[INFO] updating cached repository https://github.com/crazymerlyn/kilo-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrazymerlyn%2Fkilo-rs" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/crazymerlyn/kilo-rs on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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 /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/crazymerlyn/kilo-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 503b288b52e5a9c577fa0cf263b932b2dcbd99908ae4e59afd2f5604a0f66879
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "503b288b52e5a9c577fa0cf263b932b2dcbd99908ae4e59afd2f5604a0f66879"`
[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/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/main.rs:281:60
[INFO] [stderr]     |
[INFO] [stderr] 281 |                     format!("Can't save! I/O error: {}", e.description())
[INFO] [stderr]     |                                                            ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[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] error[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] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0502`.
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/main.rs:281:60
[INFO] [stderr]     |
[INFO] [stderr] 281 |                     format!("Can't save! I/O error: {}", e.description())
[INFO] [stderr]     |                                                            ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `kilo`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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] error[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] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0502`.
[INFO] [stderr] error: could not compile `kilo`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "503b288b52e5a9c577fa0cf263b932b2dcbd99908ae4e59afd2f5604a0f66879"`
[INFO] running `"docker" "rm" "-f" "503b288b52e5a9c577fa0cf263b932b2dcbd99908ae4e59afd2f5604a0f66879"`
[INFO] [stdout] 503b288b52e5a9c577fa0cf263b932b2dcbd99908ae4e59afd2f5604a0f66879
