[INFO] fetching crate serenade 0.3.1...
[INFO] testing serenade-0.3.1 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate serenade 0.3.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate serenade 0.3.1
[INFO] finished tweaking crates.io crate serenade 0.3.1
[INFO] tweaked toml for crates.io crate serenade 0.3.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate serenade 0.3.1 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate serenade 0.3.1 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-format v0.4.0
[INFO] [stderr]   Downloaded actix-web-prom v0.5.1
[INFO] [stderr]   Downloaded bytestring v1.1.0
[INFO] [stderr]   Downloaded tpe v0.2.0
[INFO] [stderr]   Downloaded stats-cli v2.0.0
[INFO] [stderr]   Downloaded base-x v0.2.10
[INFO] [stderr]   Downloaded pin-project-internal v0.4.29
[INFO] [stderr]   Downloaded pin-project v0.4.29
[INFO] [stderr]   Downloaded rocksdb v0.16.0
[INFO] [stderr]   Downloaded semver v1.0.10
[INFO] [stderr]   Downloaded justconfig v1.0.1
[INFO] [stderr]   Downloaded dary_heap v0.2.5
[INFO] [stderr]   Downloaded prometheus v0.11.0
[INFO] [stderr]   Downloaded tdigest v0.2.3
[INFO] [stderr]   Downloaded librocksdb-sys v6.20.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9aca7dca196097240137a392cc35090095f402f7f77e0dd1a91d60f93afa6ab2
[INFO] running `Command { std: "docker" "start" "-a" "9aca7dca196097240137a392cc35090095f402f7f77e0dd1a91d60f93afa6ab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9aca7dca196097240137a392cc35090095f402f7f77e0dd1a91d60f93afa6ab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9aca7dca196097240137a392cc35090095f402f7f77e0dd1a91d60f93afa6ab2", kill_on_drop: false }`
[INFO] [stdout] 9aca7dca196097240137a392cc35090095f402f7f77e0dd1a91d60f93afa6ab2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30d0bcac59bfe71a738c2a247beb4c92bf028fb8807ca326aff94af10e9ff47a
[INFO] running `Command { std: "docker" "start" "-a" "30d0bcac59bfe71a738c2a247beb4c92bf028fb8807ca326aff94af10e9ff47a", kill_on_drop: false }`
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[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling slab v0.4.6
[INFO] [stderr]    Compiling futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling libm v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling once_cell v1.12.0
[INFO] [stderr]    Compiling futures-io v0.3.21
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling pin-project-lite v0.1.12
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling pin-project-internal v0.4.29
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[INFO] [stderr]    Compiling getrandom v0.1.16
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[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling match_cfg v0.1.0
[INFO] [stderr]    Compiling clang-sys v1.3.3
[INFO] [stderr]    Compiling ryu v1.0.10
[INFO] [stderr]    Compiling net2 v0.2.37
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[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling num_cpus v1.13.1
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[INFO] [stderr]    Compiling parking_lot v0.11.2
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[INFO] [stderr]    Compiling http v0.2.8
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[INFO] [stderr]    Compiling rand_chacha v0.2.2
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[INFO] [stderr]    Compiling miniz_oxide v0.5.3
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[INFO] [stderr]    Compiling brotli-decompressor v2.3.2
[INFO] [stderr]    Compiling rand_chacha v0.3.1
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[INFO] [stderr]    Compiling rayon-core v1.9.3
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[INFO] [stderr]    Compiling cpufeatures v0.2.2
[INFO] [stderr]    Compiling regex v1.5.6
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling sha-1 v0.9.8
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling flate2 v1.0.24
[INFO] [stderr]    Compiling num-complex v0.4.2
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling brotli v3.3.4
[INFO] [stderr]    Compiling socket2 v0.3.19
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling matrixmultiply v0.3.2
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[INFO] [stderr]    Compiling bytestring v1.1.0
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling prometheus v0.11.0
[INFO] [stderr]    Compiling rle-decode-fast v1.0.3
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling libflate_lz77 v1.1.0
[INFO] [stderr]    Compiling sys-info v0.9.1
[INFO] [stderr]    Compiling ordered-float v2.10.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling terminal_size v0.1.17
[INFO] [stderr]    Compiling dary_heap v0.2.5
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling anyhow v1.0.58
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling libflate v1.2.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling console v0.15.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling snap v0.2.5
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr] error: could not compile `syn` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/bin/rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-1.0.98/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "quote", "test", "visit", "visit-mut"))' -C metadata=1249105e4457b9e4 -C extra-filename=-c388f942b5084651 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-b0b7d9e6fbf14e76.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-816a53e66e9adb36.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-17b42ad7ead1f2b7.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0635]: unknown feature `stdsimd`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ahash-0.7.6/src/lib.rs:33:42
[INFO] [stdout]    |
[INFO] [stdout] 33 | #![cfg_attr(feature = "stdsimd", feature(stdsimd))]
[INFO] [stdout]    |                                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ahash` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "30d0bcac59bfe71a738c2a247beb4c92bf028fb8807ca326aff94af10e9ff47a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30d0bcac59bfe71a738c2a247beb4c92bf028fb8807ca326aff94af10e9ff47a", kill_on_drop: false }`
[INFO] [stdout] 30d0bcac59bfe71a738c2a247beb4c92bf028fb8807ca326aff94af10e9ff47a