[INFO] cloning repository https://github.com/Yatekii/modbus-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Yatekii/modbus-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYatekii%2Fmodbus-rs"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYatekii%2Fmodbus-rs'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] eb7dd8b1ebcd1c6fb7cb461b1c61d758b7b533f2
[INFO] testing Yatekii/modbus-rs against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYatekii%2Fmodbus-rs" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Yatekii/modbus-rs on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Yatekii/modbus-rs
[INFO] finished tweaking git repo https://github.com/Yatekii/modbus-rs
[INFO] tweaked toml for git repo https://github.com/Yatekii/modbus-rs written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Yatekii/modbus-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-06-03" "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] 7719d4bc7fb9ae746b4bd0c5d56a7f4450bb7d1f137efc131fbbf4db3a35d731
[INFO] running `"docker" "start" "-a" "7719d4bc7fb9ae746b4bd0c5d56a7f4450bb7d1f137efc131fbbf4db3a35d731"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling static_assertions v0.3.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling lexical-core v0.6.7
[INFO] [stderr]    Compiling modbus-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0658]: custom discriminant values are not allowed in enums with tuple or struct variants
[INFO] [stderr]   --> src/lib.rs:28:37
[INFO] [stderr]    |
[INFO] [stderr] 14 |     ReadCoils { address: u16, count: u16 },
[INFO] [stderr]    |     -------------------------------------- struct variant defined here
[INFO] [stderr] 15 |     // FnCode = 2
[INFO] [stderr] 16 |     ReadDiscreteInputs { address: u16, count: u16 },
[INFO] [stderr]    |     ----------------------------------------------- struct variant defined here
[INFO] [stderr] 17 |     // FnCode = 3
[INFO] [stderr] 18 |     ReadMultipleHoldingRegisters { address: u16, count: u16 },
[INFO] [stderr]    |     --------------------------------------------------------- struct variant defined here
[INFO] [stderr] 19 |     // FnCode = 4
[INFO] [stderr] 20 |     ReadInputRegisters { address: u16, count: u16 },
[INFO] [stderr]    |     ----------------------------------------------- struct variant defined here
[INFO] [stderr] 21 |     // FnCode = 5
[INFO] [stderr] 22 |     WriteSingleCoil { address: u16, value: Status },
[INFO] [stderr]    |     ----------------------------------------------- struct variant defined here
[INFO] [stderr] 23 |     // FnCode = 6
[INFO] [stderr] 24 |     WriteSingleHoldingRegister { address: u16, value: u16 },
[INFO] [stderr]    |     ------------------------------------------------------- struct variant defined here
[INFO] [stderr] 25 |     // FnCode = 15
[INFO] [stderr] 26 |     WriteMultipleCoils { address: u16 },
[INFO] [stderr]    |     ----------------------------------- struct variant defined here
[INFO] [stderr] 27 |     // FnCode = 16
[INFO] [stderr] 28 |     WriteMultipleHoldingRegisters = 16,
[INFO] [stderr]    |                                     ^^ disallowed custom discriminant
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #60553 <https://github.com/rust-lang/rust/issues/60553> for more information
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `*`
[INFO] [stderr]  --> src/lib.rs:1:35
[INFO] [stderr]   |
[INFO] [stderr] 1 | use nom::{bytes::streaming::take, *};
[INFO] [stderr]   |                                   ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/lib.rs:31:40
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn parse_modbus_frame(input: &[u8]) -> nom::IResult<&[u8], Frame, ()> {
[INFO] [stderr]    |    ------------------                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found `()`
[INFO] [stderr]    |    |
[INFO] [stderr]    |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stderr]    |
[INFO] [stderr]    = note:   expected enum `std::result::Result<(&[u8], Frame), nom::internal::Err<()>>`
[INFO] [stderr]            found unit type `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `modbus-rs`.
[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" "7719d4bc7fb9ae746b4bd0c5d56a7f4450bb7d1f137efc131fbbf4db3a35d731"`
[INFO] running `"docker" "rm" "-f" "7719d4bc7fb9ae746b4bd0c5d56a7f4450bb7d1f137efc131fbbf4db3a35d731"`
[INFO] [stdout] 7719d4bc7fb9ae746b4bd0c5d56a7f4450bb7d1f137efc131fbbf4db3a35d731