[INFO] fetching crate heim-net 0.0.11...
[INFO] checking heim-net-0.0.11 against beta for pr-78714
[INFO] extracting crate heim-net 0.0.11 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate heim-net 0.0.11 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 heim-net 0.0.11
[INFO] finished tweaking crates.io crate heim-net 0.0.11
[INFO] tweaked toml for crates.io crate heim-net 0.0.11 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate heim-net 0.0.11 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stdout] 15133a95c81b01a6441296d44bd831669b1288502d62173523f6e663cbc682de
[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" "15133a95c81b01a6441296d44bd831669b1288502d62173523f6e663cbc682de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15133a95c81b01a6441296d44bd831669b1288502d62173523f6e663cbc682de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15133a95c81b01a6441296d44bd831669b1288502d62173523f6e663cbc682de", kill_on_drop: false }`
[INFO] [stdout] 15133a95c81b01a6441296d44bd831669b1288502d62173523f6e663cbc682de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 6fb40d00c2774569a408b6d420e377e31dd9135056433e9e062c6e1ab75fe889
[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" "6fb40d00c2774569a408b6d420e377e31dd9135056433e9e062c6e1ab75fe889", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core v0.3.7
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling heim-common v0.0.11
[INFO] [stderr]    Compiling pulldown-cmark v0.4.1
[INFO] [stderr]     Checking futures-task v0.3.7
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-rational v0.3.1
[INFO] [stderr]     Checking aho-corasick v0.7.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]    Compiling futures-macro v0.3.7
[INFO] [stderr]    Compiling heim-derive v0.0.10
[INFO] [stderr]     Checking futures-channel v0.3.7
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]     Checking uom v0.30.0
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking futures-util v0.3.7
[INFO] [stderr]     Checking version-sync v0.8.1
[INFO] [stderr]     Checking futures-executor v0.3.7
[INFO] [stderr]     Checking heim-runtime v0.0.7
[INFO] [stderr]     Checking heim-net v0.0.11 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> benches/net.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 `heim-net`
[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" "6fb40d00c2774569a408b6d420e377e31dd9135056433e9e062c6e1ab75fe889", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fb40d00c2774569a408b6d420e377e31dd9135056433e9e062c6e1ab75fe889", kill_on_drop: false }`
[INFO] [stdout] 6fb40d00c2774569a408b6d420e377e31dd9135056433e9e062c6e1ab75fe889