[INFO] crate serial-windows 0.4.0 is already in cache
[INFO] testing serial-windows-0.4.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate serial-windows 0.4.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate serial-windows 0.4.0 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 crates.io crate serial-windows 0.4.0
[INFO] finished tweaking crates.io crate serial-windows 0.4.0
[INFO] tweaked toml for crates.io crate serial-windows 0.4.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 3e4c188e26d8700f31a5e061fb1a492238626bac371269b3a804940222f3e4b8
[INFO] running `"docker" "start" "-a" "3e4c188e26d8700f31a5e061fb1a492238626bac371269b3a804940222f3e4b8"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling serial-core v0.4.0
[INFO] [stderr]    Compiling serial-windows v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: could not find `windows` in `os`
[INFO] [stderr]   --> src/com.rs:10:14
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::os::windows::prelude::*;
[INFO] [stderr]    |              ^^^^^^^ could not find `windows` in `os`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved imports `core`, `error`
[INFO] [stderr]  --> src/com.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use core;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 2 | use error;
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `AsRawHandle` in this scope
[INFO] [stderr]   --> src/com.rs:94:6
[INFO] [stderr]    |
[INFO] [stderr] 94 | impl AsRawHandle for COMPort {
[INFO] [stderr]    |      ^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `RawHandle` in this scope
[INFO] [stderr]   --> src/com.rs:95:32
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn as_raw_handle(&self) -> RawHandle {
[INFO] [stderr]    |                                ^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/com.rs:61:13
[INFO] [stderr]    |
[INFO] [stderr] 61 |             try!(port.set_timeout(timeout));
[INFO] [stderr]    |             ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0405, E0412, E0432, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0405`.
[INFO] [stderr] error: could not compile `serial-windows`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3e4c188e26d8700f31a5e061fb1a492238626bac371269b3a804940222f3e4b8"`
[INFO] running `"docker" "rm" "-f" "3e4c188e26d8700f31a5e061fb1a492238626bac371269b3a804940222f3e4b8"`
[INFO] [stdout] 3e4c188e26d8700f31a5e061fb1a492238626bac371269b3a804940222f3e4b8