[INFO] cloning repository https://github.com/tonykuttai/Rust-Graph-Algorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tonykuttai/Rust-Graph-Algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftonykuttai%2FRust-Graph-Algorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftonykuttai%2FRust-Graph-Algorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c65c565c2c3ac4e7d5a9382f36e68c08a8f6d135
[INFO] checking tonykuttai/Rust-Graph-Algorithms against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftonykuttai%2FRust-Graph-Algorithms" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tonykuttai/Rust-Graph-Algorithms on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tonykuttai/Rust-Graph-Algorithms
[INFO] finished tweaking git repo https://github.com/tonykuttai/Rust-Graph-Algorithms
[INFO] tweaked toml for git repo https://github.com/tonykuttai/Rust-Graph-Algorithms written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tonykuttai/Rust-Graph-Algorithms 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" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5c6ff389b85a41057d0b49d2b573b4dc3d29bec6184d434bd7c853070bab2ff7
[INFO] running `Command { std: "docker" "start" "-a" "5c6ff389b85a41057d0b49d2b573b4dc3d29bec6184d434bd7c853070bab2ff7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c6ff389b85a41057d0b49d2b573b4dc3d29bec6184d434bd7c853070bab2ff7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c6ff389b85a41057d0b49d2b573b4dc3d29bec6184d434bd7c853070bab2ff7", kill_on_drop: false }`
[INFO] [stdout] 5c6ff389b85a41057d0b49d2b573b4dc3d29bec6184d434bd7c853070bab2ff7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a757b50d1c842b9935f97731bdc9b0843e4df8ed882bca3ff6144ff20358e4a
[INFO] running `Command { std: "docker" "start" "-a" "1a757b50d1c842b9935f97731bdc9b0843e4df8ed882bca3ff6144ff20358e4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.7
[INFO] [stderr]     Checking libc v0.2.11
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking time v0.1.35
[INFO] [stderr]     Checking tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/istree.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/istree.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/istree.rs:82:40
[INFO] [stdout]    |
[INFO] [stdout] 82 |                     let mut adj_list = (adj_list.lock().unwrap());
[INFO] [stdout]    |                                        ^                        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 82 -                     let mut adj_list = (adj_list.lock().unwrap());
[INFO] [stdout] 82 +                     let mut adj_list = adj_list.lock().unwrap();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/istree.rs:82:40
[INFO] [stdout]    |
[INFO] [stdout] 82 |                     let mut adj_list = (adj_list.lock().unwrap());
[INFO] [stdout]    |                                        ^                        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 82 -                     let mut adj_list = (adj_list.lock().unwrap());
[INFO] [stdout] 82 +                     let mut adj_list = adj_list.lock().unwrap();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/istree.rs:15:11
[INFO] [stdout]    |
[INFO] [stdout] 15 |       let mut row: usize = nodes;
[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/istree.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn tree(mut adj_list: &mut Vec< Vec<usize>>,mut visited: &mut Vec<bool>,index:usize,flag:bool,nodes: usize)->bool{
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/istree.rs:38:45
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn tree(mut adj_list: &mut Vec< Vec<usize>>,mut visited: &mut Vec<bool>,index:usize,flag:bool,nodes: usize)->bool{
[INFO] [stdout]    |                                             ----^^^^^^^
[INFO] [stdout]    |                                             |
[INFO] [stdout]    |                                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/istree.rs:15:11
[INFO] [stdout]    |
[INFO] [stdout] 15 |       let mut row: usize = nodes;
[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: unnecessary `unsafe` block
[INFO] [stdout]   --> src/istree.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         unsafe {
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/istree.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn tree(mut adj_list: &mut Vec< Vec<usize>>,mut visited: &mut Vec<bool>,index:usize,flag:bool,nodes: usize)->bool{
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/istree.rs:38:45
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn tree(mut adj_list: &mut Vec< Vec<usize>>,mut visited: &mut Vec<bool>,index:usize,flag:bool,nodes: usize)->bool{
[INFO] [stdout]    |                                             ----^^^^^^^
[INFO] [stdout]    |                                             |
[INFO] [stdout]    |                                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/istree.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         unsafe {
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/istree.rs:61:19
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn check_tree(mut adj_list_c: &mut Vec< Vec<usize>>,nodes: usize){
[INFO] [stdout]    |                   ----^^^^^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/istree.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let mut adj_list= Arc::new(Mutex::new(adj_list));
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `row_del` should have an upper case name
[INFO] [stdout]  --> src/istree.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | static mut row_del: usize = 0;
[INFO] [stdout]   |            ^^^^^^^ help: convert the identifier to upper case: `ROW_DEL`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/istree.rs:61:19
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn check_tree(mut adj_list_c: &mut Vec< Vec<usize>>,nodes: usize){
[INFO] [stdout]    |                   ----^^^^^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/istree.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let mut adj_list= Arc::new(Mutex::new(adj_list));
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `row_del` should have an upper case name
[INFO] [stdout]  --> src/istree.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | static mut row_del: usize = 0;
[INFO] [stdout]   |            ^^^^^^^ help: convert the identifier to upper case: `ROW_DEL`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:27:63
[INFO] [stdout]    |
[INFO] [stdout] 27 | ...                   Error::description(&why)),
[INFO] [stdout]    |                              ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:27:63
[INFO] [stdout]    |
[INFO] [stdout] 27 | ...                   Error::description(&why)),
[INFO] [stdout]    |                              ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:34:63
[INFO] [stdout]    |
[INFO] [stdout] 34 | ...                   Error::description(&why)),
[INFO] [stdout]    |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:34:63
[INFO] [stdout]    |
[INFO] [stdout] 34 | ...                   Error::description(&why)),
[INFO] [stdout]    |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "1a757b50d1c842b9935f97731bdc9b0843e4df8ed882bca3ff6144ff20358e4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a757b50d1c842b9935f97731bdc9b0843e4df8ed882bca3ff6144ff20358e4a", kill_on_drop: false }`
[INFO] [stdout] 1a757b50d1c842b9935f97731bdc9b0843e4df8ed882bca3ff6144ff20358e4a
