[INFO] cloning repository https://github.com/Birbe/jvm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Birbe/jvm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBirbe%2Fjvm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBirbe%2Fjvm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2b5c1a737e4d7cece8b1f6ea1902b1184438f0d7
[INFO] testing Birbe/jvm against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBirbe%2Fjvm" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Birbe/jvm on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Birbe/jvm
[INFO] finished tweaking git repo https://github.com/Birbe/jvm
[INFO] tweaked toml for git repo https://github.com/Birbe/jvm written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3db414e873338c18185a67e5268e656412c5c43f84dc4c02350168927865737
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e3db414e873338c18185a67e5268e656412c5c43f84dc4c02350168927865737", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3db414e873338c18185a67e5268e656412c5c43f84dc4c02350168927865737", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3db414e873338c18185a67e5268e656412c5c43f84dc4c02350168927865737", kill_on_drop: false }`
[INFO] [stdout] e3db414e873338c18185a67e5268e656412c5c43f84dc4c02350168927865737
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b675322cdd7f53479ffa4f790679c07dfe85b2c0e264e52b3c87ae6e4b4e4b8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6b675322cdd7f53479ffa4f790679c07dfe85b2c0e264e52b3c87ae6e4b4e4b8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling target-lexicon v0.12.2
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling wasmparser v0.77.0
[INFO] [stderr]    Compiling zstd-safe v3.0.1+zstd.1.4.9
[INFO] [stderr]    Compiling wasmtime-cache v0.26.1
[INFO] [stderr]    Compiling cpp_demangle v0.3.3
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling bimap v0.6.1
[INFO] [stderr]    Compiling id-arena v2.2.1
[INFO] [stderr]    Compiling cassowary v0.3.0
[INFO] [stderr]    Compiling wast v38.0.0
[INFO] [stderr]    Compiling region v2.2.0
[INFO] [stderr]    Compiling directories-next v2.0.0
[INFO] [stderr]    Compiling wasmtime-fiber v0.26.1
[INFO] [stderr]    Compiling zstd-sys v1.4.20+zstd.1.4.9
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling wasmtime-runtime v0.26.1
[INFO] [stderr]    Compiling scroll_derive v0.10.5
[INFO] [stderr]    Compiling psm v0.1.16
[INFO] [stderr]    Compiling walrus-macro v0.18.0
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling termion v1.5.6
[INFO] [stderr]    Compiling file-per-thread-logger v0.1.4
[INFO] [stderr]    Compiling cranelift-entity v0.73.1
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.73.1
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling regalloc v0.0.31
[INFO] [stderr]    Compiling jvm v0.1.0 (/opt/rustwide/workdir/jvm)
[INFO] [stderr]    Compiling tui v0.15.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.73.1
[INFO] [stderr]    Compiling cranelift-bforest v0.73.1
[INFO] [stderr]    Compiling gimli v0.23.0
[INFO] [stdout] warning: unused import: `ConstantPool`
[INFO] [stdout]  --> jvm/src/thread.rs:4:78
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::class::{Method, Class, ClassError, MethodDescriptor, AccessFlags, ConstantPool};
[INFO] [stdout]   |                                                                              ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling object v0.23.0
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> jvm/src/linker/loader.rs:328:9
[INFO] [stdout]     |
[INFO] [stdout] 322 |             return self.does_interface_implement_interface(t_class, s_class)
[INFO] [stdout]     |             ---------------------------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 328 |         false
[INFO] [stdout]     |         ^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> jvm/src/heap.rs:32:16
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn new(size: usize) -> Self {
[INFO] [stdout]    |                ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling scroll v0.10.2
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> jvm/src/thread.rs:654:46
[INFO] [stdout]     |
[INFO] [stdout] 654 | ...                   let result = unsafe {
[INFO] [stdout]     |                                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> jvm/src/thread.rs:666:46
[INFO] [stdout]     |
[INFO] [stdout] 666 | ...                   let result = unsafe {
[INFO] [stdout]     |                                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> jvm/src/thread.rs:678:46
[INFO] [stdout]     |
[INFO] [stdout] 678 | ...                   let result = unsafe {
[INFO] [stdout]     |                                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> jvm/src/thread.rs:690:46
[INFO] [stdout]     |
[INFO] [stdout] 690 | ...                   let result = unsafe {
[INFO] [stdout]     |                                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> jvm/src/thread.rs:702:46
[INFO] [stdout]     |
[INFO] [stdout] 702 | ...                   let result = unsafe {
[INFO] [stdout]     |                                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> jvm/src/thread.rs:714:46
[INFO] [stdout]     |
[INFO] [stdout] 714 | ...                   let result = unsafe {
[INFO] [stdout]     |                                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> jvm/src/thread.rs:727:46
[INFO] [stdout]     |
[INFO] [stdout] 727 | ...                   let result = unsafe {
[INFO] [stdout]     |                                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> jvm/src/thread.rs:739:46
[INFO] [stdout]     |
[INFO] [stdout] 739 | ...                   let result = unsafe {
[INFO] [stdout]     |                                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> jvm/src/thread.rs:752:42
[INFO] [stdout]     |
[INFO] [stdout] 752 | ...                   let result = unsafe {
[INFO] [stdout]     |                                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> jvm/src/thread.rs:764:42
[INFO] [stdout]     |
[INFO] [stdout] 764 | ...                   let result = unsafe {
[INFO] [stdout]     |                                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> jvm/src/thread.rs:794:21
[INFO] [stdout]     |
[INFO] [stdout] 794 |                     unsafe {
[INFO] [stdout]     |                     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `load_link_field_descriptor`
[INFO] [stdout]   --> jvm/src/linker/loader.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn load_link_field_descriptor(&mut self, fd: &FieldDescriptor) -> Result<Option<ClassLoadReport>, JvmError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `thread_name`
[INFO] [stdout]    --> jvm/src/thread.rs:135:5
[INFO] [stdout]     |
[INFO] [stdout] 135 |     thread_name: String,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `contains_key`
[INFO] [stdout]    --> jvm/src/lib.rs:281:8
[INFO] [stdout]     |
[INFO] [stdout] 281 |     fn contains_key(&self, key: u16) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> jvm/src/class.rs:800:33
[INFO] [stdout]     |
[INFO] [stdout] 800 | ...                   rdr.read_exact(&mut bytes[..]);
[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 return value of `bitflags::core::num::<impl u16>::wrapping_add` that must be used
[INFO] [stdout]    --> jvm/src/thread.rs:582:21
[INFO] [stdout]     |
[INFO] [stdout] 582 |                     frame.pc.wrapping_add(*branch as u16);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this returns the result of the operation, without modifying the original
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `bitflags::core::num::<impl u16>::wrapping_add` that must be used
[INFO] [stdout]    --> jvm/src/thread.rs:603:21
[INFO] [stdout]     |
[INFO] [stdout] 603 |                     frame.pc.wrapping_add(*branch as u16);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this returns the result of the operation, without modifying the original
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `bitflags::core::num::<impl u16>::wrapping_add` that must be used
[INFO] [stdout]    --> jvm/src/thread.rs:607:17
[INFO] [stdout]     |
[INFO] [stdout] 607 |                 frame.pc.wrapping_add(*index as u16);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this returns the result of the operation, without modifying the original
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling walrus v0.18.0
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wast`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name wast --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wast-38.0.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="wasm-module"' -C metadata=421ac46986627bf1 -C extra-filename=-421ac46986627bf1 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern leb128=/opt/rustwide/target/debug/deps/libleb128-11fe3a9ff2cf75d1.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6b675322cdd7f53479ffa4f790679c07dfe85b2c0e264e52b3c87ae6e4b4e4b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b675322cdd7f53479ffa4f790679c07dfe85b2c0e264e52b3c87ae6e4b4e4b8", kill_on_drop: false }`
[INFO] [stdout] 6b675322cdd7f53479ffa4f790679c07dfe85b2c0e264e52b3c87ae6e4b4e4b8