[INFO] cloning repository https://github.com/DouglasNtz/Merge_sort
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DouglasNtz/Merge_sort" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDouglasNtz%2FMerge_sort", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDouglasNtz%2FMerge_sort'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 40fd8a8af04a132f6726b9e12e6425d8e7b24d13
[INFO] checking DouglasNtz/Merge_sort against f1c52bf13c990fc425c542cc90a0396a87db24ba for pr-164812
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDouglasNtz%2FMerge_sort" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/DouglasNtz/Merge_sort
[INFO] finished tweaking git repo https://github.com/DouglasNtz/Merge_sort
[INFO] tweaked toml for git repo https://github.com/DouglasNtz/Merge_sort written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/DouglasNtz/Merge_sort on toolchain f1c52bf13c990fc425c542cc90a0396a87db24ba
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f1c52bf13c990fc425c542cc90a0396a87db24ba" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/DouglasNtz/Merge_sort 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" "+f1c52bf13c990fc425c542cc90a0396a87db24ba" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:c0af3998e971868164375a7dfb646c9933ddd1a3bdb00fa2041266763dc1eeab" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] c1ba19e36da9cba4cbbfd92668c223aeacc7b8740b4394de03e35032954d5c61
[INFO] running `Command { std: "docker" "start" "c1ba19e36da9cba4cbbfd92668c223aeacc7b8740b4394de03e35032954d5c61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1ba19e36da9cba4cbbfd92668c223aeacc7b8740b4394de03e35032954d5c61", 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" "c1ba19e36da9cba4cbbfd92668c223aeacc7b8740b4394de03e35032954d5c61" "/opt/rustwide/cargo-home/bin/cargo" "+f1c52bf13c990fc425c542cc90a0396a87db24ba" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1ba19e36da9cba4cbbfd92668c223aeacc7b8740b4394de03e35032954d5c61", 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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c1ba19e36da9cba4cbbfd92668c223aeacc7b8740b4394de03e35032954d5c61" "/opt/rustwide/cargo-home/bin/cargo" "+f1c52bf13c990fc425c542cc90a0396a87db24ba" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling zerocopy v0.8.0-alpha.6
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking getrandom v0.2.14
[INFO] [stderr]     Checking rand_core v0.9.0-alpha.1
[INFO] [stderr]     Checking rand_chacha v0.9.0-alpha.1
[INFO] [stderr]     Checking rand v0.9.0-alpha.1
[INFO] [stderr]     Checking lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/proof_algorithms.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Debug;
[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 import: `std::fmt::Debug`
[INFO] [stdout]  --> src/proof_algorithms.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `v0` is never read
[INFO] [stdout]  --> src/algorithms.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut v0 = Vec::with_capacity(v.len());
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 8 |         v0 = merge_sorted_vectors(sort_vector(&v[..(v.len()/2)]), sort_vector(&v[(v.len()/2)..]));
[INFO] [stdout]   |         -- `v0` is overwritten here before the previous value is read
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/performance_algorithms.rs:5:21
[INFO] [stdout]    |
[INFO] [stdout]  5 |     let mut count = 0;
[INFO] [stdout]    |                     ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 13 |         count = left_vec.1 + rigth_vec.1;
[INFO] [stdout]    |         -------------------------------- `count` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `v0` is never read
[INFO] [stdout]  --> src/algorithms.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut v0 = Vec::with_capacity(v.len());
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 8 |         v0 = merge_sorted_vectors(sort_vector(&v[..(v.len()/2)]), sort_vector(&v[(v.len()/2)..]));
[INFO] [stdout]   |         -- `v0` is overwritten here before the previous value is read
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/performance_algorithms.rs:5:21
[INFO] [stdout]    |
[INFO] [stdout]  5 |     let mut count = 0;
[INFO] [stdout]    |                     ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 13 |         count = left_vec.1 + rigth_vec.1;
[INFO] [stdout]    |         -------------------------------- `count` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `my_merge_sort_proof_stability` is never used
[INFO] [stdout]  --> src/proof_algorithms.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub(super) fn my_merge_sort_proof_stability<T: PartialOrd + Copy>(v: &mut Vec<(T, usize)>) {
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sort_vector` is never used
[INFO] [stdout]   --> src/proof_algorithms.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn sort_vector<T: PartialOrd + Copy>(slice: &[(T, usize)]) -> Vec<(T, usize)> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge_sorted_vectors` is never used
[INFO] [stdout]   --> src/proof_algorithms.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn merge_sorted_vectors<T: PartialOrd + Copy>(v_left: Vec<(T, usize)>, v_rigth: Vec<(T, usize)>) -> Vec<(T, usize)> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `my_merge_sort_optmized_proof_stability` is never used
[INFO] [stdout]   --> src/proof_algorithms.rs:56:15
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub(super) fn my_merge_sort_optmized_proof_stability<T: PartialOrd + Copy>(v: &mut Vec<(T, usize)>) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `My_merge_sort` should have an upper camel case name
[INFO] [stdout]  --> src/main.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum My_merge_sort<T> {
[INFO] [stdout]   |      ^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `MyMergeSort`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `My_merge_sort_optmized` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum My_merge_sort_optmized<T> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `MyMergeSortOptmized`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `My_merge_sort` should have an upper camel case name
[INFO] [stdout]  --> src/main.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum My_merge_sort<T> {
[INFO] [stdout]   |      ^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `MyMergeSort`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `My_merge_sort_optmized` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum My_merge_sort_optmized<T> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `MyMergeSortOptmized`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.02s
[INFO] running `Command { std: "docker" "inspect" "c1ba19e36da9cba4cbbfd92668c223aeacc7b8740b4394de03e35032954d5c61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1ba19e36da9cba4cbbfd92668c223aeacc7b8740b4394de03e35032954d5c61", kill_on_drop: false }`
[INFO] [stdout] c1ba19e36da9cba4cbbfd92668c223aeacc7b8740b4394de03e35032954d5c61
