[INFO] cloning repository https://github.com/SicariusNoctis/rs-chess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SicariusNoctis/rs-chess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSicariusNoctis%2Frs-chess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSicariusNoctis%2Frs-chess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4076e092273e29743302a0a659f5f9c45eb1785d
[INFO] documenting SicariusNoctis/rs-chess against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSicariusNoctis%2Frs-chess" "/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/SicariusNoctis/rs-chess on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SicariusNoctis/rs-chess
[INFO] finished tweaking git repo https://github.com/SicariusNoctis/rs-chess
[INFO] tweaked toml for git repo https://github.com/SicariusNoctis/rs-chess written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/SicariusNoctis/rs-chess already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "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] a86ea15ba263bb069c6540e93721e992f28d185fbd722d77f2d78cefdc0e54b9
[INFO] running `Command { std: "docker" "start" "-a" "a86ea15ba263bb069c6540e93721e992f28d185fbd722d77f2d78cefdc0e54b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a86ea15ba263bb069c6540e93721e992f28d185fbd722d77f2d78cefdc0e54b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a86ea15ba263bb069c6540e93721e992f28d185fbd722d77f2d78cefdc0e54b9", kill_on_drop: false }`
[INFO] [stdout] a86ea15ba263bb069c6540e93721e992f28d185fbd722d77f2d78cefdc0e54b9
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "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] 9c4e3531ec7b23a029b46875ae59bab6023daf7498318e4c03ed4a0bc369f371
[INFO] running `Command { std: "docker" "start" "-a" "9c4e3531ec7b23a029b46875ae59bab6023daf7498318e4c03ed4a0bc369f371", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling serde v1.0.70
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling itoa v0.4.2
[INFO] [stderr]    Compiling dtoa v0.4.3
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.14.4
[INFO] [stderr]    Compiling serde_derive v1.0.70
[INFO] [stderr]     Checking serde_json v1.0.24
[INFO] [stderr]    Compiling flame v0.2.2
[INFO] [stderr]    Compiling flamer v0.3.0
[INFO] [stderr]  Documenting rs-chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/main.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin, custom_attribute)]
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of `#![register_tool]` and `#![register_attr]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `flame` in this scope
[INFO] [stdout]   --> src/search.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 |     #[flame]
[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] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `rs-chess`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name rs_chess src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-377337bd8a053685.rmeta --extern flame=/opt/rustwide/target/debug/deps/libflame-2b383499ced0eee6.rmeta --extern flamer=/opt/rustwide/target/debug/deps/libflamer-c079d2458935c535.so --cap-lints=forbid` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "9c4e3531ec7b23a029b46875ae59bab6023daf7498318e4c03ed4a0bc369f371", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c4e3531ec7b23a029b46875ae59bab6023daf7498318e4c03ed4a0bc369f371", kill_on_drop: false }`
[INFO] [stdout] 9c4e3531ec7b23a029b46875ae59bab6023daf7498318e4c03ed4a0bc369f371