[INFO] cloning repository https://github.com/thoiberg/algo-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thoiberg/algo-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthoiberg%2Falgo-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthoiberg%2Falgo-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ff370618f21fe4161d1c4d0ff4bcfd04866e6270
[INFO] checking thoiberg/algo-playground against try#bac5816c5f3d02cebd0599070af62d1782530294 for pr-150408
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthoiberg%2Falgo-playground" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/thoiberg/algo-playground
[INFO] finished tweaking git repo https://github.com/thoiberg/algo-playground
[INFO] tweaked toml for git repo https://github.com/thoiberg/algo-playground written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/thoiberg/algo-playground on toolchain bac5816c5f3d02cebd0599070af62d1782530294
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bac5816c5f3d02cebd0599070af62d1782530294" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/thoiberg/algo-playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bac5816c5f3d02cebd0599070af62d1782530294" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+bac5816c5f3d02cebd0599070af62d1782530294" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dddb46e5a1b8ad66da8f5a78defe963306e2370e9965d9eb52b36ab3919e64d4
[INFO] running `Command { std: "docker" "start" "-a" "dddb46e5a1b8ad66da8f5a78defe963306e2370e9965d9eb52b36ab3919e64d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dddb46e5a1b8ad66da8f5a78defe963306e2370e9965d9eb52b36ab3919e64d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dddb46e5a1b8ad66da8f5a78defe963306e2370e9965d9eb52b36ab3919e64d4", kill_on_drop: false }`
[INFO] [stdout] dddb46e5a1b8ad66da8f5a78defe963306e2370e9965d9eb52b36ab3919e64d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+bac5816c5f3d02cebd0599070af62d1782530294" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 414d7ef6ab71e5b2571c4c437575f3711609735dc548a9a9179fc95bf43f9d89
[INFO] running `Command { std: "docker" "start" "-a" "414d7ef6ab71e5b2571c4c437575f3711609735dc548a9a9179fc95bf43f9d89", kill_on_drop: false }`
[INFO] [stderr]     Checking algo_playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `fmt::Display` and `ops::Deref`
[INFO] [stdout]  --> src/main.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{fmt::Display, ops::Deref};
[INFO] [stdout]   |           ^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fmt::Display` and `ops::Deref`
[INFO] [stdout]  --> src/main.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{fmt::Display, ops::Deref};
[INFO] [stdout]   |           ^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0507]: cannot move out of `left.left` which is behind a mutable reference
[INFO] [stdout]   --> src/main.rs:92:38
[INFO] [stdout]    |
[INFO] [stdout] 92 |                         let child = *left.left.unwrap();
[INFO] [stdout]    |                                      ^^^^^^^^^ -------- `left.left` moved due to this method call
[INFO] [stdout]    |                                      |
[INFO] [stdout]    |                                      help: consider calling `.as_ref()` or `.as_mut()` to borrow the type's contents
[INFO] [stdout]    |                                      move occurs because `left.left` has type `Option<Box<Node<T>>>`, which does not implement the `Copy` trait
[INFO] [stdout]    |
[INFO] [stdout] note: `Option::<T>::unwrap` takes ownership of the receiver `self`, which moves `left.left`
[INFO] [stdout]   --> /rustc/bac5816c5f3d02cebd0599070af62d1782530294/library/core/src/option.rs:1013:24
[INFO] [stdout] note: if `Node<T>` implemented `Clone`, you could clone the value
[INFO] [stdout]   --> src/main.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Node<T> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^ consider implementing `Clone` for this type
[INFO] [stdout] ...
[INFO] [stdout] 92 |                         let child = *left.left.unwrap();
[INFO] [stdout]    |                                      --------- you could clone this value
[INFO] [stdout] help: you could `clone` the value and consume it, if the `Node<T>: Clone` trait bound could be satisfied
[INFO] [stdout]    |
[INFO] [stdout] 92 |                         let child = *<Option<Box<Node<T>>> as Clone>::clone(&left.left).unwrap();
[INFO] [stdout]    |                                      ++++++++++++++++++++++++++++++++++++++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/main.rs:92:29
[INFO] [stdout]    |
[INFO] [stdout] 92 |                         let child = *left.left.unwrap();
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_child`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0507`.
[INFO] [stdout] 
[INFO] [stdout] error[E0507]: cannot move out of `left.left` which is behind a mutable reference
[INFO] [stdout]   --> src/main.rs:92:38
[INFO] [stdout]    |
[INFO] [stdout] 92 |                         let child = *left.left.unwrap();
[INFO] [stdout]    |                                      ^^^^^^^^^ -------- `left.left` moved due to this method call
[INFO] [stdout]    |                                      |
[INFO] [stdout]    |                                      help: consider calling `.as_ref()` or `.as_mut()` to borrow the type's contents
[INFO] [stdout]    |                                      move occurs because `left.left` has type `Option<Box<Node<T>>>`, which does not implement the `Copy` trait
[INFO] [stdout]    |
[INFO] [stdout] note: `Option::<T>::unwrap` takes ownership of the receiver `self`, which moves `left.left`
[INFO] [stdout]   --> /rustc/bac5816c5f3d02cebd0599070af62d1782530294/library/core/src/option.rs:1013:24
[INFO] [stdout] note: if `Node<T>` implemented `Clone`, you could clone the value
[INFO] [stdout]   --> src/main.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Node<T> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^ consider implementing `Clone` for this type
[INFO] [stdout] ...
[INFO] [stdout] 92 |                         let child = *left.left.unwrap();
[INFO] [stdout]    |                                      --------- you could clone this value
[INFO] [stdout] help: you could `clone` the value and consume it, if the `Node<T>: Clone` trait bound could be satisfied
[INFO] [stdout]    |
[INFO] [stdout] 92 |                         let child = *<Option<Box<Node<T>>> as Clone>::clone(&left.left).unwrap();
[INFO] [stdout]    |                                      ++++++++++++++++++++++++++++++++++++++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/main.rs:92:29
[INFO] [stdout]    |
[INFO] [stdout] 92 |                         let child = *left.left.unwrap();
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_child`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0507`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `algo_playground` (bin "algo_playground" test) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `algo_playground` (bin "algo_playground") due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "414d7ef6ab71e5b2571c4c437575f3711609735dc548a9a9179fc95bf43f9d89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "414d7ef6ab71e5b2571c4c437575f3711609735dc548a9a9179fc95bf43f9d89", kill_on_drop: false }`
[INFO] [stdout] 414d7ef6ab71e5b2571c4c437575f3711609735dc548a9a9179fc95bf43f9d89
