[INFO] crate crabler 0.1.11 is already in cache
[INFO] testing crabler-0.1.11 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate crabler 0.1.11 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate crabler 0.1.11 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 crabler 0.1.11
[INFO] finished tweaking crates.io crate crabler 0.1.11
[INFO] tweaked toml for crates.io crate crabler 0.1.11 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] running `"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" "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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 40dd17233506ef408deaf670b934b3478f767e461953863e26eadfa134b31a3d
[INFO] running `"docker" "start" "-a" "40dd17233506ef408deaf670b934b3478f767e461953863e26eadfa134b31a3d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling siphasher v0.3.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling futures-sink v0.3.5
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling bytes v0.5.4
[INFO] [stderr]    Compiling pin-project-lite v0.1.6
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling arc-swap v0.4.6
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling utf-8 v0.7.5
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling tower-service v0.3.0
[INFO] [stderr]    Compiling async-task v3.0.0
[INFO] [stderr]    Compiling scoped-tls-hkt v0.1.2
[INFO] [stderr]    Compiling base64 v0.12.1
[INFO] [stderr]    Compiling futf v0.1.4
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling kv-log-macro v1.0.6
[INFO] [stderr]    Compiling socket2 v0.3.12
[INFO] [stderr]    Compiling signal-hook-registry v1.2.0
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling tendril v0.4.1
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling phf v0.8.0
[INFO] [stderr]    Compiling string_cache v0.8.0
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]    Compiling http v0.2.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.17
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling async-trait v0.1.33
[INFO] [stderr]    Compiling tokio v0.2.21
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]    Compiling crabler_derive v0.1.5
[INFO] [stderr]    Compiling pin-project v0.4.17
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tokio-tls v0.3.1
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]    Compiling h2 v0.2.5
[INFO] [stderr]    Compiling piper v0.1.3
[INFO] [stderr]    Compiling futures-executor v0.3.5
[INFO] [stderr]    Compiling futures v0.3.5
[INFO] [stderr]    Compiling smol v0.1.11
[INFO] [stderr]    Compiling async-std v1.6.0
[INFO] [stderr]    Compiling xml5ever v0.16.1
[INFO] [stderr]    Compiling hyper v0.13.6
[INFO] [stderr]    Compiling markup5ever_arcdom v0.1.1
[INFO] [stderr]    Compiling crabquery v0.1.6
[INFO] [stderr]    Compiling hyper-tls v0.4.1
[INFO] [stderr]    Compiling reqwest v0.10.6
[INFO] [stderr]    Compiling crabler v0.1.11 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/lib.rs:175:20
[INFO] [stderr]     |
[INFO] [stderr] 175 |             if let Some(output) = output {
[INFO] [stderr]     |                    ^^^^^^^^^^^^   ------ this expression has type `std::result::Result<WorkOutput, async_std::sync::channel::RecvError>`
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    expected enum `std::result::Result`, found enum `std::option::Option`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected enum `std::result::Result<WorkOutput, async_std::sync::channel::RecvError>`
[INFO] [stderr]                found enum `std::option::Option<_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/lib.rs:282:20
[INFO] [stderr]     |
[INFO] [stderr] 282 |             if let Some(workload) = workload {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^   -------- this expression has type `std::result::Result<Workload, async_std::sync::channel::RecvError>`
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    expected enum `std::result::Result`, found enum `std::option::Option`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected enum `std::result::Result<Workload, async_std::sync::channel::RecvError>`
[INFO] [stderr]                found enum `std::option::Option<_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `crabler`.
[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" "40dd17233506ef408deaf670b934b3478f767e461953863e26eadfa134b31a3d"`
[INFO] running `"docker" "rm" "-f" "40dd17233506ef408deaf670b934b3478f767e461953863e26eadfa134b31a3d"`
[INFO] [stdout] 40dd17233506ef408deaf670b934b3478f767e461953863e26eadfa134b31a3d