[INFO] fetching crate tuifw-screen-winapi 0.11.0...
[INFO] documenting tuifw-screen-winapi-0.11.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate tuifw-screen-winapi 0.11.0 into /workspace/builds/worker-30/source
[INFO] validating manifest of crates.io crate tuifw-screen-winapi 0.11.0 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tuifw-screen-winapi 0.11.0
[INFO] finished tweaking crates.io crate tuifw-screen-winapi 0.11.0
[INFO] tweaked toml for crates.io crate tuifw-screen-winapi 0.11.0 written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded panicking v0.1.1
[INFO] [stderr]   Downloaded enum-derive-2018 v2.0.1
[INFO] [stderr]   Downloaded macro-attr-2018 v2.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc5541e42bb04d19fddae86709aa634bd01dfb2f851febc1cf42b2fe903fa7d1
[INFO] running `Command { std: "docker" "start" "-a" "cc5541e42bb04d19fddae86709aa634bd01dfb2f851febc1cf42b2fe903fa7d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc5541e42bb04d19fddae86709aa634bd01dfb2f851febc1cf42b2fe903fa7d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc5541e42bb04d19fddae86709aa634bd01dfb2f851febc1cf42b2fe903fa7d1", kill_on_drop: false }`
[INFO] [stdout] cc5541e42bb04d19fddae86709aa634bd01dfb2f851febc1cf42b2fe903fa7d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4d6ee2f17e19315f73e3915cdf96170dd8b0f5f55ac9f4af367d2719eeb1c63
[INFO] running `Command { std: "docker" "start" "-a" "e4d6ee2f17e19315f73e3915cdf96170dd8b0f5f55ac9f4af367d2719eeb1c63", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling winapi v0.3.9
[INFO] [stderr]     Checking macro-attr-2018 v2.1.2
[INFO] [stderr]     Checking enum-derive-2018 v2.0.1
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking panicking v0.1.1
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling errno-sys v0.0.1
[INFO] [stderr]    Compiling iconv-sys v0.0.3
[INFO] [stderr]     Checking errno-no-std v0.0.4
[INFO] [stderr]     Checking tuifw-screen-base v0.11.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tuifw-screen-base-0.11.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(stmt_expr_attributes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tuifw-screen-base` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "e4d6ee2f17e19315f73e3915cdf96170dd8b0f5f55ac9f4af367d2719eeb1c63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4d6ee2f17e19315f73e3915cdf96170dd8b0f5f55ac9f4af367d2719eeb1c63", kill_on_drop: false }`
[INFO] [stdout] e4d6ee2f17e19315f73e3915cdf96170dd8b0f5f55ac9f4af367d2719eeb1c63