[INFO] fetching crate cstring 0.1.1...
[INFO] testing cstring-0.1.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate cstring 0.1.1 into /workspace/builds/worker-100/source
[INFO] validating manifest of crates.io crate cstring 0.1.1 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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-100/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--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-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35b020b1443bd1c6c9c3d7256a60bcc6d58ccedde0f9c262c5472a4c7e73f47e
[INFO] running `Command { std: "docker" "start" "-a" "35b020b1443bd1c6c9c3d7256a60bcc6d58ccedde0f9c262c5472a4c7e73f47e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35b020b1443bd1c6c9c3d7256a60bcc6d58ccedde0f9c262c5472a4c7e73f47e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35b020b1443bd1c6c9c3d7256a60bcc6d58ccedde0f9c262c5472a4c7e73f47e", kill_on_drop: false }`
[INFO] [stdout] 35b020b1443bd1c6c9c3d7256a60bcc6d58ccedde0f9c262c5472a4c7e73f47e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c5a6529f6e0877f3f835d5e8c3806a99197ea7b28cebf833f5557ca97a134231
[INFO] running `Command { std: "docker" "start" "-a" "c5a6529f6e0877f3f835d5e8c3806a99197ea7b28cebf833f5557ca97a134231", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling cty v0.2.2
[INFO] [stderr]    Compiling cstring v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `Command { std: "docker" "inspect" "c5a6529f6e0877f3f835d5e8c3806a99197ea7b28cebf833f5557ca97a134231", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5a6529f6e0877f3f835d5e8c3806a99197ea7b28cebf833f5557ca97a134231", kill_on_drop: false }`
[INFO] [stdout] c5a6529f6e0877f3f835d5e8c3806a99197ea7b28cebf833f5557ca97a134231
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 33d75e0c20805fbacfa314fe45ddaaf70d334d937f15ad9aae662125d53fc20b
[INFO] running `Command { std: "docker" "start" "-a" "33d75e0c20805fbacfa314fe45ddaaf70d334d937f15ad9aae662125d53fc20b", 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" "33d75e0c20805fbacfa314fe45ddaaf70d334d937f15ad9aae662125d53fc20b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33d75e0c20805fbacfa314fe45ddaaf70d334d937f15ad9aae662125d53fc20b", kill_on_drop: false }`
[INFO] [stdout] 33d75e0c20805fbacfa314fe45ddaaf70d334d937f15ad9aae662125d53fc20b