[INFO] crate want 0.3.0 is already in cache
[INFO] checking want-0.3.0 against beta-2019-10-27 for pr-65897
[INFO] extracting crate want 0.3.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate want 0.3.0 on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate want 0.3.0
[INFO] finished tweaking crates.io crate want 0.3.0
[INFO] tweaked toml for crates.io crate want 0.3.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=allow" "-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-2019-10-27" "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] 2873d95065f19b5ff3c1c74e41fcbf8376be07eb2090c89c9afb3a6d192c9421
[INFO] running `"docker" "start" "-a" "2873d95065f19b5ff3c1c74e41fcbf8376be07eb2090c89c9afb3a6d192c9421"`
[INFO] [stderr]     Checking want v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> benches/throughput.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0061]: this function takes 1 parameter but 0 parameters were supplied
[INFO] [stderr]   --> benches/throughput.rs:12:20
[INFO] [stderr]    |
[INFO] [stderr] 12 |         assert!(gv.poll_want().unwrap().is_ready());
[INFO] [stderr]    |                    ^^^^^^^^^ expected 1 parameter
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `unwrap` found for type `std::task::Poll<std::result::Result<(), want::Closed>>` in the current scope
[INFO] [stderr]   --> benches/throughput.rs:12:32
[INFO] [stderr]    |
[INFO] [stderr] 12 |         assert!(gv.poll_want().unwrap().is_ready());
[INFO] [stderr]    |                                ^^^^^^ method not found in `std::task::Poll<std::result::Result<(), want::Closed>>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0061, E0554, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0061`.
[INFO] [stderr] error: could not compile `want`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2873d95065f19b5ff3c1c74e41fcbf8376be07eb2090c89c9afb3a6d192c9421"`
[INFO] running `"docker" "rm" "-f" "2873d95065f19b5ff3c1c74e41fcbf8376be07eb2090c89c9afb3a6d192c9421"`
[INFO] [stdout] 2873d95065f19b5ff3c1c74e41fcbf8376be07eb2090c89c9afb3a6d192c9421