[INFO] crate panda 0.2.1 is already in cache
[INFO] checking panda-0.2.1 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate panda 0.2.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate panda 0.2.1 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate panda 0.2.1
[INFO] finished tweaking crates.io crate panda 0.2.1
[INFO] tweaked toml for crates.io crate panda 0.2.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate panda 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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=forbid" "-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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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] 94921a461010fabb12bc5b5a585b9722965943638b3ad2def5802e1c7d561397
[INFO] running `"docker" "start" "-a" "94921a461010fabb12bc5b5a585b9722965943638b3ad2def5802e1c7d561397"`
[INFO] [stderr]    Compiling curl v0.4.26
[INFO] [stderr]    Compiling isahc v0.9.0
[INFO] [stderr]    Compiling curl-sys v0.4.28+curl-7.69.0
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]     Checking libnghttp2-sys v0.1.3
[INFO] [stderr]     Checking socket2 v0.3.11
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking libz-sys v1.0.25
[INFO] [stderr]     Checking webpki-roots v0.17.0
[INFO] [stderr]     Checking rustls v0.16.0
[INFO] [stderr]     Checking tungstenite v0.10.1
[INFO] [stderr]     Checking async-std v1.5.0
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling serde_repr v0.1.5
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]     Checking pin-project v0.4.8
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking sluice v0.5.2
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking async-tls v0.6.0
[INFO] [stderr]     Checking async-tungstenite v0.4.0
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking panda v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: could not find `main` in `async_std`
[INFO] [stderr]  --> examples/ping_pong.rs:1:14
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[async_std::main]
[INFO] [stderr]   |              ^^^^ could not find `main` in `async_std`
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: `main` has invalid return type `impl std::future::Future`
[INFO] [stderr]  --> examples/ping_pong.rs:2:20
[INFO] [stderr]   |
[INFO] [stderr] 2 | async fn main() -> Result<(), Box<dyn std::error::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: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0277, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `panda`.
[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[E0433]: failed to resolve: could not find `main` in `async_std`
[INFO] [stderr]  --> examples/embed.rs:7:14
[INFO] [stderr]   |
[INFO] [stderr] 7 | #[async_std::main]
[INFO] [stderr]   |              ^^^^ could not find `main` in `async_std`
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: `main` has invalid return type `impl std::future::Future`
[INFO] [stderr]  --> examples/embed.rs:8:20
[INFO] [stderr]   |
[INFO] [stderr] 8 | 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: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0277, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `panda`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "94921a461010fabb12bc5b5a585b9722965943638b3ad2def5802e1c7d561397"`
[INFO] running `"docker" "rm" "-f" "94921a461010fabb12bc5b5a585b9722965943638b3ad2def5802e1c7d561397"`
[INFO] [stdout] 94921a461010fabb12bc5b5a585b9722965943638b3ad2def5802e1c7d561397
