[INFO] cloning repository https://github.com/Songbird0/my-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/Songbird0/my-brainfuck-interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSongbird0%2Fmy-brainfuck-interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSongbird0%2Fmy-brainfuck-interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7845f76437d8df097fcdd1caa345ac6a90044634
[INFO] checking Songbird0/my-brainfuck-interpreter against beta-2020-07-24 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSongbird0%2Fmy-brainfuck-interpreter" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Songbird0/my-brainfuck-interpreter on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Songbird0/my-brainfuck-interpreter
[INFO] finished tweaking git repo https://github.com/Songbird0/my-brainfuck-interpreter
[INFO] tweaked toml for git repo https://github.com/Songbird0/my-brainfuck-interpreter written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Songbird0/my-brainfuck-interpreter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "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] c79da3677f99ca49fd186b3f919923127c4cb129233f533e23b185621de09179
[INFO] running `Command { std: "docker" "start" "-a" "c79da3677f99ca49fd186b3f919923127c4cb129233f533e23b185621de09179", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c79da3677f99ca49fd186b3f919923127c4cb129233f533e23b185621de09179", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c79da3677f99ca49fd186b3f919923127c4cb129233f533e23b185621de09179", kill_on_drop: false }`
[INFO] [stdout] c79da3677f99ca49fd186b3f919923127c4cb129233f533e23b185621de09179
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "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] 8920f45fc379007008ba6d93dbf901ab0ac7688618996900b5a60dffa2e32f0e
[INFO] running `Command { std: "docker" "start" "-a" "8920f45fc379007008ba6d93dbf901ab0ac7688618996900b5a60dffa2e32f0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]     Checking brainfuck_interpreter v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/parser/io.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{self, Read};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::parser::ram`
[INFO] [stdout]  --> src/parser/program.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::parser::ram;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/parser/io.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{self, Read};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Debug`
[INFO] [stdout]  --> src/parser/ast.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{self, Debug};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `program_ptr`
[INFO] [stdout]   --> src/parser/program.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 let program_ptr: &usize = &interpreter.program_ptr;
[INFO] [stdout]    |                     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_program_ptr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/parser/ast.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         self.ram[..].fmt(f);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/parser/ast.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         self.program.fmt(f);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Debug`
[INFO] [stdout]  --> src/parser/ast.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{self, Debug};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `program_ptr`
[INFO] [stdout]   --> src/parser/program.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 let program_ptr: &usize = &interpreter.program_ptr;
[INFO] [stdout]    |                     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_program_ptr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser/ram.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut interpreter = ast::Interpreter {
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser/ram.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut interpreter = right(interpreter);
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser/ram.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let mut interpreter = ast::Interpreter {
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser/ram.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let mut interpreter = ast::Interpreter {
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser/ram.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let mut interpreter = right(interpreter);
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser/ram.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let mut interpreter = left(interpreter);
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser/ram.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mut interpreter = ast::Interpreter {
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser/ram.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |     let mut interpreter = increment(interpreter);
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser/ram.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |     let mut interpreter = ast::Interpreter {
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser/ram.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let mut interpreter = decrement(interpreter);
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser/program.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let mut interpreter = ast::Interpreter {
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser/program.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let mut interpreter = loop_beginning(interpreter);
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser/program.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |     let mut interpreter = ast::Interpreter {
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser/program.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mut interpreter = loop_beginning(interpreter);
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser/program.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |     let mut interpreter = ast::Interpreter {
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser/program.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let mut interpreter = loop_beginning(interpreter);
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser/program.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |     let mut interpreter = loop_beginning(interpreter);
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser/program.rs:168:9
[INFO] [stdout]     |
[INFO] [stdout] 168 |     let mut interpreter = loop_ending(interpreter);
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser/program.rs:172:9
[INFO] [stdout]     |
[INFO] [stdout] 172 |     let mut interpreter = loop_ending(interpreter);
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/parser/ast.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         self.ram[..].fmt(f);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/parser/ast.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         self.program.fmt(f);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 25 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> tests/helloworld.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.17s
[INFO] running `Command { std: "docker" "inspect" "8920f45fc379007008ba6d93dbf901ab0ac7688618996900b5a60dffa2e32f0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8920f45fc379007008ba6d93dbf901ab0ac7688618996900b5a60dffa2e32f0e", kill_on_drop: false }`
[INFO] [stdout] 8920f45fc379007008ba6d93dbf901ab0ac7688618996900b5a60dffa2e32f0e
