[INFO] cloning repository https://github.com/busarovalex/mp3-meta [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/busarovalex/mp3-meta" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbusarovalex%2Fmp3-meta", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbusarovalex%2Fmp3-meta'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] dc2f9188c6fba277153926f265aebfd61e5a7f37 [INFO] documenting busarovalex/mp3-meta against beta-2020-08-29 for beta-1.47-rustdoc-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbusarovalex%2Fmp3-meta" "/workspace/builds/worker-13/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/busarovalex/mp3-meta on toolchain beta-2020-08-29 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/busarovalex/mp3-meta [INFO] finished tweaking git repo https://github.com/busarovalex/mp3-meta [INFO] tweaked toml for git repo https://github.com/busarovalex/mp3-meta written to /workspace/builds/worker-13/source/Cargo.toml [INFO] crate git repo https://github.com/busarovalex/mp3-meta already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating git repository `https://github.com/jameshurst/rust-id3.git` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded encoding-index-tradchinese v1.20141219.5 [INFO] [stderr] Downloaded encoding-index-singlebyte v1.20141219.5 [INFO] [stderr] Downloaded textwrap v0.8.0 [INFO] [stderr] Downloaded encoding v0.2.33 [INFO] [stderr] Downloaded miniz-sys v0.1.10 [INFO] [stderr] Downloaded regex-syntax v0.4.1 [INFO] [stderr] Downloaded byteorder v1.0.0 [INFO] [stderr] Downloaded encoding-index-japanese v1.20141219.5 [INFO] [stderr] Downloaded regex v0.2.2 [INFO] [stderr] Downloaded thread_local v0.3.4 [INFO] [stderr] Downloaded derive_builder_core v0.1.7 [INFO] [stderr] Downloaded encoding-index-korean v1.20141219.5 [INFO] [stderr] Downloaded encoding-index-simpchinese v1.20141219.5 [INFO] [stderr] Downloaded cc v1.0.1 [INFO] [stderr] Downloaded encoding_index_tests v0.1.4 [INFO] [stderr] Downloaded aho-corasick v0.6.3 [INFO] [stderr] Downloaded libc v0.2.31 [INFO] [stderr] Downloaded clap v2.26.2 [INFO] [stderr] Downloaded atty v0.2.2 [INFO] [stderr] Downloaded term_size v0.3.0 [INFO] [stderr] Downloaded derive_builder v0.4.7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] da30fab4a6d9fbec0b48ae4fbca9d85818cd5210e315ae0d31cdfc1aeb5e5581 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "da30fab4a6d9fbec0b48ae4fbca9d85818cd5210e315ae0d31cdfc1aeb5e5581", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "da30fab4a6d9fbec0b48ae4fbca9d85818cd5210e315ae0d31cdfc1aeb5e5581", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "da30fab4a6d9fbec0b48ae4fbca9d85818cd5210e315ae0d31cdfc1aeb5e5581", kill_on_drop: false }` [INFO] [stdout] da30fab4a6d9fbec0b48ae4fbca9d85818cd5210e315ae0d31cdfc1aeb5e5581 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] aedc35e1dafb07f99926a06a15a5c1fb56fa248acc8d8abef15b920f2f6034ec [INFO] running `Command { std: "docker" "start" "-a" "aedc35e1dafb07f99926a06a15a5c1fb56fa248acc8d8abef15b920f2f6034ec", 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] Compiling derive_builder v0.4.7 [INFO] [stderr] Compiling miniz-sys v0.1.10 [INFO] [stderr] Checking memchr v1.0.1 [INFO] [stderr] Compiling derive_builder_core v0.1.7 [INFO] [stderr] Checking aho-corasick v0.6.3 [INFO] [stderr] Checking regex v0.2.2 [INFO] [stderr] Checking flate2 v0.2.20 [INFO] [stderr] Checking id3 v0.2.1 (https://github.com/jameshurst/rust-id3.git?rev=21ebef8706dd5f2b1bf6b05cc87ded3b20d54dcd#21ebef87) [INFO] [stderr] Documenting mp3meta v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> src/main.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(iterator_for_each)] [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 `mp3meta`. [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustdoc --crate-type bin --crate-name mp3meta 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-8c0ccea11a80b886.rmeta --extern encoding=/opt/rustwide/target/debug/deps/libencoding-8bea360b97c8d5af.rmeta --extern id3=/opt/rustwide/target/debug/deps/libid3-bdb40447eca67799.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1) [INFO] running `Command { std: "docker" "inspect" "aedc35e1dafb07f99926a06a15a5c1fb56fa248acc8d8abef15b920f2f6034ec", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aedc35e1dafb07f99926a06a15a5c1fb56fa248acc8d8abef15b920f2f6034ec", kill_on_drop: false }` [INFO] [stdout] aedc35e1dafb07f99926a06a15a5c1fb56fa248acc8d8abef15b920f2f6034ec