[INFO] updating cached repository darksv/futon
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/darksv/futon
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/darksv/futon" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/darksv/futon"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/darksv/futon'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/darksv/futon" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/darksv/futon"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/darksv/futon'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c1641aa859df9f05a202bc5e0d9416009fefa051
[INFO] sha for GitHub repo darksv/futon: c1641aa859df9f05a202bc5e0d9416009fefa051
[INFO] validating manifest of darksv/futon on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of darksv/futon on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing darksv/futon
[INFO] finished frobbing darksv/futon
[INFO] frobbed toml for darksv/futon written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/darksv/futon/Cargo.toml
[INFO] started frobbing darksv/futon
[INFO] finished frobbing darksv/futon
[INFO] frobbed toml for darksv/futon written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/darksv/futon/Cargo.toml
[INFO] crate darksv/futon already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking darksv/futon against try#99a7498759a22b5684caf798a98b7e90ad9d2443 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-1/try#99a7498759a22b5684caf798a98b7e90ad9d2443:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/darksv/futon:/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" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f95e4726a6d413654b064619fbcf99164dc87b9c1894fde4908f593dbc3b4d3e
[INFO] running `"docker" "start" "-a" "f95e4726a6d413654b064619fbcf99164dc87b9c1894fde4908f593dbc3b4d3e"`
[INFO] [stderr]     Checking untitled v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/lexer.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 |   /// Registration of keywords supported by language
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 30 | / keywords! {
[INFO] [stderr] 31 | |     "if" => If,
[INFO] [stderr] 32 | |     "else" => Else,
[INFO] [stderr] 33 | |     "for" => For,
[INFO] [stderr] ...  |
[INFO] [stderr] 42 | |     "in" => In
[INFO] [stderr] 43 | | }
[INFO] [stderr]    | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] on by default
[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/lexer.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 |   /// Registration of keywords supported by language
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 30 | / keywords! {
[INFO] [stderr] 31 | |     "if" => If,
[INFO] [stderr] 32 | |     "else" => Else,
[INFO] [stderr] 33 | |     "for" => For,
[INFO] [stderr] ...  |
[INFO] [stderr] 42 | |     "in" => In
[INFO] [stderr] 43 | | }
[INFO] [stderr]    | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] on by default
[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 import: `PunctKind`
[INFO] [stderr]    --> src/lexer.rs:540:87
[INFO] [stderr]     |
[INFO] [stderr] 540 |     use super::{Lexer, LexerError, Token, SourceSpan, TokenType, TokenValue, Keyword, PunctKind};
[INFO] [stderr]     |                                                                                       ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_str`
[INFO] [stderr]    --> src/lexer.rs:235:5
[INFO] [stderr]     |
[INFO] [stderr] 235 |     pub fn from_str(str: &'a str, line: usize, column: usize) -> SourceSpan<'a> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.51s
[INFO] running `"docker" "inspect" "f95e4726a6d413654b064619fbcf99164dc87b9c1894fde4908f593dbc3b4d3e"`
[INFO] running `"docker" "rm" "-f" "f95e4726a6d413654b064619fbcf99164dc87b9c1894fde4908f593dbc3b4d3e"`
[INFO] [stdout] f95e4726a6d413654b064619fbcf99164dc87b9c1894fde4908f593dbc3b4d3e