[INFO] cloning repository https://github.com/koalatux/riscv-rust-mfrc522
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/koalatux/riscv-rust-mfrc522" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkoalatux%2Friscv-rust-mfrc522", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkoalatux%2Friscv-rust-mfrc522'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 56b6b7e17956a73a13ad494f48c13ad9a4140c6e
[INFO] documenting koalatux/riscv-rust-mfrc522 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkoalatux%2Friscv-rust-mfrc522" "/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/koalatux/riscv-rust-mfrc522 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5/source/.cargo/config
[INFO] started tweaking git repo https://github.com/koalatux/riscv-rust-mfrc522
[INFO] finished tweaking git repo https://github.com/koalatux/riscv-rust-mfrc522
[INFO] tweaked toml for git repo https://github.com/koalatux/riscv-rust-mfrc522 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/koalatux/riscv-rust-mfrc522 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-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" "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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fdae877c8148cf32a7eb46d9aa96a8a5a4ca9dfb0aca3364a2ce2e25a7a3e8cd
[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" "fdae877c8148cf32a7eb46d9aa96a8a5a4ca9dfb0aca3364a2ce2e25a7a3e8cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fdae877c8148cf32a7eb46d9aa96a8a5a4ca9dfb0aca3364a2ce2e25a7a3e8cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdae877c8148cf32a7eb46d9aa96a8a5a4ca9dfb0aca3364a2ce2e25a7a3e8cd", kill_on_drop: false }`
[INFO] [stdout] fdae877c8148cf32a7eb46d9aa96a8a5a4ca9dfb0aca3364a2ce2e25a7a3e8cd
[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" "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" "+1.46.0" "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] 4f73b3ad699ac5cfb79134add38c6815fc2fc95e58f80f51abcdc7da5db108a1
[INFO] running `Command { std: "docker" "start" "-a" "4f73b3ad699ac5cfb79134add38c6815fc2fc95e58f80f51abcdc7da5db108a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling riscv v0.5.2
[INFO] [stderr]    Compiling riscv-rt v0.5.0
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]    Compiling e310x v0.5.2
[INFO] [stderr]     Checking nb v0.1.2
[INFO] [stderr]     Checking vcell v0.1.0
[INFO] [stderr]    Compiling hifive1 v0.6.0
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]     Checking generic-array v0.11.1
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling bare-metal v0.2.4
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]     Checking embedded-hal v0.2.3
[INFO] [stderr]     Checking mfrc522 v0.2.0
[INFO] [stderr]    Compiling riscv-rt-macros v0.1.5
[INFO] [stderr]     Checking e310x-hal v0.6.1
[INFO] [stderr]  Documenting riscv-rust-quickstart v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused attribute
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![no_main]
[INFO] [stdout]   | ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate-level attribute should be in the root module
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![no_main]
[INFO] [stdout]   | ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.54s
[INFO] running `Command { std: "docker" "inspect" "4f73b3ad699ac5cfb79134add38c6815fc2fc95e58f80f51abcdc7da5db108a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f73b3ad699ac5cfb79134add38c6815fc2fc95e58f80f51abcdc7da5db108a1", kill_on_drop: false }`
[INFO] [stdout] 4f73b3ad699ac5cfb79134add38c6815fc2fc95e58f80f51abcdc7da5db108a1