[INFO] updating cached repository nrc/rustw-test
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nrc/rustw-test
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nrc/rustw-test" "work/ex/beta-1.37-6/sources/1.36.0/gh/nrc/rustw-test"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/nrc/rustw-test'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nrc/rustw-test" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/nrc/rustw-test"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/nrc/rustw-test'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cea87d0762944f82448d9bf0dbf56b837fbd100e
[INFO] sha for GitHub repo nrc/rustw-test: cea87d0762944f82448d9bf0dbf56b837fbd100e
[INFO] validating manifest of nrc/rustw-test 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 nrc/rustw-test 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 nrc/rustw-test
[INFO] finished frobbing nrc/rustw-test
[INFO] frobbed toml for nrc/rustw-test written to work/ex/beta-1.37-6/sources/1.36.0/gh/nrc/rustw-test/Cargo.toml
[INFO] started frobbing nrc/rustw-test
[INFO] finished frobbing nrc/rustw-test
[INFO] frobbed toml for nrc/rustw-test written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/nrc/rustw-test/Cargo.toml
[INFO] crate nrc/rustw-test 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 nrc/rustw-test 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-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/nrc/rustw-test:/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] a640e7bf76dc60ca9924f1fe8138216162f361bc9c33af2d73041fbcc447ac28
[INFO] running `"docker" "start" "-a" "a640e7bf76dc60ca9924f1fe8138216162f361bc9c33af2d73041fbcc447ac28"`
[INFO] [stderr]    Compiling quote v0.2.3
[INFO] [stderr]    Compiling zero v0.1.2
[INFO] [stderr]    Compiling syn v0.8.7
[INFO] [stderr]    Compiling derive-new v0.3.0
[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/derive-new-0.3.0/src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(proc_macro, proc_macro_lib)]
[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 `derive-new`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a640e7bf76dc60ca9924f1fe8138216162f361bc9c33af2d73041fbcc447ac28"`
[INFO] running `"docker" "rm" "-f" "a640e7bf76dc60ca9924f1fe8138216162f361bc9c33af2d73041fbcc447ac28"`
[INFO] [stdout] a640e7bf76dc60ca9924f1fe8138216162f361bc9c33af2d73041fbcc447ac28