[INFO] fetching crate avl_tree 0.2.0...
[INFO] checking avl_tree-0.2.0 against master#f5f33ec0e0455eefa72fc5567eb1280a4d5ee206 for pr-83312
[INFO] extracting crate avl_tree 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate avl_tree 0.2.0 on toolchain f5f33ec0e0455eefa72fc5567eb1280a4d5ee206
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate avl_tree 0.2.0
[INFO] finished tweaking crates.io crate avl_tree 0.2.0
[INFO] tweaked toml for crates.io crate avl_tree 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7d2cea8be28c3ba441736f1701c42a2d951cb29cdd942232faa0f8ed4abde787
[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" "7d2cea8be28c3ba441736f1701c42a2d951cb29cdd942232faa0f8ed4abde787", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d2cea8be28c3ba441736f1701c42a2d951cb29cdd942232faa0f8ed4abde787", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d2cea8be28c3ba441736f1701c42a2d951cb29cdd942232faa0f8ed4abde787", kill_on_drop: false }`
[INFO] [stdout] 7d2cea8be28c3ba441736f1701c42a2d951cb29cdd942232faa0f8ed4abde787
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26dc19ae128667a046b9e382c70d8f307849f4b1fa1b50bdffa205b39ff37768
[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" "26dc19ae128667a046b9e382c70d8f307849f4b1fa1b50bdffa205b39ff37768", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling time v0.2.26
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking avl_tree v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/node.rs:252:20
[INFO] [stdout]     |
[INFO] [stdout] 252 |         t = insert((x as u64),1337+x-1,t)
[INFO] [stdout]     |                    ^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `max`, `min`, `to_string`
[INFO] [stdout]  --> src/tree.rs:5:33
[INFO] [stdout]   |
[INFO] [stdout] 5 | use node::{insert,delete,search,min,max,is_avl_tree, to_string, min_pair, max_pair};
[INFO] [stdout]   |                                 ^^^ ^^^              ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/node.rs:252:20
[INFO] [stdout]     |
[INFO] [stdout] 252 |         t = insert((x as u64),1337+x-1,t)
[INFO] [stdout]     |                    ^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `max`, `min`, `to_string`
[INFO] [stdout]  --> src/tree.rs:5:33
[INFO] [stdout]   |
[INFO] [stdout] 5 | use node::{insert,delete,search,min,max,is_avl_tree, to_string, min_pair, max_pair};
[INFO] [stdout]   |                                 ^^^ ^^^              ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]  --> src/tree.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::Bound;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]    --> src/tree.rs:162:34
[INFO] [stdout]     |
[INFO] [stdout] 162 |         RangePairIter::new(self, Bound::Unbounded, Bound::Unbounded)
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]    --> src/tree.rs:162:52
[INFO] [stdout]     |
[INFO] [stdout] 162 |         RangePairIter::new(self, Bound::Unbounded, Bound::Unbounded)
[INFO] [stdout]     |                                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]    --> src/tree.rs:179:30
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub fn range(&self, min: Bound<K>, max: Bound<K>) -> RangePairIter<K,D>{
[INFO] [stdout]     |                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]    --> src/tree.rs:179:45
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub fn range(&self, min: Bound<K>, max: Bound<K>) -> RangePairIter<K,D>{
[INFO] [stdout]     |                                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]  --> src/iterators.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::Bound;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]  --> src/iterators.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 |     from: Bound<K>,
[INFO] [stdout]   |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]  --> src/iterators.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     to: Bound<K>,
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:14:53
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(tree: &'a tree::AVLTree<K,D>, lower: Bound<K>, upper: Bound<K>) -> RangePairIter<'a,K,D>{
[INFO] [stdout]    |                                                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:14:70
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(tree: &'a tree::AVLTree<K,D>, lower: Bound<K>, upper: Bound<K>) -> RangePairIter<'a,K,D>{
[INFO] [stdout]    |                                                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |             Bound::Included(ref key) => node::search_pair(key, root).or_else(|| node::min_after(key, root)),
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |             Bound::Excluded(ref key) => node::min_after(key, root),
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Bound::Unbounded => Some(node::min_pair(root))
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |             Bound::Included(ref key) => current.0 <= key,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |             Bound::Excluded(ref key) => current.0 < key,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |             Bound::Unbounded => true
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]  --> src/tree.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::Bound;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]    --> src/tree.rs:162:34
[INFO] [stdout]     |
[INFO] [stdout] 162 |         RangePairIter::new(self, Bound::Unbounded, Bound::Unbounded)
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]    --> src/tree.rs:162:52
[INFO] [stdout]     |
[INFO] [stdout] 162 |         RangePairIter::new(self, Bound::Unbounded, Bound::Unbounded)
[INFO] [stdout]     |                                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]    --> src/tree.rs:179:30
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub fn range(&self, min: Bound<K>, max: Bound<K>) -> RangePairIter<K,D>{
[INFO] [stdout]     |                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]    --> src/tree.rs:179:45
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub fn range(&self, min: Bound<K>, max: Bound<K>) -> RangePairIter<K,D>{
[INFO] [stdout]     |                                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]  --> src/iterators.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::Bound;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]  --> src/iterators.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 |     from: Bound<K>,
[INFO] [stdout]   |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]  --> src/iterators.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     to: Bound<K>,
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:70:87
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let mut iter = RangePairIter::<u64,i32>{tree: &tree, prev: Some(&init_key), from: Bound::Unbounded, to: Bound::Unbounded};
[INFO] [stdout]    |                                                                                       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:70:109
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let mut iter = RangePairIter::<u64,i32>{tree: &tree, prev: Some(&init_key), from: Bound::Unbounded, to: Bound::Unbounded};
[INFO] [stdout]    |                                                                                                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:79:46
[INFO] [stdout]    |
[INFO] [stdout] 79 |     let mut iter = RangePairIter::new(&tree, Bound::Unbounded, Bound::Unbounded);
[INFO] [stdout]    |                                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:79:64
[INFO] [stdout]    |
[INFO] [stdout] 79 |     let mut iter = RangePairIter::new(&tree, Bound::Unbounded, Bound::Unbounded);
[INFO] [stdout]    |                                                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:88:46
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let mut iter = RangePairIter::new(&tree, Bound::Included(3), Bound::Included(17));
[INFO] [stdout]    |                                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:88:66
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let mut iter = RangePairIter::new(&tree, Bound::Included(3), Bound::Included(17));
[INFO] [stdout]    |                                                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:95:46
[INFO] [stdout]    |
[INFO] [stdout] 95 |     let mut iter = RangePairIter::new(&tree, Bound::Excluded(1), Bound::Excluded(18));
[INFO] [stdout]    |                                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:95:66
[INFO] [stdout]    |
[INFO] [stdout] 95 |     let mut iter = RangePairIter::new(&tree, Bound::Excluded(1), Bound::Excluded(18));
[INFO] [stdout]    |                                                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:14:53
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(tree: &'a tree::AVLTree<K,D>, lower: Bound<K>, upper: Bound<K>) -> RangePairIter<'a,K,D>{
[INFO] [stdout]    |                                                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:14:70
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(tree: &'a tree::AVLTree<K,D>, lower: Bound<K>, upper: Bound<K>) -> RangePairIter<'a,K,D>{
[INFO] [stdout]    |                                                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |             Bound::Included(ref key) => node::search_pair(key, root).or_else(|| node::min_after(key, root)),
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |             Bound::Excluded(ref key) => node::min_after(key, root),
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Bound::Unbounded => Some(node::min_pair(root))
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |             Bound::Included(ref key) => current.0 <= key,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |             Bound::Excluded(ref key) => current.0 < key,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::collections::Bound`: moved to `std::ops::Bound`
[INFO] [stdout]   --> src/iterators.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |             Bound::Unbounded => true
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `contains`
[INFO] [stdout]    --> src/node.rs:145:4
[INFO] [stdout]     |
[INFO] [stdout] 145 | fn contains<K:Ord,D>(key: &K, root: &Box<Node<K,D>> ) -> bool  {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `min`
[INFO] [stdout]    --> src/node.rs:175:8
[INFO] [stdout]     |
[INFO] [stdout] 175 | pub fn min<K:Ord,D>(root: &Box<Node<K,D>>) -> &D {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `max`
[INFO] [stdout]    --> src/node.rs:180:8
[INFO] [stdout]     |
[INFO] [stdout] 180 | pub fn max<K:Ord,D>(root: &Box<Node<K,D>>) -> &D {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `simple_tree`
[INFO] [stdout]    --> src/node.rs:249:4
[INFO] [stdout]     |
[INFO] [stdout] 249 | fn simple_tree(size: i32) -> Box<Node<u64,i32>> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_sorted_left`
[INFO] [stdout]    --> src/node.rs:257:4
[INFO] [stdout]     |
[INFO] [stdout] 257 | fn is_sorted_left<K:Ord,D>(node: &Box<Node<K,D>>) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_sorted_right`
[INFO] [stdout]    --> src/node.rs:261:4
[INFO] [stdout]     |
[INFO] [stdout] 261 | fn is_sorted_right<K:Ord,D>(node: &Box<Node<K,D>>) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_avl_node`
[INFO] [stdout]    --> src/node.rs:265:4
[INFO] [stdout]     |
[INFO] [stdout] 265 | fn is_avl_node<K:Ord,D>(node: &Box<Node<K,D>>) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_avl_tree`
[INFO] [stdout]    --> src/node.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 | pub fn is_avl_tree<K:Ord,D>(root: &Option<Box<Node<K,D>>>) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `test_avl_tree`
[INFO] [stdout]    --> src/tree.rs:183:8
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn test_avl_tree(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `collections_bound` has been stable since 1.17.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(collections_bound)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `rand`
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(rand)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `avl_tree`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/node.rs:368:9
[INFO] [stdout]     |
[INFO] [stdout] 368 |     let mut t = simple_tree(50);
[INFO] [stdout]     |         ----^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `collections_bound` has been stable since 1.17.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(collections_bound)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `rand`
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(rand)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "26dc19ae128667a046b9e382c70d8f307849f4b1fa1b50bdffa205b39ff37768", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26dc19ae128667a046b9e382c70d8f307849f4b1fa1b50bdffa205b39ff37768", kill_on_drop: false }`
[INFO] [stdout] 26dc19ae128667a046b9e382c70d8f307849f4b1fa1b50bdffa205b39ff37768