[INFO] fetching crate metrics-exporter-http-async_std 0.1.0...
[INFO] testing metrics-exporter-http-async_std-0.1.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate metrics-exporter-http-async_std 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate metrics-exporter-http-async_std 0.1.0 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate metrics-exporter-http-async_std 0.1.0
[INFO] finished tweaking crates.io crate metrics-exporter-http-async_std 0.1.0
[INFO] tweaked toml for crates.io crate metrics-exporter-http-async_std 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate metrics-exporter-http-async_std 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded metrics-runtime v0.13.0
[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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stdout] 7befb351028efbc2ca4cb1628af1e48b8c405532f7f6f606320014c7bf0a05c4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "7befb351028efbc2ca4cb1628af1e48b8c405532f7f6f606320014c7bf0a05c4"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling proc-macro2 v1.0.13
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling syn v1.0.22
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling pin-project-lite v0.1.5
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-timer v2.0.2
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]    Compiling metrics-core v0.5.2
[INFO] [stderr]    Compiling crossbeam-channel v0.4.2
[INFO] [stderr]    Compiling kv-log-macro v1.0.5
[INFO] [stderr]    Compiling quote v1.0.5
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling async-task v1.3.1
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling async-std v1.5.0
[INFO] [stderr]    Compiling metrics-exporter-http-async_std v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.24s
[INFO] running `"docker" "inspect" "7befb351028efbc2ca4cb1628af1e48b8c405532f7f6f606320014c7bf0a05c4"`
[INFO] running `"docker" "rm" "-f" "7befb351028efbc2ca4cb1628af1e48b8c405532f7f6f606320014c7bf0a05c4"`
[INFO] [stdout] 7befb351028efbc2ca4cb1628af1e48b8c405532f7f6f606320014c7bf0a05c4
[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=warn" "-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" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1e86d2a661156b2d365fec98f69fa836bc28ad8ccf518a3ef8d68b1805db1c5a
[INFO] running `"docker" "start" "-a" "1e86d2a661156b2d365fec98f69fa836bc28ad8ccf518a3ef8d68b1805db1c5a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling bytes v0.5.4
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling futures-sink v0.3.5
[INFO] [stderr]    Compiling try-lock v0.2.2
[INFO] [stderr]    Compiling linked-hash-map v0.5.3
[INFO] [stderr]    Compiling tower-service v0.3.0
[INFO] [stderr]    Compiling metrics v0.12.1
[INFO] [stderr]    Compiling arc-swap v0.3.11
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling im v12.3.4
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling quanta v0.3.1
[INFO] [stderr]    Compiling smallvec v0.6.13
[INFO] [stderr]    Compiling hdrhistogram v6.3.4
[INFO] [stderr]    Compiling yaml-rust v0.4.3
[INFO] [stderr]    Compiling pin-project-internal v0.4.16
[INFO] [stderr]    Compiling tokio v0.2.21
[INFO] [stderr]    Compiling http v0.2.1
[INFO] [stderr]    Compiling sized-chunks v0.1.3
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling pin-project v0.4.16
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling metrics-exporter-log v0.4.0
[INFO] [stderr]    Compiling h2 v0.2.5
[INFO] [stderr]    Compiling metrics-util v0.3.1
[INFO] [stderr]    Compiling serde_json v1.0.53
[INFO] [stderr]    Compiling serde_yaml v0.8.12
[INFO] [stderr]    Compiling metrics-observer-prometheus v0.1.3
[INFO] [stderr]    Compiling metrics-observer-yaml v0.1.1
[INFO] [stderr]    Compiling metrics-observer-json v0.1.1
[INFO] [stderr]    Compiling hyper v0.13.5
[INFO] [stderr]    Compiling metrics-exporter-http v0.3.0
[INFO] [stderr]    Compiling metrics-runtime v0.13.0
[INFO] [stderr]    Compiling metrics-exporter-http-async_std v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `metrics_exporter_async_std`
[INFO] [stderr]  --> examples/basic.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use metrics_exporter_async_std::HttpExporter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ use of undeclared type or module `metrics_exporter_async_std`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `metrics-exporter-http-async_std`.
[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 `"docker" "inspect" "1e86d2a661156b2d365fec98f69fa836bc28ad8ccf518a3ef8d68b1805db1c5a"`
[INFO] running `"docker" "rm" "-f" "1e86d2a661156b2d365fec98f69fa836bc28ad8ccf518a3ef8d68b1805db1c5a"`
[INFO] [stdout] 1e86d2a661156b2d365fec98f69fa836bc28ad8ccf518a3ef8d68b1805db1c5a