[INFO] crate panic-rtt-target 0.1.0 is already in cache
[INFO] documenting panic-rtt-target-0.1.0 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate panic-rtt-target 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate panic-rtt-target 0.1.0 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 crates.io crate panic-rtt-target 0.1.0
[INFO] finished tweaking crates.io crate panic-rtt-target 0.1.0
[INFO] tweaked toml for crates.io crate panic-rtt-target 0.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "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] [stdout] 8f3021a2a061b3e0d739382334da5b5f90c4d1e51f549c248097f9d003410db5
[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" "8f3021a2a061b3e0d739382334da5b5f90c4d1e51f549c248097f9d003410db5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f3021a2a061b3e0d739382334da5b5f90c4d1e51f549c248097f9d003410db5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f3021a2a061b3e0d739382334da5b5f90c4d1e51f549c248097f9d003410db5", kill_on_drop: false }`
[INFO] [stdout] 8f3021a2a061b3e0d739382334da5b5f90c4d1e51f549c248097f9d003410db5
[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" "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] [stdout] 7b3cb0a3cc7b7a79acd3cd994aa7d63e8025b67e59f71559043c1eacbc74d62f
[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" "7b3cb0a3cc7b7a79acd3cd994aa7d63e8025b67e59f71559043c1eacbc74d62f", kill_on_drop: false }`
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]     Checking rtt-target v0.1.1
[INFO] [stderr]  Documenting panic-rtt-target v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: You must specify a platform feature for panic-rtt-target, such as 'cortex-m'.
[INFO] [stdout]   --> src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | compile_error!("You must specify a platform feature for panic-rtt-target, such as 'cortex-m'.");
[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] [stderr] error: Could not document `panic-rtt-target`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name panic_rtt_target 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 rtt_target=/opt/rustwide/target/debug/deps/librtt_target-d4a036c0900b2da9.rmeta --cap-lints=forbid` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "7b3cb0a3cc7b7a79acd3cd994aa7d63e8025b67e59f71559043c1eacbc74d62f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b3cb0a3cc7b7a79acd3cd994aa7d63e8025b67e59f71559043c1eacbc74d62f", kill_on_drop: false }`
[INFO] [stdout] 7b3cb0a3cc7b7a79acd3cd994aa7d63e8025b67e59f71559043c1eacbc74d62f