[INFO] cloning repository https://github.com/djdisodo/chipcalc_native_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/djdisodo/chipcalc_native_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjdisodo%2Fchipcalc_native_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjdisodo%2Fchipcalc_native_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 06f79c33f820eecd4513fca2699621d0838cd387
[INFO] documenting djdisodo/chipcalc_native_rust against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjdisodo%2Fchipcalc_native_rust" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/djdisodo/chipcalc_native_rust on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/djdisodo/chipcalc_native_rust
[INFO] finished tweaking git repo https://github.com/djdisodo/chipcalc_native_rust
[INFO] tweaked toml for git repo https://github.com/djdisodo/chipcalc_native_rust written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/djdisodo/chipcalc_native_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89cbc5017c5888169557fcbe80107f61f705536902c30a2659d722990159fd51
[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" "89cbc5017c5888169557fcbe80107f61f705536902c30a2659d722990159fd51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89cbc5017c5888169557fcbe80107f61f705536902c30a2659d722990159fd51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89cbc5017c5888169557fcbe80107f61f705536902c30a2659d722990159fd51", kill_on_drop: false }`
[INFO] [stdout] 89cbc5017c5888169557fcbe80107f61f705536902c30a2659d722990159fd51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0194a4d4e845bb8d274db747ef5850d22ab5306c1dd71f9e3fbbe37fc6ea472f
[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" "0194a4d4e845bb8d274db747ef5850d22ab5306c1dd71f9e3fbbe37fc6ea472f", 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]     Checking bit_reverse v0.1.8
[INFO] [stderr]     Checking strum v0.19.5
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking num-complex v0.3.0
[INFO] [stderr]     Checking num v0.3.0
[INFO] [stderr]    Compiling enum-iterator-derive v0.6.0
[INFO] [stderr]    Compiling strum_macros v0.19.4
[INFO] [stderr]     Checking enum-iterator v0.6.0
[INFO] [stderr]  Documenting chipcalc_native_rust 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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(fn_traits)]
[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 `chipcalc_native_rust`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name chipcalc_native_rust 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 bit_reverse=/opt/rustwide/target/debug/deps/libbit_reverse-eadd3724e6bbd24e.rmeta --extern enum_iterator=/opt/rustwide/target/debug/deps/libenum_iterator-4471a86fe47a27dd.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-72923b2d9aa06af7.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-24a3f1d25c45357f.rmeta --extern num_derive=/opt/rustwide/target/debug/deps/libnum_derive-2a74970208a63142.so --extern num_rational=/opt/rustwide/target/debug/deps/libnum_rational-87c58750f3580138.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-4e16a00f90cecb20.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-fe137091c0997de1.rmeta --extern strum=/opt/rustwide/target/debug/deps/libstrum-a97970949401779e.rmeta --extern strum_macros=/opt/rustwide/target/debug/deps/libstrum_macros-b38ae47d4be31bfe.so --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "0194a4d4e845bb8d274db747ef5850d22ab5306c1dd71f9e3fbbe37fc6ea472f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0194a4d4e845bb8d274db747ef5850d22ab5306c1dd71f9e3fbbe37fc6ea472f", kill_on_drop: false }`
[INFO] [stdout] 0194a4d4e845bb8d274db747ef5850d22ab5306c1dd71f9e3fbbe37fc6ea472f
