[INFO] cloning repository https://github.com/djkoloski/rust_serialization_benchmark
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/djkoloski/rust_serialization_benchmark" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjkoloski%2Frust_serialization_benchmark", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjkoloski%2Frust_serialization_benchmark'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bb3737e72087522b41d73f22384ca57ed7b12f7b
[INFO] testing djkoloski/rust_serialization_benchmark against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjkoloski%2Frust_serialization_benchmark" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/djkoloski/rust_serialization_benchmark on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/djkoloski/rust_serialization_benchmark
[INFO] finished tweaking git repo https://github.com/djkoloski/rust_serialization_benchmark
[INFO] tweaked toml for git repo https://github.com/djkoloski/rust_serialization_benchmark written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded abomonation_derive v0.5.0
[INFO] [stderr]   Downloaded seahash v4.1.0
[INFO] [stderr]   Downloaded borsh-derive v0.9.1
[INFO] [stderr]   Downloaded libflate_lz77 v1.1.0
[INFO] [stderr]   Downloaded borsh v0.9.1
[INFO] [stderr]   Downloaded which v4.2.2
[INFO] [stderr]   Downloaded speedy-derive v0.7.1
[INFO] [stderr]   Downloaded heapless v0.7.4
[INFO] [stderr]   Downloaded bytecheck_derive v0.6.5
[INFO] [stderr]   Downloaded atomic-polyfill v0.1.3
[INFO] [stderr]   Downloaded postcard v0.7.2
[INFO] [stderr]   Downloaded rand_pcg v0.3.1
[INFO] [stderr]   Downloaded libflate v1.1.0
[INFO] [stderr]   Downloaded alkahest v0.1.4
[INFO] [stderr]   Downloaded borsh-derive-internal v0.9.1
[INFO] [stderr]   Downloaded embedded-hal v0.2.6
[INFO] [stderr]   Downloaded capnp v0.14.3
[INFO] [stderr]   Downloaded rkyv_derive v0.7.8
[INFO] [stderr]   Downloaded nachricht-serde v0.3.1
[INFO] [stderr]   Downloaded alkahest-proc v0.1.4
[INFO] [stderr]   Downloaded borsh-schema-derive-internal v0.9.1
[INFO] [stderr]   Downloaded rend v0.3.2
[INFO] [stderr]   Downloaded speedy v0.7.1
[INFO] [stderr]   Downloaded cortex-m v0.7.3
[INFO] [stderr]   Downloaded capnpc v0.14.4
[INFO] [stderr]   Downloaded ptr_meta v0.1.4
[INFO] [stderr]   Downloaded rkyv v0.7.8
[INFO] [stderr]   Downloaded postcard-cobs v0.1.5-pre
[INFO] [stderr]   Downloaded ptr_meta_derive v0.1.4
[INFO] [stderr]   Downloaded bytecheck v0.6.5
[INFO] [stderr]   Downloaded nachricht v0.2.0
[INFO] [stderr]   Downloaded abomonation v0.7.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd95fbf1f743f67e9c30cac7ddda3c6d1aec702cb59ddcdf93e11f6670ab481a
[INFO] running `Command { std: "docker" "start" "-a" "dd95fbf1f743f67e9c30cac7ddda3c6d1aec702cb59ddcdf93e11f6670ab481a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd95fbf1f743f67e9c30cac7ddda3c6d1aec702cb59ddcdf93e11f6670ab481a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd95fbf1f743f67e9c30cac7ddda3c6d1aec702cb59ddcdf93e11f6670ab481a", kill_on_drop: false }`
[INFO] [stdout] dd95fbf1f743f67e9c30cac7ddda3c6d1aec702cb59ddcdf93e11f6670ab481a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26549e00b6d46fa46c8ccbe9409b780a1cd0dd6d8573c24ca4ba77b8203bbccc
[INFO] running `Command { std: "docker" "start" "-a" "26549e00b6d46fa46c8ccbe9409b780a1cd0dd6d8573c24ca4ba77b8203bbccc", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling bytecheck v0.6.5
[INFO] [stderr]    Compiling capnp v0.14.3
[INFO] [stderr]    Compiling multimap v0.8.3
[INFO] [stderr]    Compiling plotters-backend v0.3.2
[INFO] [stderr]    Compiling rend v0.3.2
[INFO] [stderr]    Compiling heapless v0.7.4
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling rkyv v0.7.8
[INFO] [stderr]    Compiling rle-decode-fast v1.0.1
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling ahash v0.4.7
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling seahash v4.1.0
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling postcard-cobs v0.1.5-pre
[INFO] [stderr]    Compiling bytemuck v1.7.2
[INFO] [stderr]    Compiling nachricht v0.2.0
[INFO] [stderr]    Compiling abomonation v0.7.3
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling libflate_lz77 v1.1.0
[INFO] [stderr]    Compiling which v4.2.2
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling hash32 v0.2.1
[INFO] [stderr]    Compiling rmp v0.8.10
[INFO] [stderr]    Compiling plotters-svg v0.3.1
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling libflate v1.1.0
[INFO] [stderr]    Compiling prost-build v0.7.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling capnpc v0.14.4
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling criterion-plot v0.4.4
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling borsh-schema-derive-internal v0.9.1
[INFO] [stderr]    Compiling borsh-derive-internal v0.9.1
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling prost-derive v0.7.0
[INFO] [stderr]    Compiling ptr_meta_derive v0.1.4
[INFO] [stderr]    Compiling bytecheck_derive v0.6.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling rkyv_derive v0.7.8
[INFO] [stderr]    Compiling speedy-derive v0.7.1
[INFO] [stderr]    Compiling alkahest-proc v0.1.4
[INFO] [stderr]    Compiling abomonation_derive v0.5.0
[INFO] [stderr]    Compiling ptr_meta v0.1.4
[INFO] [stderr]    Compiling alkahest v0.1.4
[INFO] [stdout] error[E0658]: use of unstable library feature 'array_map'
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/alkahest-0.1.4/src/array.rs:22:16
[INFO] [stdout]    |
[INFO] [stdout] 22 |         packed.map(|packed| T::unpack(packed, input))
[INFO] [stdout]    |                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #75243 <https://github.com/rust-lang/rust/issues/75243> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'array_map'
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/alkahest-0.1.4/src/array.rs:35:27
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let packed = self.map(|pack| {
[INFO] [stdout]    |                           ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #75243 <https://github.com/rust-lang/rust/issues/75243> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `alkahest`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "26549e00b6d46fa46c8ccbe9409b780a1cd0dd6d8573c24ca4ba77b8203bbccc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26549e00b6d46fa46c8ccbe9409b780a1cd0dd6d8573c24ca4ba77b8203bbccc", kill_on_drop: false }`
[INFO] [stdout] 26549e00b6d46fa46c8ccbe9409b780a1cd0dd6d8573c24ca4ba77b8203bbccc
