550aa7422b3d95432a819754d4dade17f4de18d13fbe5d0c9b
[INFO] running `"docker" "start" "-a" "e4388207ab3fb6550aa7422b3d95432a819754d4dade17f4de18d13fbe5d0c9b"`
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking archivelib v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking humthreads v0.1.4
[INFO] [stderr]    Compiling bindgen v0.51.1
[INFO] [stderr]    Compiling archivelib-sys v0.2.0
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> benches/bench.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> benches/bench.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(concat_idents)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `archivelib`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e4388207ab3fb6550aa7422b3d95432a819754d4dade17f4de18d13fbe5d0c9b"`
[INFO] running `"docker" "rm" "-f" "e4388207ab3fb6550aa7422b3d95432a819754d4dade17f4de18d13fbe5d0c9b"`
[INFO] [stdout] e4388207ab3fb6550aa7422b3d95432a819754d4dade17f4de18d13fbe5d0c9b