[INFO] cloning repository https://github.com/dragonrider7225/java_class_manipulation
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dragonrider7225/java_class_manipulation" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdragonrider7225%2Fjava_class_manipulation", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdragonrider7225%2Fjava_class_manipulation'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 32be1e103355a495717cb53368f1d93bf237a6b6
[INFO] documenting dragonrider7225/java_class_manipulation against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdragonrider7225%2Fjava_class_manipulation" "/workspace/builds/worker-30/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-30/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dragonrider7225/java_class_manipulation on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-30/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/dragonrider7225/java_class_manipulation
[INFO] finished tweaking git repo https://github.com/dragonrider7225/java_class_manipulation
[INFO] tweaked toml for git repo https://github.com/dragonrider7225/java_class_manipulation written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] crate git repo https://github.com/dragonrider7225/java_class_manipulation already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/dragonrider7225/extended_io.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nom v7.0.0
[INFO] [stderr]   Downloaded minimal-lexical v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 73c6c646577e0df0c3b8c99491e29ee0a5d28143978607718806de18e56b4e79
[INFO] running `Command { std: "docker" "start" "-a" "73c6c646577e0df0c3b8c99491e29ee0a5d28143978607718806de18e56b4e79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73c6c646577e0df0c3b8c99491e29ee0a5d28143978607718806de18e56b4e79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73c6c646577e0df0c3b8c99491e29ee0a5d28143978607718806de18e56b4e79", kill_on_drop: false }`
[INFO] [stdout] 73c6c646577e0df0c3b8c99491e29ee0a5d28143978607718806de18e56b4e79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0393d68bd3e3976b117ece7e4f2e9e7c4ae936185d351938eaa67bbf9ec5408c
[INFO] running `Command { std: "docker" "start" "-a" "0393d68bd3e3976b117ece7e4f2e9e7c4ae936185d351938eaa67bbf9ec5408c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling serde v1.0.129
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling minimal-lexical v0.1.2
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking extended_io v0.3.0 (https://github.com/dragonrider7225/extended_io.git#488b960c)
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling nom v7.0.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling proc-macro-crate v1.0.0
[INFO] [stderr]    Compiling num_enum_derive v0.5.4
[INFO] [stderr]     Checking num_enum v0.5.4
[INFO] [stderr]  Documenting java_class_manipulation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(associated_type_defaults)]
[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:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(box_patterns, box_syntax)]
[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 `java_class_manipulation`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name java_class_manipulation src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=fbb6732da42cf9ea -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-4521b8981504d56d.rmeta --extern extended_io=/opt/rustwide/target/debug/deps/libextended_io-095f38767ac1d932.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-f1d446130b831bf7.rmeta --extern num_enum=/opt/rustwide/target/debug/deps/libnum_enum-7f2eafccb4283e38.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "0393d68bd3e3976b117ece7e4f2e9e7c4ae936185d351938eaa67bbf9ec5408c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0393d68bd3e3976b117ece7e4f2e9e7c4ae936185d351938eaa67bbf9ec5408c", kill_on_drop: false }`
[INFO] [stdout] 0393d68bd3e3976b117ece7e4f2e9e7c4ae936185d351938eaa67bbf9ec5408c