[INFO] fetching crate rarathon 0.0.1...
[INFO] testing rarathon-0.0.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate rarathon 0.0.1 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate rarathon 0.0.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rarathon 0.0.1
[INFO] finished tweaking crates.io crate rarathon 0.0.1
[INFO] tweaked toml for crates.io crate rarathon 0.0.1 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16e42e4b7ca3f4a8ffbf0c9ce724096205ceca0e5e175ed0a6a8835482230f02
[INFO] running `Command { std: "docker" "start" "-a" "16e42e4b7ca3f4a8ffbf0c9ce724096205ceca0e5e175ed0a6a8835482230f02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16e42e4b7ca3f4a8ffbf0c9ce724096205ceca0e5e175ed0a6a8835482230f02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16e42e4b7ca3f4a8ffbf0c9ce724096205ceca0e5e175ed0a6a8835482230f02", kill_on_drop: false }`
[INFO] [stdout] 16e42e4b7ca3f4a8ffbf0c9ce724096205ceca0e5e175ed0a6a8835482230f02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d06d9f96c38ce3ac89f9a017415a77db8e87209662516e7b164238cadd91bf55
[INFO] running `Command { std: "docker" "start" "-a" "d06d9f96c38ce3ac89f9a017415a77db8e87209662516e7b164238cadd91bf55", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling hyper v0.14.12
[INFO] [stderr]    Compiling rarathon v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected identifier, found `"rustc-serialize"`
[INFO] [stdout]  --> src/lib.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern crate "rustc-serialize" as rustc_serialize;
[INFO] [stdout]   |              ^^^^^^^^^^^^^^^^^ expected identifier
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rarathon` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d06d9f96c38ce3ac89f9a017415a77db8e87209662516e7b164238cadd91bf55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d06d9f96c38ce3ac89f9a017415a77db8e87209662516e7b164238cadd91bf55", kill_on_drop: false }`
[INFO] [stdout] d06d9f96c38ce3ac89f9a017415a77db8e87209662516e7b164238cadd91bf55