[INFO] crate remote-canvas 1.0.4 is already in cache
[INFO] testing remote-canvas-1.0.4 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate remote-canvas 1.0.4 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate remote-canvas 1.0.4 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 remote-canvas 1.0.4
[INFO] finished tweaking crates.io crate remote-canvas 1.0.4
[INFO] tweaked toml for crates.io crate remote-canvas 1.0.4 written to /workspace/builds/worker-6/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] 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=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] e6dd266fa11c7cd10781901bba4253deaca09201985c50dd2114ae5c2d48f77f
[INFO] running `"docker" "start" "-a" "e6dd266fa11c7cd10781901bba4253deaca09201985c50dd2114ae5c2d48f77f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]    Compiling utf-8 v0.7.5
[INFO] [stderr]    Compiling async-task v3.0.0
[INFO] [stderr]    Compiling scoped-tls-hkt v0.1.2
[INFO] [stderr]    Compiling input_buffer v0.3.1
[INFO] [stderr]    Compiling socket2 v0.3.12
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling chrono v0.4.11
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling uuid v0.5.1
[INFO] [stderr]    Compiling sha-1 v0.8.2
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling actix-threadpool v0.3.2
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]    Compiling kv-log-macro v1.0.6
[INFO] [stderr]    Compiling actix-router v0.2.4
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling tungstenite v0.10.1
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling tokio v0.2.21
[INFO] [stderr]    Compiling futures-executor v0.3.5
[INFO] [stderr]    Compiling actix-service v1.0.5
[INFO] [stderr]    Compiling piper v0.1.3
[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 tokio-util v0.2.0
[INFO] [stderr]    Compiling actix-rt v1.1.1
[INFO] [stderr]    Compiling trust-dns-proto v0.18.0-alpha.2
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tokio-tungstenite v0.10.1
[INFO] [stderr]    Compiling h2 v0.2.5
[INFO] [stderr]    Compiling actix-codec v0.2.0
[INFO] [stderr]    Compiling actix-utils v1.0.6
[INFO] [stderr]    Compiling actix-server v1.0.3
[INFO] [stderr]    Compiling actix-tls v1.0.0
[INFO] [stderr]    Compiling trust-dns-resolver v0.18.0-alpha.2
[INFO] [stderr]    Compiling actix-testing v1.0.1
[INFO] [stderr]    Compiling actix-connect v1.0.2
[INFO] [stderr]    Compiling actix-http v1.0.1
[INFO] [stderr]    Compiling awc v1.0.1
[INFO] [stderr]    Compiling actix-web v2.0.0
[INFO] [stderr]    Compiling remote-canvas v1.0.4 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0599]: no method named `ok_or_else` found for enum `std::result::Result<websocket::WsMessageResponse, async_std::sync::channel::RecvError>` in the current scope
[INFO] [stderr]    --> src/canvas.rs:277:14
[INFO] [stderr]     |
[INFO] [stderr] 277 |             .ok_or_else(|| canvas_error!("failed to receive response from client") as Error)
[INFO] [stderr]     |              ^^^^^^^^^^ help: there is an associated function with a similar name: `map_or_else`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `remote-canvas`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e6dd266fa11c7cd10781901bba4253deaca09201985c50dd2114ae5c2d48f77f"`
[INFO] running `"docker" "rm" "-f" "e6dd266fa11c7cd10781901bba4253deaca09201985c50dd2114ae5c2d48f77f"`
[INFO] [stdout] e6dd266fa11c7cd10781901bba4253deaca09201985c50dd2114ae5c2d48f77f