[INFO] fetching crate multiwii_serial_protocol 0.1.1...
[INFO] checking multiwii_serial_protocol-0.1.1 against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] extracting crate multiwii_serial_protocol 0.1.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate multiwii_serial_protocol 0.1.1 on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate multiwii_serial_protocol 0.1.1
[INFO] finished tweaking crates.io crate multiwii_serial_protocol 0.1.1
[INFO] tweaked toml for crates.io crate multiwii_serial_protocol 0.1.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ed1268dee52496cdbc65ad6a56a2472295c4fdecd710ed620653711901e2efc5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "ed1268dee52496cdbc65ad6a56a2472295c4fdecd710ed620653711901e2efc5"`
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling packed_struct v0.2.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr] error[E0606]: casting `f32` as `usize` is invalid
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/packed_struct-0.2.3/build.rs:24:75
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let b = format!("bits_type!(Bits{}, {}, Bytes{}, {});\r\n", i, i, (i as f32 / 8.0).ceil() as usize, if (i % 8) == 0 {
[INFO] [stderr]    |                                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0606`.
[INFO] [stderr] error: could not compile `packed_struct`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "ed1268dee52496cdbc65ad6a56a2472295c4fdecd710ed620653711901e2efc5"`
[INFO] running `"docker" "rm" "-f" "ed1268dee52496cdbc65ad6a56a2472295c4fdecd710ed620653711901e2efc5"`
[INFO] [stdout] ed1268dee52496cdbc65ad6a56a2472295c4fdecd710ed620653711901e2efc5