[INFO] cloning repository https://github.com/mindcarver/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/mindcarver/brainfuck-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmindcarver%2Fbrainfuck-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmindcarver%2Fbrainfuck-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e63cb339c3b0206414546532397f59a9354b33e4
[INFO] checking mindcarver/brainfuck-rs against try#d8a5ee01b913730aca7ab44c72c8f2722c0533ff for pr-139022
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmindcarver%2Fbrainfuck-rs" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mindcarver/brainfuck-rs on toolchain d8a5ee01b913730aca7ab44c72c8f2722c0533ff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mindcarver/brainfuck-rs
[INFO] finished tweaking git repo https://github.com/mindcarver/brainfuck-rs
[INFO] tweaked toml for git repo https://github.com/mindcarver/brainfuck-rs written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mindcarver/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" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking mindcarver/brainfuck-rs against try#d8a5ee01b913730aca7ab44c72c8f2722c0533ff for pr-139022
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmindcarver%2Fbrainfuck-rs" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mindcarver/brainfuck-rs on toolchain d8a5ee01b913730aca7ab44c72c8f2722c0533ff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mindcarver/brainfuck-rs
[INFO] finished tweaking git repo https://github.com/mindcarver/brainfuck-rs
[INFO] tweaked toml for git repo https://github.com/mindcarver/brainfuck-rs written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mindcarver/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" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9254e21bb62b28370e3b1952e6136e5086b23ade416fb0d2477a0843098dc94
[INFO] running `Command { std: "docker" "start" "-a" "d9254e21bb62b28370e3b1952e6136e5086b23ade416fb0d2477a0843098dc94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9254e21bb62b28370e3b1952e6136e5086b23ade416fb0d2477a0843098dc94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9254e21bb62b28370e3b1952e6136e5086b23ade416fb0d2477a0843098dc94", kill_on_drop: false }`
[INFO] [stdout] d9254e21bb62b28370e3b1952e6136e5086b23ade416fb0d2477a0843098dc94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6781f8644c2f5021b37a49d801bf9db0c03d252c5193b142f74cd0eaba3ac9b
[INFO] running `Command { std: "docker" "start" "-a" "c6781f8644c2f5021b37a49d801bf9db0c03d252c5193b142f74cd0eaba3ac9b", kill_on_drop: false }`
[INFO] [stderr]     Checking brainfuck-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Read`, `Write`, and `f32::consts::E`
[INFO] [stdout]  --> src/ir.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     f32::consts::E,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 5 |     io::{Read, Write},
[INFO] [stdout]   |          ^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/ir.rs:71:41
[INFO] [stdout]    |
[INFO] [stdout] 71 |                     instrs.push(IR::JIZ((0)));
[INFO] [stdout]    |                                         ^ ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 71 -                     instrs.push(IR::JIZ((0)));
[INFO] [stdout] 71 +                     instrs.push(IR::JIZ(0));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `Write`, and `f32::consts::E`
[INFO] [stdout]  --> src/ir.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     f32::consts::E,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 5 |     io::{Read, Write},
[INFO] [stdout]   |          ^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/ir.rs:71:41
[INFO] [stdout]    |
[INFO] [stdout] 71 |                     instrs.push(IR::JIZ((0)));
[INFO] [stdout]    |                                         ^ ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 71 -                     instrs.push(IR::JIZ((0)));
[INFO] [stdout] 71 +                     instrs.push(IR::JIZ(0));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Code` is never constructed
[INFO] [stdout]   --> src/opcode.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct Code {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]   --> src/opcode.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl Code {  
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 49 |     pub fn from(data: Vec<u8>) -> Result<Self, Box<dyn std::error::Error>> {  
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Code` is never constructed
[INFO] [stdout]   --> src/opcode.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct Code {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]   --> src/opcode.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl Code {  
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 49 |     pub fn from(data: Vec<u8>) -> Result<Self, Box<dyn std::error::Error>> {  
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "c6781f8644c2f5021b37a49d801bf9db0c03d252c5193b142f74cd0eaba3ac9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6781f8644c2f5021b37a49d801bf9db0c03d252c5193b142f74cd0eaba3ac9b", kill_on_drop: false }`
[INFO] [stdout] c6781f8644c2f5021b37a49d801bf9db0c03d252c5193b142f74cd0eaba3ac9b