[INFO] crate simd-json 0.3.16 is already in cache
[INFO] testing simd-json-0.3.16 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate simd-json 0.3.16 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate simd-json 0.3.16 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4/source/.cargo/config
[INFO] started tweaking crates.io crate simd-json 0.3.16
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate simd-json 0.3.16
[INFO] tweaked toml for crates.io crate simd-json 0.3.16 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate simd-json 0.3.16 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48d2c36eb1baa99caa8a04a5fc10e124a737dbca792bec3ade7bc167019e518e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "48d2c36eb1baa99caa8a04a5fc10e124a737dbca792bec3ade7bc167019e518e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48d2c36eb1baa99caa8a04a5fc10e124a737dbca792bec3ade7bc167019e518e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48d2c36eb1baa99caa8a04a5fc10e124a737dbca792bec3ade7bc167019e518e", kill_on_drop: false }`
[INFO] [stdout] 48d2c36eb1baa99caa8a04a5fc10e124a737dbca792bec3ade7bc167019e518e
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bfd0fedb564a08abd85be4275f5f65ab09fe3e1c18092fdb46a81d82e21c3361
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bfd0fedb564a08abd85be4275f5f65ab09fe3e1c18092fdb46a81d82e21c3361", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.34
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling ahash v0.3.8
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling float-cmp v0.7.0
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling halfbrown v0.1.11
[INFO] [stderr]    Compiling value-trait v0.1.12
[INFO] [stderr]    Compiling simd-json v0.3.16 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:202:86
[INFO] [stdout]     |
[INFO] [stdout] 202 | 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`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "bfd0fedb564a08abd85be4275f5f65ab09fe3e1c18092fdb46a81d82e21c3361", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfd0fedb564a08abd85be4275f5f65ab09fe3e1c18092fdb46a81d82e21c3361", kill_on_drop: false }`
[INFO] [stdout] bfd0fedb564a08abd85be4275f5f65ab09fe3e1c18092fdb46a81d82e21c3361