[INFO] cloning repository https://github.com/darwinia-network/mmrconv
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/darwinia-network/mmrconv" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarwinia-network%2Fmmrconv", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarwinia-network%2Fmmrconv'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 41454b57bb3853b4ab675349a5ab7c10d26b7def
[INFO] documenting darwinia-network/mmrconv 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%2Fdarwinia-network%2Fmmrconv" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/darwinia-network/mmrconv 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/darwinia-network/mmrconv
[INFO] finished tweaking git repo https://github.com/darwinia-network/mmrconv
[INFO] tweaked toml for git repo https://github.com/darwinia-network/mmrconv written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/darwinia-network/mmrconv 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]     Updating git repository `https://github.com/darwinia-network/merkle-mountain-range.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ureq v2.1.1
[INFO] [stderr]   Downloaded cargo_toml v0.9.2
[INFO] [stderr]   Downloaded array-bytes v1.3.3
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[INFO] [stderr]   Downloaded subrpcer v0.4.0
[INFO] [stderr]   Downloaded submetadatan v0.5.1
[INFO] [stderr]   Downloaded substorager v0.3.0
[INFO] [stderr]   Downloaded subcryptor v0.2.0
[INFO] [stderr]   Downloaded subrpcer v0.2.3
[INFO] [stderr]   Downloaded subrpcer-impl v0.1.2
[INFO] [stderr]   Downloaded substorager v0.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] c29528f9953eb6bbd24df3190e49b14b1ad6a68f5d1578887282443c683b7013
[INFO] running `Command { std: "docker" "start" "-a" "c29528f9953eb6bbd24df3190e49b14b1ad6a68f5d1578887282443c683b7013", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c29528f9953eb6bbd24df3190e49b14b1ad6a68f5d1578887282443c683b7013", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c29528f9953eb6bbd24df3190e49b14b1ad6a68f5d1578887282443c683b7013", kill_on_drop: false }`
[INFO] [stdout] c29528f9953eb6bbd24df3190e49b14b1ad6a68f5d1578887282443c683b7013
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 1da78c546ae0dc5219deed38af118ac08284fdbbad5a9aa2274d421182175835
[INFO] running `Command { std: "docker" "start" "-a" "1da78c546ae0dc5219deed38af118ac08284fdbbad5a9aa2274d421182175835", kill_on_drop: false }`
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[INFO] [stderr]     Checking ckb-merkle-mountain-range v0.3.1 (https://github.com/darwinia-network/merkle-mountain-range.git#b16216f9)
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[INFO] [stderr]    Compiling pin-project-internal v1.0.7
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[INFO] [stderr]    Compiling subrpcer-impl v0.1.2
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]     Checking tracing v0.1.26
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[INFO] [stderr]     Checking async-io v1.4.1
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[INFO] [stderr]     Checking async-std v1.9.0
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[INFO] [stderr]     Checking cargo_toml v0.9.2
[INFO] [stderr]     Checking ureq v2.1.1
[INFO] [stderr]  Documenting staking-ledger-checker v0.1.0 (/opt/rustwide/workdir/staking-ledger-checker)
[INFO] [stderr]  Documenting mmr-verifier v0.1.0 (/opt/rustwide/workdir/mmr-verifier)
[INFO] [stderr]     Checking subrpcer v0.4.0
[INFO] [stderr]    Compiling proc-macro-crate v1.0.0
[INFO] [stderr]    Compiling parity-scale-codec-derive v2.2.0
[INFO] [stderr]     Checking subrpcer v0.2.3
[INFO] [stderr]     Checking parity-scale-codec v2.2.0
[INFO] [stderr]     Checking substorager v0.3.0
[INFO] [stderr]  Documenting mmr-exporter v0.1.0 (/opt/rustwide/workdir/mmr-exporter)
[INFO] [stderr]     Checking submetadatan v0.5.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/submetadatan-0.5.1/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(arbitrary_enum_discriminant)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `arbitrary_enum_discriminant` has been stable since `1.66.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `submetadatan` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1da78c546ae0dc5219deed38af118ac08284fdbbad5a9aa2274d421182175835", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1da78c546ae0dc5219deed38af118ac08284fdbbad5a9aa2274d421182175835", kill_on_drop: false }`
[INFO] [stdout] 1da78c546ae0dc5219deed38af118ac08284fdbbad5a9aa2274d421182175835
