[INFO] crate tari_crypto 0.0.2 is already in cache
[INFO] extracting crate tari_crypto 0.0.2 into work/ex/beta-1.38-1/sources/1.37.0/reg/tari_crypto/0.0.2
[INFO] extracting crate tari_crypto 0.0.2 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tari_crypto/0.0.2
[INFO] validating manifest of tari_crypto-0.0.2 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 tari_crypto-0.0.2 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 tari_crypto-0.0.2
[INFO] finished frobbing tari_crypto-0.0.2
[INFO] frobbed toml for tari_crypto-0.0.2 written to work/ex/beta-1.38-1/sources/1.37.0/reg/tari_crypto/0.0.2/Cargo.toml
[INFO] started frobbing tari_crypto-0.0.2
[INFO] finished frobbing tari_crypto-0.0.2
[INFO] frobbed toml for tari_crypto-0.0.2 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tari_crypto/0.0.2/Cargo.toml
[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 tari_crypto-0.0.2 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/reg/tari_crypto/0.0.2:/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] 60a7e195a1a57525cfc84203cbb553396249c4cad16ff4e42912375f2c722a97
[INFO] running `"docker" "start" "-a" "60a7e195a1a57525cfc84203cbb553396249c4cad16ff4e42912375f2c722a97"`
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling merlin v1.2.0
[INFO] [stderr]    Compiling rmp v0.8.7
[INFO] [stderr]    Compiling curve25519-dalek v1.2.3
[INFO] [stderr]    Compiling sha3 v0.8.2
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling rmp-serde v0.13.7
[INFO] [stderr]    Compiling tari_utilities v0.0.2
[INFO] [stderr]    Compiling bulletproofs v1.0.4
[INFO] [stderr] error: couldn't read /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/bulletproofs-1.0.4/src/../../docs/range-proof-protocol.md: No such file or directory (os error 2)
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/bulletproofs-1.0.4/src/range_proof/mod.rs:2:18
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![doc(include = "../../docs/range-proof-protocol.md")]
[INFO] [stderr]   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ couldn't read file
[INFO] [stderr]   |
[INFO] [stderr]   = help: external doc paths are relative to the crate root
[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/bulletproofs-1.0.4/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(nll)]
[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/bulletproofs-1.0.4/src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(external_doc)]
[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/bulletproofs-1.0.4/src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(try_trait)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `bulletproofs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "60a7e195a1a57525cfc84203cbb553396249c4cad16ff4e42912375f2c722a97"`
[INFO] running `"docker" "rm" "-f" "60a7e195a1a57525cfc84203cbb553396249c4cad16ff4e42912375f2c722a97"`
[INFO] [stdout] 60a7e195a1a57525cfc84203cbb553396249c4cad16ff4e42912375f2c722a97