[INFO] fetching crate ruroonga_command 0.3.4...
[INFO] extracting crate ruroonga_command 0.3.4 into work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/reg/ruroonga_command/0.3.4
[INFO] extracting crate ruroonga_command 0.3.4 into work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/reg/ruroonga_command/0.3.4
[INFO] validating manifest of ruroonga_command-0.3.4 on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ruroonga_command-0.3.4 on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ruroonga_command-0.3.4
[INFO] finished frobbing ruroonga_command-0.3.4
[INFO] frobbed toml for ruroonga_command-0.3.4 written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/reg/ruroonga_command/0.3.4/Cargo.toml
[INFO] started frobbing ruroonga_command-0.3.4
[INFO] finished frobbing ruroonga_command-0.3.4
[INFO] frobbed toml for ruroonga_command-0.3.4 written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/reg/ruroonga_command/0.3.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ruroonga_command-0.3.4 against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-6/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/reg/ruroonga_command/0.3.4:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 607c9d61d6eb230bf44a281bc2d75b5ec73eff732ef86a5f3e4056f7a16344e8
[INFO] running `"docker" "start" "-a" "607c9d61d6eb230bf44a281bc2d75b5ec73eff732ef86a5f3e4056f7a16344e8"`
[INFO] [stderr]     Checking pulldown-cmark v0.0.3
[INFO] [stderr]     Checking url v1.2.4
[INFO] [stderr]    Compiling skeptic v0.6.1
[INFO] [stderr]    Compiling ruroonga_command v0.3.4 (/opt/crater/workdir)
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/commandlinable/mod.rs:28:17
[INFO] [stderr]    |
[INFO] [stderr] 28 |                 /// It should escape aginst special characters (\n, \\)
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/types/data_type.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 |             /// For future extensibility.
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/types/data_type.rs:82:17
[INFO] [stderr]    |
[INFO] [stderr] 82 |                 /// For future extensibility.
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]    --> src/types/data_type.rs:108:13
[INFO] [stderr]     |
[INFO] [stderr] 108 |             /// For future extensibility.
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/selectable/staged_columns.rs:49:17
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 /// For future extensibility.
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/commandlinable/mod.rs:28:17
[INFO] [stderr]    |
[INFO] [stderr] 28 |                 /// It should escape aginst special characters (\n, \\)
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/types/data_type.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 |             /// For future extensibility.
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/types/data_type.rs:82:17
[INFO] [stderr]    |
[INFO] [stderr] 82 |                 /// For future extensibility.
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]    --> src/types/data_type.rs:108:13
[INFO] [stderr]     |
[INFO] [stderr] 108 |             /// For future extensibility.
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/selectable/staged_columns.rs:49:17
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 /// For future extensibility.
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.97s
[INFO] running `"docker" "inspect" "607c9d61d6eb230bf44a281bc2d75b5ec73eff732ef86a5f3e4056f7a16344e8"`
[INFO] running `"docker" "rm" "-f" "607c9d61d6eb230bf44a281bc2d75b5ec73eff732ef86a5f3e4056f7a16344e8"`
[INFO] [stdout] 607c9d61d6eb230bf44a281bc2d75b5ec73eff732ef86a5f3e4056f7a16344e8