[INFO] cloning repository https://github.com/rookie1024/Spin
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rookie1024/Spin" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frookie1024%2FSpin", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frookie1024%2FSpin'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 31597733f79cf0b07d82812821b4105ee2b79108
[INFO] documenting rookie1024/Spin against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frookie1024%2FSpin" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rookie1024/Spin 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 git repo https://github.com/rookie1024/Spin
[INFO] finished tweaking git repo https://github.com/rookie1024/Spin
[INFO] tweaked toml for git repo https://github.com/rookie1024/Spin written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/rookie1024/Spin already has a lockfile, it will not be regenerated
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] ac67a1d8fc9ed022273b9cd279010f8c2f04957c1e467d77bf342393f09e6cb3
[INFO] running `Command { std: "docker" "start" "-a" "ac67a1d8fc9ed022273b9cd279010f8c2f04957c1e467d77bf342393f09e6cb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac67a1d8fc9ed022273b9cd279010f8c2f04957c1e467d77bf342393f09e6cb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac67a1d8fc9ed022273b9cd279010f8c2f04957c1e467d77bf342393f09e6cb3", kill_on_drop: false }`
[INFO] [stdout] ac67a1d8fc9ed022273b9cd279010f8c2f04957c1e467d77bf342393f09e6cb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 719fcd7d260a5be348aee343c2fd61477ef2e114c8c2385bd42ec43e87fddb68
[INFO] running `Command { std: "docker" "start" "-a" "719fcd7d260a5be348aee343c2fd61477ef2e114c8c2385bd42ec43e87fddb68", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling byte-tools v0.3.0
[INFO] [stderr]    Compiling ucd-util v0.1.2
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling bit-vec v0.5.0
[INFO] [stderr]    Compiling opaque-debug v0.2.1
[INFO] [stderr]    Compiling diff v0.1.11
[INFO] [stderr]    Compiling lalrpop-util v0.16.1
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling quote v0.6.9
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling block-padding v0.1.2
[INFO] [stderr]     Checking itertools v0.7.8
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]    Compiling syn v0.15.18
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.1
[INFO] [stderr]    Compiling ascii-canvas v1.0.0
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling bit-set v0.5.0
[INFO] [stderr]    Compiling phf_shared v0.7.23
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling ena v0.10.1
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]    Compiling generic-array v0.12.0
[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]    Compiling block-buffer v0.7.0
[INFO] [stderr]    Compiling digest v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling docopt v1.0.2
[INFO] [stderr]    Compiling lalrpop v0.16.1
[INFO] [stderr]    Compiling spin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting spin 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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_from)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `spin`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name spin src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-3c2d5eb2429e100b.rmeta --extern error_chain=/opt/rustwide/target/debug/deps/liberror_chain-f715df795d368e11.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-2c7d15b347124efc.rmeta --extern lalrpop_util=/opt/rustwide/target/debug/deps/liblalrpop_util-bb067174a3c999ad.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-6cc3178366c92f7a.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-4970e0dae76e74b3.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "719fcd7d260a5be348aee343c2fd61477ef2e114c8c2385bd42ec43e87fddb68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "719fcd7d260a5be348aee343c2fd61477ef2e114c8c2385bd42ec43e87fddb68", kill_on_drop: false }`
[INFO] [stdout] 719fcd7d260a5be348aee343c2fd61477ef2e114c8c2385bd42ec43e87fddb68
