[INFO] fetching crate cr 0.1.1...
[INFO] checking cr-0.1.1 against beta for pr-78714
[INFO] extracting crate cr 0.1.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate cr 0.1.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cr 0.1.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate cr 0.1.1
[INFO] tweaked toml for crates.io crate cr 0.1.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 95f63aca57865d0d99c472a8e93741011d33e643b3f188771d575bfabeca5652
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "95f63aca57865d0d99c472a8e93741011d33e643b3f188771d575bfabeca5652", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95f63aca57865d0d99c472a8e93741011d33e643b3f188771d575bfabeca5652", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95f63aca57865d0d99c472a8e93741011d33e643b3f188771d575bfabeca5652", kill_on_drop: false }`
[INFO] [stdout] 95f63aca57865d0d99c472a8e93741011d33e643b3f188771d575bfabeca5652
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6b6cc9c1c5f03d79b8ffd442fdf82529ffad90d83f9b961594550ba45a19ab5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b6b6cc9c1c5f03d79b8ffd442fdf82529ffad90d83f9b961594550ba45a19ab5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling bindgen v0.49.4
[INFO] [stderr]    Compiling addr2line v0.14.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling backtrace v0.3.54
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]    Compiling cr-sys v0.1.1
[INFO] [stderr]     Checking cr v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `basic_state`
[INFO] [stdout]  --> examples/basic_state.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | / #[derive(Debug)]
[INFO] [stdout] 2 | | pub struct BasicState {
[INFO] [stdout] 3 | |     pub counter: i32,
[INFO] [stdout] 4 | | }
[INFO] [stdout] 5 | |
[INFO] [stdout] 6 | | pub type BasicPlugin = cr::Plugin<BasicState>;
[INFO] [stdout]   | |______________________________________________^ consider adding a `main` function to `examples/basic_state.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cr`
[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 `Command { std: "docker" "inspect" "b6b6cc9c1c5f03d79b8ffd442fdf82529ffad90d83f9b961594550ba45a19ab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6b6cc9c1c5f03d79b8ffd442fdf82529ffad90d83f9b961594550ba45a19ab5", kill_on_drop: false }`
[INFO] [stdout] b6b6cc9c1c5f03d79b8ffd442fdf82529ffad90d83f9b961594550ba45a19ab5