[INFO] crate relm 0.17.0 is already in cache
[INFO] checking relm-0.17.0 against master#4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb for pr-64672
[INFO] extracting crate relm 0.17.0 into work/builds/worker-6/source
[INFO] validating manifest of crates.io crate relm 0.17.0 on toolchain 4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate relm 0.17.0
[INFO] finished tweaking crates.io crate relm 0.17.0
[INFO] tweaked toml for crates.io crate relm 0.17.0 written to work/builds/worker-6/source/Cargo.toml
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4127666f0d00a0169176d47f63001dd3b17727a9015b6f1d6346aff51728a87d
[INFO] running `"docker" "start" "-a" "4127666f0d00a0169176d47f63001dd3b17727a9015b6f1d6346aff51728a87d"`
[INFO] [stderr]    Compiling gtk v0.7.0
[INFO] [stderr]     Checking relm v0.17.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: the type `std::mem::ManuallyDrop<std::cell::UnsafeCell<std::boxed::Box<T>>>` does not permit being left uninitialized
[INFO] [stderr]   --> src/vendor/fragile/fragile.rs:72:55
[INFO] [stderr]    |
[INFO] [stderr] 72 |             let value = mem::replace(&mut self.value, mem::uninitialized());
[INFO] [stderr]    |                                                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                                                       |
[INFO] [stderr]    |                                                       this code causes undefined behavior when executed
[INFO] [stderr]    |                                                       help: use `MaybeUninit<T>` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stderr] note: `Box` must be non-null (in this struct field)
[INFO] [stderr] 
[INFO] [stderr] warning: the type `std::mem::ManuallyDrop<std::cell::UnsafeCell<std::boxed::Box<T>>>` does not permit being left uninitialized
[INFO] [stderr]   --> src/vendor/fragile/fragile.rs:72:55
[INFO] [stderr]    |
[INFO] [stderr] 72 |             let value = mem::replace(&mut self.value, mem::uninitialized());
[INFO] [stderr]    |                                                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                                                       |
[INFO] [stderr]    |                                                       this code causes undefined behavior when executed
[INFO] [stderr]    |                                                       help: use `MaybeUninit<T>` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stderr] note: `Box` must be non-null (in this struct field)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.16s
[INFO] running `"docker" "inspect" "4127666f0d00a0169176d47f63001dd3b17727a9015b6f1d6346aff51728a87d"`
[INFO] running `"docker" "rm" "-f" "4127666f0d00a0169176d47f63001dd3b17727a9015b6f1d6346aff51728a87d"`
[INFO] [stdout] 4127666f0d00a0169176d47f63001dd3b17727a9015b6f1d6346aff51728a87d