[INFO] cloning repository https://github.com/mental32/pnc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mental32/pnc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmental32%2Fpnc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmental32%2Fpnc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c1f7feaa49372fd0922512dd28e2e0847f06f841
[INFO] documenting mental32/pnc 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%2Fmental32%2Fpnc" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mental32/pnc 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/mental32/pnc
[INFO] finished tweaking git repo https://github.com/mental32/pnc
[INFO] tweaked toml for git repo https://github.com/mental32/pnc written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/mental32/pnc 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 84bd0af712f942c64b5ab15aada90927e9365d8f04721a1098a775aabcd93227
[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" "84bd0af712f942c64b5ab15aada90927e9365d8f04721a1098a775aabcd93227", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84bd0af712f942c64b5ab15aada90927e9365d8f04721a1098a775aabcd93227", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84bd0af712f942c64b5ab15aada90927e9365d8f04721a1098a775aabcd93227", kill_on_drop: false }`
[INFO] [stdout] 84bd0af712f942c64b5ab15aada90927e9365d8f04721a1098a775aabcd93227
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 58d5b87d92b494f8ca9343520b7cff99ee9b715fdcbf9aefbdaca1e847705c5d
[INFO] running `Command { std: "docker" "start" "-a" "58d5b87d92b494f8ca9343520b7cff99ee9b715fdcbf9aefbdaca1e847705c5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling target-lexicon v0.9.0
[INFO] [stderr]    Compiling cranelift-entity v0.52.0
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.52.0
[INFO] [stderr]    Compiling ucd-trie v0.1.2
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]     Checking backtrace-sys v0.1.32
[INFO] [stderr]     Checking string-interner v0.7.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling rustversion v1.0.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.9
[INFO] [stderr]    Compiling scroll_derive v0.10.1
[INFO] [stderr]    Compiling syn-mid v0.4.0
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking pest v2.1.2
[INFO] [stderr]     Checking cranelift-bforest v0.52.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.52.0
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking scroll v0.10.1
[INFO] [stderr]    Compiling proc-macro-error v0.4.4
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.3
[INFO] [stderr]    Compiling pest_meta v2.1.2
[INFO] [stderr]     Checking goblin v0.1.3
[INFO] [stderr]     Checking thiserror v1.0.9
[INFO] [stderr]    Compiling pest_generator v2.1.1
[INFO] [stderr]    Compiling structopt-derive v0.4.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking structopt v0.3.7
[INFO] [stderr]     Checking faerie v0.12.0
[INFO] [stderr]    Compiling cranelift-codegen v0.52.0
[INFO] [stderr]     Checking cranelift-module v0.52.0
[INFO] [stderr]     Checking cranelift-frontend v0.52.0
[INFO] [stderr]     Checking cranelift-faerie v0.52.0
[INFO] [stderr]  Documenting pnc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0412]: cannot find type `SymbolTable` in this scope
[INFO] [stdout]   --> src/codegen.rs:67:28
[INFO] [stdout]    |
[INFO] [stdout] 67 |     mut symbol_table: &mut SymbolTable, 
[INFO] [stdout]    |                            ^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(drain_filter)]
[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] Some errors have detailed explanations: E0412, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `pnc`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name pnc src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern cranelift_codegen=/opt/rustwide/target/debug/deps/libcranelift_codegen-50d4c9db31a10ca9.rmeta --extern cranelift_entity=/opt/rustwide/target/debug/deps/libcranelift_entity-1499986462cbe8f5.rmeta --extern cranelift_faerie=/opt/rustwide/target/debug/deps/libcranelift_faerie-31fde1294df8a30f.rmeta --extern cranelift_frontend=/opt/rustwide/target/debug/deps/libcranelift_frontend-aeb4107287dd6900.rmeta --extern cranelift_module=/opt/rustwide/target/debug/deps/libcranelift_module-56560f0f3ea7b718.rmeta --extern pest=/opt/rustwide/target/debug/deps/libpest-9e07783447d5175b.rmeta --extern pest_derive=/opt/rustwide/target/debug/deps/libpest_derive-bfb22a2220198496.so --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-cc0632fa26e0cae3.rmeta --extern target_lexicon=/opt/rustwide/target/debug/deps/libtarget_lexicon-9bca62b85836322b.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "58d5b87d92b494f8ca9343520b7cff99ee9b715fdcbf9aefbdaca1e847705c5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58d5b87d92b494f8ca9343520b7cff99ee9b715fdcbf9aefbdaca1e847705c5d", kill_on_drop: false }`
[INFO] [stdout] 58d5b87d92b494f8ca9343520b7cff99ee9b715fdcbf9aefbdaca1e847705c5d