[INFO] updating cached repository rsb007/mocking_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rsb007/mocking_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rsb007/mocking_rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/rsb007/mocking_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/rsb007/mocking_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rsb007/mocking_rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rsb007/mocking_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rsb007/mocking_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7fb43667e137e278ea077677b1e298b6588d8d7a
[INFO] sha for GitHub repo rsb007/mocking_rust: 7fb43667e137e278ea077677b1e298b6588d8d7a
[INFO] validating manifest of rsb007/mocking_rust 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 rsb007/mocking_rust 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 rsb007/mocking_rust
[INFO] finished frobbing rsb007/mocking_rust
[INFO] frobbed toml for rsb007/mocking_rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/rsb007/mocking_rust/Cargo.toml
[INFO] started frobbing rsb007/mocking_rust
[INFO] finished frobbing rsb007/mocking_rust
[INFO] frobbed toml for rsb007/mocking_rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rsb007/mocking_rust/Cargo.toml
[INFO] crate rsb007/mocking_rust 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing rsb007/mocking_rust 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-2/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/rsb007/mocking_rust:/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] 63cd2890d0aa06878f9ba9dac80bc5c61df17388e1fada7fbff1661e39a47b41
[INFO] running `"docker" "start" "-a" "63cd2890d0aa06878f9ba9dac80bc5c61df17388e1fada7fbff1661e39a47b41"`
[INFO] [stderr]    Compiling uuid v0.7.1
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling scheduled-thread-pool v0.2.0
[INFO] [stderr]    Compiling lz4-compress v0.1.0
[INFO] [stderr]    Compiling snap v0.2.5
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling r2d2 v0.8.3
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling cdrs v2.0.0-beta.4
[INFO] [stderr]    Compiling mocktopus_macros v0.5.0
[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/mocktopus_macros-0.5.0/src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![feature(proc_macro_diagnostic)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 `mocktopus_macros`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "63cd2890d0aa06878f9ba9dac80bc5c61df17388e1fada7fbff1661e39a47b41"`
[INFO] running `"docker" "rm" "-f" "63cd2890d0aa06878f9ba9dac80bc5c61df17388e1fada7fbff1661e39a47b41"`
[INFO] [stdout] 63cd2890d0aa06878f9ba9dac80bc5c61df17388e1fada7fbff1661e39a47b41