[INFO] fetching crate snocat 0.8.0-alpha.5...
[INFO] documenting snocat-0.8.0-alpha.5 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate snocat 0.8.0-alpha.5 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate snocat 0.8.0-alpha.5 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate snocat 0.8.0-alpha.5
[INFO] finished tweaking crates.io crate snocat 0.8.0-alpha.5
[INFO] tweaked toml for crates.io crate snocat 0.8.0-alpha.5 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crc16 v0.4.0
[INFO] [stderr]   Downloaded redis-protocol v4.1.0
[INFO] [stderr]   Downloaded fred v6.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f14318c98b4a57340f6d296245ace27b6812d51cbd5ab7919da678581caafdcd
[INFO] running `Command { std: "docker" "start" "-a" "f14318c98b4a57340f6d296245ace27b6812d51cbd5ab7919da678581caafdcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f14318c98b4a57340f6d296245ace27b6812d51cbd5ab7919da678581caafdcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f14318c98b4a57340f6d296245ace27b6812d51cbd5ab7919da678581caafdcd", kill_on_drop: false }`
[INFO] [stdout] f14318c98b4a57340f6d296245ace27b6812d51cbd5ab7919da678581caafdcd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e968c9aeb98cc5e797a5ebaf63379d75d0e9240f094cefd35ef88ef22830f9c
[INFO] running `Command { std: "docker" "start" "-a" "9e968c9aeb98cc5e797a5ebaf63379d75d0e9240f094cefd35ef88ef22830f9c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking untrusted v0.9.0
[INFO] [stderr]    Compiling rustls v0.21.10
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]    Compiling thiserror v1.0.57
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking rustls-native-certs v0.6.3
[INFO] [stderr]    Compiling anyhow v1.0.79
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]     Checking sha1_smol v1.0.0
[INFO] [stderr]     Checking arc-swap v1.6.0
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking dashmap v5.5.3
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling ring v0.17.7
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking sct v0.7.1
[INFO] [stderr]     Checking rustls-webpki v0.101.7
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling thiserror-impl v1.0.57
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling pin-project-internal v1.1.4
[INFO] [stderr]     Checking tokio v1.36.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking pin-project v1.1.4
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking quinn-udp v0.4.1
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking quinn-proto v0.10.6
[INFO] [stderr]     Checking serde v1.0.196
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking tokio-stream v0.1.14
[INFO] [stderr]     Checking quinn v0.10.2
[INFO] [stderr]     Checking serde_json v1.0.113
[INFO] [stderr]     Checking uuid v1.7.0
[INFO] [stderr]  Documenting snocat v0.8.0-alpha.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(generic_associated_types)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `generic_associated_types` has been stable since `1.65.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(trait_alias)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(try_blocks)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(type_alias_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(type_ascription)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `snocat`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type rlib --crate-type cdylib --crate-name snocat src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="core"' --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=be43eee0ef09c257 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-d4cbb8ebf8c675b1.rmeta --extern arc_swap=/opt/rustwide/target/debug/deps/libarc_swap-781196434d79f02a.rmeta --extern dashmap=/opt/rustwide/target/debug/deps/libdashmap-8bcd4cb2c6a33788.rmeta --extern downcast_rs=/opt/rustwide/target/debug/deps/libdowncast_rs-225626a0da4e20c6.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-de1162a0e68cd55e.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-7fe0807640814e58.rmeta --extern pin_project_lite=/opt/rustwide/target/debug/deps/libpin_project_lite-5eb199335100c939.rmeta --extern quinn=/opt/rustwide/target/debug/deps/libquinn-61b409b4edd5ad6b.rmeta --extern rustls=/opt/rustwide/target/debug/deps/librustls-decf22db7f6baf84.rmeta --extern rustls_pemfile=/opt/rustwide/target/debug/deps/librustls_pemfile-ad99d5c44dd5f1b8.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-8396dc9ea69b5bd8.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-b6d49362329dcd3a.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-dcf0fd01c16be1f3.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-8366331c247daf07.rmeta --extern tokio_stream=/opt/rustwide/target/debug/deps/libtokio_stream-557dabca724a96f2.rmeta --extern tokio_util=/opt/rustwide/target/debug/deps/libtokio_util-a1820612459ced42.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-caf195aa0f55122f.rmeta --extern tracing_futures=/opt/rustwide/target/debug/deps/libtracing_futures-b20e48b2132b5ebc.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-0321bfd50e12e751.rmeta --cap-lints=warn --crate-version 0.8.0-alpha.5` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "9e968c9aeb98cc5e797a5ebaf63379d75d0e9240f094cefd35ef88ef22830f9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e968c9aeb98cc5e797a5ebaf63379d75d0e9240f094cefd35ef88ef22830f9c", kill_on_drop: false }`
[INFO] [stdout] 9e968c9aeb98cc5e797a5ebaf63379d75d0e9240f094cefd35ef88ef22830f9c
