[INFO] fetching crate datetime_macros 0.1.2...
[INFO] testing datetime_macros-0.1.2 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate datetime_macros 0.1.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate datetime_macros 0.1.2 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate datetime_macros 0.1.2
[INFO] removed path dependency datetime from crates.io crate datetime_macros 0.1.2
[INFO] finished tweaking crates.io crate datetime_macros 0.1.2
[INFO] tweaked toml for crates.io crate datetime_macros 0.1.2 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded regex_macros v0.1.38
[INFO] [stderr]   Downloaded pad v0.1.6
[INFO] [stderr]   Downloaded locale v0.1.8
[INFO] [stderr]   Downloaded datetime v0.1.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 432d079d8a1c30d58485e0f3a42897caabddc797790db4da9a4b6f9c46f0f633
[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" "432d079d8a1c30d58485e0f3a42897caabddc797790db4da9a4b6f9c46f0f633", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "432d079d8a1c30d58485e0f3a42897caabddc797790db4da9a4b6f9c46f0f633", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "432d079d8a1c30d58485e0f3a42897caabddc797790db4da9a4b6f9c46f0f633", kill_on_drop: false }`
[INFO] [stdout] 432d079d8a1c30d58485e0f3a42897caabddc797790db4da9a4b6f9c46f0f633
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0cb5eac330e72d78e6cae76a2f6a78ce8bab0f7d9a0432c9fb00606eac928eb0
[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" "0cb5eac330e72d78e6cae76a2f6a78ce8bab0f7d9a0432c9fb00606eac928eb0", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling pad v0.1.6
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.80/src/lib.rs:451:34
[INFO] [stdout]     |
[INFO] [stdout] 451 | #![cfg_attr(feature = "pattern", feature(pattern))]
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `regex`
[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 `Command { std: "docker" "inspect" "0cb5eac330e72d78e6cae76a2f6a78ce8bab0f7d9a0432c9fb00606eac928eb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cb5eac330e72d78e6cae76a2f6a78ce8bab0f7d9a0432c9fb00606eac928eb0", kill_on_drop: false }`
[INFO] [stdout] 0cb5eac330e72d78e6cae76a2f6a78ce8bab0f7d9a0432c9fb00606eac928eb0