[INFO] cloning repository https://github.com/h1g0/for_procon
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/h1g0/for_procon" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh1g0%2Ffor_procon", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh1g0%2Ffor_procon'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f559f434bc3946391a8d3848c039bf9dca13b7ee
[INFO] checking h1g0/for_procon against master#6526e5c772f2da07db745c94ca6bb0a591a39ba4 for pr-80920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh1g0%2Ffor_procon" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/h1g0/for_procon on toolchain 6526e5c772f2da07db745c94ca6bb0a591a39ba4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/h1g0/for_procon
[INFO] finished tweaking git repo https://github.com/h1g0/for_procon
[INFO] tweaked toml for git repo https://github.com/h1g0/for_procon written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/h1g0/for_procon already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39ed5bde99e5f77d28f8a23182d8cdbd5e16b302ce7b08da17d79bf34a1c7a24
[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" "39ed5bde99e5f77d28f8a23182d8cdbd5e16b302ce7b08da17d79bf34a1c7a24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39ed5bde99e5f77d28f8a23182d8cdbd5e16b302ce7b08da17d79bf34a1c7a24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39ed5bde99e5f77d28f8a23182d8cdbd5e16b302ce7b08da17d79bf34a1c7a24", kill_on_drop: false }`
[INFO] [stdout] 39ed5bde99e5f77d28f8a23182d8cdbd5e16b302ce7b08da17d79bf34a1c7a24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e8e25533294abcb0dd2d938dfc3cec8e9dc5b44df6bf241f15fc2c9a5d0e6fb
[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" "1e8e25533294abcb0dd2d938dfc3cec8e9dc5b44df6bf241f15fc2c9a5d0e6fb", kill_on_drop: false }`
[INFO] [stderr]     Checking for_procon v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 126 |       /// write inputs for test cases here.
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 133 | /     r"
[INFO] [stdout] 134 | |     "=>"",
[INFO] [stdout]     | |_____- rustdoc does not generate documentation for expressions
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:127:5
[INFO] [stdout]     |
[INFO] [stdout] 127 |       /// e.g.) 
[INFO] [stdout]     |       ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 133 | /     r"
[INFO] [stdout] 134 | |     "=>"",
[INFO] [stdout]     | |_____- rustdoc does not generate documentation for expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:128:5
[INFO] [stdout]     |
[INFO] [stdout] 128 |       /// ```
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 133 | /     r"
[INFO] [stdout] 134 | |     "=>"",
[INFO] [stdout]     | |_____- rustdoc does not generate documentation for expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:129:5
[INFO] [stdout]     |
[INFO] [stdout] 129 |       /// "1 2 3"=>"4",
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 133 | /     r"
[INFO] [stdout] 134 | |     "=>"",
[INFO] [stdout]     | |_____- rustdoc does not generate documentation for expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:130:5
[INFO] [stdout]     |
[INFO] [stdout] 130 |       /// r"4 5 6
[INFO] [stdout]     |       ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 133 | /     r"
[INFO] [stdout] 134 | |     "=>"",
[INFO] [stdout]     | |_____- rustdoc does not generate documentation for expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:131:5
[INFO] [stdout]     |
[INFO] [stdout] 131 |       ///   7 8 9"=>"10",
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 132 |       /// ```
[INFO] [stdout] 133 | /     r"
[INFO] [stdout] 134 | |     "=>"",
[INFO] [stdout]     | |_____- rustdoc does not generate documentation for expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:132:5
[INFO] [stdout]     |
[INFO] [stdout] 132 |       /// ```
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout] 133 | /     r"
[INFO] [stdout] 134 | |     "=>"",
[INFO] [stdout]     | |_____- rustdoc does not generate documentation for expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "1e8e25533294abcb0dd2d938dfc3cec8e9dc5b44df6bf241f15fc2c9a5d0e6fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e8e25533294abcb0dd2d938dfc3cec8e9dc5b44df6bf241f15fc2c9a5d0e6fb", kill_on_drop: false }`
[INFO] [stdout] 1e8e25533294abcb0dd2d938dfc3cec8e9dc5b44df6bf241f15fc2c9a5d0e6fb