[INFO] cloning repository https://github.com/fritzprix/rust_study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fritzprix/rust_study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffritzprix%2Frust_study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffritzprix%2Frust_study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 47b2ac13b9ff3ed295a290ae1be13f901ff391dd
[INFO] building fritzprix/rust_study against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffritzprix%2Frust_study" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fritzprix/rust_study on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fritzprix/rust_study
[INFO] finished tweaking git repo https://github.com/fritzprix/rust_study
[INFO] tweaked toml for git repo https://github.com/fritzprix/rust_study written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/fritzprix/rust_study already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 799e784cede5b5c80d74fc45a2abf59c4bf1f7279f97a07c328b82ec5e78f25f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "799e784cede5b5c80d74fc45a2abf59c4bf1f7279f97a07c328b82ec5e78f25f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "799e784cede5b5c80d74fc45a2abf59c4bf1f7279f97a07c328b82ec5e78f25f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "799e784cede5b5c80d74fc45a2abf59c4bf1f7279f97a07c328b82ec5e78f25f", kill_on_drop: false }`
[INFO] [stdout] 799e784cede5b5c80d74fc45a2abf59c4bf1f7279f97a07c328b82ec5e78f25f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 86a20c1106cdc3518d3e60f583f16078bb9fb0a564254237c1fb96f4b06a7729
[INFO] running `Command { std: "docker" "start" "-a" "86a20c1106cdc3518d3e60f583f16078bb9fb0a564254237c1fb96f4b06a7729", kill_on_drop: false }`
[INFO] [stderr]    Compiling collection v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp::PartialOrd`
[INFO] [stdout]  --> src/map/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp::PartialOrd;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key_hash`
[INFO] [stdout]    --> src/map/tree.rs:328:13
[INFO] [stdout]     |
[INFO] [stdout] 328 |         let key_hash = Self::hash(key);
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_key_hash`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `another`
[INFO] [stdout]    --> src/map/tree.rs:336:19
[INFO] [stdout]     |
[INFO] [stdout] 336 |     fn join(self, another: Self) -> Self {
[INFO] [stdout]     |                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_another`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/map/tree.rs:364:60
[INFO] [stdout]     |
[INFO] [stdout] 364 |     fn locate(link : &mut Option<Box<ABinaryTreeNode<V>>>, key: u64) -> &mut Option<Box<ABinaryTreeNode<V>>>
[INFO] [stdout]     |                                                            ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0505]: cannot move out of `link` because it is borrowed
[INFO] [stdout]    --> src/map/tree.rs:191:13
[INFO] [stdout]     |
[INFO] [stdout] 188 |       fn right_leaf(link : &mut Link<T>) -> &mut Link<T> {
[INFO] [stdout]     |                            - let's call the lifetime of this reference `'1`
[INFO] [stdout] 189 | /         match link {
[INFO] [stdout] 190 | |             &mut Some(ref mut current) if current.right.is_some() => BinaryTreeNode::right_leaf(&mut current.right),
[INFO] [stdout]     | |                       --------------- borrow of `link.0` occurs here
[INFO] [stdout] 191 | |             other => return other
[INFO] [stdout]     | |             ^^^^^ move out of `link` occurs here
[INFO] [stdout] 192 | |         }
[INFO] [stdout]     | |_________- returning this value requires that `link.0` is borrowed for `'1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0505]: cannot move out of `link` because it is borrowed
[INFO] [stdout]    --> src/map/tree.rs:213:13
[INFO] [stdout]     |
[INFO] [stdout] 210 |       fn left_leaf(link : &mut Link<T>) -> &mut Link<T> {
[INFO] [stdout]     |                           - let's call the lifetime of this reference `'1`
[INFO] [stdout] 211 | /         match link {
[INFO] [stdout] 212 | |             &mut Some(ref mut current) if current.left.is_some() => BinaryTreeNode::left_leaf(&mut current.left),
[INFO] [stdout]     | |                       --------------- borrow of `link.0` occurs here
[INFO] [stdout] 213 | |             other => return other
[INFO] [stdout]     | |             ^^^^^ move out of `link` occurs here
[INFO] [stdout] 214 | |         }
[INFO] [stdout]     | |_________- returning this value requires that `link.0` is borrowed for `'1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0505`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `collection`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "86a20c1106cdc3518d3e60f583f16078bb9fb0a564254237c1fb96f4b06a7729", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86a20c1106cdc3518d3e60f583f16078bb9fb0a564254237c1fb96f4b06a7729", kill_on_drop: false }`
[INFO] [stdout] 86a20c1106cdc3518d3e60f583f16078bb9fb0a564254237c1fb96f4b06a7729
