[INFO] cloning repository https://github.com/tentonlien/java-bytecode-parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tentonlien/java-bytecode-parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftentonlien%2Fjava-bytecode-parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftentonlien%2Fjava-bytecode-parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 489833d2c2b25edd1d01db6b85fe7e3225f01c23
[INFO] checking tentonlien/java-bytecode-parser/489833d2c2b25edd1d01db6b85fe7e3225f01c23 against master#12f35ad39ed3e39df4d953c46d4f6cc6c82adc96 for pr-155299
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftentonlien%2Fjava-bytecode-parser" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tentonlien/java-bytecode-parser
[INFO] finished tweaking git repo https://github.com/tentonlien/java-bytecode-parser
[INFO] tweaked toml for git repo https://github.com/tentonlien/java-bytecode-parser written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tentonlien/java-bytecode-parser on toolchain 12f35ad39ed3e39df4d953c46d4f6cc6c82adc96
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+12f35ad39ed3e39df4d953c46d4f6cc6c82adc96" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+12f35ad39ed3e39df4d953c46d4f6cc6c82adc96" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+12f35ad39ed3e39df4d953c46d4f6cc6c82adc96" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+12f35ad39ed3e39df4d953c46d4f6cc6c82adc96" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 74b8aea4743cfb0ccc7761a4985b125b900d05381e70185ae008e6f19ce30c2e
[INFO] running `Command { std: "docker" "start" "-a" "74b8aea4743cfb0ccc7761a4985b125b900d05381e70185ae008e6f19ce30c2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74b8aea4743cfb0ccc7761a4985b125b900d05381e70185ae008e6f19ce30c2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74b8aea4743cfb0ccc7761a4985b125b900d05381e70185ae008e6f19ce30c2e", kill_on_drop: false }`
[INFO] [stdout] 74b8aea4743cfb0ccc7761a4985b125b900d05381e70185ae008e6f19ce30c2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+12f35ad39ed3e39df4d953c46d4f6cc6c82adc96" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76f9ad969fb80186a82c35b19ed8bee527f59acd07cd24ac7676d804ba478338
[INFO] running `Command { std: "docker" "start" "-a" "76f9ad969fb80186a82c35b19ed8bee527f59acd07cd24ac7676d804ba478338", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]     Checking log v0.4.29
[INFO] [stderr]     Checking java-bytecode-parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `info`
[INFO] [stdout]  --> src/main.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log::{error, info, LevelFilter};
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]  --> src/class_loader/instruction_analyzer.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use log::{debug};
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `info`
[INFO] [stdout]  --> src/main.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log::{error, info, LevelFilter};
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]  --> src/class_loader/instruction_analyzer.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use log::{debug};
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_byte_code` is never used
[INFO] [stdout]   --> src/class_loader/mod.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl JavaClass {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn print_byte_code(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `tag` and `content` are never read
[INFO] [stdout]   --> src/class_loader/constant_pool_analyzer.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct ConstantItem {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] 27 |     tag: ConstantTag,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 28 |     content: String
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Instruction` is never used
[INFO] [stdout]  --> src/class_loader/instruction_analyzer.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum Instruction {
[INFO] [stdout]   |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MemoryModel` is never constructed
[INFO] [stdout]  --> src/vm_structure/mod.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct MemoryModel {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MethodArea` is never constructed
[INFO] [stdout]   --> src/vm_structure/mod.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct MethodArea {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Stack` is never constructed
[INFO] [stdout]   --> src/vm_structure/mod.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Stack {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NativeStack` is never constructed
[INFO] [stdout]   --> src/vm_structure/mod.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct NativeStack {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ProgramCounter` is never constructed
[INFO] [stdout]   --> src/vm_structure/mod.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct ProgramCounter {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Heap` is never constructed
[INFO] [stdout]   --> src/vm_structure/mod.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Heap {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     String::from("hello");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let _ = String::from("hello");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_byte_code` is never used
[INFO] [stdout]   --> src/class_loader/mod.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl JavaClass {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn print_byte_code(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `tag` and `content` are never read
[INFO] [stdout]   --> src/class_loader/constant_pool_analyzer.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct ConstantItem {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] 27 |     tag: ConstantTag,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 28 |     content: String
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Instruction` is never used
[INFO] [stdout]  --> src/class_loader/instruction_analyzer.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum Instruction {
[INFO] [stdout]   |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MemoryModel` is never constructed
[INFO] [stdout]  --> src/vm_structure/mod.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct MemoryModel {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MethodArea` is never constructed
[INFO] [stdout]   --> src/vm_structure/mod.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct MethodArea {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Stack` is never constructed
[INFO] [stdout]   --> src/vm_structure/mod.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Stack {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NativeStack` is never constructed
[INFO] [stdout]   --> src/vm_structure/mod.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct NativeStack {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ProgramCounter` is never constructed
[INFO] [stdout]   --> src/vm_structure/mod.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct ProgramCounter {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Heap` is never constructed
[INFO] [stdout]   --> src/vm_structure/mod.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Heap {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     String::from("hello");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let _ = String::from("hello");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.19s
[INFO] running `Command { std: "docker" "inspect" "76f9ad969fb80186a82c35b19ed8bee527f59acd07cd24ac7676d804ba478338", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76f9ad969fb80186a82c35b19ed8bee527f59acd07cd24ac7676d804ba478338", kill_on_drop: false }`
[INFO] [stdout] 76f9ad969fb80186a82c35b19ed8bee527f59acd07cd24ac7676d804ba478338