[INFO] fetching crate vst 0.2.1...
[INFO] testing vst-0.2.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate vst 0.2.1 into /workspace/builds/worker-53/source
[INFO] validating manifest of crates.io crate vst 0.2.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vst 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate vst 0.2.1
[INFO] tweaked toml for crates.io crate vst 0.2.1 written to /workspace/builds/worker-53/source/Cargo.toml
[INFO] crate crates.io crate vst 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5cb9e7c30989b363e863e1168c18f6cfe7f8e87a24fcba56b27aa25771f9da16
[INFO] running `Command { std: "docker" "start" "-a" "5cb9e7c30989b363e863e1168c18f6cfe7f8e87a24fcba56b27aa25771f9da16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cb9e7c30989b363e863e1168c18f6cfe7f8e87a24fcba56b27aa25771f9da16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cb9e7c30989b363e863e1168c18f6cfe7f8e87a24fcba56b27aa25771f9da16", kill_on_drop: false }`
[INFO] [stdout] 5cb9e7c30989b363e863e1168c18f6cfe7f8e87a24fcba56b27aa25771f9da16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 398ddb73d0d88b592d0b01f72ddfbbe63ee352a7041cf6109bb82672ddb98089
[INFO] running `Command { std: "docker" "start" "-a" "398ddb73d0d88b592d0b01f72ddfbbe63ee352a7041cf6109bb82672ddb98089", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.62
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling vst v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.39s
[INFO] running `Command { std: "docker" "inspect" "398ddb73d0d88b592d0b01f72ddfbbe63ee352a7041cf6109bb82672ddb98089", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "398ddb73d0d88b592d0b01f72ddfbbe63ee352a7041cf6109bb82672ddb98089", kill_on_drop: false }`
[INFO] [stdout] 398ddb73d0d88b592d0b01f72ddfbbe63ee352a7041cf6109bb82672ddb98089
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c0a252f6a1ba6922c3db608342c9ab7effef76f483161f15564c01d90b61640
[INFO] running `Command { std: "docker" "start" "-a" "1c0a252f6a1ba6922c3db608342c9ab7effef76f483161f15564c01d90b61640", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling vst v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` fn uses type `fn(*mut AEffect, i32, i32, isize, *mut c_void, f32) -> isize`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:182:51
[INFO] [stdout]     |
[INFO] [stdout] 182 |         pub extern "C" fn VSTPluginMain(callback: $crate::api::HostCallbackProc) -> *mut $crate::api::AEffect {
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout] ...
[INFO] [stdout] 319 |     plugin_main!(TestPlugin);
[INFO] [stdout]     |     ------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]     = help: consider using an `extern fn(...) -> ...` function pointer instead
[INFO] [stdout]     = note: this function pointer has Rust-specific calling convention
[INFO] [stdout]     = note: this warning originates in the macro `plugin_main` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.56s
[INFO] running `Command { std: "docker" "inspect" "1c0a252f6a1ba6922c3db608342c9ab7effef76f483161f15564c01d90b61640", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c0a252f6a1ba6922c3db608342c9ab7effef76f483161f15564c01d90b61640", kill_on_drop: false }`
[INFO] [stdout] 1c0a252f6a1ba6922c3db608342c9ab7effef76f483161f15564c01d90b61640
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 767852813eca4a7b4b5289cc14aa823d5d5e993451122167f788d38f4ac70e82
[INFO] running `Command { std: "docker" "start" "-a" "767852813eca4a7b4b5289cc14aa823d5d5e993451122167f788d38f4ac70e82", kill_on_drop: false }`
[INFO] [stderr] warning: `extern` fn uses type `fn(*mut AEffect, i32, i32, isize, *mut c_void, f32) -> isize`, which is not FFI-safe
[INFO] [stderr]    --> src/lib.rs:182:51
[INFO] [stderr]     |
[INFO] [stderr] 182 |         pub extern "C" fn VSTPluginMain(callback: $crate::api::HostCallbackProc) -> *mut $crate::api::AEffect {
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stderr] ...
[INFO] [stderr] 319 |     plugin_main!(TestPlugin);
[INFO] [stderr]     |     ------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stderr]     = help: consider using an `extern fn(...) -> ...` function pointer instead
[INFO] [stderr]     = note: this function pointer has Rust-specific calling convention
[INFO] [stderr]     = note: this warning originates in the macro `plugin_main` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `vst` (lib test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/vst-33986b75b70ac299)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test api::tests::encode_and_decode_gives_back_original_message ... ok
[INFO] [stdout] test buffer::tests::buffer_zip ... ok
[INFO] [stdout] test buffer::tests::buffer_zip_fewer_inputs_than_outputs ... ok
[INFO] [stdout] test api::tests::message_survives_calling_events ... ok
[INFO] [stdout] test buffer::tests::buffer_zip_more_inputs_than_outputs ... ok
[INFO] [stdout] test plugin::tests::host_callbacks ... ok
[INFO] [stdout] test buffer::tests::from_raw ... ok
[INFO] [stdout] test tests::host_callback ... ok
[INFO] [stdout] test tests::aeffect_created ... ok
[INFO] [stdout] test tests::aeffect_params ... ok
[INFO] [stdout] test tests::plugin_deref ... ok
[INFO] [stdout] test tests::plugin_drop ... ok
[INFO] [stdout] test tests::plugin_no_drop ... ok
[INFO] [stdout] test plugin::tests::null_panic - should panic ... ok
[INFO] [stdout] test host::tests::host_buffer ... ok
[INFO] [stdout] test util::parameter_transfer::tests::parameter_transfer ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.16s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests vst
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test src/api.rs - api::AEffect::flags (line 81) - compile ... ok
[INFO] [stdout] test src/plugin.rs - plugin::Plugin::process (line 568) - compile ... ok
[INFO] [stdout] test src/buffer.rs - buffer::SendEventBuffer::send_events (line 415) - compile ... ok
[INFO] [stdout] test src/api.rs - api::Events::events (line 434) - compile ... ok
[INFO] [stdout] test src/plugin.rs - plugin::Plugin::process_f64 (line 609) - compile ... ok
[INFO] [stdout] test src/host.rs - host::PluginLoader<T>::load (line 375) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 69) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 36) - compile ... ok
[INFO] [stdout] test src/plugin.rs - plugin::HostCallback (line 796) ... ok
[INFO] [stdout] test src/api.rs - api::Event (line 492) ... ok
[INFO] [stdout] test src/plugin.rs - plugin::Plugin::new (line 483) ... ok
[INFO] [stdout] test src/api.rs - api::Event::event_type (line 505) ... ok
[INFO] [stdout] test src/host.rs - host::HostBuffer (line 773) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.45s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "767852813eca4a7b4b5289cc14aa823d5d5e993451122167f788d38f4ac70e82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "767852813eca4a7b4b5289cc14aa823d5d5e993451122167f788d38f4ac70e82", kill_on_drop: false }`
[INFO] [stdout] 767852813eca4a7b4b5289cc14aa823d5d5e993451122167f788d38f4ac70e82