[INFO] updating cached repository PragmaTwice/risp
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/PragmaTwice/risp
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/PragmaTwice/risp" "work/ex/beta-1.37-6/sources/1.36.0/gh/PragmaTwice/risp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/PragmaTwice/risp'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/PragmaTwice/risp" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/PragmaTwice/risp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/PragmaTwice/risp'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8c4b2fca400c9a3c939c5f7e51e4d8908a7db17e
[INFO] sha for GitHub repo PragmaTwice/risp: 8c4b2fca400c9a3c939c5f7e51e4d8908a7db17e
[INFO] validating manifest of PragmaTwice/risp 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 PragmaTwice/risp 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 PragmaTwice/risp
[INFO] finished frobbing PragmaTwice/risp
[INFO] frobbed toml for PragmaTwice/risp written to work/ex/beta-1.37-6/sources/1.36.0/gh/PragmaTwice/risp/Cargo.toml
[INFO] started frobbing PragmaTwice/risp
[INFO] finished frobbing PragmaTwice/risp
[INFO] frobbed toml for PragmaTwice/risp written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/PragmaTwice/risp/Cargo.toml
[INFO] crate PragmaTwice/risp 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing PragmaTwice/risp against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/PragmaTwice/risp:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 9a435883111918ba8185e29fc43a1f04fa679964e28931e93b1efe0e61e38649
[INFO] running `"docker" "start" "-a" "9a435883111918ba8185e29fc43a1f04fa679964e28931e93b1efe0e61e38649"`
[INFO] [stderr]    Compiling risp v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(trace_macros)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(macro_literal_matcher)]
[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 `risp`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "9a435883111918ba8185e29fc43a1f04fa679964e28931e93b1efe0e61e38649"`
[INFO] running `"docker" "rm" "-f" "9a435883111918ba8185e29fc43a1f04fa679964e28931e93b1efe0e61e38649"`
[INFO] [stdout] 9a435883111918ba8185e29fc43a1f04fa679964e28931e93b1efe0e61e38649