[INFO] fetching crate cargo-winrt 0.7.0...
[INFO] testing cargo-winrt-0.7.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate cargo-winrt 0.7.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate cargo-winrt 0.7.0 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 cargo-winrt 0.7.0
[INFO] finished tweaking crates.io crate cargo-winrt 0.7.0
[INFO] tweaked toml for crates.io crate cargo-winrt 0.7.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate cargo-winrt 0.7.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] ff54e8126a7246f2144d7f543d0462545b241a18c4e9ad8b9abd7ff6541b5bd6
[INFO] running `"docker" "start" "-a" "ff54e8126a7246f2144d7f543d0462545b241a18c4e9ad8b9abd7ff6541b5bd6"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling anyhow v1.0.31
[INFO] [stderr]    Compiling podio v0.1.7
[INFO] [stderr]    Compiling tokio v0.2.21
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]    Compiling pin-project-internal v0.4.19
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling zip v0.5.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]    Compiling structopt-derive v0.4.7
[INFO] [stderr]    Compiling pin-project v0.4.19
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tokio-tls v0.3.1
[INFO] [stderr]    Compiling structopt v0.3.14
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]    Compiling h2 v0.2.5
[INFO] [stderr]    Compiling futures-executor v0.3.5
[INFO] [stderr]    Compiling futures v0.3.5
[INFO] [stderr]    Compiling hyper v0.13.6
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling serde_json v1.0.53
[INFO] [stderr]    Compiling cargo_toml v0.8.0
[INFO] [stderr]    Compiling hyper-tls v0.4.1
[INFO] [stderr]    Compiling reqwest v0.10.6
[INFO] [stderr]    Compiling cargo-winrt v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: could not find `windows` in `os`
[INFO] [stderr]    --> src/main.rs:342:26
[INFO] [stderr]     |
[INFO] [stderr] 342 |                 std::os::windows::fs::symlink_file(&path, dll_path).unwrap();
[INFO] [stderr]     |                          ^^^^^^^ could not find `windows` in `os`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: could not compile `cargo-winrt`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ff54e8126a7246f2144d7f543d0462545b241a18c4e9ad8b9abd7ff6541b5bd6"`
[INFO] running `"docker" "rm" "-f" "ff54e8126a7246f2144d7f543d0462545b241a18c4e9ad8b9abd7ff6541b5bd6"`
[INFO] [stdout] ff54e8126a7246f2144d7f543d0462545b241a18c4e9ad8b9abd7ff6541b5bd6