[INFO] cloning repository https://github.com/joeyhops/kitkat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/joeyhops/kitkat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoeyhops%2Fkitkat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoeyhops%2Fkitkat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a39e4fab987a055866d81627e5d876026e8f9b49
[INFO] checking joeyhops/kitkat against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoeyhops%2Fkitkat" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/joeyhops/kitkat on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/joeyhops/kitkat
[INFO] finished tweaking git repo https://github.com/joeyhops/kitkat
[INFO] tweaked toml for git repo https://github.com/joeyhops/kitkat written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/joeyhops/kitkat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a773ae1d2a6f1da537e76d8d3548c0b6cc51a4e1bf301fb9e682e667fb180c4e
[INFO] running `Command { std: "docker" "start" "-a" "a773ae1d2a6f1da537e76d8d3548c0b6cc51a4e1bf301fb9e682e667fb180c4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a773ae1d2a6f1da537e76d8d3548c0b6cc51a4e1bf301fb9e682e667fb180c4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a773ae1d2a6f1da537e76d8d3548c0b6cc51a4e1bf301fb9e682e667fb180c4e", kill_on_drop: false }`
[INFO] [stdout] a773ae1d2a6f1da537e76d8d3548c0b6cc51a4e1bf301fb9e682e667fb180c4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c977f25396d4848890777748c91f13781f7d415e6f67e8dc76e56f9779eb6ff1
[INFO] running `Command { std: "docker" "start" "-a" "c977f25396d4848890777748c91f13781f7d415e6f67e8dc76e56f9779eb6ff1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking termion v1.5.3
[INFO] [stderr]     Checking kitkat v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]    --> src/editor.rs:108:13
[INFO] [stdout]     |
[INFO] [stdout] 108 |         let size = self.terminal.size();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/editor.rs:170:12
[INFO] [stdout]     |
[INFO] [stdout] 170 |     panic!(e);
[INFO] [stdout]     |            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 170 |     panic!("{}", e);
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 170 |     std::panic::panic_any(e);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]    --> src/editor.rs:108:13
[INFO] [stdout]     |
[INFO] [stdout] 108 |         let size = self.terminal.size();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/editor.rs:170:12
[INFO] [stdout]     |
[INFO] [stdout] 170 |     panic!(e);
[INFO] [stdout]     |            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 170 |     panic!("{}", e);
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 170 |     std::panic::panic_any(e);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.81s
[INFO] running `Command { std: "docker" "inspect" "c977f25396d4848890777748c91f13781f7d415e6f67e8dc76e56f9779eb6ff1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c977f25396d4848890777748c91f13781f7d415e6f67e8dc76e56f9779eb6ff1", kill_on_drop: false }`
[INFO] [stdout] c977f25396d4848890777748c91f13781f7d415e6f67e8dc76e56f9779eb6ff1