[INFO] updating cached repository techgeek1/eden-math
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/techgeek1/eden-math
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/techgeek1/eden-math" "work/ex/beta-1.38-1/sources/1.37.0/gh/techgeek1/eden-math"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/techgeek1/eden-math'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/techgeek1/eden-math" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/techgeek1/eden-math"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/techgeek1/eden-math'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 52d99d744fb4581181d4ab13fe5ccc386361f2c7
[INFO] sha for GitHub repo techgeek1/eden-math: 52d99d744fb4581181d4ab13fe5ccc386361f2c7
[INFO] validating manifest of techgeek1/eden-math 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 techgeek1/eden-math 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 techgeek1/eden-math
[INFO] finished frobbing techgeek1/eden-math
[INFO] frobbed toml for techgeek1/eden-math written to work/ex/beta-1.38-1/sources/1.37.0/gh/techgeek1/eden-math/Cargo.toml
[INFO] started frobbing techgeek1/eden-math
[INFO] finished frobbing techgeek1/eden-math
[INFO] frobbed toml for techgeek1/eden-math written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/techgeek1/eden-math/Cargo.toml
[INFO] crate techgeek1/eden-math 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 techgeek1/eden-math 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/techgeek1/eden-math:/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] 34a833e3cfcc80eb80c083d9d5fbe52fe4ac5f0156929307a6ef8036e2ecf906
[INFO] running `"docker" "start" "-a" "34a833e3cfcc80eb80c083d9d5fbe52fe4ac5f0156929307a6ef8036e2ecf906"`
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling eden-math v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the feature `const_generics` is incomplete and may cause the compiler to crash
[INFO] [stderr]  --> src/lib.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(const_generics)]
[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(const_fn)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(const_generics)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(clamp)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![feature(fixed_size_array)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | #![feature(trait_alias)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `abs_diff_eq`, `relative_eq`, `ulps_eq`
[INFO] [stderr]  --> src/quaternion/mod.rs:4:14
[INFO] [stderr]   |
[INFO] [stderr] 4 | use approx::{abs_diff_eq, relative_eq, ulps_eq, AbsDiffEq, RelativeEq, UlpsEq};
[INFO] [stderr]   |              ^^^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `eden-math`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "34a833e3cfcc80eb80c083d9d5fbe52fe4ac5f0156929307a6ef8036e2ecf906"`
[INFO] running `"docker" "rm" "-f" "34a833e3cfcc80eb80c083d9d5fbe52fe4ac5f0156929307a6ef8036e2ecf906"`
[INFO] [stdout] 34a833e3cfcc80eb80c083d9d5fbe52fe4ac5f0156929307a6ef8036e2ecf906