[INFO] fetching crate ein-ffi 0.6.0...
[INFO] testing ein-ffi-0.6.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate ein-ffi 0.6.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate ein-ffi 0.6.0
[INFO] finished tweaking crates.io crate ein-ffi 0.6.0
[INFO] tweaked toml for crates.io crate ein-ffi 0.6.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ein-ffi 0.6.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ba42f5e7cf5a6d967195039ba1552e1eac947e2fbd4372d3e5f7e73a53694db
[INFO] running `Command { std: "docker" "start" "-a" "9ba42f5e7cf5a6d967195039ba1552e1eac947e2fbd4372d3e5f7e73a53694db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ba42f5e7cf5a6d967195039ba1552e1eac947e2fbd4372d3e5f7e73a53694db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ba42f5e7cf5a6d967195039ba1552e1eac947e2fbd4372d3e5f7e73a53694db", kill_on_drop: false }`
[INFO] [stdout] 9ba42f5e7cf5a6d967195039ba1552e1eac947e2fbd4372d3e5f7e73a53694db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da807cafd5bc9c4bc789ed9a834729c0835e8ef4b53f30c4b157feed37a2f3c2
[INFO] running `Command { std: "docker" "start" "-a" "da807cafd5bc9c4bc789ed9a834729c0835e8ef4b53f30c4b157feed37a2f3c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling ein-ffi v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: calling this function with a null pointer is undefined behavior, even if the result of the function is unused
[INFO] [stdout]   --> src/arc/arc_buffer.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 std::slice::from_raw_parts(null(), 0)
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^------^^^^
[INFO] [stdout]    |                                            |
[INFO] [stdout]    |                                            null pointer originates from here
[INFO] [stdout]    |
[INFO] [stdout]    = help: for more information, visit <https://doc.rust-lang.org/std/ptr/index.html> and <https://doc.rust-lang.org/reference/behavior-considered-undefined.html>
[INFO] [stdout]    = note: `#[deny(invalid_null_arguments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: calling this function with a null pointer is undefined behavior, even if the result of the function is unused
[INFO] [stdout]   --> src/arc/arc_buffer.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 std::slice::from_raw_parts_mut(null_mut(), 0)
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^----------^^^^
[INFO] [stdout]    |                                                |
[INFO] [stdout]    |                                                null pointer originates from here
[INFO] [stdout]    |
[INFO] [stdout]    = help: for more information, visit <https://doc.rust-lang.org/std/ptr/index.html> and <https://doc.rust-lang.org/reference/behavior-considered-undefined.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ein-ffi` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "da807cafd5bc9c4bc789ed9a834729c0835e8ef4b53f30c4b157feed37a2f3c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da807cafd5bc9c4bc789ed9a834729c0835e8ef4b53f30c4b157feed37a2f3c2", kill_on_drop: false }`
[INFO] [stdout] da807cafd5bc9c4bc789ed9a834729c0835e8ef4b53f30c4b157feed37a2f3c2
