[INFO] updating cached repository https://github.com/mmai/kbooks
[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] b0aed5cb272589f97dd78a603711c2164ceda018
[INFO] checking mmai/kbooks against beta-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmai%2Fkbooks" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mmai/kbooks 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/mmai/kbooks
[INFO] finished tweaking git repo https://github.com/mmai/kbooks
[INFO] tweaked toml for git repo https://github.com/mmai/kbooks written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/mmai/kbooks already has a lockfile, it will not be regenerated
[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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 815aee9c7a46902329f4bb0e39c0a74a34850c704a5c665319e80d5f8cd02cda
[INFO] running `"docker" "start" "-a" "815aee9c7a46902329f4bb0e39c0a74a34850c704a5c665319e80d5f8cd02cda"`
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]     Checking copyless v0.1.3
[INFO] [stderr]     Checking ascii_utils v0.9.3
[INFO] [stderr]    Compiling byteorder v0.4.2
[INFO] [stderr]    Compiling gettext-utils v0.1.0 (https://github.com/Plume-org/gettext-macros/?rev=a7c605f7edd6bfbfbfe7778026bfefd88d82db10#a7c605f7)
[INFO] [stderr]    Compiling email v0.0.20
[INFO] [stderr]    Compiling owning_ref v0.4.0
[INFO] [stderr]    Compiling scheduled-thread-pool v0.2.0
[INFO] [stderr]    Compiling pq-sys v0.4.6
[INFO] [stderr]     Checking fast_chemail v0.9.6
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking ring v0.14.6
[INFO] [stderr]     Checking gettext v0.3.0 (https://github.com/Plume-org/gettext/?rev=294c54d74c699fbc66502b480a37cc66c1daa7f3#294c54d7)
[INFO] [stderr]    Compiling libsqlite3-sys v0.12.0
[INFO] [stderr]    Compiling lock_api v0.1.5
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking regex v1.1.7
[INFO] [stderr]     Checking flate2 v1.0.7
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking native-tls v0.2.3
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking http v0.1.17
[INFO] [stderr]     Checking string v0.2.0
[INFO] [stderr]    Compiling gettext-macros v0.4.0 (https://github.com/Plume-org/gettext-macros/?rev=a7c605f7edd6bfbfbfe7778026bfefd88d82db10#a7c605f7)
[INFO] [stderr]     Checking bcrypt v0.2.2
[INFO] [stderr]     Checking r2d2 v0.8.4
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/git/checkouts/gettext-macros-217519cc29cc6df4/a7c605f/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro_hygiene, proc_macro_quote, proc_macro_span, uniform_paths)]
[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 `gettext-macros`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "815aee9c7a46902329f4bb0e39c0a74a34850c704a5c665319e80d5f8cd02cda"`
[INFO] running `"docker" "rm" "-f" "815aee9c7a46902329f4bb0e39c0a74a34850c704a5c665319e80d5f8cd02cda"`
[INFO] [stdout] 815aee9c7a46902329f4bb0e39c0a74a34850c704a5c665319e80d5f8cd02cda