[INFO] cloning repository https://github.com/dclamage/simple-loop-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dclamage/simple-loop-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdclamage%2Fsimple-loop-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdclamage%2Fsimple-loop-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1b11688046a1832ea53b16f290023fa3b615d898
[INFO] building dclamage/simple-loop-solver 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%2Fdclamage%2Fsimple-loop-solver" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dclamage/simple-loop-solver 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/dclamage/simple-loop-solver
[INFO] finished tweaking git repo https://github.com/dclamage/simple-loop-solver
[INFO] tweaked toml for git repo https://github.com/dclamage/simple-loop-solver written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dclamage/simple-loop-solver 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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 597ec40fb00c9794d9ae5670be97372ea065750a669aa8c0b63c32141430dad8
[INFO] running `Command { std: "docker" "start" "-a" "597ec40fb00c9794d9ae5670be97372ea065750a669aa8c0b63c32141430dad8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "597ec40fb00c9794d9ae5670be97372ea065750a669aa8c0b63c32141430dad8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "597ec40fb00c9794d9ae5670be97372ea065750a669aa8c0b63c32141430dad8", kill_on_drop: false }`
[INFO] [stdout] 597ec40fb00c9794d9ae5670be97372ea065750a669aa8c0b63c32141430dad8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] b33edee130df8ff39331a0af00d25b3baa2575ffaaf114bb6643db961e79a8af
[INFO] running `Command { std: "docker" "start" "-a" "b33edee130df8ff39331a0af00d25b3baa2575ffaaf114bb6643db961e79a8af", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple-loop-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `original_grid` is never read
[INFO] [stdout]    --> src/main.rs:155:5
[INFO] [stdout]     |
[INFO] [stdout] 154 | struct SloopEdges {
[INFO] [stdout]     |        ---------- field in this struct
[INFO] [stdout] 155 |     original_grid: u64,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SloopEdges` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `path_to_string` is never used
[INFO] [stdout]    --> src/main.rs:289:8
[INFO] [stdout]     |
[INFO] [stdout] 163 | impl SloopEdges {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 289 |     fn path_to_string(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "b33edee130df8ff39331a0af00d25b3baa2575ffaaf114bb6643db961e79a8af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b33edee130df8ff39331a0af00d25b3baa2575ffaaf114bb6643db961e79a8af", kill_on_drop: false }`
[INFO] [stdout] b33edee130df8ff39331a0af00d25b3baa2575ffaaf114bb6643db961e79a8af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] d388189582223dbafe6b54068d5c709425882f411de88fae71c4015288cc8618
[INFO] running `Command { std: "docker" "start" "-a" "d388189582223dbafe6b54068d5c709425882f411de88fae71c4015288cc8618", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple-loop-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `original_grid` is never read
[INFO] [stdout]    --> src/main.rs:155:5
[INFO] [stdout]     |
[INFO] [stdout] 154 | struct SloopEdges {
[INFO] [stdout]     |        ---------- field in this struct
[INFO] [stdout] 155 |     original_grid: u64,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SloopEdges` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `path_to_string` is never used
[INFO] [stdout]    --> src/main.rs:289:8
[INFO] [stdout]     |
[INFO] [stdout] 163 | impl SloopEdges {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 289 |     fn path_to_string(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "d388189582223dbafe6b54068d5c709425882f411de88fae71c4015288cc8618", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d388189582223dbafe6b54068d5c709425882f411de88fae71c4015288cc8618", kill_on_drop: false }`
[INFO] [stdout] d388189582223dbafe6b54068d5c709425882f411de88fae71c4015288cc8618