[INFO] cloning repository https://github.com/Taylor-lagrange/jvm-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Taylor-lagrange/jvm-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTaylor-lagrange%2Fjvm-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTaylor-lagrange%2Fjvm-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 94242b3bce241a5533c9e01a13766d2d274906e0
[INFO] checking Taylor-lagrange/jvm-rs against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTaylor-lagrange%2Fjvm-rs" "/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/Taylor-lagrange/jvm-rs on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Taylor-lagrange/jvm-rs
[INFO] finished tweaking git repo https://github.com/Taylor-lagrange/jvm-rs
[INFO] tweaked toml for git repo https://github.com/Taylor-lagrange/jvm-rs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Taylor-lagrange/jvm-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stdout] 03c485f9a915ee5034f227c1cce113309e50885750d129a47cba0f327f7fc6fc
[INFO] running `Command { std: "docker" "start" "-a" "03c485f9a915ee5034f227c1cce113309e50885750d129a47cba0f327f7fc6fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03c485f9a915ee5034f227c1cce113309e50885750d129a47cba0f327f7fc6fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03c485f9a915ee5034f227c1cce113309e50885750d129a47cba0f327f7fc6fc", kill_on_drop: false }`
[INFO] [stdout] 03c485f9a915ee5034f227c1cce113309e50885750d129a47cba0f327f7fc6fc
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b42bddeae2d7720002ba1adb867eddebac8245b740f20f77e89f69dd418a37ee
[INFO] running `Command { std: "docker" "start" "-a" "b42bddeae2d7720002ba1adb867eddebac8245b740f20f77e89f69dd418a37ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking arc-swap v0.4.8
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking bzip2 v0.4.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking serde-value v0.6.0
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking zip v0.5.13
[INFO] [stderr]     Checking structopt v0.3.22
[INFO] [stderr]     Checking log4rs v0.10.0
[INFO] [stderr]     Checking jvm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `read_u64`
[INFO] [stdout]   --> src/classfile/class_reader.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 |   pub fn read_u64(&mut self) -> u64 {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `attributes`
[INFO] [stdout]   --> src/classfile/class_file.rs:19:3
[INFO] [stdout]    |
[INFO] [stdout] 19 |   attributes: Vec<AttributeInfo>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_name_and_type`
[INFO] [stdout]   --> src/classfile/constant_pool.rs:88:10
[INFO] [stdout]    |
[INFO] [stdout] 88 |   pub fn get_name_and_type(&self, index: usize) -> (&String, &String) {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `access_flags`
[INFO] [stdout]  --> src/classfile/member_info.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 |   access_flags: u16,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `descriptor_index`
[INFO] [stdout]  --> src/classfile/member_info.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 |   descriptor_index: u16,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `attributes`
[INFO] [stdout]  --> src/classfile/member_info.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   attributes: Vec<AttributeInfo>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Object`
[INFO] [stdout]  --> src/runtime/object.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Object {}
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Frame`
[INFO] [stdout]  --> src/runtime/thread.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Frame<'a> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/runtime/thread.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |   pub fn new(max_locals: usize, max_stack: usize) -> Frame<'a> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Stack`
[INFO] [stdout]   --> src/runtime/thread.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Stack<'a> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/runtime/thread.rs:25:10
[INFO] [stdout]    |
[INFO] [stdout] 25 |   pub fn new(max_size: usize) -> Stack<'a> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]   --> src/runtime/thread.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 |   pub fn push(&mut self, frame: Frame<'a>) {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/runtime/thread.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 |   pub fn pop(&mut self) -> Frame<'a> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `top`
[INFO] [stdout]   --> src/runtime/thread.rs:44:10
[INFO] [stdout]    |
[INFO] [stdout] 44 |   pub fn top(&mut self) -> &mut Frame<'a> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Thread`
[INFO] [stdout]   --> src/runtime/thread.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | struct Thread<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/runtime/thread.rs:59:10
[INFO] [stdout]    |
[INFO] [stdout] 59 |   pub fn new() -> Thread<'a> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Slot`
[INFO] [stdout]  --> src/runtime/operand_stack.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Slot<'a> {
[INFO] [stdout]   |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `OperandStack`
[INFO] [stdout]   --> src/runtime/operand_stack.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct OperandStack<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/runtime/operand_stack.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 |   pub fn new(max_stack: usize) -> OperandStack<'a> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_int`
[INFO] [stdout]   --> src/runtime/operand_stack.rs:22:6
[INFO] [stdout]    |
[INFO] [stdout] 22 |   fn push_int(&mut self, val: i32) {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop_int`
[INFO] [stdout]   --> src/runtime/operand_stack.rs:26:6
[INFO] [stdout]    |
[INFO] [stdout] 26 |   fn pop_int(&mut self) -> i32 {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_float`
[INFO] [stdout]   --> src/runtime/operand_stack.rs:34:6
[INFO] [stdout]    |
[INFO] [stdout] 34 |   fn push_float(&mut self, val: f32) {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop_float`
[INFO] [stdout]   --> src/runtime/operand_stack.rs:39:6
[INFO] [stdout]    |
[INFO] [stdout] 39 |   fn pop_float(&mut self) -> f32 {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_long`
[INFO] [stdout]   --> src/runtime/operand_stack.rs:48:6
[INFO] [stdout]    |
[INFO] [stdout] 48 |   fn push_long(&mut self, val: i64) {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop_long`
[INFO] [stdout]   --> src/runtime/operand_stack.rs:53:6
[INFO] [stdout]    |
[INFO] [stdout] 53 |   fn pop_long(&mut self) -> i64 {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_double`
[INFO] [stdout]   --> src/runtime/operand_stack.rs:69:6
[INFO] [stdout]    |
[INFO] [stdout] 69 |   fn push_double(&mut self, val: f64) {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop_double`
[INFO] [stdout]   --> src/runtime/operand_stack.rs:73:6
[INFO] [stdout]    |
[INFO] [stdout] 73 |   fn pop_double(&mut self) -> f64 {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_ref`
[INFO] [stdout]   --> src/runtime/operand_stack.rs:77:6
[INFO] [stdout]    |
[INFO] [stdout] 77 |   fn push_ref(&mut self, ref_object: &'a Object) {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop_ref`
[INFO] [stdout]   --> src/runtime/operand_stack.rs:81:6
[INFO] [stdout]    |
[INFO] [stdout] 81 |   fn pop_ref(&mut self) -> &Object {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LocalVars`
[INFO] [stdout]  --> src/runtime/local_vars.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct LocalVars<'a>(Vec<Slot<'a>>);
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/runtime/local_vars.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 |   pub fn new(max_locals: usize) -> LocalVars<'a> {
[INFO] [stdout]   |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_int`
[INFO] [stdout]   --> src/runtime/local_vars.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 |   pub fn set_int(&mut self, index: usize, val: i32) {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_int`
[INFO] [stdout]   --> src/runtime/local_vars.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 |   pub fn get_int(&mut self, index: usize) -> i32 {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_float`
[INFO] [stdout]   --> src/runtime/local_vars.rs:25:10
[INFO] [stdout]    |
[INFO] [stdout] 25 |   pub fn set_float(&mut self, index: usize, val: f32) {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_float`
[INFO] [stdout]   --> src/runtime/local_vars.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 |   fn get_float(&mut self, index: usize) -> f32 {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_long`
[INFO] [stdout]   --> src/runtime/local_vars.rs:36:6
[INFO] [stdout]    |
[INFO] [stdout] 36 |   fn set_long(&mut self, index: usize, val: i64) {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_long`
[INFO] [stdout]   --> src/runtime/local_vars.rs:40:6
[INFO] [stdout]    |
[INFO] [stdout] 40 |   fn get_long(&mut self, index: usize) -> i64 {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_double`
[INFO] [stdout]   --> src/runtime/local_vars.rs:55:6
[INFO] [stdout]    |
[INFO] [stdout] 55 |   fn set_double(&mut self, index: usize, val: f64) {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_double`
[INFO] [stdout]   --> src/runtime/local_vars.rs:59:6
[INFO] [stdout]    |
[INFO] [stdout] 59 |   fn get_double(&mut self, index: usize) -> f64 {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_ref`
[INFO] [stdout]   --> src/runtime/local_vars.rs:63:6
[INFO] [stdout]    |
[INFO] [stdout] 63 |   fn set_ref(&mut self, index: usize, ref_object: &'a Object) {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_ref`
[INFO] [stdout]   --> src/runtime/local_vars.rs:66:6
[INFO] [stdout]    |
[INFO] [stdout] 66 |   fn get_ref(&mut self, index: usize) -> &Object {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `elem`
[INFO] [stdout]  --> src/utils/list.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     elem: T,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/utils/list.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]   --> src/utils/list.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn push(&mut self, elem: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/utils/list.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn pop(&mut self) -> Option<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]   --> src/utils/list.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn peek(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_mut`
[INFO] [stdout]   --> src/utils/list.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn peek_mut(&mut self) -> Option<&mut T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 47 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_u64`
[INFO] [stdout]   --> src/classfile/class_reader.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 |   pub fn read_u64(&mut self) -> u64 {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `attributes`
[INFO] [stdout]   --> src/classfile/class_file.rs:19:3
[INFO] [stdout]    |
[INFO] [stdout] 19 |   attributes: Vec<AttributeInfo>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_name_and_type`
[INFO] [stdout]   --> src/classfile/constant_pool.rs:88:10
[INFO] [stdout]    |
[INFO] [stdout] 88 |   pub fn get_name_and_type(&self, index: usize) -> (&String, &String) {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `access_flags`
[INFO] [stdout]  --> src/classfile/member_info.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 |   access_flags: u16,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `descriptor_index`
[INFO] [stdout]  --> src/classfile/member_info.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 |   descriptor_index: u16,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `attributes`
[INFO] [stdout]  --> src/classfile/member_info.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   attributes: Vec<AttributeInfo>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Frame`
[INFO] [stdout]  --> src/runtime/thread.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Frame<'a> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/runtime/thread.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |   pub fn new(max_locals: usize, max_stack: usize) -> Frame<'a> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Stack`
[INFO] [stdout]   --> src/runtime/thread.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Stack<'a> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/runtime/thread.rs:25:10
[INFO] [stdout]    |
[INFO] [stdout] 25 |   pub fn new(max_size: usize) -> Stack<'a> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]   --> src/runtime/thread.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 |   pub fn push(&mut self, frame: Frame<'a>) {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/runtime/thread.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 |   pub fn pop(&mut self) -> Frame<'a> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `top`
[INFO] [stdout]   --> src/runtime/thread.rs:44:10
[INFO] [stdout]    |
[INFO] [stdout] 44 |   pub fn top(&mut self) -> &mut Frame<'a> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Thread`
[INFO] [stdout]   --> src/runtime/thread.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | struct Thread<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/runtime/thread.rs:59:10
[INFO] [stdout]    |
[INFO] [stdout] 59 |   pub fn new() -> Thread<'a> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RefObject`
[INFO] [stdout]  --> src/runtime/operand_stack.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 |   RefObject(&'a Object),
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_ref`
[INFO] [stdout]   --> src/runtime/operand_stack.rs:77:6
[INFO] [stdout]    |
[INFO] [stdout] 77 |   fn push_ref(&mut self, ref_object: &'a Object) {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop_ref`
[INFO] [stdout]   --> src/runtime/operand_stack.rs:81:6
[INFO] [stdout]    |
[INFO] [stdout] 81 |   fn pop_ref(&mut self) -> &Object {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_ref`
[INFO] [stdout]   --> src/runtime/local_vars.rs:63:6
[INFO] [stdout]    |
[INFO] [stdout] 63 |   fn set_ref(&mut self, index: usize, ref_object: &'a Object) {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_ref`
[INFO] [stdout]   --> src/runtime/local_vars.rs:66:6
[INFO] [stdout]    |
[INFO] [stdout] 66 |   fn get_ref(&mut self, index: usize) -> &Object {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.90s
[INFO] running `Command { std: "docker" "inspect" "b42bddeae2d7720002ba1adb867eddebac8245b740f20f77e89f69dd418a37ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b42bddeae2d7720002ba1adb867eddebac8245b740f20f77e89f69dd418a37ee", kill_on_drop: false }`
[INFO] [stdout] b42bddeae2d7720002ba1adb867eddebac8245b740f20f77e89f69dd418a37ee