[INFO] crate serial-windows 0.4.0 is already in cache
[INFO] testing serial-windows-0.4.0 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate serial-windows 0.4.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate serial-windows 0.4.0 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8c24955b03b4c9efa6abc7f95d4184023b2fb9aee4ec54025a400bde372bdcb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b8c24955b03b4c9efa6abc7f95d4184023b2fb9aee4ec54025a400bde372bdcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8c24955b03b4c9efa6abc7f95d4184023b2fb9aee4ec54025a400bde372bdcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8c24955b03b4c9efa6abc7f95d4184023b2fb9aee4ec54025a400bde372bdcb", kill_on_drop: false }`
[INFO] [stdout] b8c24955b03b4c9efa6abc7f95d4184023b2fb9aee4ec54025a400bde372bdcb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d6308dadb254f7d68afacba94d989008bef0647eb1f525f6ce7ca76f7a1b2ab2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d6308dadb254f7d68afacba94d989008bef0647eb1f525f6ce7ca76f7a1b2ab2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling serial-core v0.4.0
[INFO] [stderr]    Compiling serial-windows v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: could not find `windows` in `os`
[INFO] [stdout]   --> src/com.rs:10:14
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::os::windows::prelude::*;
[INFO] [stdout]    |              ^^^^^^^ could not find `windows` in `os`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `core`, `error`
[INFO] [stdout]  --> src/com.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 2 | use error;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `AsRawHandle` in this scope
[INFO] [stdout]   --> src/com.rs:94:6
[INFO] [stdout]    |
[INFO] [stdout] 94 | impl AsRawHandle for COMPort {
[INFO] [stdout]    |      ^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `RawHandle` in this scope
[INFO] [stdout]   --> src/com.rs:95:32
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn as_raw_handle(&self) -> RawHandle {
[INFO] [stdout]    |                                ^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/com.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |             try!(port.set_timeout(timeout));
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0405, E0412, E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0405`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serial-windows`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "d6308dadb254f7d68afacba94d989008bef0647eb1f525f6ce7ca76f7a1b2ab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6308dadb254f7d68afacba94d989008bef0647eb1f525f6ce7ca76f7a1b2ab2", kill_on_drop: false }`
[INFO] [stdout] d6308dadb254f7d68afacba94d989008bef0647eb1f525f6ce7ca76f7a1b2ab2