[INFO] fetching crate api 0.2.0...
[INFO] testing api-0.2.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate api 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate api 0.2.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate api 0.2.0
[INFO] finished tweaking crates.io crate api 0.2.0
[INFO] tweaked toml for crates.io crate api 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ca3b26e32cf3c622f24e6b8d027640f5bb21896f74ea0701832f771a3c134fbc
[INFO] running `Command { std: "docker" "start" "-a" "ca3b26e32cf3c622f24e6b8d027640f5bb21896f74ea0701832f771a3c134fbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca3b26e32cf3c622f24e6b8d027640f5bb21896f74ea0701832f771a3c134fbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca3b26e32cf3c622f24e6b8d027640f5bb21896f74ea0701832f771a3c134fbc", kill_on_drop: false }`
[INFO] [stdout] ca3b26e32cf3c622f24e6b8d027640f5bb21896f74ea0701832f771a3c134fbc
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b04e46240c389837f4c3410af1f86ad38c940fb47e1e418cebe45a692e615b64
[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" "b04e46240c389837f4c3410af1f86ad38c940fb47e1e418cebe45a692e615b64", kill_on_drop: false }`
[INFO] [stderr]    Compiling api v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "b04e46240c389837f4c3410af1f86ad38c940fb47e1e418cebe45a692e615b64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b04e46240c389837f4c3410af1f86ad38c940fb47e1e418cebe45a692e615b64", kill_on_drop: false }`
[INFO] [stdout] b04e46240c389837f4c3410af1f86ad38c940fb47e1e418cebe45a692e615b64
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 968ed8160e23a821f6dbcf482db6e77be9e4a2c889876ecb1e62815bfcaeb9ac
[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" "968ed8160e23a821f6dbcf482db6e77be9e4a2c889876ecb1e62815bfcaeb9ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling api v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `httpbin`
[INFO] [stdout]   --> examples/httpbin.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / #![cfg(feature = "use-hyper")]
[INFO] [stdout] 2  | | extern crate api;
[INFO] [stdout] 3  | | extern crate hyper;
[INFO] [stdout] 4  | | extern crate serde;
[INFO] [stdout] ...  |
[INFO] [stdout] 61 | |     println!("{:?}", resp);
[INFO] [stdout] 62 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `examples/httpbin.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `api`
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[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" "968ed8160e23a821f6dbcf482db6e77be9e4a2c889876ecb1e62815bfcaeb9ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "968ed8160e23a821f6dbcf482db6e77be9e4a2c889876ecb1e62815bfcaeb9ac", kill_on_drop: false }`
[INFO] [stdout] 968ed8160e23a821f6dbcf482db6e77be9e4a2c889876ecb1e62815bfcaeb9ac