[INFO] fetching crate layout_engine 0.6.0...
[INFO] checking layout_engine-0.6.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate layout_engine 0.6.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate layout_engine 0.6.0 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate layout_engine 0.6.0
[INFO] finished tweaking crates.io crate layout_engine 0.6.0
[INFO] tweaked toml for crates.io crate layout_engine 0.6.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3cf3f9caa9e7e3c6d15a19903ab338055c8b4411cee8ac65990b3218a6d5def
[INFO] running `Command { std: "docker" "start" "-a" "a3cf3f9caa9e7e3c6d15a19903ab338055c8b4411cee8ac65990b3218a6d5def", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3cf3f9caa9e7e3c6d15a19903ab338055c8b4411cee8ac65990b3218a6d5def", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3cf3f9caa9e7e3c6d15a19903ab338055c8b4411cee8ac65990b3218a6d5def", kill_on_drop: false }`
[INFO] [stdout] a3cf3f9caa9e7e3c6d15a19903ab338055c8b4411cee8ac65990b3218a6d5def
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d74f53bf8e21dfe5a2d23115b59b84f9445d4224e1c5207b66785d630c401fbf
[INFO] running `Command { std: "docker" "start" "-a" "d74f53bf8e21dfe5a2d23115b59b84f9445d4224e1c5207b66785d630c401fbf", kill_on_drop: false }`
[INFO] [stderr]     Checking layout_engine v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `auto_count_row`
[INFO] [stdout]    --> src/grid.rs:171:10
[INFO] [stdout]     |
[INFO] [stdout] 171 |     let (auto_count_row, frac_row, frac_row_total, fixed_row) =
[INFO] [stdout]     |          ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_auto_count_row`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `auto_count_column`
[INFO] [stdout]    --> src/grid.rs:174:10
[INFO] [stdout]     |
[INFO] [stdout] 174 |     let (auto_count_column, frac_column, frac_column_total, fixed_column) =
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_auto_count_column`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rect`
[INFO] [stdout]    --> src/grid.rs:260:5
[INFO] [stdout]     |
[INFO] [stdout] 260 |     rect: Rect,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_rect`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `auto_count_row`
[INFO] [stdout]    --> src/grid.rs:171:10
[INFO] [stdout]     |
[INFO] [stdout] 171 |     let (auto_count_row, frac_row, frac_row_total, fixed_row) =
[INFO] [stdout]     |          ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_auto_count_row`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `auto_count_column`
[INFO] [stdout]    --> src/grid.rs:174:10
[INFO] [stdout]     |
[INFO] [stdout] 174 |     let (auto_count_column, frac_column, frac_column_total, fixed_column) =
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_auto_count_column`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rect`
[INFO] [stdout]    --> src/grid.rs:260:5
[INFO] [stdout]     |
[INFO] [stdout] 260 |     rect: Rect,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_rect`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "d74f53bf8e21dfe5a2d23115b59b84f9445d4224e1c5207b66785d630c401fbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d74f53bf8e21dfe5a2d23115b59b84f9445d4224e1c5207b66785d630c401fbf", kill_on_drop: false }`
[INFO] [stdout] d74f53bf8e21dfe5a2d23115b59b84f9445d4224e1c5207b66785d630c401fbf