[INFO] cloning repository https://github.com/BhumitRohilla/AVL_Tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BhumitRohilla/AVL_Tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBhumitRohilla%2FAVL_Tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBhumitRohilla%2FAVL_Tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 477d1432937b38804b32b403cee0d826fb0df0c9
[INFO] checking BhumitRohilla/AVL_Tree against try#44f3504e96c944ae54fc72b5f5008f53f7eda001 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBhumitRohilla%2FAVL_Tree" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BhumitRohilla/AVL_Tree on toolchain 44f3504e96c944ae54fc72b5f5008f53f7eda001
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BhumitRohilla/AVL_Tree
[INFO] finished tweaking git repo https://github.com/BhumitRohilla/AVL_Tree
[INFO] tweaked toml for git repo https://github.com/BhumitRohilla/AVL_Tree written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/BhumitRohilla/AVL_Tree 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" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd00a623cff99aaba40317ce08cb7b6bbfc5d80653768590d14d97333ed28349
[INFO] running `Command { std: "docker" "start" "-a" "cd00a623cff99aaba40317ce08cb7b6bbfc5d80653768590d14d97333ed28349", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd00a623cff99aaba40317ce08cb7b6bbfc5d80653768590d14d97333ed28349", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd00a623cff99aaba40317ce08cb7b6bbfc5d80653768590d14d97333ed28349", kill_on_drop: false }`
[INFO] [stdout] cd00a623cff99aaba40317ce08cb7b6bbfc5d80653768590d14d97333ed28349
[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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95285b5d1841d9f4f23b131c0f2490fe68b3b957f2cc14060ac8050f97511636
[INFO] running `Command { std: "docker" "start" "-a" "95285b5d1841d9f4f23b131c0f2490fe68b3b957f2cc14060ac8050f97511636", kill_on_drop: false }`
[INFO] [stderr]     Checking AVL_Tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |         if (left_height > right_height) {
[INFO] [stdout]    |            ^                          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 41 -         if (left_height > right_height) {
[INFO] [stdout] 41 +         if left_height > right_height {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:50:16
[INFO] [stdout]    |
[INFO] [stdout] 50 |             if (left_left_height > left_right_height) {
[INFO] [stdout]    |                ^                                    ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 50 -             if (left_left_height > left_right_height) {
[INFO] [stdout] 50 +             if left_left_height > left_right_height {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:66:16
[INFO] [stdout]    |
[INFO] [stdout] 66 |             if (right_left_height > right_right_height) {
[INFO] [stdout]    |                ^                                      ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 66 -             if (right_left_height > right_right_height) {
[INFO] [stdout] 66 +             if right_left_height > right_right_height {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |         if (left_height > right_height) {
[INFO] [stdout]    |            ^                          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 41 -         if (left_height > right_height) {
[INFO] [stdout] 41 +         if left_height > right_height {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:50:16
[INFO] [stdout]    |
[INFO] [stdout] 50 |             if (left_left_height > left_right_height) {
[INFO] [stdout]    |                ^                                    ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 50 -             if (left_left_height > left_right_height) {
[INFO] [stdout] 50 +             if left_left_height > left_right_height {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:66:16
[INFO] [stdout]    |
[INFO] [stdout] 66 |             if (right_left_height > right_right_height) {
[INFO] [stdout]    |                ^                                      ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 66 -             if (right_left_height > right_right_height) {
[INFO] [stdout] 66 +             if right_left_height > right_right_height {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:156:22
[INFO] [stdout]     |
[INFO] [stdout] 156 |     fn insert_node ( mut node :  Option<Box<Node>>, data: i32) -> Box<Node> {
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:156:22
[INFO] [stdout]     |
[INFO] [stdout] 156 |     fn insert_node ( mut node :  Option<Box<Node>>, data: i32) -> Box<Node> {
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "95285b5d1841d9f4f23b131c0f2490fe68b3b957f2cc14060ac8050f97511636", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95285b5d1841d9f4f23b131c0f2490fe68b3b957f2cc14060ac8050f97511636", kill_on_drop: false }`
[INFO] [stdout] 95285b5d1841d9f4f23b131c0f2490fe68b3b957f2cc14060ac8050f97511636
