[INFO] cloning repository https://github.com/fky2015/brainfuck-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fky2015/brainfuck-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffky2015%2Fbrainfuck-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffky2015%2Fbrainfuck-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b644d4722f489fde38b9df4a8b59f472465c2fc
[INFO] checking fky2015/brainfuck-rs against master#b44e14f762fd4062faeba97f8f2bc470298ec1ac for pr-135331
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffky2015%2Fbrainfuck-rs" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fky2015/brainfuck-rs on toolchain b44e14f762fd4062faeba97f8f2bc470298ec1ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b44e14f762fd4062faeba97f8f2bc470298ec1ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fky2015/brainfuck-rs
[INFO] finished tweaking git repo https://github.com/fky2015/brainfuck-rs
[INFO] tweaked toml for git repo https://github.com/fky2015/brainfuck-rs written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/fky2015/brainfuck-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b44e14f762fd4062faeba97f8f2bc470298ec1ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+b44e14f762fd4062faeba97f8f2bc470298ec1ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b41f60a6d2e3623eb29d5da1f5bb34f944521dc167029fd281d91477f3e48826
[INFO] running `Command { std: "docker" "start" "-a" "b41f60a6d2e3623eb29d5da1f5bb34f944521dc167029fd281d91477f3e48826", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b41f60a6d2e3623eb29d5da1f5bb34f944521dc167029fd281d91477f3e48826", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b41f60a6d2e3623eb29d5da1f5bb34f944521dc167029fd281d91477f3e48826", kill_on_drop: false }`
[INFO] [stdout] b41f60a6d2e3623eb29d5da1f5bb34f944521dc167029fd281d91477f3e48826
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+b44e14f762fd4062faeba97f8f2bc470298ec1ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f93c96ad27adf304e5f392e2d9ef85647ede83654a29c61472b24126dd28256
[INFO] running `Command { std: "docker" "start" "-a" "5f93c96ad27adf304e5f392e2d9ef85647ede83654a29c61472b24126dd28256", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling semver v1.0.7
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.2
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking clap_lex v0.1.1
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]    Compiling rayon v1.5.2
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking pretty_assertions v1.2.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking clap v3.1.12
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking brainfuck-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `StdOut`
[INFO] [stdout]    --> src/lib.rs:195:31
[INFO] [stdout]     |
[INFO] [stdout] 195 |         io::{StdIn, StdInOut, StdOut},
[INFO] [stdout]     |                               ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StdIn`
[INFO] [stdout]    --> src/lib.rs:195:14
[INFO] [stdout]     |
[INFO] [stdout] 195 |         io::{StdIn, StdInOut, StdOut},
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_memory` is never used
[INFO] [stdout]    --> src/lib.rs:273:16
[INFO] [stdout]     |
[INFO] [stdout] 205 |     impl<'a> VirtualMachine<'a> {
[INFO] [stdout]     |     --------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 273 |         pub fn print_memory(&self) {
[INFO] [stdout]     |                ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_helper` is never used
[INFO] [stdout]    --> src/lib.rs:327:12
[INFO] [stdout]     |
[INFO] [stdout] 327 |     pub fn test_helper(source_code: &str, input: Option<&str>, output: Option<&str>) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `load_test_from_file` is never used
[INFO] [stdout]    --> src/lib.rs:344:12
[INFO] [stdout]     |
[INFO] [stdout] 344 |     pub fn load_test_from_file(file_name: &str) -> (String, Option<String>, Option<String>) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `push_input` are never used
[INFO] [stdout]    --> src/lib.rs:377:16
[INFO] [stdout]     |
[INFO] [stdout] 376 |     impl TestStdOut {
[INFO] [stdout]     |     --------------- associated items in this implementation
[INFO] [stdout] 377 |         pub fn new() -> Self {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 384 |         pub fn push_input(&mut self, input: &str) {
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stdout] warning: unused import: `black_box`
[INFO] [stdout]  --> benches/my_benchmark.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 | use criterion::{black_box, criterion_group, criterion_main, Criterion};
[INFO] [stdout]   |                 ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `assert_eq` and `assert_ne`
[INFO] [stdout]    --> src/lib.rs:408:29
[INFO] [stdout]     |
[INFO] [stdout] 408 |     use pretty_assertions::{assert_eq, assert_ne};
[INFO] [stdout]     |                             ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `input_clone` is never read
[INFO] [stdout]   --> benches/my_benchmark.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct NullIO {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 10 |     pub input: VecDeque<char>,
[INFO] [stdout] 11 |     input_clone: VecDeque<char>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `load_input` and `reload_input` are never used
[INFO] [stdout]   --> benches/my_benchmark.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl NullIO {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn load_input(&mut self, input: &str) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn reload_input(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StdOut`
[INFO] [stdout]    --> src/lib.rs:195:31
[INFO] [stdout]     |
[INFO] [stdout] 195 |         io::{StdIn, StdInOut, StdOut},
[INFO] [stdout]     |                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StdIn`
[INFO] [stdout]    --> src/lib.rs:195:14
[INFO] [stdout]     |
[INFO] [stdout] 195 |         io::{StdIn, StdInOut, StdOut},
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_memory` is never used
[INFO] [stdout]    --> src/lib.rs:273:16
[INFO] [stdout]     |
[INFO] [stdout] 205 |     impl<'a> VirtualMachine<'a> {
[INFO] [stdout]     |     --------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 273 |         pub fn print_memory(&self) {
[INFO] [stdout]     |                ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.55s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.5
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "5f93c96ad27adf304e5f392e2d9ef85647ede83654a29c61472b24126dd28256", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f93c96ad27adf304e5f392e2d9ef85647ede83654a29c61472b24126dd28256", kill_on_drop: false }`
[INFO] [stdout] 5f93c96ad27adf304e5f392e2d9ef85647ede83654a29c61472b24126dd28256