[INFO] cloning repository https://github.com/ayrat555/el_monitorro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ayrat555/el_monitorro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fayrat555%2Fel_monitorro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fayrat555%2Fel_monitorro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 86e24a4324ac1b82eeab8f43a8960814d336cbe6
[INFO] documenting ayrat555/el_monitorro against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fayrat555%2Fel_monitorro" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ayrat555/el_monitorro on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ayrat555/el_monitorro
[INFO] finished tweaking git repo https://github.com/ayrat555/el_monitorro
[INFO] tweaked toml for git repo https://github.com/ayrat555/el_monitorro written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/ayrat555/el_monitorro already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded backtrace v0.3.49
[INFO] [stderr]   Downloaded feed-rs v0.2.4
[INFO] [stderr]   Downloaded addr2line v0.12.2
[INFO] [stderr]   Downloaded telegram-bot v0.7.0
[INFO] [stderr]   Downloaded atom_syndication v0.9.0
[INFO] [stderr]   Downloaded html2text v0.1.14
[INFO] [stderr]   Downloaded serde-value v0.5.3
[INFO] [stderr]   Downloaded tracing-attributes v0.1.8
[INFO] [stderr]   Downloaded curl v0.4.30
[INFO] [stderr]   Downloaded tracing v0.1.15
[INFO] [stderr]   Downloaded sluice v0.5.2
[INFO] [stderr]   Downloaded quick-error v2.0.0
[INFO] [stderr]   Downloaded curl-sys v0.4.32+curl-7.70.0
[INFO] [stderr]   Downloaded libnghttp2-sys v0.1.4+1.41.0
[INFO] [stderr]   Downloaded quick-xml v0.18.1
[INFO] [stderr]   Downloaded handlebars v3.4.0
[INFO] [stderr]   Downloaded diligent-date-parser v0.1.1
[INFO] [stderr]   Downloaded isahc v0.9.5
[INFO] [stderr]   Downloaded telegram-bot-raw v0.7.0
[INFO] [stderr]   Downloaded tracing-core v0.1.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 371e2263dbe0697b023f202b0758451aac3f50f69309ed367accb02d0b109c29
[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" "371e2263dbe0697b023f202b0758451aac3f50f69309ed367accb02d0b109c29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "371e2263dbe0697b023f202b0758451aac3f50f69309ed367accb02d0b109c29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "371e2263dbe0697b023f202b0758451aac3f50f69309ed367accb02d0b109c29", kill_on_drop: false }`
[INFO] [stdout] 371e2263dbe0697b023f202b0758451aac3f50f69309ed367accb02d0b109c29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "RUSTDOCFLAGS=--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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1e2ecd12717b9777c29623439b0bd30ce7bda4bb91f24dce5bd0e6ef0d3c74f6
[INFO] running `Command { std: "docker" "start" "-a" "1e2ecd12717b9777c29623439b0bd30ce7bda4bb91f24dce5bd0e6ef0d3c74f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling cc v1.0.55
[INFO] [stderr]    Compiling curl v0.4.30
[INFO] [stderr]    Compiling isahc v0.9.5
[INFO] [stderr]     Checking tracing-core v0.1.10
[INFO] [stderr]     Checking addr2line v0.12.2
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking quick-xml v0.18.1
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand v0.7.3
[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-1.3.9/src/lib.rs:618:34
[INFO] [stdout]     |
[INFO] [stdout] 618 | #![cfg_attr(feature = "pattern", feature(pattern))]
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking backtrace v0.3.49
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.4+1.41.0
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling curl-sys v0.4.32+curl-7.70.0
[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" "1e2ecd12717b9777c29623439b0bd30ce7bda4bb91f24dce5bd0e6ef0d3c74f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e2ecd12717b9777c29623439b0bd30ce7bda4bb91f24dce5bd0e6ef0d3c74f6", kill_on_drop: false }`
[INFO] [stdout] 1e2ecd12717b9777c29623439b0bd30ce7bda4bb91f24dce5bd0e6ef0d3c74f6