[INFO] fetching crate loadstone_config 1.0.0...
[INFO] documenting loadstone_config-1.0.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate loadstone_config 1.0.0 into /workspace/builds/worker-104/source
[INFO] validating manifest of crates.io crate loadstone_config 1.0.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate loadstone_config 1.0.0
[INFO] finished tweaking crates.io crate loadstone_config 1.0.0
[INFO] tweaked toml for crates.io crate loadstone_config 1.0.0 written to /workspace/builds/worker-104/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d0d38019b70cac10ccfa60f5d9c68eb38997468e62d4378dd11df41151d7745
[INFO] running `Command { std: "docker" "start" "-a" "2d0d38019b70cac10ccfa60f5d9c68eb38997468e62d4378dd11df41151d7745", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d0d38019b70cac10ccfa60f5d9c68eb38997468e62d4378dd11df41151d7745", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d0d38019b70cac10ccfa60f5d9c68eb38997468e62d4378dd11df41151d7745", kill_on_drop: false }`
[INFO] [stdout] 2d0d38019b70cac10ccfa60f5d9c68eb38997468e62d4378dd11df41151d7745
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/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" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] abcae05c780dc1f8b7836d5fbfd164073b39d556e5eb382a0dd6cb5049a75501
[INFO] running `Command { std: "docker" "start" "-a" "abcae05c780dc1f8b7836d5fbfd164073b39d556e5eb382a0dd6cb5049a75501", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]     Checking const-oid v0.5.2
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking zeroize v1.4.1
[INFO] [stderr]     Checking base64ct v1.0.0
[INFO] [stderr]     Checking cpufeatures v0.1.5
[INFO] [stderr]    Compiling anyhow v1.0.42
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking bitvec v0.20.4
[INFO] [stderr]     Checking der v0.3.5
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.11.1
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking hmac v0.11.0
[INFO] [stderr]     Checking signature v1.3.1
[INFO] [stderr]     Checking sha2 v0.9.5
[INFO] [stderr]     Checking spki v0.3.0
[INFO] [stderr]     Checking pkcs8 v0.6.1
[INFO] [stderr]     Checking ff v0.9.0
[INFO] [stderr]     Checking group v0.9.0
[INFO] [stderr]     Checking elliptic-curve v0.9.12
[INFO] [stderr]     Checking ecdsa v0.11.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling enum-iterator-derive v0.6.0
[INFO] [stderr]     Checking p256 v0.8.1
[INFO] [stderr]     Checking enum-iterator v0.6.0
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking tightness v1.0.1
[INFO] [stderr]     Checking serde v1.0.127
[INFO] [stderr]  Documenting loadstone_config v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(stmt_expr_attributes)]
[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:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(bool_to_option)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `loadstone_config`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name loadstone_config 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 anyhow=/opt/rustwide/target/debug/deps/libanyhow-c71486e08dde7454.rmeta --extern ecdsa=/opt/rustwide/target/debug/deps/libecdsa-561ca946041e3bd6.rmeta --extern enum_iterator=/opt/rustwide/target/debug/deps/libenum_iterator-981f12b3a9b78b1e.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-74a9ecb2cbac341a.rmeta --extern p256=/opt/rustwide/target/debug/deps/libp256-d969f09e28137997.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-dc7cbb122f009b6c.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-5dad70bcfe3e34b0.rmeta --extern sha2=/opt/rustwide/target/debug/deps/libsha2-72ced47ccec608d9.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-9e01133202d890c3.rmeta --extern tightness=/opt/rustwide/target/debug/deps/libtightness-958c06468d61471e.rmeta --cap-lints=warn --crate-version 1.0.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "abcae05c780dc1f8b7836d5fbfd164073b39d556e5eb382a0dd6cb5049a75501", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abcae05c780dc1f8b7836d5fbfd164073b39d556e5eb382a0dd6cb5049a75501", kill_on_drop: false }`
[INFO] [stdout] abcae05c780dc1f8b7836d5fbfd164073b39d556e5eb382a0dd6cb5049a75501
