[INFO] fetching crate mma7660fc 0.1.2...
[INFO] checking mma7660fc-0.1.2 against try#38f08371587f97c145dedb2c055ac7b01bf1e788 for pr-65294
[INFO] extracting crate mma7660fc 0.1.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate mma7660fc 0.1.2 on toolchain 38f08371587f97c145dedb2c055ac7b01bf1e788
[INFO] running `"/workspace/cargo-home/bin/cargo" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mma7660fc 0.1.2
[INFO] finished tweaking crates.io crate mma7660fc 0.1.2
[INFO] tweaked toml for crates.io crate mma7660fc 0.1.2 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9f30e37387d1b7558f333ea4b488d505e688c1e247a690641494087aaaf94753
[INFO] running `"docker" "start" "-a" "9f30e37387d1b7558f333ea4b488d505e688c1e247a690641494087aaaf94753"`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]     Checking embedded-hal v0.2.3
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking embedded-hal v0.1.3
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking mma7660fc v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] error: use of deprecated item 'core::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/lib.rs:177:44
[INFO] [stderr]     |
[INFO] [stderr] 177 |         let mut buffer: [u8; 3] = unsafe { mem::uninitialized() };
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/lib.rs:60:9
[INFO] [stderr]     |
[INFO] [stderr] 60  | #![deny(warnings)]
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     = note: `#[deny(deprecated)]` implied by `#[deny(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `mma7660fc`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "9f30e37387d1b7558f333ea4b488d505e688c1e247a690641494087aaaf94753"`
[INFO] running `"docker" "rm" "-f" "9f30e37387d1b7558f333ea4b488d505e688c1e247a690641494087aaaf94753"`
[INFO] [stdout] 9f30e37387d1b7558f333ea4b488d505e688c1e247a690641494087aaaf94753