[INFO] cloning repository https://github.com/PaulGrandperrin/playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PaulGrandperrin/playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPaulGrandperrin%2Fplayground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPaulGrandperrin%2Fplayground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 572ff41ccdfa72771a37fd9ab89f37e9b5451041
[INFO] documenting PaulGrandperrin/playground against 1.69.0 for beta-1.70-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPaulGrandperrin%2Fplayground" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PaulGrandperrin/playground on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/PaulGrandperrin/playground
[INFO] finished tweaking git repo https://github.com/PaulGrandperrin/playground
[INFO] tweaked toml for git repo https://github.com/PaulGrandperrin/playground written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/PaulGrandperrin/playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded backtrace v0.3.26
[INFO] [stderr]   Downloaded redox_syscall v0.1.54
[INFO] [stderr]   Downloaded autocfg v0.1.4
[INFO] [stderr]   Downloaded bincode v1.1.4
[INFO] [stderr]   Downloaded serde_derive v1.0.91
[INFO] [stderr]   Downloaded serde v1.0.91
[INFO] [stderr]   Downloaded color-backtrace v0.1.3
[INFO] [stderr]   Downloaded term v0.5.2
[INFO] [stderr]   Downloaded exitfailure v0.5.1
[INFO] [stderr]   Downloaded either v1.5.2
[INFO] [stderr]   Downloaded itertools v0.8.0
[INFO] [stderr]   Downloaded libc v0.2.55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9de39b62aa643ba997cc586eed6fc257a9b035819a859bbc23a286a45890ffb
[INFO] running `Command { std: "docker" "start" "-a" "d9de39b62aa643ba997cc586eed6fc257a9b035819a859bbc23a286a45890ffb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9de39b62aa643ba997cc586eed6fc257a9b035819a859bbc23a286a45890ffb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9de39b62aa643ba997cc586eed6fc257a9b035819a859bbc23a286a45890ffb", kill_on_drop: false }`
[INFO] [stdout] d9de39b62aa643ba997cc586eed6fc257a9b035819a859bbc23a286a45890ffb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b08cd2a810ee8138308f6957b056b3a05cc2448df67c3350c237e9aeca1a44b
[INFO] running `Command { std: "docker" "start" "-a" "9b08cd2a810ee8138308f6957b056b3a05cc2448df67c3350c237e9aeca1a44b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling libc v0.2.55
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling serde v1.0.91
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]    Compiling serde_derive v1.0.91
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling backtrace v0.3.26
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]     Checking backtrace-sys v0.1.28
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking color-backtrace v0.1.3
[INFO] [stderr]     Checking exitfailure v0.5.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]  Documenting playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | / #![feature(
[INFO] [stdout] 2 | |     trivial_bounds,
[INFO] [stdout] 3 | |     try_from,
[INFO] [stdout] 4 | |     non_exhaustive,
[INFO] [stdout] ... |
[INFO] [stdout] 8 | |     never_type
[INFO] [stdout] 9 | | )]
[INFO] [stdout]   | |__^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `uniform_paths` has been stable since `1.32.0` and no longer requires an attribute to enable
[INFO] [stdout]   = help: the feature `uniform_paths` has been stable since `1.32.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/algorithm.rs:302:20
[INFO] [stdout]     |
[INFO] [stdout] 302 |                 if (num_of_candidates_for_cur_child > BUF_SIZE) { // BIG TODO find a better heuristic
[INFO] [stdout]     |                    ^                                          ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 302 -                 if (num_of_candidates_for_cur_child > BUF_SIZE) { // BIG TODO find a better heuristic
[INFO] [stdout] 302 +                 if num_of_candidates_for_cur_child > BUF_SIZE { // BIG TODO find a better heuristic
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/non_volatile/object/tree/internal_node.rs:45:42
[INFO] [stdout]    |
[INFO] [stdout] 45 |             _p: std::marker::PhantomData<(K)>,
[INFO] [stdout]    |                                          ^ ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 45 -             _p: std::marker::PhantomData<(K)>,
[INFO] [stdout] 45 +             _p: std::marker::PhantomData<K>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 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 `playground`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name playground src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=9111ded8c7d2c23c -L dependency=/opt/rustwide/target/debug/deps --extern bincode=/opt/rustwide/target/debug/deps/libbincode-f6f3f5f86e351768.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-f9b5c8448ed796a2.rmeta --extern color_backtrace=/opt/rustwide/target/debug/deps/libcolor_backtrace-a9cdc64f10722ce4.rmeta --extern exitfailure=/opt/rustwide/target/debug/deps/libexitfailure-fb395225e92fad96.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-d833ba59e25a15d8.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-9c088112755d1e91.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-ae20b24f56de9e52.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-2fa0bfc538ccf18c.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "9b08cd2a810ee8138308f6957b056b3a05cc2448df67c3350c237e9aeca1a44b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b08cd2a810ee8138308f6957b056b3a05cc2448df67c3350c237e9aeca1a44b", kill_on_drop: false }`
[INFO] [stdout] 9b08cd2a810ee8138308f6957b056b3a05cc2448df67c3350c237e9aeca1a44b
