[INFO] fetching crate ein-ffi 0.6.0...
[INFO] testing ein-ffi-0.6.0 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate ein-ffi 0.6.0 into /workspace/builds/worker-1-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-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ein-ffi 0.6.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "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" "+1.99.0-beta.8" "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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 30ab8ec81fd7e54741edb0483d584bba2309e9a10c98c3dd2f8299a5f571948c
[INFO] running `Command { std: "docker" "start" "30ab8ec81fd7e54741edb0483d584bba2309e9a10c98c3dd2f8299a5f571948c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30ab8ec81fd7e54741edb0483d584bba2309e9a10c98c3dd2f8299a5f571948c", 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" "30ab8ec81fd7e54741edb0483d584bba2309e9a10c98c3dd2f8299a5f571948c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30ab8ec81fd7e54741edb0483d584bba2309e9a10c98c3dd2f8299a5f571948c", 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" "30ab8ec81fd7e54741edb0483d584bba2309e9a10c98c3dd2f8299a5f571948c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling ein-ffi v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 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: `#[warn(invalid_null_arguments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 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]     Finished `release` profile [optimized] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "30ab8ec81fd7e54741edb0483d584bba2309e9a10c98c3dd2f8299a5f571948c", 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" "30ab8ec81fd7e54741edb0483d584bba2309e9a10c98c3dd2f8299a5f571948c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling ein-ffi v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 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: `#[warn(invalid_null_arguments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 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] [stdout] warning: 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: `#[warn(invalid_null_arguments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 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] [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)]` (part of `#[warn(unused)]`) 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]     Finished `release` profile [optimized] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "30ab8ec81fd7e54741edb0483d584bba2309e9a10c98c3dd2f8299a5f571948c", 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" "30ab8ec81fd7e54741edb0483d584bba2309e9a10c98c3dd2f8299a5f571948c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: calling this function with a null pointer is undefined behavior, even if the result of the function is unused
[INFO] [stderr]   --> src/arc/arc_buffer.rs:43:17
[INFO] [stderr]    |
[INFO] [stderr] 43 |                 std::slice::from_raw_parts(null(), 0)
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^------^^^^
[INFO] [stderr]    |                                            |
[INFO] [stderr]    |                                            null pointer originates from here
[INFO] [stderr]    |
[INFO] [stderr]    = 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] [stderr]    = note: `#[warn(invalid_null_arguments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: calling this function with a null pointer is undefined behavior, even if the result of the function is unused
[INFO] [stderr]   --> src/arc/arc_buffer.rs:55:17
[INFO] [stderr]    |
[INFO] [stderr] 55 |                 std::slice::from_raw_parts_mut(null_mut(), 0)
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^----------^^^^
[INFO] [stderr]    |                                                |
[INFO] [stderr]    |                                                null pointer originates from here
[INFO] [stderr]    |
[INFO] [stderr]    = 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] [stderr] 
[INFO] [stderr] warning: `ein-ffi` (lib) generated 2 warnings
[INFO] [stderr] warning: unused return value of `from` that must be used
[INFO] [stderr]    --> src/arc/arc_buffer.rs:114:9
[INFO] [stderr]     |
[INFO] [stderr] 114 |         ArcBuffer::from(vec![0u8; 42].as_slice());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 114 |         let _ = ArcBuffer::from(vec![0u8; 42].as_slice());
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `from` that must be used
[INFO] [stderr]    --> src/arc/arc_buffer.rs:119:9
[INFO] [stderr]     |
[INFO] [stderr] 119 |         ArcBuffer::from("hello".as_bytes());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 119 |         let _ = ArcBuffer::from("hello".as_bytes());
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `ein-ffi` (lib test) generated 4 warnings (2 duplicates)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/release/deps/ein_ffi-de5b21e6d431628f)
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test arc::arc_block::tests::clone ... ok
[INFO] [stdout] test arc::arc_block::tests::drop_twice ... ok
[INFO] [stdout] test arc::arc_buffer::tests::convert_from_string ... ok
[INFO] [stdout] test arc::arc_buffer::tests::convert_from_vec ... ok
[INFO] [stdout] test arc::arc_block::tests::drop ... ok
[INFO] [stdout] test arc::arc_block::tests::create ... ok
[INFO] [stdout] test arc::tests::clone ... ok
[INFO] [stdout] test arc::tests::zero_sized::create ... ok
[INFO] [stdout] test arc::arc_buffer::tests::create_buffer ... ok
[INFO] [stdout] test string::tests::slice_with_ascii ... ok
[INFO] [stdout] test arc::tests::zero_sized::load_payload ... ok
[INFO] [stdout] test string::tests::slice_with_emojis ... ok
[INFO] [stdout] test arc::arc_buffer::tests::create_zero_sized_buffer ... ok
[INFO] [stdout] test string::tests::join ... ok
[INFO] [stdout] test string::tests::slice_with_negative_index ... ok
[INFO] [stdout] test arc::arc_block::tests::create_null ... ok
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/release/deps/ein_ffi-de5b21e6d431628f` (signal: 4, SIGILL: illegal instruction)
[INFO] running `Command { std: "docker" "inspect" "30ab8ec81fd7e54741edb0483d584bba2309e9a10c98c3dd2f8299a5f571948c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30ab8ec81fd7e54741edb0483d584bba2309e9a10c98c3dd2f8299a5f571948c", kill_on_drop: false }`
[INFO] [stdout] 30ab8ec81fd7e54741edb0483d584bba2309e9a10c98c3dd2f8299a5f571948c
