[INFO] cloning repository https://github.com/Yes25/mine_sweeper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Yes25/mine_sweeper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYes25%2Fmine_sweeper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYes25%2Fmine_sweeper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4922d0f02a296e984a5cea0889a30de9b898017
[INFO] building Yes25/mine_sweeper against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYes25%2Fmine_sweeper" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Yes25/mine_sweeper on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Yes25/mine_sweeper
[INFO] finished tweaking git repo https://github.com/Yes25/mine_sweeper
[INFO] tweaked toml for git repo https://github.com/Yes25/mine_sweeper written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Yes25/mine_sweeper 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8741896a1ed59d5fe9281f9dde92cf029387b1ba70676f8120c1cf49241d5d67
[INFO] running `Command { std: "docker" "start" "-a" "8741896a1ed59d5fe9281f9dde92cf029387b1ba70676f8120c1cf49241d5d67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8741896a1ed59d5fe9281f9dde92cf029387b1ba70676f8120c1cf49241d5d67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8741896a1ed59d5fe9281f9dde92cf029387b1ba70676f8120c1cf49241d5d67", kill_on_drop: false }`
[INFO] [stdout] 8741896a1ed59d5fe9281f9dde92cf029387b1ba70676f8120c1cf49241d5d67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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 -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea4ff780d7cc5b871177f406ff8ee1ce39e93d8baf6d7aacc223bafb3424c651
[INFO] running `Command { std: "docker" "start" "-a" "ea4ff780d7cc5b871177f406ff8ee1ce39e93d8baf6d7aacc223bafb3424c651", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling getrandom v0.2.10
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling mine_sweeper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `command` is never read
[INFO] [stdout]   --> src/main.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let mut command = String::new();
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.29s
[INFO] running `Command { std: "docker" "inspect" "ea4ff780d7cc5b871177f406ff8ee1ce39e93d8baf6d7aacc223bafb3424c651", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea4ff780d7cc5b871177f406ff8ee1ce39e93d8baf6d7aacc223bafb3424c651", kill_on_drop: false }`
[INFO] [stdout] ea4ff780d7cc5b871177f406ff8ee1ce39e93d8baf6d7aacc223bafb3424c651
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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 -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71c8ccd27b5a463fe1a32c95427e760775078eebd8f148a89af892c5727a7121
[INFO] running `Command { std: "docker" "start" "-a" "71c8ccd27b5a463fe1a32c95427e760775078eebd8f148a89af892c5727a7121", kill_on_drop: false }`
[INFO] [stderr]    Compiling mine_sweeper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `command` is never read
[INFO] [stdout]   --> src/main.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let mut command = String::new();
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "71c8ccd27b5a463fe1a32c95427e760775078eebd8f148a89af892c5727a7121", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71c8ccd27b5a463fe1a32c95427e760775078eebd8f148a89af892c5727a7121", kill_on_drop: false }`
[INFO] [stdout] 71c8ccd27b5a463fe1a32c95427e760775078eebd8f148a89af892c5727a7121