[INFO] fetching crate matrix-sdk-base 0.5.1...
[INFO] documenting matrix-sdk-base-0.5.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate matrix-sdk-base 0.5.1 into /workspace/builds/worker-29/source
[INFO] validating manifest of crates.io crate matrix-sdk-base 0.5.1 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-29/source/.cargo/config
[INFO] started tweaking crates.io crate matrix-sdk-base 0.5.1
[INFO] finished tweaking crates.io crate matrix-sdk-base 0.5.1
[INFO] tweaked toml for crates.io crate matrix-sdk-base 0.5.1 written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 832660293c4f9d79c6c7bc191e1659763702edcb54295d256fae482035fa15b7
[INFO] running `Command { std: "docker" "start" "-a" "832660293c4f9d79c6c7bc191e1659763702edcb54295d256fae482035fa15b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "832660293c4f9d79c6c7bc191e1659763702edcb54295d256fae482035fa15b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "832660293c4f9d79c6c7bc191e1659763702edcb54295d256fae482035fa15b7", kill_on_drop: false }`
[INFO] [stdout] 832660293c4f9d79c6c7bc191e1659763702edcb54295d256fae482035fa15b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87d65d12b8f7adcfc745f0687c84132785611bc2c16a02f5ce0d0ba08de12891
[INFO] running `Command { std: "docker" "start" "-a" "87d65d12b8f7adcfc745f0687c84132785611bc2c16a02f5ce0d0ba08de12891", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.126
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[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]    Compiling getrandom v0.1.16
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[INFO] [stderr]     Checking tinyvec_macros v0.1.0
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[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking const-oid v0.6.2
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[INFO] [stderr]    Compiling futures-core v0.3.21
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[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling zeroize_derive v1.3.2
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[INFO] [stderr]    Compiling async-stream-impl v0.3.3
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[INFO] [stderr]    Compiling thiserror v1.0.31
[INFO] [stderr]    Compiling proc-macro-crate v1.1.3
[INFO] [stderr]    Compiling ruma-identifiers-validation v0.8.1
[INFO] [stderr]    Compiling ruma-macros v0.9.2
[INFO] [stderr]     Checking js_int v0.2.2
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[INFO] [stderr]     Checking ruma v0.6.3
[INFO] [stderr]     Checking matrix-sdk-common v0.5.0
[INFO] [stderr]  Documenting matrix-sdk-base v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.74s
[INFO] running `Command { std: "docker" "inspect" "87d65d12b8f7adcfc745f0687c84132785611bc2c16a02f5ce0d0ba08de12891", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87d65d12b8f7adcfc745f0687c84132785611bc2c16a02f5ce0d0ba08de12891", kill_on_drop: false }`
[INFO] [stdout] 87d65d12b8f7adcfc745f0687c84132785611bc2c16a02f5ce0d0ba08de12891
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--all-features" "--frozen" "--message-format=json" "--" "--cfg" "docsrs" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 0b467a416a4b66885394081dbde1e6874a3e0803782e5be250841e130472a776
[INFO] running `Command { std: "docker" "start" "-a" "0b467a416a4b66885394081dbde1e6874a3e0803782e5be250841e130472a776", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling getrandom v0.1.16
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[INFO] [stderr]    Compiling rayon-core v1.9.3
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[INFO] [stderr]    Compiling serde_json v1.0.81
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[INFO] [stderr]    Compiling proc-macro2 v0.4.30
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[INFO] [stderr]    Compiling futures-core v0.3.21
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[INFO] [stderr]     Checking bytemuck v1.9.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
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[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]     Checking assign v1.1.1
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[INFO] [stderr]     Checking checked_int_cast v1.0.0
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[INFO] [stderr]    Compiling itertools v0.10.3
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[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling num-traits v0.2.15
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[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling lock_api v0.4.7
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[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]     Checking http v0.2.7
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[INFO] [stderr]     Checking rand_chacha v0.2.2
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[INFO] [stderr]     Checking cbc v0.1.2
[INFO] [stderr]     Checking aes v0.8.1
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[INFO] [stderr]     Checking g2p v0.4.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking tiff v0.6.1
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling zeroize_derive v1.3.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.21
[INFO] [stderr]    Compiling prost-derive v0.10.1
[INFO] [stderr]    Compiling async-stream-impl v0.3.3
[INFO] [stderr]     Checking async-stream v0.3.3
[INFO] [stderr]     Checking zeroize v1.3.0
[INFO] [stderr]     Checking qrcode v0.12.0
[INFO] [stderr]     Checking rqrr v0.4.0
[INFO] [stderr]     Checking pkcs8 v0.7.6
[INFO] [stderr]     Checking chacha20 v0.8.1
[INFO] [stderr]    Compiling thiserror v1.0.31
[INFO] [stderr]     Checking chacha20poly1305 v0.9.0
[INFO] [stderr]     Checking prost v0.10.4
[INFO] [stderr]     Checking tracing v0.1.34
[INFO] [stderr]    Compiling ruma-identifiers-validation v0.8.1
[INFO] [stderr]    Compiling proc-macro-crate v1.1.3
[INFO] [stderr]    Compiling ruma-macros v0.9.2
[INFO] [stderr]     Checking curve25519-dalek v3.2.1
[INFO] [stderr]     Checking js_option v0.1.0
[INFO] [stderr]     Checking serde_bytes v0.11.6
[INFO] [stderr]     Checking ed25519 v1.5.2
[INFO] [stderr]     Checking js_int v0.2.2
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking ed25519-dalek v1.0.1
[INFO] [stderr]     Checking x25519-dalek v1.2.0
[INFO] [stderr]     Checking vodozemac v0.2.0
[INFO] [stderr]     Checking ruma-common v0.9.2
[INFO] [stderr]     Checking ruma-signatures v0.11.0
[INFO] [stderr]     Checking ruma-client-api v0.14.1
[INFO] [stderr]     Checking matrix-sdk-qrcode v0.3.0
[INFO] [stderr]     Checking ruma v0.6.3
[INFO] [stderr]     Checking matrix-sdk-common v0.5.0
[INFO] [stderr]     Checking matrix-sdk-crypto v0.5.0
[INFO] [stderr]  Documenting matrix-sdk-base v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not document `matrix-sdk-base`
[INFO] [stdout] error: expected expression, found `$`
[INFO] [stdout]    --> src/store/memory_store.rs:684:22
[INFO] [stdout]     |
[INFO] [stdout] 684 |           let stream = stream! {
[INFO] [stdout]     |  ______________________^
[INFO] [stdout] 685 | |             for (_, item) in events {
[INFO] [stdout] 686 | |                 yield Ok(item);
[INFO] [stdout] 687 | |             }
[INFO] [stdout] 688 | |         };
[INFO] [stdout]     | |_________^ expected expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::async_stream_impl::stream_inner` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name matrix_sdk_base src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="chacha20poly1305"' --cfg 'feature="default"' --cfg 'feature="e2e-encryption"' --cfg 'feature="experimental-timeline"' --cfg 'feature="hmac"' --cfg 'feature="http"' --cfg 'feature="matrix-sdk-crypto"' --cfg 'feature="pbkdf2"' --cfg 'feature="qrcode"' --cfg 'feature="rand"' --cfg 'feature="sha2"' --cfg 'feature="testing"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --cfg docsrs -Z unstable-options --document-private-items -C metadata=620a89a6eac9ef1c -L dependency=/opt/rustwide/target/debug/deps --extern async_stream=/opt/rustwide/target/debug/deps/libasync_stream-73e34046bb62d0bc.rmeta --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-1cc28e7feb38ab3a.so --extern chacha20poly1305=/opt/rustwide/target/debug/deps/libchacha20poly1305-0b989d1f18197896.rmeta --extern dashmap=/opt/rustwide/target/debug/deps/libdashmap-d6375f9e901e14ae.rmeta --extern futures_channel=/opt/rustwide/target/debug/deps/libfutures_channel-6fed3fdd4750d375.rmeta --extern futures_core=/opt/rustwide/target/debug/deps/libfutures_core-d1e957824af4b204.rmeta --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-ae33cc5599a0adb4.rmeta --extern hmac=/opt/rustwide/target/debug/deps/libhmac-9adde696d2bfc3f2.rmeta --extern http=/opt/rustwide/target/debug/deps/libhttp-9fbf04e501cdcf05.rmeta --extern lru=/opt/rustwide/target/debug/deps/liblru-03132ffc96c6c305.rmeta --extern matrix_sdk_common=/opt/rustwide/target/debug/deps/libmatrix_sdk_common-c121683fbd1c10c1.rmeta --extern matrix_sdk_crypto=/opt/rustwide/target/debug/deps/libmatrix_sdk_crypto-2a636a631b1f9b66.rmeta --extern pbkdf2=/opt/rustwide/target/debug/deps/libpbkdf2-93fa093b13774b62.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-2d27c8d9e3cc560d.rmeta --extern ruma=/opt/rustwide/target/debug/deps/libruma-78a26f124139066e.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-7861a871ee16da09.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-85697a6f2a1114d3.rmeta --extern sha2=/opt/rustwide/target/debug/deps/libsha2-4a73a7d73994bc3a.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-38257b06d8bdf695.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-f6751c23a35b415c.rmeta --extern zeroize=/opt/rustwide/target/debug/deps/libzeroize-574d4632f960f134.rmeta --extern-html-root-url 'async_stream=https://docs.rs/async-stream/0.3.3/' --extern-html-root-url 'async_trait=https://docs.rs/async-trait/0.1.53/' --extern-html-root-url 'chacha20poly1305=https://docs.rs/chacha20poly1305/0.9.0/' --extern-html-root-url 'dashmap=https://docs.rs/dashmap/5.3.4/' --extern-html-root-url 'futures_channel=https://docs.rs/futures-channel/0.3.21/' --extern-html-root-url 'futures_core=https://docs.rs/futures-core/0.3.21/' --extern-html-root-url 'futures_util=https://docs.rs/futures-util/0.3.21/' --extern-html-root-url 'hmac=https://docs.rs/hmac/0.12.1/' --extern-html-root-url 'http=https://docs.rs/http/0.2.7/' --extern-html-root-url 'lru=https://docs.rs/lru/0.7.6/' --extern-html-root-url 'matrix_sdk_common=https://docs.rs/matrix-sdk-common/0.5.0/' --extern-html-root-url 'matrix_sdk_crypto=https://docs.rs/matrix-sdk-crypto/0.5.0/' --extern-html-root-url 'pbkdf2=https://docs.rs/pbkdf2/0.11.0/' --extern-html-root-url 'rand=https://docs.rs/rand/0.8.5/' --extern-html-root-url 'ruma=https://docs.rs/ruma/0.6.3/' --extern-html-root-url 'serde=https://docs.rs/serde/1.0.137/' --extern-html-root-url 'serde_json=https://docs.rs/serde_json/1.0.81/' --extern-html-root-url 'sha2=https://docs.rs/sha2/0.10.2/' --extern-html-root-url 'thiserror=https://docs.rs/thiserror/1.0.31/' --extern-html-root-url 'tracing=https://docs.rs/tracing/0.1.34/' --extern-html-root-url 'zeroize=https://docs.rs/zeroize/1.3.0/' -Zunstable-options --crate-version 0.5.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "0b467a416a4b66885394081dbde1e6874a3e0803782e5be250841e130472a776", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b467a416a4b66885394081dbde1e6874a3e0803782e5be250841e130472a776", kill_on_drop: false }`
[INFO] [stdout] 0b467a416a4b66885394081dbde1e6874a3e0803782e5be250841e130472a776