[INFO] fetching crate layout_engine 0.7.0...
[INFO] testing layout_engine-0.7.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate layout_engine 0.7.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate layout_engine 0.7.0
[INFO] finished tweaking crates.io crate layout_engine 0.7.0
[INFO] tweaked toml for crates.io crate layout_engine 0.7.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate layout_engine 0.7.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 8 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 54382fc54477e97c31d21ea419824e39050bee52d8cdf8c4760768e6786a078d
[INFO] running `Command { std: "docker" "start" "-a" "54382fc54477e97c31d21ea419824e39050bee52d8cdf8c4760768e6786a078d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54382fc54477e97c31d21ea419824e39050bee52d8cdf8c4760768e6786a078d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54382fc54477e97c31d21ea419824e39050bee52d8cdf8c4760768e6786a078d", kill_on_drop: false }`
[INFO] [stdout] 54382fc54477e97c31d21ea419824e39050bee52d8cdf8c4760768e6786a078d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e45a8e83ad9ab65baacf7f8b71cb58e1fce110232cc3ba6d6be3108ae49a3ae
[INFO] running `Command { std: "docker" "start" "-a" "5e45a8e83ad9ab65baacf7f8b71cb58e1fce110232cc3ba6d6be3108ae49a3ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling layout_engine v0.7.0 (/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)]` (part of `#[warn(unused)]`) 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: value assigned to `size` is never read
[INFO] [stdout]    --> src/lib.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         size.natural.x = l.width_for_height(size.natural.y).natural;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "5e45a8e83ad9ab65baacf7f8b71cb58e1fce110232cc3ba6d6be3108ae49a3ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e45a8e83ad9ab65baacf7f8b71cb58e1fce110232cc3ba6d6be3108ae49a3ae", kill_on_drop: false }`
[INFO] [stdout] 5e45a8e83ad9ab65baacf7f8b71cb58e1fce110232cc3ba6d6be3108ae49a3ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c0bf6280e9b9f1a86cd04bf8a20ca1776dec1e9d868194904ad8a433d211608
[INFO] running `Command { std: "docker" "start" "-a" "3c0bf6280e9b9f1a86cd04bf8a20ca1776dec1e9d868194904ad8a433d211608", kill_on_drop: false }`
[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)]` (part of `#[warn(unused)]`) 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: value assigned to `size` is never read
[INFO] [stdout]    --> src/lib.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         size.natural.x = l.width_for_height(size.natural.y).natural;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling layout_engine v0.7.0 (/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)]` (part of `#[warn(unused)]`) 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: value assigned to `size` is never read
[INFO] [stdout]    --> src/lib.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         size.natural.x = l.width_for_height(size.natural.y).natural;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "3c0bf6280e9b9f1a86cd04bf8a20ca1776dec1e9d868194904ad8a433d211608", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c0bf6280e9b9f1a86cd04bf8a20ca1776dec1e9d868194904ad8a433d211608", kill_on_drop: false }`
[INFO] [stdout] 3c0bf6280e9b9f1a86cd04bf8a20ca1776dec1e9d868194904ad8a433d211608
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f965985b3b436f2ea5a7f078d0b0936e6a75e23c117580ddf1b1bb4be532ad5e
[INFO] running `Command { std: "docker" "start" "-a" "f965985b3b436f2ea5a7f078d0b0936e6a75e23c117580ddf1b1bb4be532ad5e", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `auto_count_row`
[INFO] [stderr]    --> src/grid.rs:171:10
[INFO] [stderr]     |
[INFO] [stderr] 171 |     let (auto_count_row, frac_row, frac_row_total, fixed_row) =
[INFO] [stderr]     |          ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_auto_count_row`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `auto_count_column`
[INFO] [stderr]    --> src/grid.rs:174:10
[INFO] [stderr]     |
[INFO] [stderr] 174 |     let (auto_count_column, frac_column, frac_column_total, fixed_column) =
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_auto_count_column`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rect`
[INFO] [stderr]    --> src/grid.rs:260:5
[INFO] [stderr]     |
[INFO] [stderr] 260 |     rect: Rect,
[INFO] [stderr]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_rect`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `size` is never read
[INFO] [stderr]    --> src/lib.rs:123:9
[INFO] [stderr]     |
[INFO] [stderr] 123 |         size.natural.x = l.width_for_height(size.natural.y).natural;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `layout_engine` (lib) generated 4 warnings (run `cargo fix --lib -p layout_engine` to apply 3 suggestions)
[INFO] [stderr] warning: `layout_engine` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/layout_engine-0f542843d40b67ae)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test layout::rect::test::end ... ok
[INFO] [stdout] test layout::rect::test::layout_info ... ok
[INFO] [stdout] test layout::rect::test::new ... ok
[INFO] [stdout] test layout::rect::test::contains ... ok
[INFO] [stdout] test layout::rect::test::intersects ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests layout_engine
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f965985b3b436f2ea5a7f078d0b0936e6a75e23c117580ddf1b1bb4be532ad5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f965985b3b436f2ea5a7f078d0b0936e6a75e23c117580ddf1b1bb4be532ad5e", kill_on_drop: false }`
[INFO] [stdout] f965985b3b436f2ea5a7f078d0b0936e6a75e23c117580ddf1b1bb4be532ad5e