[INFO] crate difference_engine 0.1.0 is already in cache
[INFO] extracting crate difference_engine 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/difference_engine/0.1.0
[INFO] extracting crate difference_engine 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/difference_engine/0.1.0
[INFO] validating manifest of difference_engine-0.1.0 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 difference_engine-0.1.0 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 difference_engine-0.1.0
[INFO] finished frobbing difference_engine-0.1.0
[INFO] frobbed toml for difference_engine-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/difference_engine/0.1.0/Cargo.toml
[INFO] started frobbing difference_engine-0.1.0
[INFO] finished frobbing difference_engine-0.1.0
[INFO] frobbed toml for difference_engine-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/difference_engine/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 difference_engine-0.1.0 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-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/difference_engine/0.1.0:/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] 6816ab74ab5318fa3bf4b77638595b64f7b27d2b9fb1ca10bebae8dfdb493589
[INFO] running `"docker" "start" "-a" "6816ab74ab5318fa3bf4b77638595b64f7b27d2b9fb1ca10bebae8dfdb493589"`
[INFO] [stderr]    Compiling strsim v0.4.1
[INFO] [stderr]    Compiling ansi_term v0.7.5
[INFO] [stderr]    Compiling colored v1.2.0
[INFO] [stderr]    Compiling target_build_utils v0.1.2
[INFO] [stderr]    Compiling clap v2.5.2
[INFO] [stderr]    Compiling libloading v0.2.4
[INFO] [stderr]    Compiling difference_engine v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead.
[INFO] [stderr]   --> src/main.rs:83:12
[INFO] [stderr]    |
[INFO] [stderr] 83 |     .chain(env::home_dir().into_iter().map(|d| d.join(".deng").join("languages").join("raw")))
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead.
[INFO] [stderr]    --> src/main.rs:104:12
[INFO] [stderr]     |
[INFO] [stderr] 104 |     .chain(env::home_dir().into_iter().map(|d| d.join(".deng").join("presentations").join("raw")))
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0034]: multiple applicable items in scope
[INFO] [stderr]   --> src/main.rs:85:6
[INFO] [stderr]    |
[INFO] [stderr] 85 |     .flatten()
[INFO] [stderr]    |      ^^^^^^^ multiple `flatten` found
[INFO] [stderr]    |
[INFO] [stderr]    = note: candidate #1 is defined in an impl of the trait `std::iter::Iterator` for the type `std::iter::FlatMap<_, _, _>`
[INFO] [stderr]    = note: candidate #2 is defined in an impl of the trait `itertools::Itertools` for the type `_`
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
[INFO] [stderr]   --> src/main.rs:92:16
[INFO] [stderr]    |
[INFO] [stderr] 92 |     .flat_map(|p| RawPluginLanguage::load(&p).into_iter()) {
[INFO] [stderr]    |                ^ borrow the `Path` instead
[INFO] [stderr]    |
[INFO] [stderr]    = help: within `std::path::Path`, the trait `std::marker::Sized` is not implemented for `[u8]`
[INFO] [stderr]    = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
[INFO] [stderr]    = note: required because it appears within the type `std::path::Path`
[INFO] [stderr]    = note: all local variables must have a statically known size
[INFO] [stderr]    = help: unsized locals are gated as an unstable feature
[INFO] [stderr] 
[INFO] [stderr] error[E0034]: multiple applicable items in scope
[INFO] [stderr]    --> src/main.rs:106:6
[INFO] [stderr]     |
[INFO] [stderr] 106 |     .flatten()
[INFO] [stderr]     |      ^^^^^^^ multiple `flatten` found
[INFO] [stderr]     |
[INFO] [stderr]     = note: candidate #1 is defined in an impl of the trait `std::iter::Iterator` for the type `std::iter::FlatMap<_, _, _>`
[INFO] [stderr]     = note: candidate #2 is defined in an impl of the trait `itertools::Itertools` for the type `_`
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
[INFO] [stderr]    --> src/main.rs:113:16
[INFO] [stderr]     |
[INFO] [stderr] 113 |     .flat_map(|p| RawPluginPresentation::load(&p).into_iter()) {
[INFO] [stderr]     |                ^ borrow the `Path` instead
[INFO] [stderr]     |
[INFO] [stderr]     = help: within `std::path::Path`, the trait `std::marker::Sized` is not implemented for `[u8]`
[INFO] [stderr]     = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
[INFO] [stderr]     = note: required because it appears within the type `std::path::Path`
[INFO] [stderr]     = note: all local variables must have a statically known size
[INFO] [stderr]     = help: unsized locals are gated as an unstable feature
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0034, E0277.
[INFO] [stderr] For more information about an error, try `rustc --explain E0034`.
[INFO] [stderr] error: Could not compile `difference_engine`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "6816ab74ab5318fa3bf4b77638595b64f7b27d2b9fb1ca10bebae8dfdb493589"`
[INFO] running `"docker" "rm" "-f" "6816ab74ab5318fa3bf4b77638595b64f7b27d2b9fb1ca10bebae8dfdb493589"`
[INFO] [stdout] 6816ab74ab5318fa3bf4b77638595b64f7b27d2b9fb1ca10bebae8dfdb493589