[INFO] updating cached repository samuelweil/yacc-shaving
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/samuelweil/yacc-shaving
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/samuelweil/yacc-shaving" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/samuelweil/yacc-shaving"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/samuelweil/yacc-shaving'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/samuelweil/yacc-shaving" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/samuelweil/yacc-shaving"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/samuelweil/yacc-shaving'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b190c2c1b2f2261d91825bd759d66700af80264b
[INFO] sha for GitHub repo samuelweil/yacc-shaving: b190c2c1b2f2261d91825bd759d66700af80264b
[INFO] validating manifest of samuelweil/yacc-shaving on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of samuelweil/yacc-shaving on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing samuelweil/yacc-shaving
[INFO] finished frobbing samuelweil/yacc-shaving
[INFO] frobbed toml for samuelweil/yacc-shaving written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/samuelweil/yacc-shaving/Cargo.toml
[INFO] started frobbing samuelweil/yacc-shaving
[INFO] finished frobbing samuelweil/yacc-shaving
[INFO] frobbed toml for samuelweil/yacc-shaving written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/samuelweil/yacc-shaving/Cargo.toml
[INFO] crate samuelweil/yacc-shaving already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking samuelweil/yacc-shaving against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-0/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/samuelweil/yacc-shaving:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4f612f5e3905835c28b085cfee232be2014e5346555425ea91417c1a7f5b8fbc
[INFO] running `"docker" "start" "-a" "4f612f5e3905835c28b085cfee232be2014e5346555425ea91417c1a7f5b8fbc"`
[INFO] [stderr]     Checking nom v4.2.3
[INFO] [stderr]     Checking yaul v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]  --> src/lexer/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::str::FromStr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]  --> src/lexer/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::str::FromStr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Integer`
[INFO] [stderr]  --> src/lexer/token.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Integer(i64),
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Plus`
[INFO] [stderr]  --> src/lexer/token.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Plus,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Minus`
[INFO] [stderr]  --> src/lexer/token.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Minus
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Integer`
[INFO] [stderr]  --> src/lexer/token.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Integer(i64),
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.68s
[INFO] running `"docker" "inspect" "4f612f5e3905835c28b085cfee232be2014e5346555425ea91417c1a7f5b8fbc"`
[INFO] running `"docker" "rm" "-f" "4f612f5e3905835c28b085cfee232be2014e5346555425ea91417c1a7f5b8fbc"`
[INFO] [stdout] 4f612f5e3905835c28b085cfee232be2014e5346555425ea91417c1a7f5b8fbc