[INFO] fetching crate maybe-async 0.1.3...
[INFO] checking maybe-async-0.1.3 against master#f9fdf642bab2bfcabe1829a4c82aaf055330661b for pr-73102
[INFO] extracting crate maybe-async 0.1.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate maybe-async 0.1.3 on toolchain f9fdf642bab2bfcabe1829a4c82aaf055330661b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f9fdf642bab2bfcabe1829a4c82aaf055330661b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate maybe-async 0.1.3
[INFO] finished tweaking crates.io crate maybe-async 0.1.3
[INFO] tweaked toml for crates.io crate maybe-async 0.1.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f9fdf642bab2bfcabe1829a4c82aaf055330661b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f9fdf642bab2bfcabe1829a4c82aaf055330661b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+f9fdf642bab2bfcabe1829a4c82aaf055330661b" "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] 1bfd5933dcef1637fffe2ff3fafdf4290c36db34a38ffd219a67349a1079c66e
[INFO] running `"docker" "start" "-a" "1bfd5933dcef1637fffe2ff3fafdf4290c36db34a38ffd219a67349a1079c66e"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking ident_case v1.0.1
[INFO] [stderr]     Checking futures-sink v0.3.5
[INFO] [stderr]     Checking strsim v0.9.3
[INFO] [stderr]     Checking dissimilar v1.0.1
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking syn v1.0.31
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling async-trait v0.1.35
[INFO] [stderr]     Checking serde v1.0.111
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking kv-log-macro v1.0.6
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]     Checking piper v0.1.3
[INFO] [stderr]     Checking smol v0.1.11
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling maybe-async v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking async-std v1.6.1
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking serde_json v1.0.55
[INFO] [stderr]     Checking trybuild v1.0.28
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.50s
[INFO] running `"docker" "inspect" "1bfd5933dcef1637fffe2ff3fafdf4290c36db34a38ffd219a67349a1079c66e"`
[INFO] running `"docker" "rm" "-f" "1bfd5933dcef1637fffe2ff3fafdf4290c36db34a38ffd219a67349a1079c66e"`
[INFO] [stdout] 1bfd5933dcef1637fffe2ff3fafdf4290c36db34a38ffd219a67349a1079c66e