[INFO] updating cached repository https://github.com/crazymerlyn/kilo-rs [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 320b83097c84c25c45f702907d9fb7369e5579fa [INFO] checking crazymerlyn/kilo-rs against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398 [INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrazymerlyn%2Fkilo-rs" "work/builds/worker-2/source"` [INFO] [stderr] Cloning into 'work/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/crazymerlyn/kilo-rs on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt [INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/crazymerlyn/kilo-rs [INFO] finished tweaking git repo https://github.com/crazymerlyn/kilo-rs [INFO] tweaked toml for git repo https://github.com/crazymerlyn/kilo-rs written to work/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/crazymerlyn/kilo-rs already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 813df91f67f46164e8f5d6e968bd40debf313f900cb246e733152237a820374f [INFO] running `"docker" "start" "-a" "813df91f67f46164e8f5d6e968bd40debf313f900cb246e733152237a820374f"` [INFO] [stderr] Checking atty v0.1.2 [INFO] [stderr] Checking termsize v0.1.4 [INFO] [stderr] Checking kilo v0.1.0 (/opt/rustwide/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] = note: for more information, try `rustc --explain E0729` [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] = note: for more information, try `rustc --explain E0729` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.46s [INFO] running `"docker" "inspect" "813df91f67f46164e8f5d6e968bd40debf313f900cb246e733152237a820374f"` [INFO] running `"docker" "rm" "-f" "813df91f67f46164e8f5d6e968bd40debf313f900cb246e733152237a820374f"` [INFO] [stdout] 813df91f67f46164e8f5d6e968bd40debf313f900cb246e733152237a820374f