[INFO] fetching crate clear-coat 0.0.3...
[INFO] documenting clear-coat-0.0.3 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate clear-coat 0.0.3 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate clear-coat 0.0.3 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate clear-coat 0.0.3
[INFO] finished tweaking crates.io crate clear-coat 0.0.3
[INFO] tweaked toml for crates.io crate clear-coat 0.0.3 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded iup-sys v0.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a4fc3bc452a186924cc7612db84005a4a2b2b5a1dd7fa0258da334a9d37d926
[INFO] running `Command { std: "docker" "start" "-a" "9a4fc3bc452a186924cc7612db84005a4a2b2b5a1dd7fa0258da334a9d37d926", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a4fc3bc452a186924cc7612db84005a4a2b2b5a1dd7fa0258da334a9d37d926", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a4fc3bc452a186924cc7612db84005a4a2b2b5a1dd7fa0258da334a9d37d926", kill_on_drop: false }`
[INFO] [stdout] 9a4fc3bc452a186924cc7612db84005a4a2b2b5a1dd7fa0258da334a9d37d926
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e08c04bc3e0e402af320fedafba369271171dd4b86ee739132fc460b6735f199
[INFO] running `Command { std: "docker" "start" "-a" "e08c04bc3e0e402af320fedafba369271171dd4b86ee739132fc460b6735f199", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling iup-sys v0.0.3
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking smallvec v0.1.8
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]  Documenting clear-coat v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not document `clear-coat`
[INFO] [stdout] error[E0432]: unresolved import `std::panic::RecoverSafe`
[INFO] [stdout]   --> src/callbacks.rs:14:24
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::panic::{self, RecoverSafe};
[INFO] [stdout]    |                        ^^^^^^^^^^^ no `RecoverSafe` in `panic`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(coerce_unsized)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(std_panic)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name clear_coat src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern iup_sys=/opt/rustwide/target/debug/deps/libiup_sys-c382e35b06dadadd.rmeta --extern kernel32=/opt/rustwide/target/debug/deps/libkernel32-231acf903f7d1bd3.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-34f3b748d9af774b.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-e5c839e3ed5f316d.rmeta --cap-lints=warn --crate-version 0.0.3` (exit status: 1)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(recover)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e08c04bc3e0e402af320fedafba369271171dd4b86ee739132fc460b6735f199", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e08c04bc3e0e402af320fedafba369271171dd4b86ee739132fc460b6735f199", kill_on_drop: false }`
[INFO] [stdout] e08c04bc3e0e402af320fedafba369271171dd4b86ee739132fc460b6735f199
