[INFO] cloning repository https://github.com/LU15W1R7H/crawler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LU15W1R7H/crawler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLU15W1R7H%2Fcrawler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLU15W1R7H%2Fcrawler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 91e7998761a961579c975769fe7aeb15d6717ac1
[INFO] checking LU15W1R7H/crawler against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLU15W1R7H%2Fcrawler" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LU15W1R7H/crawler on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LU15W1R7H/crawler
[INFO] finished tweaking git repo https://github.com/LU15W1R7H/crawler
[INFO] tweaked toml for git repo https://github.com/LU15W1R7H/crawler written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/LU15W1R7H/crawler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded console v0.11.3
[INFO] [stderr]   Downloaded terminal_size v0.1.12
[INFO] [stderr]   Downloaded indicatif v0.14.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", 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] 246fbd3a54bb40611d71695a49973788d7e792307a7b473456056ff860dbb95f
[INFO] running `Command { std: "docker" "start" "-a" "246fbd3a54bb40611d71695a49973788d7e792307a7b473456056ff860dbb95f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "246fbd3a54bb40611d71695a49973788d7e792307a7b473456056ff860dbb95f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "246fbd3a54bb40611d71695a49973788d7e792307a7b473456056ff860dbb95f", kill_on_drop: false }`
[INFO] [stdout] 246fbd3a54bb40611d71695a49973788d7e792307a7b473456056ff860dbb95f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 101e4b06d7db6b4761ea81010832740323fa5a7a75ff1fad0ce06c06b20265ce
[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" "101e4b06d7db6b4761ea81010832740323fa5a7a75ff1fad0ce06c06b20265ce", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.29
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]    Compiling eyre v0.4.2
[INFO] [stderr]    Compiling crawler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking lwirth-rs v0.1.0 (https://github.com/LU15W1R7H/lwirth-rs#1f6c2642)
[INFO] [stderr]    Compiling openssl-sys v0.9.57
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking terminal_size v0.1.12
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking color-backtrace v0.4.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]     Checking predicates v1.0.4
[INFO] [stderr]     Checking console v0.11.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking indicatif v0.14.0
[INFO] [stderr]     Checking assert_cmd v1.0.1
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling serde_json v1.0.53
[INFO] [stderr]     Checking tracing-serde v0.1.1
[INFO] [stderr]     Checking string_cache v0.8.0
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking tracing-subscriber v0.2.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.17
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[INFO] [stderr]     Checking tokio v0.2.21
[INFO] [stderr]     Checking thiserror v1.0.19
[INFO] [stderr]     Checking tracing v0.1.14
[INFO] [stderr]     Checking tracing-error v0.1.2
[INFO] [stderr]     Checking color-spantrace v0.1.1
[INFO] [stderr]     Checking color-eyre v0.3.2
[INFO] [stderr]     Checking pin-project v0.4.17
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]     Checking h2 v0.2.5
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking hyper v0.13.6
[INFO] [stderr]     Checking hyper-tls v0.4.1
[INFO] [stderr]     Checking reqwest v0.10.6
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/main.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | #![feature(drain_filter)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/main.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | #![feature(drain_filter)]
[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 `crawler`
[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] [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: build failed
[INFO] running `Command { std: "docker" "inspect" "101e4b06d7db6b4761ea81010832740323fa5a7a75ff1fad0ce06c06b20265ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "101e4b06d7db6b4761ea81010832740323fa5a7a75ff1fad0ce06c06b20265ce", kill_on_drop: false }`
[INFO] [stdout] 101e4b06d7db6b4761ea81010832740323fa5a7a75ff1fad0ce06c06b20265ce