[INFO] fetching crate ein-ffi 0.6.0... [INFO] checking ein-ffi-0.6.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170 [INFO] extracting crate ein-ffi 0.6.0 into /workspace/builds/worker-0-tc2/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-0-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate ein-ffi 0.6.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f1b20075e5226f09a2d49f6dabf2e6ddb726dd48c0483639311e38e16529ee51 [INFO] running `Command { std: "docker" "start" "-a" "f1b20075e5226f09a2d49f6dabf2e6ddb726dd48c0483639311e38e16529ee51", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f1b20075e5226f09a2d49f6dabf2e6ddb726dd48c0483639311e38e16529ee51", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f1b20075e5226f09a2d49f6dabf2e6ddb726dd48c0483639311e38e16529ee51", kill_on_drop: false }` [INFO] [stdout] f1b20075e5226f09a2d49f6dabf2e6ddb726dd48c0483639311e38e16529ee51 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8f88e7fc1230fb71b06ec05ab86e29fa1c5955f573c6034536665d0dbc9804d3 [INFO] running `Command { std: "docker" "start" "-a" "8f88e7fc1230fb71b06ec05ab86e29fa1c5955f573c6034536665d0dbc9804d3", kill_on_drop: false }` [INFO] [stderr] Checking 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 and [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 and [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `ein-ffi` (lib) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [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 and [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 and [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `from` that must be used [INFO] [stdout] --> src/arc/arc_buffer.rs:114:9 [INFO] [stdout] | [INFO] [stdout] 114 | ArcBuffer::from(vec![0u8; 42].as_slice()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 114 | let _ = ArcBuffer::from(vec![0u8; 42].as_slice()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `from` that must be used [INFO] [stdout] --> src/arc/arc_buffer.rs:119:9 [INFO] [stdout] | [INFO] [stdout] 119 | ArcBuffer::from("hello".as_bytes()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 119 | let _ = ArcBuffer::from("hello".as_bytes()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `ein-ffi` (lib test) due to 2 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "8f88e7fc1230fb71b06ec05ab86e29fa1c5955f573c6034536665d0dbc9804d3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8f88e7fc1230fb71b06ec05ab86e29fa1c5955f573c6034536665d0dbc9804d3", kill_on_drop: false }` [INFO] [stdout] 8f88e7fc1230fb71b06ec05ab86e29fa1c5955f573c6034536665d0dbc9804d3