[INFO] updating cached repository DutchGhost/Genertools
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/DutchGhost/Genertools
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/DutchGhost/Genertools" "work/ex/beta-1.38-1/sources/1.37.0/gh/DutchGhost/Genertools"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/DutchGhost/Genertools'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/DutchGhost/Genertools" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/DutchGhost/Genertools"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/DutchGhost/Genertools'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] be823d1781547c4768ba1bf75abbaf632d56ca94
[INFO] sha for GitHub repo DutchGhost/Genertools: be823d1781547c4768ba1bf75abbaf632d56ca94
[INFO] validating manifest of DutchGhost/Genertools 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 DutchGhost/Genertools 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 DutchGhost/Genertools
[INFO] finished frobbing DutchGhost/Genertools
[INFO] frobbed toml for DutchGhost/Genertools written to work/ex/beta-1.38-1/sources/1.37.0/gh/DutchGhost/Genertools/Cargo.toml
[INFO] started frobbing DutchGhost/Genertools
[INFO] finished frobbing DutchGhost/Genertools
[INFO] frobbed toml for DutchGhost/Genertools written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/DutchGhost/Genertools/Cargo.toml
[INFO] crate DutchGhost/Genertools 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 DutchGhost/Genertools 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/gh/DutchGhost/Genertools:/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] 053aca595beb4cd5d9be4a98679491ab0cdc4b88eea4f36c74e7c1d272edcdf3
[INFO] running `"docker" "start" "-a" "053aca595beb4cd5d9be4a98679491ab0cdc4b88eea4f36c74e7c1d272edcdf3"`
[INFO] [stderr]    Compiling genertools v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved import `std::pin::PinMut`
[INFO] [stderr]  --> src/aspin.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::pin::PinMut;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^ no `PinMut` in `pin`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::pin::PinMut`
[INFO] [stderr]  --> src/gentrait.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::pin::PinMut;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^ no `PinMut` in `pin`
[INFO] [stderr] 
[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(generators, generator_trait, pin)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::GeneratorState`
[INFO] [stderr]  --> src/iter.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::ops::GeneratorState;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `'a` is never used
[INFO] [stderr]    --> src/gentrait.rs:161:17
[INFO] [stderr]     |
[INFO] [stderr] 161 | pub struct Iter<'a, G: 'a>(Option<PinMut<'a, G>>);
[INFO] [stderr]     |                 ^^ unused parameter
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider removing `'a` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `G` is never used
[INFO] [stderr]    --> src/gentrait.rs:161:21
[INFO] [stderr]     |
[INFO] [stderr] 161 | pub struct Iter<'a, G: 'a>(Option<PinMut<'a, G>>);
[INFO] [stderr]     |                     ^ unused parameter
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider removing `G` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0392, E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0392`.
[INFO] [stderr] error: Could not compile `genertools`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "053aca595beb4cd5d9be4a98679491ab0cdc4b88eea4f36c74e7c1d272edcdf3"`
[INFO] running `"docker" "rm" "-f" "053aca595beb4cd5d9be4a98679491ab0cdc4b88eea4f36c74e7c1d272edcdf3"`
[INFO] [stdout] 053aca595beb4cd5d9be4a98679491ab0cdc4b88eea4f36c74e7c1d272edcdf3