[INFO] fetching crate ein-ffi 0.6.0...
[INFO] testing ein-ffi-0.6.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate ein-ffi 0.6.0 into /workspace/builds/worker-50/source
[INFO] validating manifest of crates.io crate ein-ffi 0.6.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-50/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c6bc6a4b5486c6cf9108979acea57d015879c55ff43e5b4324d72cfe84266bd
[INFO] running `Command { std: "docker" "start" "-a" "1c6bc6a4b5486c6cf9108979acea57d015879c55ff43e5b4324d72cfe84266bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c6bc6a4b5486c6cf9108979acea57d015879c55ff43e5b4324d72cfe84266bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c6bc6a4b5486c6cf9108979acea57d015879c55ff43e5b4324d72cfe84266bd", kill_on_drop: false }`
[INFO] [stdout] 1c6bc6a4b5486c6cf9108979acea57d015879c55ff43e5b4324d72cfe84266bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26678efffa9c73e904d3c18f4df218421bccd1542d8207656e9442a350ff9b3e
[INFO] running `Command { std: "docker" "start" "-a" "26678efffa9c73e904d3c18f4df218421bccd1542d8207656e9442a350ff9b3e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ein-ffi v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.06s
[INFO] running `Command { std: "docker" "inspect" "26678efffa9c73e904d3c18f4df218421bccd1542d8207656e9442a350ff9b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26678efffa9c73e904d3c18f4df218421bccd1542d8207656e9442a350ff9b3e", kill_on_drop: false }`
[INFO] [stdout] 26678efffa9c73e904d3c18f4df218421bccd1542d8207656e9442a350ff9b3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c8afea73b2e1b60e5532f552be2c75f32acb9a250a64272769186e1bbc1f69e
[INFO] running `Command { std: "docker" "start" "-a" "9c8afea73b2e1b60e5532f552be2c75f32acb9a250a64272769186e1bbc1f69e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ein-ffi v0.6.0 (/opt/rustwide/workdir)
[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] 
[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] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 8.90s
[INFO] running `Command { std: "docker" "inspect" "9c8afea73b2e1b60e5532f552be2c75f32acb9a250a64272769186e1bbc1f69e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c8afea73b2e1b60e5532f552be2c75f32acb9a250a64272769186e1bbc1f69e", kill_on_drop: false }`
[INFO] [stdout] 9c8afea73b2e1b60e5532f552be2c75f32acb9a250a64272769186e1bbc1f69e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 09156e88bd5d3ff56b422c2ff858a6523753d32112c5e7ec14393fd2e7693892
[INFO] running `Command { std: "docker" "start" "-a" "09156e88bd5d3ff56b422c2ff858a6523753d32112c5e7ec14393fd2e7693892", kill_on_drop: false }`
[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)]` on by default
[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] warning: `ein-ffi` (lib test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ein_ffi-802a43bc89def9a9)
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test arc::arc_block::tests::create_null ... ok
[INFO] [stdout] test arc::arc_block::tests::clone ... ok
[INFO] [stdout] test arc::arc_block::tests::drop ... ok
[INFO] [stdout] test arc::arc_block::tests::create ... ok
[INFO] [stdout] test arc::arc_buffer::tests::create_zero_sized_buffer ... ok
[INFO] [stdout] test arc::arc_block::tests::drop_twice ... ok
[INFO] [stdout] test arc::arc_buffer::tests::create_buffer ... ok
[INFO] [stdout] test arc::arc_buffer::tests::convert_from_string ... ok
[INFO] [stdout] test arc::arc_buffer::tests::clone ... ok
[INFO] [stdout] test arc::tests::clone ... ok
[INFO] [stdout] test arc::arc_buffer::tests::convert_from_vec ... ok
[INFO] [stdout] test arc::tests::zero_sized::create ... ok
[INFO] [stdout] test string::tests::slice_with_emojis ... ok
[INFO] [stdout] test string::tests::slice_with_negative_index ... ok
[INFO] [stdout] test string::tests::slice_into_whole ... ok
[INFO] [stdout] test arc::tests::create ... ok
[INFO] [stdout] test string::tests::join_empty ... ok
[INFO] [stdout] test string::tests::slice_into_empty ... ok
[INFO] [stdout] test string::tests::slice_with_ascii ... ok
[INFO] [stdout] test string::tests::slice_last_with_emojis ... ok
[INFO] [stdout] test arc::tests::zero_sized::clone ... ok
[INFO] [stdout] test arc::tests::load_payload ... ok
[INFO] [stdout] test arc::tests::zero_sized::load_payload ... ok
[INFO] [stderr]    Doc-tests ein-ffi
[INFO] [stdout] test string::tests::join ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "09156e88bd5d3ff56b422c2ff858a6523753d32112c5e7ec14393fd2e7693892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09156e88bd5d3ff56b422c2ff858a6523753d32112c5e7ec14393fd2e7693892", kill_on_drop: false }`
[INFO] [stdout] 09156e88bd5d3ff56b422c2ff858a6523753d32112c5e7ec14393fd2e7693892