[INFO] cloning repository https://github.com/mflibby/BTree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mflibby/BTree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmflibby%2FBTree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmflibby%2FBTree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2d5b7d46e272f8f3052453413aaf0161ab0c29f1
[INFO] checking mflibby/BTree against master#336209eef13882bd1e211b24779584cb7ef911eb for pr-129249
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmflibby%2FBTree" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mflibby/BTree on toolchain 336209eef13882bd1e211b24779584cb7ef911eb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+336209eef13882bd1e211b24779584cb7ef911eb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mflibby/BTree
[INFO] finished tweaking git repo https://github.com/mflibby/BTree
[INFO] tweaked toml for git repo https://github.com/mflibby/BTree written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mflibby/BTree 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" "+336209eef13882bd1e211b24779584cb7ef911eb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+336209eef13882bd1e211b24779584cb7ef911eb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43bc7e8a750170141e5c5b94357ef84761c3873c1ff61daa007f9546a38975b9
[INFO] running `Command { std: "docker" "start" "-a" "43bc7e8a750170141e5c5b94357ef84761c3873c1ff61daa007f9546a38975b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43bc7e8a750170141e5c5b94357ef84761c3873c1ff61daa007f9546a38975b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43bc7e8a750170141e5c5b94357ef84761c3873c1ff61daa007f9546a38975b9", kill_on_drop: false }`
[INFO] [stdout] 43bc7e8a750170141e5c5b94357ef84761c3873c1ff61daa007f9546a38975b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+336209eef13882bd1e211b24779584cb7ef911eb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 126be10587c6736a7dfc6ad79f9b0ce934840b28a2459a80bf1c3c54717a891d
[INFO] running `Command { std: "docker" "start" "-a" "126be10587c6736a7dfc6ad79f9b0ce934840b28a2459a80bf1c3c54717a891d", kill_on_drop: false }`
[INFO] [stderr]     Checking btree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `array`, `default`, and `ptr::null`
[INFO] [stdout]  --> src/lib.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{array, default, fmt::{Debug, Display}, ptr::null};
[INFO] [stdout]   |           ^^^^^  ^^^^^^^                         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `array`, `default`, and `ptr::null`
[INFO] [stdout]  --> src/lib.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{array, default, fmt::{Debug, Display}, ptr::null};
[INFO] [stdout]   |           ^^^^^  ^^^^^^^                         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mutate_array` is never used
[INFO] [stdout]   --> src/lib.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn mutate_array<T, const M: usize>(mut arr: [T; M], index: usize, elem: T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `swap_keys` is never used
[INFO] [stdout]   --> src/lib.rs:64:4
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn swap_keys<T>(mut arr: Vec<T>, removal_index: usize, insertion_index: usize, elem: T) -> T {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `has_decendency`, and `DI` are never used
[INFO] [stdout]    --> src/lib.rs:78:8
[INFO] [stdout]     |
[INFO] [stdout] 77  | impl<T : Ord + Debug, const M: usize, const K: usize> Node<T,M,K> {
[INFO] [stdout]     | ----------------------------------------------------------------- associated items in this implementation
[INFO] [stdout] 78  |     fn new() -> Node<T,M,K> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 94  |     fn has_decendency(&self, dec: usize) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |     fn DI(&self) -> i64 {
[INFO] [stdout]     |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         writeln!(f, "{:?}", self.keys);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |             write!(f, "{}", i);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `DI` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn DI(&self) -> i64 {
[INFO] [stdout]     |        ^^ help: convert the identifier to snake case: `di`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mutate_array` is never used
[INFO] [stdout]   --> src/lib.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn mutate_array<T, const M: usize>(mut arr: [T; M], index: usize, elem: T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `swap_keys` is never used
[INFO] [stdout]   --> src/lib.rs:64:4
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn swap_keys<T>(mut arr: Vec<T>, removal_index: usize, insertion_index: usize, elem: T) -> T {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `has_decendency`, and `DI` are never used
[INFO] [stdout]    --> src/lib.rs:78:8
[INFO] [stdout]     |
[INFO] [stdout] 77  | impl<T : Ord + Debug, const M: usize, const K: usize> Node<T,M,K> {
[INFO] [stdout]     | ----------------------------------------------------------------- associated items in this implementation
[INFO] [stdout] 78  |     fn new() -> Node<T,M,K> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 94  |     fn has_decendency(&self, dec: usize) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |     fn DI(&self) -> i64 {
[INFO] [stdout]     |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         writeln!(f, "{:?}", self.keys);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |             write!(f, "{}", i);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `DI` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn DI(&self) -> i64 {
[INFO] [stdout]     |        ^^ help: convert the identifier to snake case: `di`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "126be10587c6736a7dfc6ad79f9b0ce934840b28a2459a80bf1c3c54717a891d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "126be10587c6736a7dfc6ad79f9b0ce934840b28a2459a80bf1c3c54717a891d", kill_on_drop: false }`
[INFO] [stdout] 126be10587c6736a7dfc6ad79f9b0ce934840b28a2459a80bf1c3c54717a891d