[INFO] fetching crate expose 0.1.1...
[INFO] testing expose-0.1.1 against 1.59.0 for beta-1.60-1
[INFO] extracting crate expose 0.1.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate expose 0.1.1 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate expose 0.1.1
[INFO] finished tweaking crates.io crate expose 0.1.1
[INFO] tweaked toml for crates.io crate expose 0.1.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb4d4183a6404cb74b4b3da960b3f432a8ac40b8790566832b62b814d043548b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fb4d4183a6404cb74b4b3da960b3f432a8ac40b8790566832b62b814d043548b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb4d4183a6404cb74b4b3da960b3f432a8ac40b8790566832b62b814d043548b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb4d4183a6404cb74b4b3da960b3f432a8ac40b8790566832b62b814d043548b", kill_on_drop: false }`
[INFO] [stdout] fb4d4183a6404cb74b4b3da960b3f432a8ac40b8790566832b62b814d043548b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 294a977ed4a8a7dc2b6e99a22a4a5aec960b9372cfa84f919d809f12b800b388
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "294a977ed4a8a7dc2b6e99a22a4a5aec960b9372cfa84f919d809f12b800b388", kill_on_drop: false }`
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling cbindgen v0.8.7
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling fastrand v1.7.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling itoa v1.0.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling expose v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 53.29s
[INFO] running `Command { std: "docker" "inspect" "294a977ed4a8a7dc2b6e99a22a4a5aec960b9372cfa84f919d809f12b800b388", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "294a977ed4a8a7dc2b6e99a22a4a5aec960b9372cfa84f919d809f12b800b388", kill_on_drop: false }`
[INFO] [stdout] 294a977ed4a8a7dc2b6e99a22a4a5aec960b9372cfa84f919d809f12b800b388
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77c74e6d811ebd81dd909f651b70062c590028dd49a40e47dc898cf21255f65e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "77c74e6d811ebd81dd909f651b70062c590028dd49a40e47dc898cf21255f65e", kill_on_drop: false }`
[INFO] [stderr]    Compiling expose v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` fn uses type `String`, which is not FFI-safe
[INFO] [stdout]   --> tests/smoke.rs:11:49
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn test_more_complex(x: i32, y: i32, z: String) -> String {
[INFO] [stdout]    |                                                 ^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]    = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `String`, which is not FFI-safe
[INFO] [stdout]   --> tests/smoke.rs:11:60
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn test_more_complex(x: i32, y: i32, z: String) -> String {
[INFO] [stdout]    |                                                            ^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]    = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `Command { std: "docker" "inspect" "77c74e6d811ebd81dd909f651b70062c590028dd49a40e47dc898cf21255f65e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77c74e6d811ebd81dd909f651b70062c590028dd49a40e47dc898cf21255f65e", kill_on_drop: false }`
[INFO] [stdout] 77c74e6d811ebd81dd909f651b70062c590028dd49a40e47dc898cf21255f65e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d87e9cc5f869b2b0c32c95ceea7c5cff48e736dfbc61e82d80d73f673a7a513f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d87e9cc5f869b2b0c32c95ceea7c5cff48e736dfbc61e82d80d73f673a7a513f", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: `extern` fn uses type `String`, which is not FFI-safe
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> tests/smoke.rs:11:49
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 11 |     pub fn test_more_complex(x: i32, y: i32, z: String) -> String {
[INFO] [stdout] 
[INFO] [stderr]    |                                                 ^^^^^^ not FFI-safe
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] running 3 tests
[INFO] [stderr]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] test test_expose_cpp::can_use_exposed_enum ... ok
[INFO] [stderr]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout] test test_expose_cpp::can_call_more_complex_func ... ok
[INFO] [stderr]    = note: this struct has unspecified layout
[INFO] [stdout] test test_expose_cpp::can_call_basic_func ... ok
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: `extern` fn uses type `String`, which is not FFI-safe
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]   --> tests/smoke.rs:11:60
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn test_more_complex(x: i32, y: i32, z: String) -> String {
[INFO] [stderr]    |                                                            ^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr]    = note: this struct has unspecified layout
[INFO] [stderr] 
[INFO] [stderr] warning: `expose` (test "smoke") generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/expose-6a700348cde384d9)
[INFO] [stderr]      Running tests/smoke.rs (/opt/rustwide/target/debug/deps/smoke-daad052b3d82b327)
[INFO] [stderr]    Doc-tests expose
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - enumeration (line 31) ... FAILED
[INFO] [stdout] test src/lib.rs - function (line 12) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - enumeration (line 31) stdout ----
[INFO] [stdout] error: custom attribute panicked
[INFO] [stdout]  --> src/lib.rs:32:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[expose::enumeration]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: message: Exposed member must be public
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - enumeration (line 31)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.55s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "d87e9cc5f869b2b0c32c95ceea7c5cff48e736dfbc61e82d80d73f673a7a513f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d87e9cc5f869b2b0c32c95ceea7c5cff48e736dfbc61e82d80d73f673a7a513f", kill_on_drop: false }`
[INFO] [stdout] d87e9cc5f869b2b0c32c95ceea7c5cff48e736dfbc61e82d80d73f673a7a513f