[INFO] fetching crate wsterm 0.1.0...
[INFO] documenting wsterm-0.1.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate wsterm 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate wsterm 0.1.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wsterm 0.1.0
[INFO] finished tweaking crates.io crate wsterm 0.1.0
[INFO] tweaked toml for crates.io crate wsterm 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate wsterm 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded actix-web-actors v4.2.0
[INFO] [stderr]   Downloaded actix-http-test v3.1.0
[INFO] [stderr]   Downloaded pty-process v0.3.0
[INFO] [stderr]   Downloaded actix-test v0.1.1
[INFO] [stderr]   Downloaded awc v3.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97e7351fb5add2ceb041ec32642794844d6611125dd4f07f6832b50894b5866d
[INFO] running `Command { std: "docker" "start" "-a" "97e7351fb5add2ceb041ec32642794844d6611125dd4f07f6832b50894b5866d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97e7351fb5add2ceb041ec32642794844d6611125dd4f07f6832b50894b5866d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97e7351fb5add2ceb041ec32642794844d6611125dd4f07f6832b50894b5866d", kill_on_drop: false }`
[INFO] [stdout] 97e7351fb5add2ceb041ec32642794844d6611125dd4f07f6832b50894b5866d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c6aef6126e4b80637992533b778d7e7065882f7c652c2da85827cf2621a479b
[INFO] running `Command { std: "docker" "start" "-a" "1c6aef6126e4b80637992533b778d7e7065882f7c652c2da85827cf2621a479b", kill_on_drop: false }`
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[INFO] [stderr]     Checking once_cell v1.17.1
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[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]     Checking tracing-core v0.1.31
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[INFO] [stderr]     Checking actix-codec v0.5.1
[INFO] [stderr]     Checking h2 v0.3.19
[INFO] [stderr]     Checking actix v0.13.0
[INFO] [stderr]     Checking tokio-stream v0.1.14
[INFO] [stderr]     Checking actix-tls v3.0.3
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking actix-http v3.3.1
[INFO] [stderr]     Checking actix-web v4.3.1
[INFO] [stderr]     Checking awc v3.1.1
[INFO] [stderr]     Checking actix-http-test v3.1.0
[INFO] [stderr]     Checking actix-web-actors v4.2.0
[INFO] [stderr]     Checking actix-files v0.6.2
[INFO] [stderr]     Checking actix-test v0.1.1
[INFO] [stderr]  Documenting wsterm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(mutex_unlock)]
[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 document `wsterm`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type bin --crate-name wsterm src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=f0c3d389aeab0548 -L dependency=/opt/rustwide/target/debug/deps --extern actix=/opt/rustwide/target/debug/deps/libactix-b62f51a48337e467.rmeta --extern actix_files=/opt/rustwide/target/debug/deps/libactix_files-4544b2e7c7b084fb.rmeta --extern actix_test=/opt/rustwide/target/debug/deps/libactix_test-cd5f1c55797fcf62.rmeta --extern actix_web=/opt/rustwide/target/debug/deps/libactix_web-827b0b637553d6f0.rmeta --extern actix_web_actors=/opt/rustwide/target/debug/deps/libactix_web_actors-eb41ead02f260272.rmeta --extern async_stream=/opt/rustwide/target/debug/deps/libasync_stream-1c5998775617e73f.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-10ffa4d5bf440726.rmeta --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-29099ce5840b0f1a.rmeta --extern pty_process=/opt/rustwide/target/debug/deps/libpty_process-53c0f4b5c4b25567.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-8b3425b342f6ae9f.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-f04b1db1b97a5f5e.rmeta --extern tokio_codec=/opt/rustwide/target/debug/deps/libtokio_codec-9eaba8074f07c943.rmeta --extern tokio_stream=/opt/rustwide/target/debug/deps/libtokio_stream-263339ff626c0010.rmeta --extern tokio_util=/opt/rustwide/target/debug/deps/libtokio_util-0c4dc48777b84fbb.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "1c6aef6126e4b80637992533b778d7e7065882f7c652c2da85827cf2621a479b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c6aef6126e4b80637992533b778d7e7065882f7c652c2da85827cf2621a479b", kill_on_drop: false }`
[INFO] [stdout] 1c6aef6126e4b80637992533b778d7e7065882f7c652c2da85827cf2621a479b
