[INFO] cloning repository https://github.com/lark-exploration/lark [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lark-exploration/lark" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flark-exploration%2Flark", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flark-exploration%2Flark'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 87d1e42107ced29f5ef23b70ef66e3b6fa2e74de [INFO] documenting lark-exploration/lark against 1.46.0 for beta-1.47-rustdoc-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flark-exploration%2Flark" "/workspace/builds/worker-5/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/lark-exploration/lark on toolchain 1.46.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/lark-exploration/lark [INFO] removed workspace from git repo https://github.com/lark-exploration/lark [INFO] removed path dependency lark-cli from git repo https://github.com/lark-exploration/lark [INFO] removed path dependency lark-debug-derive from git repo https://github.com/lark-exploration/lark [INFO] removed path dependency lark-debug-with from git repo https://github.com/lark-exploration/lark [INFO] removed path dependency lark-entity from git repo https://github.com/lark-exploration/lark [INFO] removed path dependency lark-hir from git repo https://github.com/lark-exploration/lark [INFO] removed path dependency lark-intern from git repo https://github.com/lark-exploration/lark [INFO] removed path dependency lark-language-server from git repo https://github.com/lark-exploration/lark [INFO] removed path dependency lark-parser from git repo https://github.com/lark-exploration/lark [INFO] removed path dependency lark-query-system from git repo https://github.com/lark-exploration/lark [INFO] removed path dependency lark-span from git repo https://github.com/lark-exploration/lark [INFO] removed path dependency lark-string from git repo https://github.com/lark-exploration/lark [INFO] removed path dependency lark-test from git repo https://github.com/lark-exploration/lark [INFO] removed path dependency lark-test-generate from git repo https://github.com/lark-exploration/lark [INFO] finished tweaking git repo https://github.com/lark-exploration/lark [INFO] tweaked toml for git repo https://github.com/lark-exploration/lark written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/lark-exploration/lark already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] error: the lock file /workspace/builds/worker-5/source/Cargo.lock needs to be updated but --locked was passed to prevent this [INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag. [INFO] the lockfile is outdated, regenerating it [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 012646c3ed53953dbe63b3632d43603b47a0f55eb2839790bbce7dcf55f0832f [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" "012646c3ed53953dbe63b3632d43603b47a0f55eb2839790bbce7dcf55f0832f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "012646c3ed53953dbe63b3632d43603b47a0f55eb2839790bbce7dcf55f0832f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "012646c3ed53953dbe63b3632d43603b47a0f55eb2839790bbce7dcf55f0832f", kill_on_drop: false }` [INFO] [stdout] 012646c3ed53953dbe63b3632d43603b47a0f55eb2839790bbce7dcf55f0832f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.46.0" "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] 6f29e0aada445742369afc0a4e8d72c913673dc18ff735a635c6018f85f8d4ac [INFO] running `Command { std: "docker" "start" "-a" "6f29e0aada445742369afc0a4e8d72c913673dc18ff735a635c6018f85f8d4ac", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling libc v0.2.76 [INFO] [stderr] Compiling proc-macro2 v1.0.20 [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling syn v1.0.39 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling serde_derive v1.0.115 [INFO] [stderr] Compiling serde v1.0.115 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Checking matches v0.1.8 [INFO] [stderr] Checking tinyvec v0.3.4 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Compiling serde_json v1.0.57 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking rustc-hash v1.1.0 [INFO] [stderr] Compiling num-derive v0.2.5 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Checking percent-encoding v1.0.1 [INFO] [stderr] Checking either v1.6.0 [INFO] [stderr] Checking itoa v0.4.6 [INFO] [stderr] Checking termcolor v1.1.0 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Checking datafrog v2.0.1 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking regex-syntax v0.6.18 [INFO] [stderr] Checking cc v1.0.59 [INFO] [stderr] Checking glob v0.2.11 [INFO] [stderr] Checking unicode-bidi v0.3.4 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking generational-arena v0.2.8 [INFO] [stderr] Checking unicode-normalization v0.1.13 [INFO] [stderr] Checking owning_ref v0.4.1 [INFO] [stderr] Checking itertools v0.7.11 [INFO] [stderr] Checking itertools v0.8.2 [INFO] [stderr] Checking thread_local v1.0.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking lock_api v0.1.5 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking smallvec v0.6.13 [INFO] [stderr] Checking render-tree v0.1.1 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking aho-corasick v0.7.13 [INFO] [stderr] Checking idna v0.1.5 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Compiling hashbrown v0.8.2 [INFO] [stderr] Compiling indexmap v1.5.2 [INFO] [stderr] Compiling num-traits v0.2.12 [INFO] [stderr] Compiling num-integer v0.1.43 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking time v0.1.44 [INFO] [stderr] Checking url v1.7.2 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Checking regex v1.3.9 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking tempfile v2.2.0 [INFO] [stderr] Checking lark-debug-with v0.1.0 [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lark-debug-with-0.1.0/src/lib.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 6 | #![feature(box_patterns)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lark-debug-with-0.1.0/src/lib.rs:7:1 [INFO] [stdout] | [INFO] [stdout] 7 | #![feature(never_type)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lark-debug-with-0.1.0/src/lib.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | #![feature(in_band_lifetimes)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lark-debug-with-0.1.0/src/lib.rs:9:1 [INFO] [stdout] | [INFO] [stdout] 9 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [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 compile `lark-debug-with`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "6f29e0aada445742369afc0a4e8d72c913673dc18ff735a635c6018f85f8d4ac", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6f29e0aada445742369afc0a4e8d72c913673dc18ff735a635c6018f85f8d4ac", kill_on_drop: false }` [INFO] [stdout] 6f29e0aada445742369afc0a4e8d72c913673dc18ff735a635c6018f85f8d4ac