[INFO] fetching crate tmkms 0.9.0-alpha4...
[INFO] documenting tmkms-0.9.0-alpha4 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate tmkms 0.9.0-alpha4 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate tmkms 0.9.0-alpha4 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tmkms 0.9.0-alpha4
[INFO] finished tweaking crates.io crate tmkms 0.9.0-alpha4
[INFO] tweaked toml for crates.io crate tmkms 0.9.0-alpha4 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate tmkms 0.9.0-alpha4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cde7ee9dc881b0ef21724506a17a8eecb59cc69a21dfb1a8a15d8a00e01fea5b
[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" "cde7ee9dc881b0ef21724506a17a8eecb59cc69a21dfb1a8a15d8a00e01fea5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cde7ee9dc881b0ef21724506a17a8eecb59cc69a21dfb1a8a15d8a00e01fea5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cde7ee9dc881b0ef21724506a17a8eecb59cc69a21dfb1a8a15d8a00e01fea5b", kill_on_drop: false }`
[INFO] [stdout] cde7ee9dc881b0ef21724506a17a8eecb59cc69a21dfb1a8a15d8a00e01fea5b
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b14dbeff66a5845f80d7a6285b8e03cdf7371d2c8090ca3b602cea900df9b9d
[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" "9b14dbeff66a5845f80d7a6285b8e03cdf7371d2c8090ca3b602cea900df9b9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling cpuid-bool v0.1.2
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling clear_on_drop v0.2.4
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking prost-amino v0.6.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.2
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking backtrace v0.3.51
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking universal-hash v0.4.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling futures-macro v0.3.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling gumdrop_derive v0.7.0
[INFO] [stderr]    Compiling serde_repr v0.1.6
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking ripemd160 v0.9.1
[INFO] [stderr]    Compiling sha2 v0.9.1
[INFO] [stderr]     Checking poly1305 v0.6.1
[INFO] [stderr]     Checking tracing v0.1.21
[INFO] [stderr]     Checking hmac v0.8.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking serde_json v1.0.58
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking color-backtrace v0.3.0
[INFO] [stderr]     Checking anomaly v0.2.0
[INFO] [stderr]     Checking hkdf v0.9.0
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]    Compiling curve25519-dalek v1.2.4
[INFO] [stderr]    Compiling zeroize_derive v1.0.1
[INFO] [stderr]    Compiling signature_derive v1.0.0-pre.2
[INFO] [stderr]     Checking tai64 v3.1.0
[INFO] [stderr]     Checking tracing-subscriber v0.1.6
[INFO] [stderr]     Checking ed25519-dalek v1.0.0-pre.2
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]    Compiling prost-amino-derive v0.6.1
[INFO] [stderr]     Checking gumdrop v0.7.0
[INFO] [stderr]     Checking futures-util v0.3.6
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]     Checking zeroize v1.1.1
[INFO] [stderr]     Checking elliptic-curve v0.4.0
[INFO] [stderr]     Checking subtle-encoding v0.5.1
[INFO] [stderr]     Checking curve25519-dalek v3.0.0
[INFO] [stderr]     Checking chacha20 v0.4.3
[INFO] [stderr]     Checking secrecy v0.6.0
[INFO] [stderr]     Checking merlin v2.0.0
[INFO] [stderr]     Checking hkd32 v0.4.0
[INFO] [stderr]     Checking signature v1.1.0
[INFO] [stderr]     Checking ed25519 v1.0.2
[INFO] [stderr]     Checking k256 v0.3.0
[INFO] [stderr]     Checking chacha20poly1305 v0.5.1
[INFO] [stderr]     Checking ecdsa v0.6.1
[INFO] [stderr]     Checking signatory v0.20.0
[INFO] [stderr]     Checking x25519-dalek v1.1.0
[INFO] [stderr]     Checking signatory-secp256k1 v0.20.0
[INFO] [stderr]     Checking signatory-dalek v0.20.0
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling abscissa_derive v0.5.0
[INFO] [stderr]     Checking abscissa_core v0.5.2
[INFO] [stderr]     Checking futures-executor v0.3.6
[INFO] [stderr]     Checking futures v0.3.6
[INFO] [stderr]     Checking tendermint v0.15.0
[INFO] [stderr]  Documenting tmkms v0.9.0-alpha4 (/opt/rustwide/workdir)
[INFO] [stdout] error: please enable one of the following backends with cargo's --features argument: yubihsm, ledgertm, softsign (e.g. --features=yubihsm)
[INFO] [stdout]   --> src/lib.rs:8:1
[INFO] [stdout]    |
[INFO] [stdout] 8  | / compile_error!(
[INFO] [stdout] 9  | |     "please enable one of the following backends with cargo's --features argument: \
[INFO] [stdout] 10 | |      yubihsm, ledgertm, softsign (e.g. --features=yubihsm)"
[INFO] [stdout] 11 | | );
[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 `tmkms`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name tmkms 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 abscissa_core=/opt/rustwide/target/debug/deps/libabscissa_core-f9035d140d656491.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-060d9d2e342fea55.rmeta --extern chacha20poly1305=/opt/rustwide/target/debug/deps/libchacha20poly1305-c8d0e48b87735b85.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-553eeefb8aeec512.rmeta --extern getrandom=/opt/rustwide/target/debug/deps/libgetrandom-0eec2299226174c7.rmeta --extern gumdrop=/opt/rustwide/target/debug/deps/libgumdrop-88e9c94850c1f0c4.rmeta --extern hkd32=/opt/rustwide/target/debug/deps/libhkd32-39be4cc2d4cf2fbb.rmeta --extern hkdf=/opt/rustwide/target/debug/deps/libhkdf-e339070ca88d45bc.rmeta --extern k256=/opt/rustwide/target/debug/deps/libk256-e478633e381c60a1.rmeta --extern merlin=/opt/rustwide/target/debug/deps/libmerlin-2c2ff920b39cb9f6.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-d926fdf7c10f1bde.rmeta --extern prost_amino=/opt/rustwide/target/debug/deps/libprost_amino-f24cd22db5aa68c4.rmeta --extern prost_amino_derive=/opt/rustwide/target/debug/deps/libprost_amino_derive-ae2e6f2ea3b09999.so --extern rand=/opt/rustwide/target/debug/deps/librand-c85954dc41156076.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-b9314331ecaf12d2.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-64661fc407ac218d.rmeta --extern sha2=/opt/rustwide/target/debug/deps/libsha2-753dd88c7956da22.rmeta --extern signatory=/opt/rustwide/target/debug/deps/libsignatory-e343a681d013fcf9.rmeta --extern signatory_dalek=/opt/rustwide/target/debug/deps/libsignatory_dalek-b1e7c14ee79a3a8e.rmeta --extern subtle=/opt/rustwide/target/debug/deps/libsubtle-11e9f3d75f568bdf.rmeta --extern subtle_encoding=/opt/rustwide/target/debug/deps/libsubtle_encoding-b4fb6eed30cfa85d.rmeta --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-5301f6fa520f8279.rmeta --extern tendermint=/opt/rustwide/target/debug/deps/libtendermint-9ffab159a42d9b11.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-7740d2e00c23f951.rmeta --extern wait_timeout=/opt/rustwide/target/debug/deps/libwait_timeout-90b5f085fd203326.rmeta --extern x25519_dalek=/opt/rustwide/target/debug/deps/libx25519_dalek-934374e72d409657.rmeta --extern zeroize=/opt/rustwide/target/debug/deps/libzeroize-44d4b14357160333.rmeta --cap-lints=warn --crate-version 0.9.0-alpha4` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "9b14dbeff66a5845f80d7a6285b8e03cdf7371d2c8090ca3b602cea900df9b9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b14dbeff66a5845f80d7a6285b8e03cdf7371d2c8090ca3b602cea900df9b9d", kill_on_drop: false }`
[INFO] [stdout] 9b14dbeff66a5845f80d7a6285b8e03cdf7371d2c8090ca3b602cea900df9b9d
