[INFO] fetching crate rsgc 1.1.0...
[INFO] documenting rsgc-1.1.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate rsgc 1.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate rsgc 1.1.0 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 rsgc 1.1.0
[INFO] finished tweaking crates.io crate rsgc 1.1.0
[INFO] tweaked toml for crates.io crate rsgc 1.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate rsgc 1.1.0 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 variance v0.1.3
[INFO] [stderr]   Downloaded is-terminal v0.4.0
[INFO] [stderr]   Downloaded io-lifetimes v1.0.2
[INFO] [stderr]   Downloaded rustix v0.36.3
[INFO] [stderr]   Downloaded scoped-thread-pool v1.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 15fc212dc1d7a0a67c2e3ba1c89d9d7a90120a9df160950dd1360dd9f74631c2
[INFO] running `Command { std: "docker" "start" "-a" "15fc212dc1d7a0a67c2e3ba1c89d9d7a90120a9df160950dd1360dd9f74631c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15fc212dc1d7a0a67c2e3ba1c89d9d7a90120a9df160950dd1360dd9f74631c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15fc212dc1d7a0a67c2e3ba1c89d9d7a90120a9df160950dd1360dd9f74631c2", kill_on_drop: false }`
[INFO] [stdout] 15fc212dc1d7a0a67c2e3ba1c89d9d7a90120a9df160950dd1360dd9f74631c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e2431bf00df0e1a38f7d2519de91c6a53fd2aaa3782dfcf5bbd31cb5b09323e8
[INFO] running `Command { std: "docker" "start" "-a" "e2431bf00df0e1a38f7d2519de91c6a53fd2aaa3782dfcf5bbd31cb5b09323e8", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling io-lifetimes v1.0.2
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling rustix v0.36.3
[INFO] [stderr]    Compiling crossbeam-queue v0.3.8
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking linux-raw-sys v0.1.3
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling atomic v0.5.1
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking variance v0.1.3
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking once_cell v1.16.0
[INFO] [stderr]     Checking str-buf v1.0.6
[INFO] [stderr]    Compiling paste v1.0.9
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking crossbeam v0.8.2
[INFO] [stderr]     Checking scoped-thread-pool v1.0.3
[INFO] [stderr]     Checking regex v1.7.0
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking errno v0.3.0
[INFO] [stderr]     Checking error-code v2.3.1
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking is-terminal v0.4.0
[INFO] [stderr]     Checking env_logger v0.10.0
[INFO] [stderr]  Documenting rsgc v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | / #![feature(
[INFO] [stdout] 17 | |     const_type_id,
[INFO] [stdout] 18 | |     const_refs_to_cell,
[INFO] [stdout] 19 | |     const_type_name,
[INFO] [stdout] ...  |
[INFO] [stdout] 27 | |     arbitrary_self_types
[INFO] [stdout] 28 | | )]
[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 `rsgc`
[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 cdylib --crate-type rlib --crate-type staticlib --crate-name rsgc src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="gc-satb"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=4a4c6dec52aab90f -L dependency=/opt/rustwide/target/debug/deps --extern atomic=/opt/rustwide/target/debug/deps/libatomic-e42f1e8bb376f2b1.rmeta --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-1b06147f67f93fdc.rmeta --extern crossbeam_deque=/opt/rustwide/target/debug/deps/libcrossbeam_deque-700bdb8c8f170352.rmeta --extern crossbeam_queue=/opt/rustwide/target/debug/deps/libcrossbeam_queue-cdb28e21cedd3f9c.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-a873c7e1d03a4ef7.rmeta --extern errno=/opt/rustwide/target/debug/deps/liberrno-9e5cc0a80d7cc1b0.rmeta --extern error_code=/opt/rustwide/target/debug/deps/liberror_code-b3eda96fb25cab6e.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-25211694acf92db3.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-db3182d8979d3809.rmeta --extern memoffset=/opt/rustwide/target/debug/deps/libmemoffset-1c2b07fe272560c6.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-6e6d03c61507ed6a.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-98e0b7744843efae.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-f81204a93ac494ee.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-3222ecccfa12be1d.rmeta --extern parking_lot_core=/opt/rustwide/target/debug/deps/libparking_lot_core-93f227e04a40fe16.rmeta --extern paste=/opt/rustwide/target/debug/deps/libpaste-edd7ce28a2ea6208.so --extern rand=/opt/rustwide/target/debug/deps/librand-03070dd2ffc1a5cd.rmeta --extern scoped_thread_pool=/opt/rustwide/target/debug/deps/libscoped_thread_pool-45018ca0e8780832.rmeta --extern thread_local=/opt/rustwide/target/debug/deps/libthread_local-bd9b52f9488178c8.rmeta --cap-lints=warn --crate-version 1.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e2431bf00df0e1a38f7d2519de91c6a53fd2aaa3782dfcf5bbd31cb5b09323e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2431bf00df0e1a38f7d2519de91c6a53fd2aaa3782dfcf5bbd31cb5b09323e8", kill_on_drop: false }`
[INFO] [stdout] e2431bf00df0e1a38f7d2519de91c6a53fd2aaa3782dfcf5bbd31cb5b09323e8
