[INFO] cloning repository https://github.com/K-atc/libfuzzer-mutation-graph-tool
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/K-atc/libfuzzer-mutation-graph-tool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FK-atc%2Flibfuzzer-mutation-graph-tool", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FK-atc%2Flibfuzzer-mutation-graph-tool'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5d1e0cdadb4031452020cb741bcf0e565424be02
[INFO] documenting K-atc/libfuzzer-mutation-graph-tool against 1.69.0 for beta-1.70-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FK-atc%2Flibfuzzer-mutation-graph-tool" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/K-atc/libfuzzer-mutation-graph-tool on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/K-atc/libfuzzer-mutation-graph-tool
[INFO] finished tweaking git repo https://github.com/K-atc/libfuzzer-mutation-graph-tool
[INFO] tweaked toml for git repo https://github.com/K-atc/libfuzzer-mutation-graph-tool written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/K-atc/libfuzzer-mutation-graph-tool 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" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/K-atc/binary-diff-rs.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bcmp v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9b43f069366fd82651eec36d478c5ca4b6f024733337d167073a6084c0e4fe86
[INFO] running `Command { std: "docker" "start" "-a" "9b43f069366fd82651eec36d478c5ca4b6f024733337d167073a6084c0e4fe86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b43f069366fd82651eec36d478c5ca4b6f024733337d167073a6084c0e4fe86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b43f069366fd82651eec36d478c5ca4b6f024733337d167073a6084c0e4fe86", kill_on_drop: false }`
[INFO] [stdout] 9b43f069366fd82651eec36d478c5ca4b6f024733337d167073a6084c0e4fe86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4279c4d4ed6057298f0165ba2b2d4cd48d87c8c888c7b2ea00d745fcca17a81b
[INFO] running `Command { std: "docker" "start" "-a" "4279c4d4ed6057298f0165ba2b2d4cd48d87c8c888c7b2ea00d745fcca17a81b", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking cpufeatures v0.2.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking base16ct v0.1.1
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling bytepack_derive v0.2.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking bytepack v0.4.1
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.2
[INFO] [stderr]     Checking bcmp v0.4.1
[INFO] [stderr]     Checking digest v0.10.3
[INFO] [stderr]     Checking binary-diff v0.1.0 (https://github.com/K-atc/binary-diff-rs.git#18b0db7f)
[INFO] [stderr]     Checking sha-1 v0.10.0
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]  Documenting seed-tree-analyzer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/cli_afl.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(binary_heap_into_iter_sorted)]
[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 `seed-tree-analyzer`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name seed_tree_analyzer_afl src/cli_afl.rs -o /opt/rustwide/target/doc --cfg 'feature="afl"' --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=9da69d00c1245bc3 -L dependency=/opt/rustwide/target/debug/deps --extern base16ct=/opt/rustwide/target/debug/deps/libbase16ct-f008fd903c4ea770.rmeta --extern binary_diff=/opt/rustwide/target/debug/deps/libbinary_diff-eda4547fbdd220a1.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-e2e0cfa3dc16a902.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-8309a761ecdf5dff.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-cfdf503dbcd0d4be.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-d70ed253e4147aa3.rmeta --extern sha1=/opt/rustwide/target/debug/deps/libsha1-d8bb59a3b2b4bee8.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "4279c4d4ed6057298f0165ba2b2d4cd48d87c8c888c7b2ea00d745fcca17a81b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4279c4d4ed6057298f0165ba2b2d4cd48d87c8c888c7b2ea00d745fcca17a81b", kill_on_drop: false }`
[INFO] [stdout] 4279c4d4ed6057298f0165ba2b2d4cd48d87c8c888c7b2ea00d745fcca17a81b
