[INFO] updating cached repository jazz-lang/Jazz-jit
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jazz-lang/Jazz-jit
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jazz-lang/Jazz-jit" "work/ex/beta-1.37-6/sources/1.36.0/gh/jazz-lang/Jazz-jit"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/jazz-lang/Jazz-jit'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jazz-lang/Jazz-jit" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jazz-lang/Jazz-jit"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jazz-lang/Jazz-jit'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e88a8babeeefa89d6e903e8e96bc7da7b9be4a20
[INFO] sha for GitHub repo jazz-lang/Jazz-jit: e88a8babeeefa89d6e903e8e96bc7da7b9be4a20
[INFO] validating manifest of jazz-lang/Jazz-jit on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jazz-lang/Jazz-jit on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jazz-lang/Jazz-jit
[INFO] finished frobbing jazz-lang/Jazz-jit
[INFO] frobbed toml for jazz-lang/Jazz-jit written to work/ex/beta-1.37-6/sources/1.36.0/gh/jazz-lang/Jazz-jit/Cargo.toml
[INFO] started frobbing jazz-lang/Jazz-jit
[INFO] finished frobbing jazz-lang/Jazz-jit
[INFO] frobbed toml for jazz-lang/Jazz-jit written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jazz-lang/Jazz-jit/Cargo.toml
[INFO] crate jazz-lang/Jazz-jit already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jazz-lang/Jazz-jit/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing jazz-lang/Jazz-jit against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jazz-lang/Jazz-jit:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 498496aba476a49a989986058e0fc0c0f5ec35469b17e225706e05c9ad35e505
[INFO] running `"docker" "start" "-a" "498496aba476a49a989986058e0fc0c0f5ec35469b17e225706e05c9ad35e505"`
[INFO] [stderr]    Compiling cbindgen v0.9.0
[INFO] [stderr]    Compiling capstone-sys v0.10.0
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.98
[INFO] [stderr]    Compiling proc-macro-hack v0.5.8
[INFO] [stderr]    Compiling paste-impl v0.1.5
[INFO] [stderr]    Compiling paste v0.1.5
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]    Compiling capstone v0.6.0
[INFO] [stderr]    Compiling toml v0.5.1
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]    Compiling jazz-jit v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 41s
[INFO] running `"docker" "inspect" "498496aba476a49a989986058e0fc0c0f5ec35469b17e225706e05c9ad35e505"`
[INFO] running `"docker" "rm" "-f" "498496aba476a49a989986058e0fc0c0f5ec35469b17e225706e05c9ad35e505"`
[INFO] [stdout] 498496aba476a49a989986058e0fc0c0f5ec35469b17e225706e05c9ad35e505
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jazz-lang/Jazz-jit:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2717714334f867d6708b03fa553924b8900312c670ee445cb216344b542fe248
[INFO] running `"docker" "start" "-a" "2717714334f867d6708b03fa553924b8900312c670ee445cb216344b542fe248"`
[INFO] [stderr]    Compiling jazz-jit v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the beta release channel
[INFO] [stderr]  --> examples/float4.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(repr_simd)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `jazz_jit::avx::*`
[INFO] [stderr]  --> examples/float4.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use jazz_jit::avx::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `jazz_jit::MachineMode::Float32`
[INFO] [stderr]   --> examples/float4.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use jazz_jit::MachineMode::Float32;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/int_add.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let mut cs = Capstone::new().x86()
[INFO] [stderr]    |         ----^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `jazz-jit`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/call.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut cs = Capstone::new().x86()
[INFO] [stderr]    |         ----^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "2717714334f867d6708b03fa553924b8900312c670ee445cb216344b542fe248"`
[INFO] running `"docker" "rm" "-f" "2717714334f867d6708b03fa553924b8900312c670ee445cb216344b542fe248"`
[INFO] [stdout] 2717714334f867d6708b03fa553924b8900312c670ee445cb216344b542fe248