[INFO] fetching crate multican 0.5.0...
[INFO] testing multican-0.5.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate multican 0.5.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate multican 0.5.0 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 multican 0.5.0
[INFO] finished tweaking crates.io crate multican 0.5.0
[INFO] tweaked toml for crates.io crate multican 0.5.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate multican 0.5.0 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] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 2d9d04b81271678dec4c3ee6415b7f8eeded63aad37a293d0d511e021bcc0754
[INFO] running `"docker" "start" "-a" "2d9d04b81271678dec4c3ee6415b7f8eeded63aad37a293d0d511e021bcc0754"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.64
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling itertools v0.4.19
[INFO] [stderr]    Compiling try_from v0.2.2
[INFO] [stderr]    Compiling hex v0.2.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling socket2 v0.3.11
[INFO] [stderr]    Compiling socketcan v1.7.0
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling multican v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.30s
[INFO] running `"docker" "inspect" "2d9d04b81271678dec4c3ee6415b7f8eeded63aad37a293d0d511e021bcc0754"`
[INFO] running `"docker" "rm" "-f" "2d9d04b81271678dec4c3ee6415b7f8eeded63aad37a293d0d511e021bcc0754"`
[INFO] [stdout] 2d9d04b81271678dec4c3ee6415b7f8eeded63aad37a293d0d511e021bcc0754
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 6e37fcbbcdac6b6ac85b98e82381ef9586d486f9ae37bfc898ade3c8d5ab17c1
[INFO] running `"docker" "start" "-a" "6e37fcbbcdac6b6ac85b98e82381ef9586d486f9ae37bfc898ade3c8d5ab17c1"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling multican v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `multican::async_can_udp`
[INFO] [stderr]  --> examples/async_log.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | use multican::async_can_udp::AsyncUdpNetwork;
[INFO] [stderr]   |               ^^^^^^^^^^^^^ could not find `async_can_udp` in `multican`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stderr]  --> examples/async_log.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use tokio::stream::StreamExt;
[INFO] [stderr]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stderr]  --> examples/async_log.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use tokio::sync::mpsc;
[INFO] [stderr]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `multican::async_socketcan`
[INFO] [stderr]  --> examples/async_log.rs:6:15
[INFO] [stderr]   |
[INFO] [stderr] 6 | use multican::async_socketcan::AsyncSocketCanNetwork;
[INFO] [stderr]   |               ^^^^^^^^^^^^^^^ could not find `async_socketcan` in `multican`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stderr]   --> examples/async_log.rs:11:3
[INFO] [stderr]    |
[INFO] [stderr] 11 | #[tokio::main]
[INFO] [stderr]    |   ^^^^^ use of undeclared type or module `tokio`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `from_config_async` in crate `multican`
[INFO] [stderr]   --> examples/async_log.rs:86:33
[INFO] [stderr]    |
[INFO] [stderr] 86 |     let mut network = multican::from_config_async(cfg);
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^ not found in `multican`
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: `main` has invalid return type `impl std::future::Future`
[INFO] [stderr]   --> examples/async_log.rs:12:20
[INFO] [stderr]    |
[INFO] [stderr] 12 | async fn main() -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ `main` can only return types that implement `std::process::Termination`
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using `()`, or a `Result`
[INFO] [stderr] 
[INFO] [stderr] error[E0752]: `main` function is not allowed to be `async`
[INFO] [stderr]   --> examples/async_log.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | async fn main() -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `main` function is not allowed to be `async`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 8 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0277, E0425, E0432, E0433, E0752.
[INFO] [stderr] For more information about an error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `multican`.
[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" "6e37fcbbcdac6b6ac85b98e82381ef9586d486f9ae37bfc898ade3c8d5ab17c1"`
[INFO] running `"docker" "rm" "-f" "6e37fcbbcdac6b6ac85b98e82381ef9586d486f9ae37bfc898ade3c8d5ab17c1"`
[INFO] [stdout] 6e37fcbbcdac6b6ac85b98e82381ef9586d486f9ae37bfc898ade3c8d5ab17c1