[INFO] updating cached repository thecreamedcorn/peg_rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/thecreamedcorn/peg_rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/thecreamedcorn/peg_rs" "work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/gh/thecreamedcorn/peg_rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/gh/thecreamedcorn/peg_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/thecreamedcorn/peg_rs" "work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/gh/thecreamedcorn/peg_rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/gh/thecreamedcorn/peg_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 446114320b5baa4cb9ebcab14215fb3871a8ed76
[INFO] sha for GitHub repo thecreamedcorn/peg_rs: 446114320b5baa4cb9ebcab14215fb3871a8ed76
[INFO] validating manifest of thecreamedcorn/peg_rs on toolchain master#1891bfa80364eead426517c68de6947b7692e2de
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of thecreamedcorn/peg_rs on toolchain try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing thecreamedcorn/peg_rs
[INFO] finished frobbing thecreamedcorn/peg_rs
[INFO] frobbed toml for thecreamedcorn/peg_rs written to work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/gh/thecreamedcorn/peg_rs/Cargo.toml
[INFO] started frobbing thecreamedcorn/peg_rs
[INFO] finished frobbing thecreamedcorn/peg_rs
[INFO] frobbed toml for thecreamedcorn/peg_rs written to work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/gh/thecreamedcorn/peg_rs/Cargo.toml
[INFO] crate thecreamedcorn/peg_rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking thecreamedcorn/peg_rs against try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a for pr-60261
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60261/worker-2/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/gh/thecreamedcorn/peg_rs:/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" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8a277b75e1e83ea11661fb50da13c13b41ea4e2c8837418c23e56725d5c9ad3d
[INFO] running `"docker" "start" "-a" "8a277b75e1e83ea11661fb50da13c13b41ea4e2c8837418c23e56725d5c9ad3d"`
[INFO] [stderr]     Checking peg_rs v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/choice.rs:22:38
[INFO] [stderr]    |
[INFO] [stderr] 22 |                 ParseResult::Success(mut parse_data) => return ParseResult::Success(parse_data),
[INFO] [stderr]    |                                      ----^^^^^^^^^^
[INFO] [stderr]    |                                      |
[INFO] [stderr]    |                                      help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num`
[INFO] [stderr]    --> src/peg_rs/grammar_nodes/char_class.rs:119:9
[INFO] [stderr]     |
[INFO] [stderr] 119 |     let num: Rc<RefCell<i64>> = Rc::new(RefCell::new(5));
[INFO] [stderr]     |         ^^^ help: consider prefixing with an underscore: `_num`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/peg_rs/grammar_nodes/choice.rs:22:38
[INFO] [stderr]    |
[INFO] [stderr] 22 |                 ParseResult::Success(mut parse_data) => return ParseResult::Success(parse_data),
[INFO] [stderr]    |                                      ----^^^^^^^^^^
[INFO] [stderr]    |                                      |
[INFO] [stderr]    |                                      help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "8a277b75e1e83ea11661fb50da13c13b41ea4e2c8837418c23e56725d5c9ad3d"`
[INFO] running `"docker" "rm" "-f" "8a277b75e1e83ea11661fb50da13c13b41ea4e2c8837418c23e56725d5c9ad3d"`
[INFO] [stdout] 8a277b75e1e83ea11661fb50da13c13b41ea4e2c8837418c23e56725d5c9ad3d