[INFO] fetching crate limn-text_layout 0.0.1...
[INFO] testing limn-text_layout-0.0.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate limn-text_layout 0.0.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate limn-text_layout 0.0.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate limn-text_layout 0.0.1
[INFO] finished tweaking crates.io crate limn-text_layout 0.0.1
[INFO] tweaked toml for crates.io crate limn-text_layout 0.0.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b4de68082e2e7a6fbced0b63944a640c88ffcf3e9b598c92356fec0775e7ee0
[INFO] running `Command { std: "docker" "start" "-a" "4b4de68082e2e7a6fbced0b63944a640c88ffcf3e9b598c92356fec0775e7ee0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b4de68082e2e7a6fbced0b63944a640c88ffcf3e9b598c92356fec0775e7ee0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b4de68082e2e7a6fbced0b63944a640c88ffcf3e9b598c92356fec0775e7ee0", kill_on_drop: false }`
[INFO] [stdout] 4b4de68082e2e7a6fbced0b63944a640c88ffcf3e9b598c92356fec0775e7ee0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 081a9e5639368ffa20cbee1f8afb26ed0883b043880ee4a234b1ff45ecd1f590
[INFO] running `Command { std: "docker" "start" "-a" "081a9e5639368ffa20cbee1f8afb26ed0883b043880ee4a234b1ff45ecd1f590", kill_on_drop: false }`
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling linked-hash-map v0.5.4
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling stb_truetype v0.2.8
[INFO] [stderr]    Compiling euclid v0.15.6
[INFO] [stderr]    Compiling rusttype v0.2.4
[INFO] [stderr]    Compiling limn-text_layout v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/line.rs:353:5
[INFO] [stdout]     |
[INFO] [stdout] 353 |     (kern + advance_width)
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.54s
[INFO] running `Command { std: "docker" "inspect" "081a9e5639368ffa20cbee1f8afb26ed0883b043880ee4a234b1ff45ecd1f590", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "081a9e5639368ffa20cbee1f8afb26ed0883b043880ee4a234b1ff45ecd1f590", kill_on_drop: false }`
[INFO] [stdout] 081a9e5639368ffa20cbee1f8afb26ed0883b043880ee4a234b1ff45ecd1f590
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b891b1df04d31db6dfc8f6cd7b2b82e9f392c0550780d04bbd014578e9d7bbb1
[INFO] running `Command { std: "docker" "start" "-a" "b891b1df04d31db6dfc8f6cd7b2b82e9f392c0550780d04bbd014578e9d7bbb1", kill_on_drop: false }`
[INFO] [stderr]    Compiling limn-text_layout v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/line.rs:353:5
[INFO] [stdout]     |
[INFO] [stdout] 353 |     (kern + advance_width)
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/line.rs:353:5
[INFO] [stdout]     |
[INFO] [stdout] 353 |     (kern + advance_width)
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "b891b1df04d31db6dfc8f6cd7b2b82e9f392c0550780d04bbd014578e9d7bbb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b891b1df04d31db6dfc8f6cd7b2b82e9f392c0550780d04bbd014578e9d7bbb1", kill_on_drop: false }`
[INFO] [stdout] b891b1df04d31db6dfc8f6cd7b2b82e9f392c0550780d04bbd014578e9d7bbb1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4cad10a55f3675d18734eb99532d8510c0df1982fb6a1afe61fbcded0ef107a2
[INFO] running `Command { std: "docker" "start" "-a" "4cad10a55f3675d18734eb99532d8510c0df1982fb6a1afe61fbcded0ef107a2", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/line.rs:353:5
[INFO] [stderr]     |
[INFO] [stderr] 353 |     (kern + advance_width)
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `limn-text_layout` (lib) generated 1 warning
[INFO] [stderr] warning: `limn-text_layout` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/limn_text_layout-0130944da0b84b8b)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests limn-text_layout
[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] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> /opt/rustwide/workdir/src/line.rs:353:5
[INFO] [stderr]     |
[INFO] [stderr] 353 |     (kern + advance_width)
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[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" "4cad10a55f3675d18734eb99532d8510c0df1982fb6a1afe61fbcded0ef107a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cad10a55f3675d18734eb99532d8510c0df1982fb6a1afe61fbcded0ef107a2", kill_on_drop: false }`
[INFO] [stdout] 4cad10a55f3675d18734eb99532d8510c0df1982fb6a1afe61fbcded0ef107a2