[INFO] fetching crate simd-json 0.4.7...
[INFO] testing simd-json-0.4.7 against 1.55.0 for beta-1.56-1
[INFO] extracting crate simd-json 0.4.7 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate simd-json 0.4.7 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-14/source/.cargo/config
[INFO] started tweaking crates.io crate simd-json 0.4.7
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate simd-json 0.4.7
[INFO] tweaked toml for crates.io crate simd-json 0.4.7 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate simd-json 0.4.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `rust-version` is not supported on this version of Cargo and will be ignored
[INFO] [stderr] 
[INFO] [stderr] this Cargo does not support nightly features, but if you
[INFO] [stderr] switch to nightly channel you can add
[INFO] [stderr] `cargo-features = ["rust-version"]` to enable this feature
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7bafd11a706ba3046addc621ceb1c49bdcb1bcc412a8b5d15ce5291f7fc96a32
[INFO] running `Command { std: "docker" "start" "-a" "7bafd11a706ba3046addc621ceb1c49bdcb1bcc412a8b5d15ce5291f7fc96a32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bafd11a706ba3046addc621ceb1c49bdcb1bcc412a8b5d15ce5291f7fc96a32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bafd11a706ba3046addc621ceb1c49bdcb1bcc412a8b5d15ce5291f7fc96a32", kill_on_drop: false }`
[INFO] [stdout] 7bafd11a706ba3046addc621ceb1c49bdcb1bcc412a8b5d15ce5291f7fc96a32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db4a3db96e23ae78b67a0e41a5ffb3f2b3bc97a5562162f7fade445851543e02
[INFO] running `Command { std: "docker" "start" "-a" "db4a3db96e23ae78b67a0e41a5ffb3f2b3bc97a5562162f7fade445851543e02", kill_on_drop: false }`
[INFO] [stderr] warning: `rust-version` is not supported on this version of Cargo and will be ignored
[INFO] [stderr] 
[INFO] [stderr] this Cargo does not support nightly features, but if you
[INFO] [stderr] switch to nightly channel you can add
[INFO] [stderr] `cargo-features = ["rust-version"]` to enable this feature
[INFO] [stderr]    Compiling syn v1.0.34
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling ahash v0.3.8
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling simdutf8 v0.1.3
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]    Compiling float-cmp v0.8.0
[INFO] [stderr]    Compiling halfbrown v0.1.11
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling value-trait v0.2.4
[INFO] [stderr]    Compiling simd-json v0.4.7 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:215:86
[INFO] [stdout]     |
[INFO] [stdout] 215 | fn please_compile_with_a_simd_compatible_cpu_setting_read_the_simdjonsrs_readme() -> ! {}
[INFO] [stdout]     |    ----------------------------------------------------------------------------      ^ expected `!`, found `()`
[INFO] [stdout]     |    |
[INFO] [stdout]     |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout]     |
[INFO] [stdout]     = note:   expected type `!`
[INFO] [stdout]             found unit type `()`
[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 E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `simd-json` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "db4a3db96e23ae78b67a0e41a5ffb3f2b3bc97a5562162f7fade445851543e02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db4a3db96e23ae78b67a0e41a5ffb3f2b3bc97a5562162f7fade445851543e02", kill_on_drop: false }`
[INFO] [stdout] db4a3db96e23ae78b67a0e41a5ffb3f2b3bc97a5562162f7fade445851543e02