[INFO] cloning repository https://github.com/Bl4ckb0ne/bintree
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Bl4ckb0ne/bintree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBl4ckb0ne%2Fbintree"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBl4ckb0ne%2Fbintree'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9d60c5c123b4ef26bdf2cc3b0b821101d7ce7f2e
[INFO] testing Bl4ckb0ne/bintree against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBl4ckb0ne%2Fbintree" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Bl4ckb0ne/bintree on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Bl4ckb0ne/bintree
[INFO] finished tweaking git repo https://github.com/Bl4ckb0ne/bintree
[INFO] tweaked toml for git repo https://github.com/Bl4ckb0ne/bintree written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Bl4ckb0ne/bintree already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ea40efa8ba0ceaed62baf6515473198af19562679a6fa3afd6e173129e5fc6e2
[INFO] running `"docker" "start" "-a" "ea40efa8ba0ceaed62baf6515473198af19562679a6fa3afd6e173129e5fc6e2"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling bintree v0.1.0 (/opt/rustwide/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; 1 warning emitted
[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" "ea40efa8ba0ceaed62baf6515473198af19562679a6fa3afd6e173129e5fc6e2"`
[INFO] running `"docker" "rm" "-f" "ea40efa8ba0ceaed62baf6515473198af19562679a6fa3afd6e173129e5fc6e2"`
[INFO] [stdout] ea40efa8ba0ceaed62baf6515473198af19562679a6fa3afd6e173129e5fc6e2