[INFO] cloning repository https://github.com/denyvi/serial-contract
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/denyvi/serial-contract" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdenyvi%2Fserial-contract", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdenyvi%2Fserial-contract'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7051064c72b71bcf4998d725bbe317e53235d979
[INFO] documenting denyvi/serial-contract against 1.100.0-beta.1 for beta-rustdoc-1.100
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdenyvi%2Fserial-contract" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/denyvi/serial-contract
[INFO] finished tweaking git repo https://github.com/denyvi/serial-contract
[INFO] tweaked toml for git repo https://github.com/denyvi/serial-contract written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/denyvi/serial-contract on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/denyvi/serial-contract 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" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 07462292c2089f640f89ff5f9cf7aaaa48482802c90ce558c2b5b09ef2c37deb
[INFO] running `Command { std: "docker" "start" "07462292c2089f640f89ff5f9cf7aaaa48482802c90ce558c2b5b09ef2c37deb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07462292c2089f640f89ff5f9cf7aaaa48482802c90ce558c2b5b09ef2c37deb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "07462292c2089f640f89ff5f9cf7aaaa48482802c90ce558c2b5b09ef2c37deb" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07462292c2089f640f89ff5f9cf7aaaa48482802c90ce558c2b5b09ef2c37deb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "07462292c2089f640f89ff5f9cf7aaaa48482802c90ce558c2b5b09ef2c37deb" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] error[E0277]: a value of type `!` cannot be built from an iterator over elements of type `()`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/trie-db-0.27.1/src/node.rs:222:17
[INFO] [stdout]     |
[INFO] [stdout] 222 |                     .collect::<Result<_, _, _>>()?;
[INFO] [stdout]     |                      -------   ^^^^^^^^^^^^^^^ value of type `!` cannot be built from `std::iter::Iterator<Item=()>`
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromIterator<()>` is not implemented for `!`
[INFO] [stdout] help: the trait `FromIterator<std::result::Result<T, E>>` is conditionally implemented for `std::result::Result<V, E>`
[INFO] [stdout]    --> /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:2114:14
[INFO] [stdout]     |
[INFO] [stdout]     = note: unsatisfied requirement introduced here: `!: FromIterator<()>`
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]     = help: you might have intended to use the type `()` here instead
[INFO] [stdout]     = note: required for `Result<!, Box<TrieError<<<L as TrieLayout>::Hash as Hasher>::Out, _>>>` to implement `FromIterator<Result<(), Box<TrieError<<_ as Hasher>::Out, _>>>>`
[INFO] [stdout] note: required by a bound in `collect`
[INFO] [stdout]    --> /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/traits/iterator.rs:2087:4
[INFO] [stdout]     = note: the full name for the type has been written to '/opt/rustwide/target/debug/build/trie-db/643f9b4539b05676/out/trie_db-643f9b4539b05676.long-type-15222456992759767144.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: a value of type `!` cannot be built from an iterator over elements of type `()`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/trie-db-0.27.1/src/node.rs:236:17
[INFO] [stdout]     |
[INFO] [stdout] 236 |                     .collect::<Result<_, _, _>>()?;
[INFO] [stdout]     |                      -------   ^^^^^^^^^^^^^^^ value of type `!` cannot be built from `std::iter::Iterator<Item=()>`
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromIterator<()>` is not implemented for `!`
[INFO] [stdout] help: the trait `FromIterator<std::result::Result<T, E>>` is conditionally implemented for `std::result::Result<V, E>`
[INFO] [stdout]    --> /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:2114:14
[INFO] [stdout]     |
[INFO] [stdout]     = note: unsatisfied requirement introduced here: `!: FromIterator<()>`
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]     = help: you might have intended to use the type `()` here instead
[INFO] [stdout]     = note: required for `Result<!, Box<TrieError<<<L as TrieLayout>::Hash as Hasher>::Out, _>>>` to implement `FromIterator<Result<(), Box<TrieError<<_ as Hasher>::Out, _>>>>`
[INFO] [stdout] note: required by a bound in `collect`
[INFO] [stdout]    --> /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/traits/iterator.rs:2087:4
[INFO] [stdout]     = note: the full name for the type has been written to '/opt/rustwide/target/debug/build/trie-db/643f9b4539b05676/out/trie_db-643f9b4539b05676.long-type-15222456992759767144.txt'
[INFO] [stdout]     = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking trie-root v0.18.0
[INFO] [stderr]     Checking memory-db v0.32.0
[INFO] [stderr]    Compiling secp256k1-sys v0.8.1
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]     Checking ink_prelude v4.2.1
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling arrayref v0.3.7
[INFO] [stderr]     Checking xxhash-rust v0.8.6
[INFO] [stderr]    Compiling soketto v0.7.1
[INFO] [stderr]     Checking ink_primitives v4.2.1
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `trie-db` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "07462292c2089f640f89ff5f9cf7aaaa48482802c90ce558c2b5b09ef2c37deb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07462292c2089f640f89ff5f9cf7aaaa48482802c90ce558c2b5b09ef2c37deb", kill_on_drop: false }`
[INFO] [stdout] 07462292c2089f640f89ff5f9cf7aaaa48482802c90ce558c2b5b09ef2c37deb
