[INFO] fetching crate ein-ffi 0.6.0...
[INFO] testing ein-ffi-0.6.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate ein-ffi 0.6.0 into /workspace/builds/worker-19/source
[INFO] validating manifest of crates.io crate ein-ffi 0.6.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-19/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe8f1b7329361b6721bacda37dfa7b7eb3ea599a158633fffd4ac33f3827109f
[INFO] running `Command { std: "docker" "start" "-a" "fe8f1b7329361b6721bacda37dfa7b7eb3ea599a158633fffd4ac33f3827109f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe8f1b7329361b6721bacda37dfa7b7eb3ea599a158633fffd4ac33f3827109f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe8f1b7329361b6721bacda37dfa7b7eb3ea599a158633fffd4ac33f3827109f", kill_on_drop: false }`
[INFO] [stdout] fe8f1b7329361b6721bacda37dfa7b7eb3ea599a158633fffd4ac33f3827109f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c50b5816a1ff1d14dc0af4c563e956d015dc94eb555978a056c4a3e9962ce482
[INFO] running `Command { std: "docker" "start" "-a" "c50b5816a1ff1d14dc0af4c563e956d015dc94eb555978a056c4a3e9962ce482", 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] [stderr]    Compiling ein-ffi v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "c50b5816a1ff1d14dc0af4c563e956d015dc94eb555978a056c4a3e9962ce482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c50b5816a1ff1d14dc0af4c563e956d015dc94eb555978a056c4a3e9962ce482", kill_on_drop: false }`
[INFO] [stdout] c50b5816a1ff1d14dc0af4c563e956d015dc94eb555978a056c4a3e9962ce482
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a21fd949df79d10cff9baf449abaae29952b821c72552ae5f26f3e9aa360b42b
[INFO] running `Command { std: "docker" "start" "-a" "a21fd949df79d10cff9baf449abaae29952b821c72552ae5f26f3e9aa360b42b", kill_on_drop: false }`
[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 0.43s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/ein_ffi-c0bf546a8ce33997)
[INFO] running `Command { std: "docker" "inspect" "a21fd949df79d10cff9baf449abaae29952b821c72552ae5f26f3e9aa360b42b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a21fd949df79d10cff9baf449abaae29952b821c72552ae5f26f3e9aa360b42b", kill_on_drop: false }`
[INFO] [stdout] a21fd949df79d10cff9baf449abaae29952b821c72552ae5f26f3e9aa360b42b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6282e8dea3e00b04e132e6505f842c5d336eb26d80b52dab21905358e8d0aabe
[INFO] running `Command { std: "docker" "start" "-a" "6282e8dea3e00b04e132e6505f842c5d336eb26d80b52dab21905358e8d0aabe", 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 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ein_ffi-c0bf546a8ce33997)
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test arc::arc_block::tests::clone ... ok
[INFO] [stdout] test arc::arc_block::tests::create ... ok
[INFO] [stdout] test arc::arc_block::tests::create_null ... ok
[INFO] [stdout] test arc::arc_block::tests::drop ... 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_buffer::tests::create_buffer ... ok
[INFO] [stdout] test arc::arc_buffer::tests::clone ... ok
[INFO] [stdout] test arc::arc_buffer::tests::create_zero_sized_buffer ... ok
[INFO] [stdout] test arc::tests::create ... ok
[INFO] [stdout] test arc::tests::clone ... ok
[INFO] [stdout] test arc::tests::load_payload ... ok
[INFO] [stdout] test arc::tests::zero_sized::clone ... ok
[INFO] [stdout] test arc::tests::zero_sized::create ... ok
[INFO] [stdout] test arc::tests::zero_sized::load_payload ... ok
[INFO] [stdout] test string::tests::join ... ok
[INFO] [stdout] test string::tests::join_empty ... ok
[INFO] [stdout] test string::tests::slice_into_empty ... ok
[INFO] [stdout] test string::tests::slice_into_whole ... ok
[INFO] [stderr]    Doc-tests ein-ffi
[INFO] [stdout] test string::tests::slice_last_with_emojis ... ok
[INFO] [stdout] test string::tests::slice_with_ascii ... ok
[INFO] [stdout] test string::tests::slice_with_emojis ... ok
[INFO] [stdout] test string::tests::slice_with_negative_index ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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" "6282e8dea3e00b04e132e6505f842c5d336eb26d80b52dab21905358e8d0aabe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6282e8dea3e00b04e132e6505f842c5d336eb26d80b52dab21905358e8d0aabe", kill_on_drop: false }`
[INFO] [stdout] 6282e8dea3e00b04e132e6505f842c5d336eb26d80b52dab21905358e8d0aabe