[INFO] fetching crate ziptree 0.1.1...
[INFO] testing ziptree-0.1.1 against 1.100.0-beta.1 for beta-1.100-2
[INFO] extracting crate ziptree 0.1.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate ziptree 0.1.1
[INFO] finished tweaking crates.io crate ziptree 0.1.1
[INFO] tweaked toml for crates.io crate ziptree 0.1.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ziptree 0.1.1 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages to highest compatible versions
[INFO] [stderr]       Adding rand v0.6.5 (available: v0.10.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | homepage = "https://github.com/jerry73204/ziptree-rs"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 14 | repository = "https://github.com/jerry73204/ziptree-rs"
[INFO] [stderr]    |              ------------------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `ziptree` (manifest) generated 2 warnings
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 7ed34ec19cbd4e934c67d7617715db9b5f8e34f6e6dc9f8db75cad653872e28c
[INFO] running `Command { std: "docker" "start" "7ed34ec19cbd4e934c67d7617715db9b5f8e34f6e6dc9f8db75cad653872e28c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ed34ec19cbd4e934c67d7617715db9b5f8e34f6e6dc9f8db75cad653872e28c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7ed34ec19cbd4e934c67d7617715db9b5f8e34f6e6dc9f8db75cad653872e28c" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ed34ec19cbd4e934c67d7617715db9b5f8e34f6e6dc9f8db75cad653872e28c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7ed34ec19cbd4e934c67d7617715db9b5f8e34f6e6dc9f8db75cad653872e28c" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | homepage = "https://github.com/jerry73204/ziptree-rs"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 14 | repository = "https://github.com/jerry73204/ziptree-rs"
[INFO] [stderr]    |              ------------------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `ziptree` (manifest) generated 2 warnings
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling rand_core v0.4.3
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_core v0.3.2
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling ziptree v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `greater`
[INFO] [stdout]    --> src/lib.rs:422:34
[INFO] [stdout]     |
[INFO] [stdout] 422 | ...                   Some(greater) => {
[INFO] [stdout]     |                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greater`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tree` is never read
[INFO] [stdout]   --> src/lib.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Iter<'a, K: 'a, V: 'a> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 30 |     tree: &'a ZipTree<K, V>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Iter` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tree` is never read
[INFO] [stdout]   --> src/lib.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct IterMut<'a, K: 'a, V: 'a> {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 37 |     tree: &'a mut ZipTree<K, V>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tree` is never read
[INFO] [stdout]   --> src/lib.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct Keys<'a, K: 'a, V: 'a> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 45 |     tree: &'a ZipTree<K, V>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Keys` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tree` is never read
[INFO] [stdout]   --> src/lib.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub struct Values<'a, K: 'a, V: 'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 53 |     tree: &'a ZipTree<K, V>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Values` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tree` is never read
[INFO] [stdout]   --> src/lib.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct ValuesMut<'a, K: 'a, V: 'a> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 60 |     tree: &'a mut ZipTree<K, V>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `dump` is never used
[INFO] [stdout]    --> src/lib.rs:534:8
[INFO] [stdout]     |
[INFO] [stdout] 101 | / impl<K, V> ZipTree<K, V> where
[INFO] [stdout] 102 | |     K: Ord,
[INFO] [stdout]     | |___________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 534 |       fn dump(&self) where
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.42s
[INFO] running `Command { std: "docker" "inspect" "7ed34ec19cbd4e934c67d7617715db9b5f8e34f6e6dc9f8db75cad653872e28c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7ed34ec19cbd4e934c67d7617715db9b5f8e34f6e6dc9f8db75cad653872e28c" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | homepage = "https://github.com/jerry73204/ziptree-rs"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 14 | repository = "https://github.com/jerry73204/ziptree-rs"
[INFO] [stderr]    |              ------------------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `ziptree` (manifest) generated 2 warnings
[INFO] [stderr]    Compiling ziptree v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `greater`
[INFO] [stdout]    --> src/lib.rs:422:34
[INFO] [stdout]     |
[INFO] [stdout] 422 | ...                   Some(greater) => {
[INFO] [stdout]     |                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greater`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tree` is never read
[INFO] [stdout]   --> src/lib.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Iter<'a, K: 'a, V: 'a> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 30 |     tree: &'a ZipTree<K, V>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Iter` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tree` is never read
[INFO] [stdout]   --> src/lib.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct IterMut<'a, K: 'a, V: 'a> {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 37 |     tree: &'a mut ZipTree<K, V>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tree` is never read
[INFO] [stdout]   --> src/lib.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct Keys<'a, K: 'a, V: 'a> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 45 |     tree: &'a ZipTree<K, V>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Keys` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tree` is never read
[INFO] [stdout]   --> src/lib.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub struct Values<'a, K: 'a, V: 'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 53 |     tree: &'a ZipTree<K, V>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Values` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tree` is never read
[INFO] [stdout]   --> src/lib.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct ValuesMut<'a, K: 'a, V: 'a> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 60 |     tree: &'a mut ZipTree<K, V>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `dump` is never used
[INFO] [stdout]    --> src/lib.rs:534:8
[INFO] [stdout]     |
[INFO] [stdout] 101 | / impl<K, V> ZipTree<K, V> where
[INFO] [stdout] 102 | |     K: Ord,
[INFO] [stdout]     | |___________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 534 |       fn dump(&self) where
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> tests/simple.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{HashMap, BTreeMap};
[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 variable: `greater`
[INFO] [stdout]    --> src/lib.rs:422:34
[INFO] [stdout]     |
[INFO] [stdout] 422 | ...                   Some(greater) => {
[INFO] [stdout]     |                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greater`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tree` is never read
[INFO] [stdout]   --> src/lib.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Iter<'a, K: 'a, V: 'a> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 30 |     tree: &'a ZipTree<K, V>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Iter` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tree` is never read
[INFO] [stdout]   --> src/lib.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct IterMut<'a, K: 'a, V: 'a> {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 37 |     tree: &'a mut ZipTree<K, V>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tree` is never read
[INFO] [stdout]   --> src/lib.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct Keys<'a, K: 'a, V: 'a> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 45 |     tree: &'a ZipTree<K, V>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Keys` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tree` is never read
[INFO] [stdout]   --> src/lib.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub struct Values<'a, K: 'a, V: 'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 53 |     tree: &'a ZipTree<K, V>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Values` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `tree` is never read
[INFO] [stdout]   --> src/lib.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct ValuesMut<'a, K: 'a, V: 'a> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 60 |     tree: &'a mut ZipTree<K, V>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `dump` is never used
[INFO] [stdout]    --> src/lib.rs:534:8
[INFO] [stdout]     |
[INFO] [stdout] 101 | / impl<K, V> ZipTree<K, V> where
[INFO] [stdout] 102 | |     K: Ord,
[INFO] [stdout]     | |___________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 534 |       fn dump(&self) where
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "7ed34ec19cbd4e934c67d7617715db9b5f8e34f6e6dc9f8db75cad653872e28c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7ed34ec19cbd4e934c67d7617715db9b5f8e34f6e6dc9f8db75cad653872e28c" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | homepage = "https://github.com/jerry73204/ziptree-rs"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 14 | repository = "https://github.com/jerry73204/ziptree-rs"
[INFO] [stderr]    |              ------------------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `ziptree` (manifest) generated 2 warnings
[INFO] [stderr] warning: unused variable: `greater`
[INFO] [stderr]    --> src/lib.rs:422:34
[INFO] [stderr]     |
[INFO] [stderr] 422 | ...                   Some(greater) => {
[INFO] [stderr]     |                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greater`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `tree` is never read
[INFO] [stderr]   --> src/lib.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub struct Iter<'a, K: 'a, V: 'a> {
[INFO] [stderr]    |            ---- field in this struct
[INFO] [stderr] 30 |     tree: &'a ZipTree<K, V>,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Iter` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `tree` is never read
[INFO] [stderr]   --> src/lib.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub struct IterMut<'a, K: 'a, V: 'a> {
[INFO] [stderr]    |            ------- field in this struct
[INFO] [stderr] 37 |     tree: &'a mut ZipTree<K, V>,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `tree` is never read
[INFO] [stderr]   --> src/lib.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 44 | pub struct Keys<'a, K: 'a, V: 'a> {
[INFO] [stderr]    |            ---- field in this struct
[INFO] [stderr] 45 |     tree: &'a ZipTree<K, V>,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Keys` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: field `tree` is never read
[INFO] [stderr]   --> src/lib.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 52 | pub struct Values<'a, K: 'a, V: 'a> {
[INFO] [stderr]    |            ------ field in this struct
[INFO] [stderr] 53 |     tree: &'a ZipTree<K, V>,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Values` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: field `tree` is never read
[INFO] [stderr]   --> src/lib.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 59 | pub struct ValuesMut<'a, K: 'a, V: 'a> {
[INFO] [stderr]    |            --------- field in this struct
[INFO] [stderr] 60 |     tree: &'a mut ZipTree<K, V>,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `dump` is never used
[INFO] [stderr]    --> src/lib.rs:534:8
[INFO] [stderr]     |
[INFO] [stderr] 101 | / impl<K, V> ZipTree<K, V> where
[INFO] [stderr] 102 | |     K: Ord,
[INFO] [stderr]     | |___________- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 534 |       fn dump(&self) where
[INFO] [stderr]     |          ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `ziptree` (lib) generated 7 warnings (run `cargo fix --lib -p ziptree` to apply 1 suggestion)
[INFO] [stderr] warning: `ziptree` (lib test) generated 7 warnings (7 duplicates)
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stderr]  --> tests/simple.rs:2:24
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::collections::{HashMap, BTreeMap};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ziptree` (test "simple") generated 1 warning (run `cargo fix --test "simple" -p ziptree` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/build/ziptree/d65298666dfd3620/out/ziptree-d65298666dfd3620)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/simple.rs (/opt/rustwide/target/debug/build/ziptree/e17b69634c96d0ad/out/simple-e17b69634c96d0ad)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test simple_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 6.65s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ziptree
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7ed34ec19cbd4e934c67d7617715db9b5f8e34f6e6dc9f8db75cad653872e28c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ed34ec19cbd4e934c67d7617715db9b5f8e34f6e6dc9f8db75cad653872e28c", kill_on_drop: false }`
[INFO] [stdout] 7ed34ec19cbd4e934c67d7617715db9b5f8e34f6e6dc9f8db75cad653872e28c
