[INFO] updating cached repository Matt8898/rust-befunge-jit
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Matt8898/rust-befunge-jit
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Matt8898/rust-befunge-jit" "work/ex/beta-1.38-1/sources/1.37.0/gh/Matt8898/rust-befunge-jit"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Matt8898/rust-befunge-jit'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Matt8898/rust-befunge-jit" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Matt8898/rust-befunge-jit"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Matt8898/rust-befunge-jit'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6bb53df0d2e80d609df6d888883277f7a3493d39
[INFO] sha for GitHub repo Matt8898/rust-befunge-jit: 6bb53df0d2e80d609df6d888883277f7a3493d39
[INFO] validating manifest of Matt8898/rust-befunge-jit 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 Matt8898/rust-befunge-jit 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 Matt8898/rust-befunge-jit
[INFO] removed path dependency dynasm from Matt8898/rust-befunge-jit
[INFO] removed path dependency dynasmrt from Matt8898/rust-befunge-jit
[INFO] finished frobbing Matt8898/rust-befunge-jit
[INFO] frobbed toml for Matt8898/rust-befunge-jit written to work/ex/beta-1.38-1/sources/1.37.0/gh/Matt8898/rust-befunge-jit/Cargo.toml
[INFO] started frobbing Matt8898/rust-befunge-jit
[INFO] removed path dependency dynasm from Matt8898/rust-befunge-jit
[INFO] removed path dependency dynasmrt from Matt8898/rust-befunge-jit
[INFO] finished frobbing Matt8898/rust-befunge-jit
[INFO] frobbed toml for Matt8898/rust-befunge-jit written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Matt8898/rust-befunge-jit/Cargo.toml
[INFO] crate Matt8898/rust-befunge-jit 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]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Matt8898/rust-befunge-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" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Matt8898/rust-befunge-jit against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Matt8898/rust-befunge-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] e95f74c036af6029d5565cad22e5aa528ea1138f76b673f6b72e81286068b2ec
[INFO] running `"docker" "start" "-a" "e95f74c036af6029d5565cad22e5aa528ea1138f76b673f6b72e81286068b2ec"`
[INFO] [stderr] warning: dependency (dynasm) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] warning: dependency (dynasmrt) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling memmap v0.6.2
[INFO] [stderr]    Compiling dynasmrt v0.3.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling dynasm v0.3.2
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable 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 stable 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" "e95f74c036af6029d5565cad22e5aa528ea1138f76b673f6b72e81286068b2ec"`
[INFO] running `"docker" "rm" "-f" "e95f74c036af6029d5565cad22e5aa528ea1138f76b673f6b72e81286068b2ec"`
[INFO] [stdout] e95f74c036af6029d5565cad22e5aa528ea1138f76b673f6b72e81286068b2ec