[INFO] updating cached repository Bl4ckb0ne/bintree
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Bl4ckb0ne/bintree
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Bl4ckb0ne/bintree" "work/ex/beta-1.38-1/sources/1.37.0/gh/Bl4ckb0ne/bintree"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Bl4ckb0ne/bintree'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Bl4ckb0ne/bintree" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Bl4ckb0ne/bintree"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Bl4ckb0ne/bintree'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9d60c5c123b4ef26bdf2cc3b0b821101d7ce7f2e
[INFO] sha for GitHub repo Bl4ckb0ne/bintree: 9d60c5c123b4ef26bdf2cc3b0b821101d7ce7f2e
[INFO] validating manifest of Bl4ckb0ne/bintree 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 Bl4ckb0ne/bintree 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 Bl4ckb0ne/bintree
[INFO] finished frobbing Bl4ckb0ne/bintree
[INFO] frobbed toml for Bl4ckb0ne/bintree written to work/ex/beta-1.38-1/sources/1.37.0/gh/Bl4ckb0ne/bintree/Cargo.toml
[INFO] started frobbing Bl4ckb0ne/bintree
[INFO] finished frobbing Bl4ckb0ne/bintree
[INFO] frobbed toml for Bl4ckb0ne/bintree written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Bl4ckb0ne/bintree/Cargo.toml
[INFO] crate Bl4ckb0ne/bintree 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 Bl4ckb0ne/bintree 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Bl4ckb0ne/bintree:/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] 0d36c6de13476cf24f834e3e999dd5b180ce85ff4d8ba5ae2fd26cb29cce3c50
[INFO] running `"docker" "start" "-a" "0d36c6de13476cf24f834e3e999dd5b180ce85ff4d8ba5ae2fd26cb29cce3c50"`
[INFO] [stderr]    Compiling bintree v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/main.rs:23:11
[INFO] [stderr]    |
[INFO] [stderr] 23 |         if(self.left.is_some() && self.right.is_some())
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0507]: cannot move out of `self.right` which is behind a mutable reference
[INFO] [stderr]   --> src/main.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |             self.right.unwrap().insert(data);
[INFO] [stderr]    |             ^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             move occurs because `self.right` has type `std::option::Option<std::boxed::Box<Node<T>>>`, which does not implement the `Copy` trait
[INFO] [stderr]    |             help: consider borrowing the `Option`'s content: `self.right.as_ref()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0507`.
[INFO] [stderr] error: Could not compile `bintree`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "0d36c6de13476cf24f834e3e999dd5b180ce85ff4d8ba5ae2fd26cb29cce3c50"`
[INFO] running `"docker" "rm" "-f" "0d36c6de13476cf24f834e3e999dd5b180ce85ff4d8ba5ae2fd26cb29cce3c50"`
[INFO] [stdout] 0d36c6de13476cf24f834e3e999dd5b180ce85ff4d8ba5ae2fd26cb29cce3c50