[INFO] fetching crate exprz 0.0.15...
[INFO] documenting exprz-0.0.15 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate exprz 0.0.15 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate exprz 0.0.15 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 exprz 0.0.15
[INFO] finished tweaking crates.io crate exprz 0.0.15
[INFO] tweaked toml for crates.io crate exprz 0.0.15 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 6e740376c9c0fafa8b0e5caaad4536ba0f82ed198193be7d3c4eabb043f6394e
[INFO] running `Command { std: "docker" "start" "-a" "6e740376c9c0fafa8b0e5caaad4536ba0f82ed198193be7d3c4eabb043f6394e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e740376c9c0fafa8b0e5caaad4536ba0f82ed198193be7d3c4eabb043f6394e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e740376c9c0fafa8b0e5caaad4536ba0f82ed198193be7d3c4eabb043f6394e", kill_on_drop: false }`
[INFO] [stdout] 6e740376c9c0fafa8b0e5caaad4536ba0f82ed198193be7d3c4eabb043f6394e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 2367510d94ab23d7440c469ec22bcd91bf0a7aeae2f16ed9aebc08c122e88af0
[INFO] running `Command { std: "docker" "start" "-a" "2367510d94ab23d7440c469ec22bcd91bf0a7aeae2f16ed9aebc08c122e88af0", kill_on_drop: false }`
[INFO] [stderr]  Documenting exprz v0.0.15 (/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: missing required bound on `Iter`
[INFO] [stdout]    --> src/lib.rs:161:5
[INFO] [stdout]     |
[INFO] [stdout] 161 | /     type Iter<'e>: Iterator<Item = Self::Item<'e>>
[INFO] [stdout] 162 | |     where
[INFO] [stdout] 163 | |         E: 'e;
[INFO] [stdout]     | |              ^
[INFO] [stdout]     | |              |
[INFO] [stdout]     | |______________help: add the required where clause: `, Self: 'e`
[INFO] [stdout]     | 
[INFO] [stdout]     |
[INFO] [stdout]     = note: this bound is currently required to ensure that impls have maximum flexibility
[INFO] [stdout]     = note: we are soliciting feedback, see issue #87479 <https://github.com/rust-lang/rust/issues/87479> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: missing required bound on `Item`
[INFO] [stdout]    --> src/lib.rs:156:5
[INFO] [stdout]     |
[INFO] [stdout] 156 | /     type Item<'e>: Reference<'e, E>
[INFO] [stdout] 157 | |     where
[INFO] [stdout] 158 | |         E: 'e;
[INFO] [stdout]     | |              ^
[INFO] [stdout]     | |              |
[INFO] [stdout]     | |______________help: add the required where clause: `, Self: 'e`
[INFO] [stdout]     | 
[INFO] [stdout]     |
[INFO] [stdout]     = note: this bound is currently required to ensure that impls have maximum flexibility
[INFO] [stdout]     = note: we are soliciting feedback, see issue #87479 <https://github.com/rust-lang/rust/issues/87479> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: missing required bound on `Ref`
[INFO] [stdout]    --> src/lib.rs:262:5
[INFO] [stdout]     |
[INFO] [stdout] 262 | /     type Ref<'e>: GroupReference<E>
[INFO] [stdout] 263 | |     where
[INFO] [stdout] 264 | |         E: 'e;
[INFO] [stdout]     | |              ^
[INFO] [stdout]     | |              |
[INFO] [stdout]     | |______________help: add the required where clause: `, Self: 'e`
[INFO] [stdout]     | 
[INFO] [stdout]     |
[INFO] [stdout]     = note: this bound is currently required to ensure that impls have maximum flexibility
[INFO] [stdout]     = note: we are soliciting feedback, see issue #87479 <https://github.com/rust-lang/rust/issues/87479> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 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 `exprz`
[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=2018 --crate-type lib --crate-name exprz src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=4b11402d81e3e4c3 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.0.15` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "2367510d94ab23d7440c469ec22bcd91bf0a7aeae2f16ed9aebc08c122e88af0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2367510d94ab23d7440c469ec22bcd91bf0a7aeae2f16ed9aebc08c122e88af0", kill_on_drop: false }`
[INFO] [stdout] 2367510d94ab23d7440c469ec22bcd91bf0a7aeae2f16ed9aebc08c122e88af0
