[INFO] cloning repository https://github.com/kingeasternsun/leveldb-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kingeasternsun/leveldb-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkingeasternsun%2Fleveldb-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkingeasternsun%2Fleveldb-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b1cb71f92365259b2e6244d3263f53e7fb3f5706
[INFO] documenting kingeasternsun/leveldb-rs 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%2Fkingeasternsun%2Fleveldb-rs" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kingeasternsun/leveldb-rs 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/kingeasternsun/leveldb-rs
[INFO] finished tweaking git repo https://github.com/kingeasternsun/leveldb-rs
[INFO] tweaked toml for git repo https://github.com/kingeasternsun/leveldb-rs written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/kingeasternsun/leveldb-rs 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8b9335b312f5e71acccbdb16b15eb2a046cfaa090914fd5136086a5fa7d0d5e4
[INFO] running `Command { std: "docker" "start" "-a" "8b9335b312f5e71acccbdb16b15eb2a046cfaa090914fd5136086a5fa7d0d5e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b9335b312f5e71acccbdb16b15eb2a046cfaa090914fd5136086a5fa7d0d5e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b9335b312f5e71acccbdb16b15eb2a046cfaa090914fd5136086a5fa7d0d5e4", kill_on_drop: false }`
[INFO] [stdout] 8b9335b312f5e71acccbdb16b15eb2a046cfaa090914fd5136086a5fa7d0d5e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 408fb913c9d9e14e787cb36e7f83c30dcb98c7c623b0d68fb0d0615d7e68cf85
[INFO] running `Command { std: "docker" "start" "-a" "408fb913c9d9e14e787cb36e7f83c30dcb98c7c623b0d68fb0d0615d7e68cf85", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.104
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]     Checking ppv-lite86 v0.2.14
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]  Documenting leveldb-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `node` should have an upper camel case name
[INFO] [stdout]    --> src/memdb/memdb_node.rs:169:8
[INFO] [stdout]     |
[INFO] [stdout] 169 | struct node {
[INFO] [stdout]     |        ^^^^ help: convert the identifier to upper camel case: `Node`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `basic_comparer` should have an upper camel case name
[INFO] [stdout]   --> src/compare/compare.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub trait basic_comparer {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `BasicComparer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `tFile` should have an upper camel case name
[INFO] [stdout]   --> src/table.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct tFile {
[INFO] [stdout]    |            ^^^^^ help: convert the identifier to upper camel case: `TFile`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `tFiles` should have an upper camel case name
[INFO] [stdout]    --> src/table.rs:107:12
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub struct tFiles(Vec<tFile>);
[INFO] [stdout]     |            ^^^^^^ help: convert the identifier to upper camel case: `TFiles`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(partition_point)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `leveldb-rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name leveldb_rs src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=d88513d167dec28d -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-57de1f6d7c9c6f6c.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-d69f55fc73e7ac73.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-fb0fa06cab5f2736.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "408fb913c9d9e14e787cb36e7f83c30dcb98c7c623b0d68fb0d0615d7e68cf85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "408fb913c9d9e14e787cb36e7f83c30dcb98c7c623b0d68fb0d0615d7e68cf85", kill_on_drop: false }`
[INFO] [stdout] 408fb913c9d9e14e787cb36e7f83c30dcb98c7c623b0d68fb0d0615d7e68cf85