[INFO] cloning repository https://github.com/open-rust/macro-log
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/open-rust/macro-log" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopen-rust%2Fmacro-log", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopen-rust%2Fmacro-log'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 84aef338c2d6a27382a75706dae7b5125852fca2
[INFO] testing open-rust/macro-log against 1.99.0-beta.1 for beta-1.99-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopen-rust%2Fmacro-log" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/open-rust/macro-log
[INFO] finished tweaking git repo https://github.com/open-rust/macro-log
[INFO] tweaked toml for git repo https://github.com/open-rust/macro-log written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/open-rust/macro-log on toolchain 1.99.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/open-rust/macro-log already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 15b63584d06a144198767a9f9478e972712e1a60d1eec54f33071a9aec75059b
[INFO] running `Command { std: "docker" "start" "15b63584d06a144198767a9f9478e972712e1a60d1eec54f33071a9aec75059b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15b63584d06a144198767a9f9478e972712e1a60d1eec54f33071a9aec75059b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "15b63584d06a144198767a9f9478e972712e1a60d1eec54f33071a9aec75059b" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15b63584d06a144198767a9f9478e972712e1a60d1eec54f33071a9aec75059b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "15b63584d06a144198767a9f9478e972712e1a60d1eec54f33071a9aec75059b" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling iana-time-zone v0.1.57
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling time v0.1.45
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]    Compiling syn v2.0.28
[INFO] [stderr]    Compiling chrono v0.4.26
[INFO] [stderr]    Compiling macro-log-macros v0.3.0 (/opt/rustwide/workdir/macro-log-macros)
[INFO] [stderr]    Compiling macro-log v0.3.0 (/opt/rustwide/workdir/macro-log)
[INFO] [stderr]    Compiling app v0.3.0 (/opt/rustwide/workdir/app)
[INFO] [stdout] warning: `extern` fn uses type `(i8, i8)`, which is not FFI-safe
[INFO] [stdout]   --> app/src/main.rs:27:54
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub extern "C" fn test<'a, T>(value: &'a T, another: (i8, i8), arg: Arg, ) -> &'a T
[INFO] [stdout]    |                                                      ^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a struct instead
[INFO] [stdout]    = note: tuples have unspecified layout
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `Arg`, which is not FFI-safe
[INFO] [stdout]   --> app/src/main.rs:27:69
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub extern "C" fn test<'a, T>(value: &'a T, another: (i8, i8), arg: Arg, ) -> &'a T
[INFO] [stdout]    |                                                                     ^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]    = note: this struct has unspecified layout
[INFO] [stdout] note: the type is defined here
[INFO] [stdout]   --> app/src/main.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Arg {
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.10s
[INFO] running `Command { std: "docker" "inspect" "15b63584d06a144198767a9f9478e972712e1a60d1eec54f33071a9aec75059b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "15b63584d06a144198767a9f9478e972712e1a60d1eec54f33071a9aec75059b" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling macro-log-macros v0.3.0 (/opt/rustwide/workdir/macro-log-macros)
[INFO] [stderr]    Compiling macro-log v0.3.0 (/opt/rustwide/workdir/macro-log)
[INFO] [stderr]    Compiling app v0.3.0 (/opt/rustwide/workdir/app)
[INFO] [stdout] error[E0658]: use of an internal attribute
[INFO] [stdout]   --> app/src/main.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     #[debug]
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the `rustc_test_entrypoint_marker` attribute is an internal implementation detail that will never be stable
[INFO] [stdout]    = note: this error originates in the attribute macro `debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `app` (bin "app" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] visit dir: "app/src/"
[INFO] [stdout] file => main.rs
[INFO] [stdout] wrokspace: /opt/rustwide/workdir/app/src
[INFO] running `Command { std: "docker" "inspect" "15b63584d06a144198767a9f9478e972712e1a60d1eec54f33071a9aec75059b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15b63584d06a144198767a9f9478e972712e1a60d1eec54f33071a9aec75059b", kill_on_drop: false }`
[INFO] [stdout] 15b63584d06a144198767a9f9478e972712e1a60d1eec54f33071a9aec75059b