[INFO] fetching crate async-control 0.1.0-alpha.6...
[INFO] checking async-control-0.1.0-alpha.6 against master#d939f708d960161d23b964309ba68ff207fc0ead for pr-70087
[INFO] extracting crate async-control 0.1.0-alpha.6 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate async-control 0.1.0-alpha.6 on toolchain d939f708d960161d23b964309ba68ff207fc0ead
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d939f708d960161d23b964309ba68ff207fc0ead" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate async-control 0.1.0-alpha.6
[INFO] finished tweaking crates.io crate async-control 0.1.0-alpha.6
[INFO] tweaked toml for crates.io crate async-control 0.1.0-alpha.6 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d939f708d960161d23b964309ba68ff207fc0ead" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d939f708d960161d23b964309ba68ff207fc0ead" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+d939f708d960161d23b964309ba68ff207fc0ead" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 44ef2f6878a2bfef73fd15514f8d691adf7c1af4ab5554ada8758ddf7d55576d
[INFO] running `"docker" "start" "-a" "44ef2f6878a2bfef73fd15514f8d691adf7c1af4ab5554ada8758ddf7d55576d"`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]     Checking async-wakers v0.1.0-alpha.13
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]     Checking async-control v0.1.0-alpha.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking async-task v1.3.1
[INFO] [stderr]     Checking tokio v0.2.13
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking async-std v1.5.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.34s
[INFO] running `"docker" "inspect" "44ef2f6878a2bfef73fd15514f8d691adf7c1af4ab5554ada8758ddf7d55576d"`
[INFO] running `"docker" "rm" "-f" "44ef2f6878a2bfef73fd15514f8d691adf7c1af4ab5554ada8758ddf7d55576d"`
[INFO] [stdout] 44ef2f6878a2bfef73fd15514f8d691adf7c1af4ab5554ada8758ddf7d55576d