[INFO] crate admin_bot 0.1.0 is already in cache
[INFO] testing admin_bot-0.1.0 against 1.44.0 for beta-1.45-1
[INFO] extracting crate admin_bot 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate admin_bot 0.1.0 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate admin_bot 0.1.0
[INFO] finished tweaking crates.io crate admin_bot 0.1.0
[INFO] tweaked toml for crates.io crate admin_bot 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stdout] b376a03e8804f8a75c1aec27137b0d415c30a5be3c708151f729fe7e14e3c9cf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "b376a03e8804f8a75c1aec27137b0d415c30a5be3c708151f729fe7e14e3c9cf"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling ucd-util v0.1.8
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling erased-serde v0.3.11
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling hyper-multipart-rfc7578 v0.2.0-alpha2
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling env_logger v0.3.5
[INFO] [stderr]    Compiling hyper-tls v0.3.2
[INFO] [stderr]    Compiling derive-error-chain v0.10.1
[INFO] [stderr]    Compiling telebot-derive v0.0.12
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/telebot-derive-0.0.12/src/lib.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 |     #![feature(try_from)]
[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 `telebot-derive`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "b376a03e8804f8a75c1aec27137b0d415c30a5be3c708151f729fe7e14e3c9cf"`
[INFO] running `"docker" "rm" "-f" "b376a03e8804f8a75c1aec27137b0d415c30a5be3c708151f729fe7e14e3c9cf"`
[INFO] [stdout] b376a03e8804f8a75c1aec27137b0d415c30a5be3c708151f729fe7e14e3c9cf