[INFO] cloning repository https://github.com/themasch/rust-jvm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/themasch/rust-jvm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthemasch%2Frust-jvm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthemasch%2Frust-jvm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2d7418c568670d8bcc52ef7e64cc0704f9c34eb1
[INFO] checking themasch/rust-jvm against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthemasch%2Frust-jvm" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/themasch/rust-jvm on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/themasch/rust-jvm
[INFO] finished tweaking git repo https://github.com/themasch/rust-jvm
[INFO] tweaked toml for git repo https://github.com/themasch/rust-jvm written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/themasch/rust-jvm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nom v4.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2de999c19ca4feda5d18961b83404db992e61ad39f595ee106c02bd20f811bc1
[INFO] running `Command { std: "docker" "start" "-a" "2de999c19ca4feda5d18961b83404db992e61ad39f595ee106c02bd20f811bc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2de999c19ca4feda5d18961b83404db992e61ad39f595ee106c02bd20f811bc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2de999c19ca4feda5d18961b83404db992e61ad39f595ee106c02bd20f811bc1", kill_on_drop: false }`
[INFO] [stdout] 2de999c19ca4feda5d18961b83404db992e61ad39f595ee106c02bd20f811bc1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 275eb1f93184a73718e5146d2ef7e44b3c840eccd42fc653d41940e7ff335c73
[INFO] running `Command { std: "docker" "start" "-a" "275eb1f93184a73718e5146d2ef7e44b3c840eccd42fc653d41940e7ff335c73", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.40
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking cfg-if v0.1.4
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking backtrace-sys v0.1.23
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking nom v4.0.0
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking rjvm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `nom::IResult`
[INFO] [stdout]    --> src/java/class_file/mod.rs:112:5
[INFO] [stdout]     |
[INFO] [stdout] 112 | use nom::IResult;
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nom::*`
[INFO] [stdout]    --> src/java/class_file/parser.rs:326:9
[INFO] [stdout]     |
[INFO] [stdout] 326 |     use nom::*;
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::slice::Iter`
[INFO] [stdout]    --> src/java/class_file/mod.rs:113:5
[INFO] [stdout]     |
[INFO] [stdout] 113 | use std::slice::Iter;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nom::IResult`
[INFO] [stdout]    --> src/java/class_file/mod.rs:112:5
[INFO] [stdout]     |
[INFO] [stdout] 112 | use nom::IResult;
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::slice::Iter`
[INFO] [stdout]    --> src/java/class_file/mod.rs:113:5
[INFO] [stdout]     |
[INFO] [stdout] 113 | use std::slice::Iter;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/java/instructions.rs:18:25
[INFO] [stdout]     |
[INFO] [stdout] 18  |                   $name ( ( $($t),* ) )
[INFO] [stdout]     |                           ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] ...
[INFO] [stdout] 69  | / instruction!(
[INFO] [stdout] 70  | |     0x00 => (1): [ () ] => NOOP(),
[INFO] [stdout] 71  | |     0x01 => (1): [ () ] => AConstNull(),
[INFO] [stdout] 72  | |     0x02 => (1): [ () ] => IConstm1(),
[INFO] [stdout] ...   |
[INFO] [stdout] 274 | |     0xff => (1): [ () ] => ImpDep2()
[INFO] [stdout] 275 | | );
[INFO] [stdout]     | |__- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `instruction` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/java/instructions.rs:18:25
[INFO] [stdout]     |
[INFO] [stdout] 18  |                   $name ( ( $($t),* ) )
[INFO] [stdout]     |                           ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] ...
[INFO] [stdout] 69  | / instruction!(
[INFO] [stdout] 70  | |     0x00 => (1): [ () ] => NOOP(),
[INFO] [stdout] 71  | |     0x01 => (1): [ () ] => AConstNull(),
[INFO] [stdout] 72  | |     0x02 => (1): [ () ] => IConstm1(),
[INFO] [stdout] ...   |
[INFO] [stdout] 274 | |     0xff => (1): [ () ] => ImpDep2()
[INFO] [stdout] 275 | | );
[INFO] [stdout]     | |__- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `instruction` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/java/instructions.rs:18:25
[INFO] [stdout]     |
[INFO] [stdout] 18  |                   $name ( ( $($t),* ) )
[INFO] [stdout]     |                           ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] ...
[INFO] [stdout] 69  | / instruction!(
[INFO] [stdout] 70  | |     0x00 => (1): [ () ] => NOOP(),
[INFO] [stdout] 71  | |     0x01 => (1): [ () ] => AConstNull(),
[INFO] [stdout] 72  | |     0x02 => (1): [ () ] => IConstm1(),
[INFO] [stdout] ...   |
[INFO] [stdout] 274 | |     0xff => (1): [ () ] => ImpDep2()
[INFO] [stdout] 275 | | );
[INFO] [stdout]     | |__- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `instruction` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/java/instructions.rs:18:25
[INFO] [stdout]     |
[INFO] [stdout] 18  |                   $name ( ( $($t),* ) )
[INFO] [stdout]     |                           ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] ...
[INFO] [stdout] 69  | / instruction!(
[INFO] [stdout] 70  | |     0x00 => (1): [ () ] => NOOP(),
[INFO] [stdout] 71  | |     0x01 => (1): [ () ] => AConstNull(),
[INFO] [stdout] 72  | |     0x02 => (1): [ () ] => IConstm1(),
[INFO] [stdout] ...   |
[INFO] [stdout] 274 | |     0xff => (1): [ () ] => ImpDep2()
[INFO] [stdout] 275 | | );
[INFO] [stdout]     | |__- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `instruction` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `java::class_file::ClassFile`
[INFO] [stdout]    --> src/java/runtime/mod.rs:456:9
[INFO] [stdout]     |
[INFO] [stdout] 456 |     use java::class_file::ClassFile;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `java::class_file::Attribute`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use java::class_file::Attribute;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `java::class_file::CodeBlock`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use java::class_file::CodeBlock;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `java::class_file::Method`
[INFO] [stdout]    --> src/java/runtime/mod.rs:457:9
[INFO] [stdout]     |
[INFO] [stdout] 457 |     use java::class_file::Method;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `java::class_file::Attribute`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use java::class_file::Attribute;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `java::class_file::CodeBlock`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use java::class_file::CodeBlock;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable call
[INFO] [stdout]   --> src/java/class_file/parser.rs:38:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | /     loop {
[INFO] [stdout] 27 | |         if input[0] == b')' {
[INFO] [stdout] 28 | |             return Ok((&input[1..], vec));
[INFO] [stdout] 29 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 37 | |         }
[INFO] [stdout] 38 | |     }.clone()
[INFO] [stdout]    | |     - ^^^^^ unreachable call
[INFO] [stdout]    | |_____|
[INFO] [stdout]    |       any code following this expression is unreachable
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable call
[INFO] [stdout]   --> src/java/class_file/parser.rs:38:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | /     loop {
[INFO] [stdout] 27 | |         if input[0] == b')' {
[INFO] [stdout] 28 | |             return Ok((&input[1..], vec));
[INFO] [stdout] 29 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 37 | |         }
[INFO] [stdout] 38 | |     }.clone()
[INFO] [stdout]    | |     - ^^^^^ unreachable call
[INFO] [stdout]    | |_____|
[INFO] [stdout]    |       any code following this expression is unreachable
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rem`
[INFO] [stdout]    --> src/java/class_file/mod.rs:121:17
[INFO] [stdout]     |
[INFO] [stdout] 121 |             Ok((rem, (args, ret))) => Ok(MethodDescriptor { arguments: args, return_type: ret }),
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_rem`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exception_table`
[INFO] [stdout]    --> src/java/class_file/parser.rs:181:21
[INFO] [stdout]     |
[INFO] [stdout] 181 |                     exception_table: length_count!( be_u16, exception_table ) >>
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_exception_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `length`
[INFO] [stdout]    --> src/java/class_file/parser.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |         length: be_u32 >>
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_length`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/java/runtime/mod.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         for i in 0..size {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg_type`
[INFO] [stdout]    --> src/java/runtime/mod.rs:347:89
[INFO] [stdout]     |
[INFO] [stdout] 347 | ...                   let mut args = method.get_signature().arguments.iter().map(|arg_type| {
[INFO] [stdout]     |                                                                                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arg_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/java/runtime/mod.rs:290:40
[INFO] [stdout]     |
[INFO] [stdout] 290 |             Instruction::IInc((offset, value)) => match stack_frame.get_variable_mut(usize::from(*offset)) {
[INFO] [stdout]     |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `return_value`
[INFO] [stdout]    --> src/java/runtime/mod.rs:390:17
[INFO] [stdout]     |
[INFO] [stdout] 390 |         let mut return_value: Option<StackValue> = None;
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_return_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rem`
[INFO] [stdout]    --> src/java/class_file/mod.rs:121:17
[INFO] [stdout]     |
[INFO] [stdout] 121 |             Ok((rem, (args, ret))) => Ok(MethodDescriptor { arguments: args, return_type: ret }),
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_rem`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exception_table`
[INFO] [stdout]    --> src/java/class_file/parser.rs:181:21
[INFO] [stdout]     |
[INFO] [stdout] 181 |                     exception_table: length_count!( be_u16, exception_table ) >>
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_exception_table`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `length`
[INFO] [stdout]    --> src/java/class_file/parser.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |         length: be_u32 >>
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_length`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> src/java/class_file/parser.rs:342:13
[INFO] [stdout]     |
[INFO] [stdout] 342 |         let input = b"()V";
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/java/runtime/mod.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         for i in 0..size {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg_type`
[INFO] [stdout]    --> src/java/runtime/mod.rs:347:89
[INFO] [stdout]     |
[INFO] [stdout] 347 | ...                   let mut args = method.get_signature().arguments.iter().map(|arg_type| {
[INFO] [stdout]     |                                                                                   ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arg_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/java/runtime/mod.rs:290:40
[INFO] [stdout]     |
[INFO] [stdout] 290 |             Instruction::IInc((offset, value)) => match stack_frame.get_variable_mut(usize::from(*offset)) {
[INFO] [stdout]     |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `return_value`
[INFO] [stdout]    --> src/java/runtime/mod.rs:390:17
[INFO] [stdout]     |
[INFO] [stdout] 390 |         let mut return_value: Option<StackValue> = None;
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_return_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/java/runtime/mod.rs:390:13
[INFO] [stdout]     |
[INFO] [stdout] 390 |         let mut return_value: Option<StackValue> = None;
[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: function is never used: `disassemble`
[INFO] [stdout]  --> src/java/class_file/dissasm.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn disassemble<'a>(method: &Method<'a>) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Public`
[INFO] [stdout]   --> src/java/class_file/mod.rs:87:5
[INFO] [stdout]    |
[INFO] [stdout] 87 |     Public,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Private`
[INFO] [stdout]   --> src/java/class_file/mod.rs:88:5
[INFO] [stdout]    |
[INFO] [stdout] 88 |     Private,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Protected`
[INFO] [stdout]   --> src/java/class_file/mod.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 89 |     Protected,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Static`
[INFO] [stdout]   --> src/java/class_file/mod.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 90 |     Static,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Final`
[INFO] [stdout]   --> src/java/class_file/mod.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 |     Final,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Synchronized`
[INFO] [stdout]   --> src/java/class_file/mod.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 |     Synchronized,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Native`
[INFO] [stdout]   --> src/java/class_file/mod.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 93 |     Native,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Abstract`
[INFO] [stdout]   --> src/java/class_file/mod.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 94 |     Abstract,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Strict`
[INFO] [stdout]   --> src/java/class_file/mod.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 95 |     Strict,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_access`
[INFO] [stdout]    --> src/java/class_file/mod.rs:215:12
[INFO] [stdout]     |
[INFO] [stdout] 215 |     pub fn get_access(&self) -> HashSet<MethodAccess> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_line_numbers`
[INFO] [stdout]    --> src/java/class_file/mod.rs:260:12
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn get_line_numbers(&self) -> Vec<usize> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `None`
[INFO] [stdout]   --> src/java/runtime/mod.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     None,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Null`
[INFO] [stdout]   --> src/java/runtime/mod.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     Null,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `GotoAbsolute`
[INFO] [stdout]    --> src/java/runtime/mod.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     GotoAbsolute(usize),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `classpath`
[INFO] [stdout]    --> src/java/runtime/mod.rs:129:5
[INFO] [stdout]     |
[INFO] [stdout] 129 |     classpath: Vec<PathBuf>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/java/runtime/mod.rs:390:13
[INFO] [stdout]     |
[INFO] [stdout] 390 |         let mut return_value: Option<StackValue> = None;
[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: unused `Result` that must be used
[INFO] [stdout]    --> src/java/runtime/mod.rs:423:21
[INFO] [stdout]     |
[INFO] [stdout] 423 |                     self.check_return_type(method.get_signature().return_type, &return_value);
[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: 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `StackValue` in public interface (error E0446)
[INFO] [stdout]    --> src/java/runtime/mod.rs:199:5
[INFO] [stdout]     |
[INFO] [stdout] 199 |     pub fn exec_method_on_main(&mut self, method_name: &str) -> Result<Option<StackValue>, RuntimeError> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(private_in_public)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DEMOCLASS`
[INFO] [stdout]    --> src/java/class_file/parser.rs:287:5
[INFO] [stdout]     |
[INFO] [stdout] 287 |     const DEMOCLASS: &'static [u8] = include_bytes!("../../../sample/DemoClass.class");
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `disassemble`
[INFO] [stdout]  --> src/java/class_file/dissasm.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn disassemble<'a>(method: &Method<'a>) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Public`
[INFO] [stdout]   --> src/java/class_file/mod.rs:87:5
[INFO] [stdout]    |
[INFO] [stdout] 87 |     Public,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Private`
[INFO] [stdout]   --> src/java/class_file/mod.rs:88:5
[INFO] [stdout]    |
[INFO] [stdout] 88 |     Private,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Protected`
[INFO] [stdout]   --> src/java/class_file/mod.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 89 |     Protected,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Static`
[INFO] [stdout]   --> src/java/class_file/mod.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 90 |     Static,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Final`
[INFO] [stdout]   --> src/java/class_file/mod.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 |     Final,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Synchronized`
[INFO] [stdout]   --> src/java/class_file/mod.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 |     Synchronized,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Native`
[INFO] [stdout]   --> src/java/class_file/mod.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 93 |     Native,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Abstract`
[INFO] [stdout]   --> src/java/class_file/mod.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 94 |     Abstract,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Strict`
[INFO] [stdout]   --> src/java/class_file/mod.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 95 |     Strict,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_access`
[INFO] [stdout]    --> src/java/class_file/mod.rs:215:12
[INFO] [stdout]     |
[INFO] [stdout] 215 |     pub fn get_access(&self) -> HashSet<MethodAccess> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_line_numbers`
[INFO] [stdout]    --> src/java/class_file/mod.rs:260:12
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn get_line_numbers(&self) -> Vec<usize> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `None`
[INFO] [stdout]   --> src/java/runtime/mod.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     None,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Null`
[INFO] [stdout]   --> src/java/runtime/mod.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     Null,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `GotoAbsolute`
[INFO] [stdout]    --> src/java/runtime/mod.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     GotoAbsolute(usize),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `classpath`
[INFO] [stdout]    --> src/java/runtime/mod.rs:129:5
[INFO] [stdout]     |
[INFO] [stdout] 129 |     classpath: Vec<PathBuf>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/java/runtime/mod.rs:423:21
[INFO] [stdout]     |
[INFO] [stdout] 423 |                     self.check_return_type(method.get_signature().return_type, &return_value);
[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: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.00s
[INFO] running `Command { std: "docker" "inspect" "275eb1f93184a73718e5146d2ef7e44b3c840eccd42fc653d41940e7ff335c73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "275eb1f93184a73718e5146d2ef7e44b3c840eccd42fc653d41940e7ff335c73", kill_on_drop: false }`
[INFO] [stdout] 275eb1f93184a73718e5146d2ef7e44b3c840eccd42fc653d41940e7ff335c73