[INFO] fetching crate pipelines 0.4.0...
[INFO] checking pipelines-0.4.0 against beta for pr-78714
[INFO] extracting crate pipelines 0.4.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate pipelines 0.4.0 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 crates.io crate pipelines 0.4.0
[INFO] finished tweaking crates.io crate pipelines 0.4.0
[INFO] tweaked toml for crates.io crate pipelines 0.4.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b600fb365d6eb0af069de8720cd6be10ec56d9bf7d3252974a182b34ac7e36ac
[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" "b600fb365d6eb0af069de8720cd6be10ec56d9bf7d3252974a182b34ac7e36ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b600fb365d6eb0af069de8720cd6be10ec56d9bf7d3252974a182b34ac7e36ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b600fb365d6eb0af069de8720cd6be10ec56d9bf7d3252974a182b34ac7e36ac", kill_on_drop: false }`
[INFO] [stdout] b600fb365d6eb0af069de8720cd6be10ec56d9bf7d3252974a182b34ac7e36ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c12b7478c58b2f7d71d1eca687bf69599fea9165121d93c1fa863d3ee388765
[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" "1c12b7478c58b2f7d71d1eca687bf69599fea9165121d93c1fa863d3ee388765", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling cc v1.0.62
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking ucd-util v0.1.8
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking same-file v0.1.3
[INFO] [stderr]     Checking humansize v1.1.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking walkdir v1.0.7
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling miniz-sys v0.1.12
[INFO] [stderr]     Checking flate2 v0.2.20
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking chan v0.1.23
[INFO] [stderr]     Checking pipelines v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> benches/bench.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[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 `pipelines`
[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" "1c12b7478c58b2f7d71d1eca687bf69599fea9165121d93c1fa863d3ee388765", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c12b7478c58b2f7d71d1eca687bf69599fea9165121d93c1fa863d3ee388765", kill_on_drop: false }`
[INFO] [stdout] 1c12b7478c58b2f7d71d1eca687bf69599fea9165121d93c1fa863d3ee388765