[INFO] updating cached repository keorn/parity-spec
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/keorn/parity-spec
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/keorn/parity-spec" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/keorn/parity-spec"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/keorn/parity-spec'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/keorn/parity-spec" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/keorn/parity-spec"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/keorn/parity-spec'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e6b89769c8468da306036e4236481eb3b4c77a74
[INFO] sha for GitHub repo keorn/parity-spec: e6b89769c8468da306036e4236481eb3b4c77a74
[INFO] validating manifest of keorn/parity-spec on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of keorn/parity-spec on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing keorn/parity-spec
[INFO] finished frobbing keorn/parity-spec
[INFO] frobbed toml for keorn/parity-spec written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/keorn/parity-spec/Cargo.toml
[INFO] started frobbing keorn/parity-spec
[INFO] finished frobbing keorn/parity-spec
[INFO] frobbed toml for keorn/parity-spec written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/keorn/parity-spec/Cargo.toml
[INFO] crate keorn/parity-spec already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking keorn/parity-spec against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-5/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/keorn/parity-spec:/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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2d5dc9ed878254016b98145f1e28cafd7f3c066a8305573ffc74c958ba611150
[INFO] running `"docker" "start" "-a" "2d5dc9ed878254016b98145f1e28cafd7f3c066a8305573ffc74c958ba611150"`
[INFO] [stderr]    Compiling syn v0.11.4
[INFO] [stderr]    Compiling serde_codegen_internals v0.13.0
[INFO] [stderr]    Compiling serde_derive v0.9.7
[INFO] [stderr]     Checking chain_spec v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:121:2
[INFO] [stderr]     |
[INFO] [stderr] 121 |     /// Read Geth chain spec.
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 122 |     let mut args = env::args();
[INFO] [stderr]     |     --------------------------- rustdoc does not generate documentation for statements
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:135:2
[INFO] [stderr]     |
[INFO] [stderr] 135 |     /// Ask for additional info which Geth does not include in the file.
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 136 |     println!("Please enter Geth's --networkid option value (required):");
[INFO] [stderr]     |     --------------------------------------------------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:185:2
[INFO] [stderr]     |
[INFO] [stderr] 185 |       /// Construct Parity chain spec.
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 186 |       let parity_ethash = ParityEthash {
[INFO] [stderr]     |  _____-
[INFO] [stderr] 187 | |         minimumDifficulty: "0x20000".into(),
[INFO] [stderr] 188 | |         difficultyBoundDivisor: "0x800".into(),
[INFO] [stderr] 189 | |         durationLimit: "0xd".into(),
[INFO] [stderr] ...   |
[INFO] [stderr] 197 | |         eip161dTransition: geth_config.eip160Block,
[INFO] [stderr] 198 | |     };
[INFO] [stderr]     | |______- rustdoc does not generate documentation for statements
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:121:2
[INFO] [stderr]     |
[INFO] [stderr] 121 |     /// Read Geth chain spec.
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 122 |     let mut args = env::args();
[INFO] [stderr]     |     --------------------------- rustdoc does not generate documentation for statements
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:135:2
[INFO] [stderr]     |
[INFO] [stderr] 135 |     /// Ask for additional info which Geth does not include in the file.
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 136 |     println!("Please enter Geth's --networkid option value (required):");
[INFO] [stderr]     |     --------------------------------------------------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:185:2
[INFO] [stderr]     |
[INFO] [stderr] 185 |       /// Construct Parity chain spec.
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 186 |       let parity_ethash = ParityEthash {
[INFO] [stderr]     |  _____-
[INFO] [stderr] 187 | |         minimumDifficulty: "0x20000".into(),
[INFO] [stderr] 188 | |         difficultyBoundDivisor: "0x800".into(),
[INFO] [stderr] 189 | |         durationLimit: "0xd".into(),
[INFO] [stderr] ...   |
[INFO] [stderr] 197 | |         eip161dTransition: geth_config.eip160Block,
[INFO] [stderr] 198 | |     };
[INFO] [stderr]     | |______- rustdoc does not generate documentation for statements
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `eip158Block`
[INFO] [stderr]   --> src/main.rs:27:2
[INFO] [stderr]    |
[INFO] [stderr] 27 |     eip158Block: u64,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `eip158Block`
[INFO] [stderr]   --> src/main.rs:27:2
[INFO] [stderr]    |
[INFO] [stderr] 27 |     eip158Block: u64,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.36s
[INFO] running `"docker" "inspect" "2d5dc9ed878254016b98145f1e28cafd7f3c066a8305573ffc74c958ba611150"`
[INFO] running `"docker" "rm" "-f" "2d5dc9ed878254016b98145f1e28cafd7f3c066a8305573ffc74c958ba611150"`
[INFO] [stdout] 2d5dc9ed878254016b98145f1e28cafd7f3c066a8305573ffc74c958ba611150