[INFO] cloning repository https://github.com/dctk/algorithm_rust_sort_sample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dctk/algorithm_rust_sort_sample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdctk%2Falgorithm_rust_sort_sample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdctk%2Falgorithm_rust_sort_sample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 512c664dd9921e1b4099624b4d8ccde937216c12
[INFO] checking dctk/algorithm_rust_sort_sample against master#4008bbdf34b583ce44a467043aae3703afc0a76f for pr-129249-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdctk%2Falgorithm_rust_sort_sample" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dctk/algorithm_rust_sort_sample
[INFO] finished tweaking git repo https://github.com/dctk/algorithm_rust_sort_sample
[INFO] tweaked toml for git repo https://github.com/dctk/algorithm_rust_sort_sample written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dctk/algorithm_rust_sort_sample on toolchain 4008bbdf34b583ce44a467043aae3703afc0a76f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4008bbdf34b583ce44a467043aae3703afc0a76f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dctk/algorithm_rust_sort_sample 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" "+4008bbdf34b583ce44a467043aae3703afc0a76f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f80cca07cbfd3b7bd2737531c10c9c8df79955c8606e04c70d1d42bbc1c8a614
[INFO] running `Command { std: "docker" "start" "f80cca07cbfd3b7bd2737531c10c9c8df79955c8606e04c70d1d42bbc1c8a614", 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" "f80cca07cbfd3b7bd2737531c10c9c8df79955c8606e04c70d1d42bbc1c8a614" "/opt/rustwide/cargo-home/bin/cargo" "+4008bbdf34b583ce44a467043aae3703afc0a76f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f80cca07cbfd3b7bd2737531c10c9c8df79955c8606e04c70d1d42bbc1c8a614", 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" "f80cca07cbfd3b7bd2737531c10c9c8df79955c8606e04c70d1d42bbc1c8a614" "/opt/rustwide/cargo-home/bin/cargo" "+4008bbdf34b583ce44a467043aae3703afc0a76f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking algorithm_rust_sort_sample v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::Rng;
[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 `flg` is never read
[INFO] [stdout]    --> src/sort.rs:132:19
[INFO] [stdout]     |
[INFO] [stdout] 132 |     let mut flg = false;
[INFO] [stdout]     |                   ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 143 |         flg = false;
[INFO] [stdout]     |         ----------- `flg` 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: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         for i in 0..10000 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 | /         proc_time!({
[INFO] [stdout] 31 | |             sort::bubble_sort(&mut data);
[INFO] [stdout] 32 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout] help: `result` is captured in macro and introduced a unused variable
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 | /         proc_time!({
[INFO] [stdout] 31 | |             sort::bubble_sort(&mut data);
[INFO] [stdout] 32 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    = note: this warning originates in the macro `proc_time` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         for i in 0..10000 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 | /         proc_time!({
[INFO] [stdout] 44 | |             let len =data.len();
[INFO] [stdout] 45 | |             sort::quick_sort(&mut data,0,len-1);
[INFO] [stdout] 46 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout] help: `result` is captured in macro and introduced a unused variable
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 | /         proc_time!({
[INFO] [stdout] 44 | |             let len =data.len();
[INFO] [stdout] 45 | |             sort::quick_sort(&mut data,0,len-1);
[INFO] [stdout] 46 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    = note: this warning originates in the macro `proc_time` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         for i in 0..10000 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 | /         proc_time!({
[INFO] [stdout] 58 | |             let len =data.len();
[INFO] [stdout] 59 | |             sort::merge_sort(&mut data,0,len-1);
[INFO] [stdout] 60 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout] help: `result` is captured in macro and introduced a unused variable
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 | /         proc_time!({
[INFO] [stdout] 58 | |             let len =data.len();
[INFO] [stdout] 59 | |             sort::merge_sort(&mut data,0,len-1);
[INFO] [stdout] 60 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    = note: this warning originates in the macro `proc_time` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         for i in 0..10000 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 71 | /         proc_time!({
[INFO] [stdout] 72 | |             sort::comb_sort(&mut data);
[INFO] [stdout] 73 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout] help: `result` is captured in macro and introduced a unused variable
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 71 | /         proc_time!({
[INFO] [stdout] 72 | |             sort::comb_sort(&mut data);
[INFO] [stdout] 73 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    = note: this warning originates in the macro `proc_time` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         for i in 0..10000 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 | /         proc_time!({
[INFO] [stdout] 85 | |             sort::insert_sort(&mut data);
[INFO] [stdout] 86 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout] help: `result` is captured in macro and introduced a unused variable
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 | /         proc_time!({
[INFO] [stdout] 85 | |             sort::insert_sort(&mut data);
[INFO] [stdout] 86 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    = note: this warning originates in the macro `proc_time` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::Rng;
[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 `flg` is never read
[INFO] [stdout]    --> src/sort.rs:132:19
[INFO] [stdout]     |
[INFO] [stdout] 132 |     let mut flg = false;
[INFO] [stdout]     |                   ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 143 |         flg = false;
[INFO] [stdout]     |         ----------- `flg` 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: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         for i in 0..10000 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 | /         proc_time!({
[INFO] [stdout] 31 | |             sort::bubble_sort(&mut data);
[INFO] [stdout] 32 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout] help: `result` is captured in macro and introduced a unused variable
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 | /         proc_time!({
[INFO] [stdout] 31 | |             sort::bubble_sort(&mut data);
[INFO] [stdout] 32 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    = note: this warning originates in the macro `proc_time` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         for i in 0..10000 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 | /         proc_time!({
[INFO] [stdout] 44 | |             let len =data.len();
[INFO] [stdout] 45 | |             sort::quick_sort(&mut data,0,len-1);
[INFO] [stdout] 46 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout] help: `result` is captured in macro and introduced a unused variable
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 | /         proc_time!({
[INFO] [stdout] 44 | |             let len =data.len();
[INFO] [stdout] 45 | |             sort::quick_sort(&mut data,0,len-1);
[INFO] [stdout] 46 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    = note: this warning originates in the macro `proc_time` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         for i in 0..10000 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 | /         proc_time!({
[INFO] [stdout] 58 | |             let len =data.len();
[INFO] [stdout] 59 | |             sort::merge_sort(&mut data,0,len-1);
[INFO] [stdout] 60 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout] help: `result` is captured in macro and introduced a unused variable
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 | /         proc_time!({
[INFO] [stdout] 58 | |             let len =data.len();
[INFO] [stdout] 59 | |             sort::merge_sort(&mut data,0,len-1);
[INFO] [stdout] 60 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    = note: this warning originates in the macro `proc_time` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         for i in 0..10000 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 71 | /         proc_time!({
[INFO] [stdout] 72 | |             sort::comb_sort(&mut data);
[INFO] [stdout] 73 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout] help: `result` is captured in macro and introduced a unused variable
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 71 | /         proc_time!({
[INFO] [stdout] 72 | |             sort::comb_sort(&mut data);
[INFO] [stdout] 73 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    = note: this warning originates in the macro `proc_time` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         for i in 0..10000 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 | /         proc_time!({
[INFO] [stdout] 85 | |             sort::insert_sort(&mut data);
[INFO] [stdout] 86 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout] help: `result` is captured in macro and introduced a unused variable
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |           let result = $proc;
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 | /         proc_time!({
[INFO] [stdout] 85 | |             sort::insert_sort(&mut data);
[INFO] [stdout] 86 | |         });
[INFO] [stdout]    | |__________- in this macro invocation
[INFO] [stdout]    = note: this warning originates in the macro `proc_time` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.58s
[INFO] running `Command { std: "docker" "inspect" "f80cca07cbfd3b7bd2737531c10c9c8df79955c8606e04c70d1d42bbc1c8a614", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f80cca07cbfd3b7bd2737531c10c9c8df79955c8606e04c70d1d42bbc1c8a614", kill_on_drop: false }`
[INFO] [stdout] f80cca07cbfd3b7bd2737531c10c9c8df79955c8606e04c70d1d42bbc1c8a614
