[INFO] cloning repository https://github.com/Edwolfbear/domino
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Edwolfbear/domino" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEdwolfbear%2Fdomino", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEdwolfbear%2Fdomino'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 91f48703ce860d25d146156ed1e42027232185c4
[INFO] checking Edwolfbear/domino against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEdwolfbear%2Fdomino" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Edwolfbear/domino on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Edwolfbear/domino
[INFO] finished tweaking git repo https://github.com/Edwolfbear/domino
[INFO] tweaked toml for git repo https://github.com/Edwolfbear/domino written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Edwolfbear/domino already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fcf33b05d8fd59cde25ac17189d589cd7706d5d732c2a9eacb6100fe18b4f2e4
[INFO] running `Command { std: "docker" "start" "-a" "fcf33b05d8fd59cde25ac17189d589cd7706d5d732c2a9eacb6100fe18b4f2e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fcf33b05d8fd59cde25ac17189d589cd7706d5d732c2a9eacb6100fe18b4f2e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcf33b05d8fd59cde25ac17189d589cd7706d5d732c2a9eacb6100fe18b4f2e4", kill_on_drop: false }`
[INFO] [stdout] fcf33b05d8fd59cde25ac17189d589cd7706d5d732c2a9eacb6100fe18b4f2e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b0fadb4838b35d4cc9376b3bd9975f83744e05eaafa4fb2b7752056e2b09a23
[INFO] running `Command { std: "docker" "start" "-a" "4b0fadb4838b35d4cc9376b3bd9975f83744e05eaafa4fb2b7752056e2b09a23", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking Domino v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `title`
[INFO] [stdout]   --> src/main.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn prints(&self, title : &str) {  }
[INFO] [stdout]    |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_title`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:169:21
[INFO] [stdout]     |
[INFO] [stdout] 169 |                 for i in 0..7 {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         io::stdin().read_line(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `title`
[INFO] [stdout]   --> src/main.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn prints(&self, title : &str) {  }
[INFO] [stdout]    |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_title`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:169:21
[INFO] [stdout]     |
[INFO] [stdout] 169 |                 for i in 0..7 {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         io::stdin().read_line(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "4b0fadb4838b35d4cc9376b3bd9975f83744e05eaafa4fb2b7752056e2b09a23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b0fadb4838b35d4cc9376b3bd9975f83744e05eaafa4fb2b7752056e2b09a23", kill_on_drop: false }`
[INFO] [stdout] 4b0fadb4838b35d4cc9376b3bd9975f83744e05eaafa4fb2b7752056e2b09a23