[INFO] fetching crate tendermint 0.21.0...
[INFO] documenting tendermint-0.21.0 against beta-2021-09-08 for beta-1.56-rustdoc-1
[INFO] extracting crate tendermint 0.21.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate tendermint 0.21.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tendermint 0.21.0
[INFO] finished tweaking crates.io crate tendermint 0.21.0
[INFO] tweaked toml for crates.io crate tendermint 0.21.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", 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] fb05f7464abe83fec2cd1e80fe57a68bd77010b5aa097b5e6df1f24cf3fa4f8d
[INFO] running `Command { std: "docker" "start" "-a" "fb05f7464abe83fec2cd1e80fe57a68bd77010b5aa097b5e6df1f24cf3fa4f8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb05f7464abe83fec2cd1e80fe57a68bd77010b5aa097b5e6df1f24cf3fa4f8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb05f7464abe83fec2cd1e80fe57a68bd77010b5aa097b5e6df1f24cf3fa4f8d", kill_on_drop: false }`
[INFO] [stdout] fb05f7464abe83fec2cd1e80fe57a68bd77010b5aa097b5e6df1f24cf3fa4f8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "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] 0523df4b0c355bc2b812f84483e7d2a0568986a384caee60a69af31d56d07492
[INFO] running `Command { std: "docker" "start" "-a" "0523df4b0c355bc2b812f84483e7d2a0568986a384caee60a69af31d56d07492", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling prost-derive v0.7.0
[INFO] [stderr]     Checking sha2 v0.9.8
[INFO] [stderr]     Checking anomaly v0.2.0
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling serde_repr v0.1.7
[INFO] [stderr]    Compiling zeroize_derive v1.1.0
[INFO] [stderr]     Checking futures-util v0.3.17
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking ed25519 v1.2.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/prost-derive-0.7.0/src/lib.rs:109:14
[INFO] [stdout]     |
[INFO] [stdout] 109 |             .intersperse(quote!(|));
[INFO] [stdout]     |              ^^^^^^^^^^^ multiple `intersperse` found
[INFO] [stdout]     |
[INFO] [stdout]     = note: candidate #1 is defined in an impl of the trait `Iterator` for the type `Map<I, F>`
[INFO] [stdout]     = note: candidate #2 is defined in an impl of the trait `Itertools` for the type `T`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 105 ~         let tags = Iterator::intersperse(field
[INFO] [stdout] 106 +             .tags()
[INFO] [stdout] 107 +             .into_iter()
[INFO] [stdout] 108 +             .map(|tag| quote!(#tag)), {
[INFO] [stdout] 109 +         let mut _s = $crate::__private::TokenStream::new();
[INFO] [stdout] 110 +         $crate::quote_each_token!(_s $($tt)*);
[INFO] [stdout]   ...
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 105 ~         let tags = Itertools::intersperse(field
[INFO] [stdout] 106 +             .tags()
[INFO] [stdout] 107 +             .into_iter()
[INFO] [stdout] 108 +             .map(|tag| quote!(#tag)), {
[INFO] [stdout] 109 +         let mut _s = $crate::__private::TokenStream::new();
[INFO] [stdout] 110 +         $crate::quote_each_token!(_s $($tt)*);
[INFO] [stdout]   ...
[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 E0034`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `prost-derive` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0523df4b0c355bc2b812f84483e7d2a0568986a384caee60a69af31d56d07492", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0523df4b0c355bc2b812f84483e7d2a0568986a384caee60a69af31d56d07492", kill_on_drop: false }`
[INFO] [stdout] 0523df4b0c355bc2b812f84483e7d2a0568986a384caee60a69af31d56d07492