[INFO] cloning repository https://github.com/ThatsGobbles/taggu-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ThatsGobbles/taggu-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThatsGobbles%2Ftaggu-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThatsGobbles%2Ftaggu-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5a400888540da38362bbec2a1a450916aea5024d [INFO] documenting ThatsGobbles/taggu-rust 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%2FThatsGobbles%2Ftaggu-rust" "/workspace/builds/worker-32/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-32/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ThatsGobbles/taggu-rust 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] started tweaking git repo https://github.com/ThatsGobbles/taggu-rust [INFO] finished tweaking git repo https://github.com/ThatsGobbles/taggu-rust [INFO] tweaked toml for git repo https://github.com/ThatsGobbles/taggu-rust written to /workspace/builds/worker-32/source/Cargo.toml [INFO] crate git repo https://github.com/ThatsGobbles/taggu-rust 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] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded linked-hash-map v0.5.0 [INFO] [stderr] Downloaded maplit v1.0.0 [INFO] [stderr] Downloaded error-chain v0.12.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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] 8a1c21d9beaf4972b79eb501ee1ffa0cea61a57c8e47306bc9251e1c2a08fe29 [INFO] running `Command { std: "docker" "start" "-a" "8a1c21d9beaf4972b79eb501ee1ffa0cea61a57c8e47306bc9251e1c2a08fe29", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8a1c21d9beaf4972b79eb501ee1ffa0cea61a57c8e47306bc9251e1c2a08fe29", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8a1c21d9beaf4972b79eb501ee1ffa0cea61a57c8e47306bc9251e1c2a08fe29", kill_on_drop: false }` [INFO] [stdout] 8a1c21d9beaf4972b79eb501ee1ffa0cea61a57c8e47306bc9251e1c2a08fe29 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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] 97d29468eaf9fe7f8418db63445ae4250a0b7d64e734140c8f73a1b4c9b6e6f2 [INFO] running `Command { std: "docker" "start" "-a" "97d29468eaf9fe7f8418db63445ae4250a0b7d64e734140c8f73a1b4c9b6e6f2", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.34 [INFO] [stderr] Compiling cc v1.0.3 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking lazy_static v1.0.0 [INFO] [stderr] Checking utf8-ranges v1.0.0 [INFO] [stderr] Checking rustc-demangle v0.1.5 [INFO] [stderr] Checking cfg-if v0.1.2 [INFO] [stderr] Checking regex-syntax v0.4.1 [INFO] [stderr] Checking log v0.3.8 [INFO] [stderr] Checking linked-hash-map v0.5.0 [INFO] [stderr] Checking maplit v1.0.0 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Checking yaml-rust v0.4.0 [INFO] [stderr] Checking thread_local v0.3.5 [INFO] [stderr] Checking memchr v2.0.1 [INFO] [stderr] Checking rand v0.3.18 [INFO] [stderr] Checking aho-corasick v0.6.4 [INFO] [stderr] Compiling backtrace-sys v0.1.16 [INFO] [stderr] Checking regex v0.2.3 [INFO] [stderr] Checking tempdir v0.3.5 [INFO] [stderr] Checking env_logger v0.4.3 [INFO] [stderr] Checking backtrace v0.3.4 [INFO] [stderr] Checking error-chain v0.12.0 [INFO] [stderr] Documenting taggu 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(generators, generator_trait)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/main.rs:2:1 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(type_ascription)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | #![feature(entry_or_default)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: Compilation failed, aborting rustdoc [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 4 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 `taggu` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustdoc --crate-type bin --crate-name taggu src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=50b7327bf42e3b6d -L dependency=/opt/rustwide/target/debug/deps --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-915cfb2b35025245.rmeta --extern error_chain=/opt/rustwide/target/debug/deps/liberror_chain-9d672ab988f60f02.rmeta --extern glob=/opt/rustwide/target/debug/deps/libglob-ade939e29ca477b5.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-31d53f89032b28f2.rmeta --extern maplit=/opt/rustwide/target/debug/deps/libmaplit-339d413a7c121325.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-e91a3ae94fb2c03c.rmeta --extern tempdir=/opt/rustwide/target/debug/deps/libtempdir-a356782ac9c34cd8.rmeta --extern yaml_rust=/opt/rustwide/target/debug/deps/libyaml_rust-ed57092a60001ab2.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1) [INFO] running `Command { std: "docker" "inspect" "97d29468eaf9fe7f8418db63445ae4250a0b7d64e734140c8f73a1b4c9b6e6f2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "97d29468eaf9fe7f8418db63445ae4250a0b7d64e734140c8f73a1b4c9b6e6f2", kill_on_drop: false }` [INFO] [stdout] 97d29468eaf9fe7f8418db63445ae4250a0b7d64e734140c8f73a1b4c9b6e6f2