[INFO] crate multiwii-serial-protocol-2 0.1.2 is already in cache
[INFO] checking multiwii-serial-protocol-2-0.1.2 against try#d7b51666469c792a8a3f40849607739bae1e705e for pr-71665
[INFO] extracting crate multiwii-serial-protocol-2 0.1.2 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate multiwii-serial-protocol-2 0.1.2 on toolchain d7b51666469c792a8a3f40849607739bae1e705e
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "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-14/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "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-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" "+d7b51666469c792a8a3f40849607739bae1e705e" "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] 5f73d8ef1e8688778a7b0e375e6ee20ed584b9bb93a0e05ecfe1c986f452c0cb
[INFO] running `"docker" "start" "-a" "5f73d8ef1e8688778a7b0e375e6ee20ed584b9bb93a0e05ecfe1c986f452c0cb"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling serde v1.0.109
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]    Compiling packed_struct v0.3.0
[INFO] [stderr]     Checking debug-helper v0.3.8
[INFO] [stderr]     Checking crc-any v2.3.0
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.109
[INFO] [stderr]    Compiling packed_struct_codegen v0.3.0
[INFO] [stderr]     Checking 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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "5f73d8ef1e8688778a7b0e375e6ee20ed584b9bb93a0e05ecfe1c986f452c0cb"`
[INFO] running `"docker" "rm" "-f" "5f73d8ef1e8688778a7b0e375e6ee20ed584b9bb93a0e05ecfe1c986f452c0cb"`
[INFO] [stdout] 5f73d8ef1e8688778a7b0e375e6ee20ed584b9bb93a0e05ecfe1c986f452c0cb