[INFO] fetching crate serial-windows 0.4.0...
[INFO] testing serial-windows-0.4.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate serial-windows 0.4.0 into /workspace/builds/worker-1-tc2/source
[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-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serial-windows 0.4.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a40daef44c0993648d49222e6d4d222d4f70cb133da3398e2be5d5c6590ae34
[INFO] running `Command { std: "docker" "start" "-a" "8a40daef44c0993648d49222e6d4d222d4f70cb133da3398e2be5d5c6590ae34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a40daef44c0993648d49222e6d4d222d4f70cb133da3398e2be5d5c6590ae34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a40daef44c0993648d49222e6d4d222d4f70cb133da3398e2be5d5c6590ae34", kill_on_drop: false }`
[INFO] [stdout] 8a40daef44c0993648d49222e6d4d222d4f70cb133da3398e2be5d5c6590ae34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18af44de2921cab7b43bcc67672147c81065c83ca7ddcb56e529b91723f9e149
[INFO] running `Command { std: "docker" "start" "-a" "18af44de2921cab7b43bcc67672147c81065c83ca7ddcb56e529b91723f9e149", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling serial-core v0.4.0
[INFO] [stderr]    Compiling serial-windows v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: cannot 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] note: found an item that was configured out
[INFO] [stdout]   --> /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/os/mod.rs:56:4
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item is gated here
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/os/mod.rs:120:9
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item is gated here
[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[E0425]: 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 macro `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] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/com.rs:77:47
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut status: DWORD = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[link_name]` attribute cannot be used on foreign modules
[INFO] [stdout]   --> src/error.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     #[link_name = "kernel32"]
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[link_name]` can be applied to foreign functions and foreign statics
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0405, E0425, 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` (lib) due to 3 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "18af44de2921cab7b43bcc67672147c81065c83ca7ddcb56e529b91723f9e149", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18af44de2921cab7b43bcc67672147c81065c83ca7ddcb56e529b91723f9e149", kill_on_drop: false }`
[INFO] [stdout] 18af44de2921cab7b43bcc67672147c81065c83ca7ddcb56e529b91723f9e149
