[INFO] fetching crate multiwii-serial-protocol-2 0.1.2...
[INFO] testing multiwii-serial-protocol-2-0.1.2 against 1.44.0 for beta-1.45-1
[INFO] extracting crate multiwii-serial-protocol-2 0.1.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate multiwii-serial-protocol-2 0.1.2 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate multiwii-serial-protocol-2 0.1.2
[INFO] finished tweaking crates.io crate multiwii-serial-protocol-2 0.1.2
[INFO] tweaked toml for crates.io crate multiwii-serial-protocol-2 0.1.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7465d43b7cbf35becab2e378d0e87b5d24c951fea92509dbce0c0de657685db0
[INFO] running `"docker" "start" "-a" "7465d43b7cbf35becab2e378d0e87b5d24c951fea92509dbce0c0de657685db0"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling packed_struct v0.3.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling debug-helper v0.3.8
[INFO] [stderr]    Compiling crc-any v2.3.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling packed_struct_codegen v0.3.0
[INFO] [stderr]    Compiling multiwii-serial-protocol-2 v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.54s
[INFO] running `"docker" "inspect" "7465d43b7cbf35becab2e378d0e87b5d24c951fea92509dbce0c0de657685db0"`
[INFO] running `"docker" "rm" "-f" "7465d43b7cbf35becab2e378d0e87b5d24c951fea92509dbce0c0de657685db0"`
[INFO] [stdout] 7465d43b7cbf35becab2e378d0e87b5d24c951fea92509dbce0c0de657685db0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 92c53aae1752091e02c51b200512fd89542bf9a077a01f5eaf47014456a5dce4
[INFO] running `"docker" "start" "-a" "92c53aae1752091e02c51b200512fd89542bf9a077a01f5eaf47014456a5dce4"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling multiwii-serial-protocol-2 v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/packet.rs:336:9
[INFO] [stderr]     |
[INFO] [stderr] 336 |         data: Cow::Owned(vec![0xbe, 0xef])
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::vec::Vec`, found enum `std::borrow::Cow`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected struct `std::vec::Vec<u8>`
[INFO] [stderr]                  found enum `std::borrow::Cow<'_, _>`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/packet.rs:387:10
[INFO] [stderr]     |
[INFO] [stderr] 387 |             data: Cow::Owned(vec![0x00, 0x00, 0x00])
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::vec::Vec`, found enum `std::borrow::Cow`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected struct `std::vec::Vec<u8>`
[INFO] [stderr]                  found enum `std::borrow::Cow<'_, _>`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/packet.rs:396:10
[INFO] [stderr]     |
[INFO] [stderr] 396 |             data: Cow::Owned(vec![])
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^ expected struct `std::vec::Vec`, found enum `std::borrow::Cow`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected struct `std::vec::Vec<u8>`
[INFO] [stderr]                  found enum `std::borrow::Cow<'_, _>`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/packet.rs:405:10
[INFO] [stderr]     |
[INFO] [stderr] 405 |             data: Cow::Owned(vec![0x44, 0x20, 0x00, 0x80])
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::vec::Vec`, found enum `std::borrow::Cow`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected struct `std::vec::Vec<u8>`
[INFO] [stderr]                  found enum `std::borrow::Cow<'_, _>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `multiwii-serial-protocol-2`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "92c53aae1752091e02c51b200512fd89542bf9a077a01f5eaf47014456a5dce4"`
[INFO] running `"docker" "rm" "-f" "92c53aae1752091e02c51b200512fd89542bf9a077a01f5eaf47014456a5dce4"`
[INFO] [stdout] 92c53aae1752091e02c51b200512fd89542bf9a077a01f5eaf47014456a5dce4