[INFO] cloning repository https://github.com/Jupp56/brainfuck_interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jupp56/brainfuck_interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJupp56%2Fbrainfuck_interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJupp56%2Fbrainfuck_interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2af0320b5e6fb8b4481f83b80e0b0fa905364ff0
[INFO] checking Jupp56/brainfuck_interpreter against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJupp56%2Fbrainfuck_interpreter" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jupp56/brainfuck_interpreter on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jupp56/brainfuck_interpreter
[INFO] finished tweaking git repo https://github.com/Jupp56/brainfuck_interpreter
[INFO] tweaked toml for git repo https://github.com/Jupp56/brainfuck_interpreter written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Jupp56/brainfuck_interpreter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aeccdfe442fcf46f27654cc839a84214e7a89724ef39f83f640d0d14814db343
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "aeccdfe442fcf46f27654cc839a84214e7a89724ef39f83f640d0d14814db343", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aeccdfe442fcf46f27654cc839a84214e7a89724ef39f83f640d0d14814db343", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aeccdfe442fcf46f27654cc839a84214e7a89724ef39f83f640d0d14814db343", kill_on_drop: false }`
[INFO] [stdout] aeccdfe442fcf46f27654cc839a84214e7a89724ef39f83f640d0d14814db343
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 564a5581b8d294f7d291982c371a0c00b40dbfa7453702a379fa0b673372d7f6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "564a5581b8d294f7d291982c371a0c00b40dbfa7453702a379fa0b673372d7f6", kill_on_drop: false }`
[INFO] [stderr]     Checking brainfuck_interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/bin/main.rs:21:34
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 Err(e) => 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] 21 |                 Err(e) => panic!("{}", e),
[INFO] [stdout]    |                                  ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 Err(e) => std::panic::panic_any(e),
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/bin/main.rs:28:24
[INFO] [stdout]    |
[INFO] [stdout] 28 |                   panic!(format!(
[INFO] [stdout]    |  ________________________^
[INFO] [stdout] 29 | |                     "Parse error at index {}: no matching bracket found!",
[INFO] [stdout] 30 | |                     index
[INFO] [stdout] 31 | |                 ));
[INFO] [stdout]    | |_________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 panic!(
[INFO] [stdout] 29 |                     "Parse error at index {}: no matching bracket found!",
[INFO] [stdout] 30 |                     index
[INFO] [stdout] 31 |                 );
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/bin/main.rs:21:34
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 Err(e) => 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] 21 |                 Err(e) => panic!("{}", e),
[INFO] [stdout]    |                                  ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 Err(e) => std::panic::panic_any(e),
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/bin/main.rs:28:24
[INFO] [stdout]    |
[INFO] [stdout] 28 |                   panic!(format!(
[INFO] [stdout]    |  ________________________^
[INFO] [stdout] 29 | |                     "Parse error at index {}: no matching bracket found!",
[INFO] [stdout] 30 | |                     index
[INFO] [stdout] 31 | |                 ));
[INFO] [stdout]    | |_________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 panic!(
[INFO] [stdout] 29 |                     "Parse error at index {}: no matching bracket found!",
[INFO] [stdout] 30 |                     index
[INFO] [stdout] 31 |                 );
[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 0.75s
[INFO] running `Command { std: "docker" "inspect" "564a5581b8d294f7d291982c371a0c00b40dbfa7453702a379fa0b673372d7f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "564a5581b8d294f7d291982c371a0c00b40dbfa7453702a379fa0b673372d7f6", kill_on_drop: false }`
[INFO] [stdout] 564a5581b8d294f7d291982c371a0c00b40dbfa7453702a379fa0b673372d7f6