[INFO] updating cached repository losfair/bfjit-osr
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/losfair/bfjit-osr
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/losfair/bfjit-osr" "work/ex/beta-1.38-1/sources/1.37.0/gh/losfair/bfjit-osr"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/losfair/bfjit-osr'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/losfair/bfjit-osr" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/losfair/bfjit-osr"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/losfair/bfjit-osr'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bd0357af838e07156f01dfa63609dc2afae72015
[INFO] sha for GitHub repo losfair/bfjit-osr: bd0357af838e07156f01dfa63609dc2afae72015
[INFO] validating manifest of losfair/bfjit-osr on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of losfair/bfjit-osr on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing losfair/bfjit-osr
[INFO] finished frobbing losfair/bfjit-osr
[INFO] frobbed toml for losfair/bfjit-osr written to work/ex/beta-1.38-1/sources/1.37.0/gh/losfair/bfjit-osr/Cargo.toml
[INFO] started frobbing losfair/bfjit-osr
[INFO] finished frobbing losfair/bfjit-osr
[INFO] frobbed toml for losfair/bfjit-osr written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/losfair/bfjit-osr/Cargo.toml
[INFO] crate losfair/bfjit-osr already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing losfair/bfjit-osr against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/losfair/bfjit-osr:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 5eafef683995b6c6c6a17e14291579272de3ee7d98071a409a43871382e0ea54
[INFO] running `"docker" "start" "-a" "5eafef683995b6c6c6a17e14291579272de3ee7d98071a409a43871382e0ea54"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling nix v0.13.0
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling memmap v0.6.2
[INFO] [stderr]    Compiling dynasmrt v0.3.1
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling dynasm v0.3.2
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/dynasm-0.3.2/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro_diagnostic)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/dynasm-0.3.2/src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(proc_macro_span)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `dynasm`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5eafef683995b6c6c6a17e14291579272de3ee7d98071a409a43871382e0ea54"`
[INFO] running `"docker" "rm" "-f" "5eafef683995b6c6c6a17e14291579272de3ee7d98071a409a43871382e0ea54"`
[INFO] [stdout] 5eafef683995b6c6c6a17e14291579272de3ee7d98071a409a43871382e0ea54