[INFO] fetching crate ffi-mock 0.1.0...
[INFO] checking ffi-mock-0.1.0 against master#ed141926048597e3649bb238ca3dc417904cd56c for pr-134300
[INFO] extracting crate ffi-mock 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate ffi-mock 0.1.0 on toolchain ed141926048597e3649bb238ca3dc417904cd56c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ed141926048597e3649bb238ca3dc417904cd56c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ffi-mock 0.1.0
[INFO] finished tweaking crates.io crate ffi-mock 0.1.0
[INFO] tweaked toml for crates.io crate ffi-mock 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ed141926048597e3649bb238ca3dc417904cd56c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ed141926048597e3649bb238ca3dc417904cd56c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ffi-mock-macro v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ed141926048597e3649bb238ca3dc417904cd56c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 530c346bc633bcbfcd6023202c6b7c8f20d699abe0654d23e092779d280791d3
[INFO] running `Command { std: "docker" "start" "-a" "530c346bc633bcbfcd6023202c6b7c8f20d699abe0654d23e092779d280791d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "530c346bc633bcbfcd6023202c6b7c8f20d699abe0654d23e092779d280791d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "530c346bc633bcbfcd6023202c6b7c8f20d699abe0654d23e092779d280791d3", kill_on_drop: false }`
[INFO] [stdout] 530c346bc633bcbfcd6023202c6b7c8f20d699abe0654d23e092779d280791d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ed141926048597e3649bb238ca3dc417904cd56c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cfa57e18d7484d0312751ff19534e761a8965033043511a139ebde2107038e26
[INFO] running `Command { std: "docker" "start" "-a" "cfa57e18d7484d0312751ff19534e761a8965033043511a139ebde2107038e26", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.90
[INFO] [stderr]    Compiling ffi-mock-macro v0.1.0
[INFO] [stderr]     Checking ffi-mock v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `b` and `c` are never read
[INFO] [stdout]   --> src/lib.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     struct TestStruct {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 79 |         a: u32,
[INFO] [stdout] 80 |         b: *const std::ffi::c_void,
[INFO] [stdout]    |         ^
[INFO] [stdout] 81 |         c: usize,
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TestStruct` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `TestStruct`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:84:60
[INFO] [stdout]    |
[INFO] [stdout] 84 |         fn test_fun(a: u32, b: *const std::ffi::c_void, c: TestStruct) -> TestStruct;
[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] note: the type is defined here
[INFO] [stdout]   --> src/lib.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 78 |     struct TestStruct {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `TestStruct`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:84:75
[INFO] [stdout]    |
[INFO] [stdout] 84 |         fn test_fun(a: u32, b: *const std::ffi::c_void, c: TestStruct) -> TestStruct;
[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] note: the type is defined here
[INFO] [stdout]   --> src/lib.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 78 |     struct TestStruct {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `TestStruct`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:106:64
[INFO] [stdout]     |
[INFO] [stdout] 106 |             fn test_fun(a: u32, b: *const std::ffi::c_void, c: TestStruct) -> TestStruct
[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] note: the type is defined here
[INFO] [stdout]    --> src/lib.rs:78:5
[INFO] [stdout]     |
[INFO] [stdout] 78  |     struct TestStruct {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `TestStruct`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:106:79
[INFO] [stdout]     |
[INFO] [stdout] 106 |             fn test_fun(a: u32, b: *const std::ffi::c_void, c: TestStruct) -> TestStruct
[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] note: the type is defined here
[INFO] [stdout]    --> src/lib.rs:78:5
[INFO] [stdout]     |
[INFO] [stdout] 78  |     struct TestStruct {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.36s
[INFO] running `Command { std: "docker" "inspect" "cfa57e18d7484d0312751ff19534e761a8965033043511a139ebde2107038e26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfa57e18d7484d0312751ff19534e761a8965033043511a139ebde2107038e26", kill_on_drop: false }`
[INFO] [stdout] cfa57e18d7484d0312751ff19534e761a8965033043511a139ebde2107038e26