[INFO] fetching crate cstring 0.1.1...
[INFO] testing cstring-0.1.1 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate cstring 0.1.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate cstring 0.1.1 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cstring 0.1.1
[INFO] finished tweaking crates.io crate cstring 0.1.1
[INFO] tweaked toml for crates.io crate cstring 0.1.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1aae997408b0c10aa0e7059fe6232a7100d02f9764f1c54b69c8bb2d35f82f8f
[INFO] running `Command { std: "docker" "start" "-a" "1aae997408b0c10aa0e7059fe6232a7100d02f9764f1c54b69c8bb2d35f82f8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1aae997408b0c10aa0e7059fe6232a7100d02f9764f1c54b69c8bb2d35f82f8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1aae997408b0c10aa0e7059fe6232a7100d02f9764f1c54b69c8bb2d35f82f8f", kill_on_drop: false }`
[INFO] [stdout] 1aae997408b0c10aa0e7059fe6232a7100d02f9764f1c54b69c8bb2d35f82f8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27ffdcfcdd1fd616a1a2ba43b3753486a98e94f4904304adf50c19a9cbb595f8
[INFO] running `Command { std: "docker" "start" "-a" "27ffdcfcdd1fd616a1a2ba43b3753486a98e94f4904304adf50c19a9cbb595f8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cty v0.2.1
[INFO] [stderr]    Compiling cstring v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "27ffdcfcdd1fd616a1a2ba43b3753486a98e94f4904304adf50c19a9cbb595f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27ffdcfcdd1fd616a1a2ba43b3753486a98e94f4904304adf50c19a9cbb595f8", kill_on_drop: false }`
[INFO] [stdout] 27ffdcfcdd1fd616a1a2ba43b3753486a98e94f4904304adf50c19a9cbb595f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 652820e0b00faf8cdbe252d77a5647b486f7f5f8b1f343dbeba6823997bf4c10
[INFO] running `Command { std: "docker" "start" "-a" "652820e0b00faf8cdbe252d77a5647b486f7f5f8b1f343dbeba6823997bf4c10", kill_on_drop: false }`
[INFO] [stderr]    Compiling cstring v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0468]: an `extern crate` loading macros must be at the crate root
[INFO] [stdout]   --> src/cstr_core.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate std;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[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 E0468`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cstring` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "652820e0b00faf8cdbe252d77a5647b486f7f5f8b1f343dbeba6823997bf4c10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "652820e0b00faf8cdbe252d77a5647b486f7f5f8b1f343dbeba6823997bf4c10", kill_on_drop: false }`
[INFO] [stdout] 652820e0b00faf8cdbe252d77a5647b486f7f5f8b1f343dbeba6823997bf4c10
