[INFO] updating cached repository crazymerlyn/kilo-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/crazymerlyn/kilo-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/crazymerlyn/kilo-rs" "work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/gh/crazymerlyn/kilo-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/gh/crazymerlyn/kilo-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/crazymerlyn/kilo-rs" "work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/gh/crazymerlyn/kilo-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/gh/crazymerlyn/kilo-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 320b83097c84c25c45f702907d9fb7369e5579fa
[INFO] sha for GitHub repo crazymerlyn/kilo-rs: 320b83097c84c25c45f702907d9fb7369e5579fa
[INFO] validating manifest of crazymerlyn/kilo-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 crazymerlyn/kilo-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 crazymerlyn/kilo-rs
[INFO] finished frobbing crazymerlyn/kilo-rs
[INFO] frobbed toml for crazymerlyn/kilo-rs written to work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/gh/crazymerlyn/kilo-rs/Cargo.toml
[INFO] started frobbing crazymerlyn/kilo-rs
[INFO] finished frobbing crazymerlyn/kilo-rs
[INFO] frobbed toml for crazymerlyn/kilo-rs written to work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/gh/crazymerlyn/kilo-rs/Cargo.toml
[INFO] crate crazymerlyn/kilo-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 crazymerlyn/kilo-rs against try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a for pr-60261
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60261/worker-1/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/gh/crazymerlyn/kilo-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] acf09e417108ded4cff234ac866c8988310ea722b6835fed7d7c9810dee6f4db
[INFO] running `"docker" "start" "-a" "acf09e417108ded4cff234ac866c8988310ea722b6835fed7d7c9810dee6f4db"`
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking atty v0.1.2
[INFO] [stderr]     Checking termsize v0.1.4
[INFO] [stderr]     Checking kilo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:518:13
[INFO] [stderr]     |
[INFO] [stderr] 518 |         let mut row = &mut self.rows[self.cy];
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:536:17
[INFO] [stderr]     |
[INFO] [stderr] 536 |             let mut row = &mut self.rows[self.cy];
[INFO] [stderr]     |                 ----^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning[E0502]: cannot borrow `self.rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]    --> src/main.rs:540:40
[INFO] [stderr]     |
[INFO] [stderr] 540 |             self.rows[self.cy - 1] += &self.rows[self.cy].clone();
[INFO] [stderr]     |             ---------------------------^^^^^^^^^-----------------
[INFO] [stderr]     |             |                          |
[INFO] [stderr]     |             |                          immutable borrow occurs here
[INFO] [stderr]     |             mutable borrow occurs here
[INFO] [stderr]     |             mutable borrow later used here
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:518:13
[INFO] [stderr]     |
[INFO] [stderr] 518 |         let mut row = &mut self.rows[self.cy];
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:536:17
[INFO] [stderr]     |
[INFO] [stderr] 536 |             let mut row = &mut self.rows[self.cy];
[INFO] [stderr]     |                 ----^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning[E0502]: cannot borrow `self.rows` as immutable because it is also borrowed as mutable
[INFO] [stderr]    --> src/main.rs:540:40
[INFO] [stderr]     |
[INFO] [stderr] 540 |             self.rows[self.cy - 1] += &self.rows[self.cy].clone();
[INFO] [stderr]     |             ---------------------------^^^^^^^^^-----------------
[INFO] [stderr]     |             |                          |
[INFO] [stderr]     |             |                          immutable borrow occurs here
[INFO] [stderr]     |             mutable borrow occurs here
[INFO] [stderr]     |             mutable borrow later used here
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.72s
[INFO] running `"docker" "inspect" "acf09e417108ded4cff234ac866c8988310ea722b6835fed7d7c9810dee6f4db"`
[INFO] running `"docker" "rm" "-f" "acf09e417108ded4cff234ac866c8988310ea722b6835fed7d7c9810dee6f4db"`
[INFO] [stdout] acf09e417108ded4cff234ac866c8988310ea722b6835fed7d7c9810dee6f4db