[INFO] cloning repository https://github.com/Yixf-Self/MutationScan
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Yixf-Self/MutationScan" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYixf-Self%2FMutationScan", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYixf-Self%2FMutationScan'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b96f9176772372aeb7efa12aac03d8b24e6f4c7e
[INFO] documenting Yixf-Self/MutationScan against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYixf-Self%2FMutationScan" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Yixf-Self/MutationScan on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Yixf-Self/MutationScan
[INFO] finished tweaking git repo https://github.com/Yixf-Self/MutationScan
[INFO] tweaked toml for git repo https://github.com/Yixf-Self/MutationScan written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Yixf-Self/MutationScan already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6bc67eba11b41d2632eb844a993c45349ddfca548371e24f74dd3f4cc6d32428
[INFO] running `Command { std: "docker" "start" "-a" "6bc67eba11b41d2632eb844a993c45349ddfca548371e24f74dd3f4cc6d32428", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6bc67eba11b41d2632eb844a993c45349ddfca548371e24f74dd3f4cc6d32428", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bc67eba11b41d2632eb844a993c45349ddfca548371e24f74dd3f4cc6d32428", kill_on_drop: false }`
[INFO] [stdout] 6bc67eba11b41d2632eb844a993c45349ddfca548371e24f74dd3f4cc6d32428
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df466ea000df518997cee7c738e29cfb7996cdf3875b629289d54f74c3b4a9f9
[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" "df466ea000df518997cee7c738e29cfb7996cdf3875b629289d54f74c3b4a9f9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting MutationScan v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]   --> src/main.rs:52:23
[INFO] [stdout]    |
[INFO] [stdout] 52 |                 match ( cnt % 4) {
[INFO] [stdout]    |                       ^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]    --> src/main.rs:125:23
[INFO] [stdout]     |
[INFO] [stdout] 125 |                 match (cnt % 2) {
[INFO] [stdout]     |                       ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:402:12
[INFO] [stdout]     |
[INFO] [stdout] 402 |         if (it.seq.clone()[min_edis_index..min_edis_index+len2].chars().nth(idx) != snp.seq.clone().chars().nth(idx)) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:408:7
[INFO] [stdout]     |
[INFO] [stdout] 408 |     if(ed_dis <= threshold_value) {
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:416:11
[INFO] [stdout]     |
[INFO] [stdout] 416 |         if(flag == true) {
[INFO] [stdout]     |           ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:446:23
[INFO] [stdout]     |
[INFO] [stdout] 446 |                     if(len1 <= len2) {continue;}
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:483:31
[INFO] [stdout]     |
[INFO] [stdout] 483 | ...                   if(len1 <= len2) {continue;}
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:498:31
[INFO] [stdout]     |
[INFO] [stdout] 498 | ...                   if(len1 <= len2){continue;}
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:499:31
[INFO] [stdout]     |
[INFO] [stdout] 499 | ...                   if(len3 <= len2){continue;}
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.28s
[INFO] running `Command { std: "docker" "inspect" "df466ea000df518997cee7c738e29cfb7996cdf3875b629289d54f74c3b4a9f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df466ea000df518997cee7c738e29cfb7996cdf3875b629289d54f74c3b4a9f9", kill_on_drop: false }`
[INFO] [stdout] df466ea000df518997cee7c738e29cfb7996cdf3875b629289d54f74c3b4a9f9