[INFO] cloning repository https://github.com/gbersac/n_puzzle_42
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gbersac/n_puzzle_42" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgbersac%2Fn_puzzle_42", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgbersac%2Fn_puzzle_42'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cb0a3b3888123ba4f830ba93ce1b9f792a0e26dd
[INFO] documenting gbersac/n_puzzle_42 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%2Fgbersac%2Fn_puzzle_42" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gbersac/n_puzzle_42 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/gbersac/n_puzzle_42
[INFO] finished tweaking git repo https://github.com/gbersac/n_puzzle_42
[INFO] tweaked toml for git repo https://github.com/gbersac/n_puzzle_42 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/gbersac/n_puzzle_42 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] [stderr] error: the lock file /workspace/builds/worker-8/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded term-painter v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stdout] a1f6d76dd8acc3a096e927edc2e499bedb4fe49c9a0bef2f21c32eed5821f8f0
[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" "a1f6d76dd8acc3a096e927edc2e499bedb4fe49c9a0bef2f21c32eed5821f8f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1f6d76dd8acc3a096e927edc2e499bedb4fe49c9a0bef2f21c32eed5821f8f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1f6d76dd8acc3a096e927edc2e499bedb4fe49c9a0bef2f21c32eed5821f8f0", kill_on_drop: false }`
[INFO] [stdout] a1f6d76dd8acc3a096e927edc2e499bedb4fe49c9a0bef2f21c32eed5821f8f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a908fd3f3969d0a79c4e29d6eb1a4740c077d6d0c55698479a768a7432f98f89
[INFO] running `Command { std: "docker" "start" "-a" "a908fd3f3969d0a79c4e29d6eb1a4740c077d6d0c55698479a768a7432f98f89", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking term-painter v0.2.4
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]  Documenting npuzzle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/npuzzle/npuzzle.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |         for i in (0..self.nb_tile()) {
[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 `for` iterator expression
[INFO] [stdout]   --> src/npuzzle/npuzzle.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |         for _ in (0..(size * size)) {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/npuzzle/npuzzle.rs:100:12
[INFO] [stdout]     |
[INFO] [stdout] 100 |         for i in (0..used_numbers.len()) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/npuzzle/npuzzle.rs:122:12
[INFO] [stdout]     |
[INFO] [stdout] 122 |         for _ in (0..board.nb_tile()) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/npuzzle/npuzzle.rs:204:12
[INFO] [stdout]     |
[INFO] [stdout] 204 |         for i in (0..self.nb_tile()) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/npuzzle/npuzzle.rs:234:12
[INFO] [stdout]     |
[INFO] [stdout] 234 |         for i in (0..board.nb_tile()) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/npuzzle/board.rs:116:12
[INFO] [stdout]     |
[INFO] [stdout] 116 |         for i in (0..self.nb_tile()) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/npuzzle/board.rs:146:12
[INFO] [stdout]     |
[INFO] [stdout] 146 |         for y in (0..self.size) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/npuzzle/board.rs:147:13
[INFO] [stdout]     |
[INFO] [stdout] 147 |             for x in (0..self.size) {
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/npuzzle/board.rs:161:15
[INFO] [stdout]     |
[INFO] [stdout] 161 |         for i in (0..self.nb_tile()) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.82s
[INFO] running `Command { std: "docker" "inspect" "a908fd3f3969d0a79c4e29d6eb1a4740c077d6d0c55698479a768a7432f98f89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a908fd3f3969d0a79c4e29d6eb1a4740c077d6d0c55698479a768a7432f98f89", kill_on_drop: false }`
[INFO] [stdout] a908fd3f3969d0a79c4e29d6eb1a4740c077d6d0c55698479a768a7432f98f89