[INFO] updating cached repository tamamu/roman-numeral-parser
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tamamu/roman-numeral-parser
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tamamu/roman-numeral-parser" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/tamamu/roman-numeral-parser"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/tamamu/roman-numeral-parser'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tamamu/roman-numeral-parser" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/tamamu/roman-numeral-parser"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/tamamu/roman-numeral-parser'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 42686284b72832231327d959447965e0d0b96b4f
[INFO] sha for GitHub repo tamamu/roman-numeral-parser: 42686284b72832231327d959447965e0d0b96b4f
[INFO] validating manifest of tamamu/roman-numeral-parser on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tamamu/roman-numeral-parser on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tamamu/roman-numeral-parser
[INFO] finished frobbing tamamu/roman-numeral-parser
[INFO] frobbed toml for tamamu/roman-numeral-parser written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/tamamu/roman-numeral-parser/Cargo.toml
[INFO] started frobbing tamamu/roman-numeral-parser
[INFO] finished frobbing tamamu/roman-numeral-parser
[INFO] frobbed toml for tamamu/roman-numeral-parser written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/tamamu/roman-numeral-parser/Cargo.toml
[INFO] crate tamamu/roman-numeral-parser already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking tamamu/roman-numeral-parser against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-6/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/tamamu/roman-numeral-parser:/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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ad7485132e73891ab3b2ae419ce2db2f184a53904a279475a7ec6fcf843c4b13
[INFO] running `"docker" "start" "-a" "ad7485132e73891ab3b2ae419ce2db2f184a53904a279475a7ec6fcf843c4b13"`
[INFO] [stderr]     Checking rome_parser v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/main.rs:134:21
[INFO] [stderr]     |
[INFO] [stderr] 134 |                     _ => Err(ParseError::IllegalAlignment)
[INFO] [stderr]     |                     ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `first_max`
[INFO] [stderr]   --> src/main.rs:87:29
[INFO] [stderr]    |
[INFO] [stderr] 87 |                 let (first, first_max) = try!(self.parse_one());
[INFO] [stderr]    |                             ^^^^^^^^^ help: consider prefixing with an underscore: `_first_max`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `second_max`
[INFO] [stderr]    --> src/main.rs:115:42
[INFO] [stderr]     |
[INFO] [stderr] 115 |                             let (second, second_max) = try!(self.parse_one());
[INFO] [stderr]     |                                          ^^^^^^^^^^ help: consider prefixing with an underscore: `_second_max`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:124:33
[INFO] [stderr]     |
[INFO] [stderr] 124 |                     Token::Five(n) => {
[INFO] [stderr]     |                                 ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Unknown`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Unknown
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:173:5
[INFO] [stderr]     |
[INFO] [stderr] 173 |     parser.lex();
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/main.rs:134:21
[INFO] [stderr]     |
[INFO] [stderr] 134 |                     _ => Err(ParseError::IllegalAlignment)
[INFO] [stderr]     |                     ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `first_max`
[INFO] [stderr]   --> src/main.rs:87:29
[INFO] [stderr]    |
[INFO] [stderr] 87 |                 let (first, first_max) = try!(self.parse_one());
[INFO] [stderr]    |                             ^^^^^^^^^ help: consider prefixing with an underscore: `_first_max`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `second_max`
[INFO] [stderr]    --> src/main.rs:115:42
[INFO] [stderr]     |
[INFO] [stderr] 115 |                             let (second, second_max) = try!(self.parse_one());
[INFO] [stderr]     |                                          ^^^^^^^^^^ help: consider prefixing with an underscore: `_second_max`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:124:33
[INFO] [stderr]     |
[INFO] [stderr] 124 |                     Token::Five(n) => {
[INFO] [stderr]     |                                 ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Unknown`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Unknown
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:173:5
[INFO] [stderr]     |
[INFO] [stderr] 173 |     parser.lex();
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `"docker" "inspect" "ad7485132e73891ab3b2ae419ce2db2f184a53904a279475a7ec6fcf843c4b13"`
[INFO] running `"docker" "rm" "-f" "ad7485132e73891ab3b2ae419ce2db2f184a53904a279475a7ec6fcf843c4b13"`
[INFO] [stdout] ad7485132e73891ab3b2ae419ce2db2f184a53904a279475a7ec6fcf843c4b13