[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] ac32994b2004b887aa74fb7db5ceb9427cc97d2a
[INFO] checking Birbe/jvm against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBirbe%2Fjvm" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Birbe/jvm on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", 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-12/source/Cargo.toml
[INFO] crate git repo https://github.com/Birbe/jvm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30151e9a032faa99ee76cf28289f2d077ed9d804240744e03a438999f7d654f4
[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" "30151e9a032faa99ee76cf28289f2d077ed9d804240744e03a438999f7d654f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30151e9a032faa99ee76cf28289f2d077ed9d804240744e03a438999f7d654f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30151e9a032faa99ee76cf28289f2d077ed9d804240744e03a438999f7d654f4", kill_on_drop: false }`
[INFO] [stdout] 30151e9a032faa99ee76cf28289f2d077ed9d804240744e03a438999f7d654f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2872441bfeb3cb9b98c9defec1fe47ee3f52395ddb1d57514eb5a17774b42e0c
[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" "2872441bfeb3cb9b98c9defec1fe47ee3f52395ddb1d57514eb5a17774b42e0c", kill_on_drop: false }`
[INFO] [stderr]     Checking jvm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ArrayType`
[INFO] [stdout]  --> src/vm/vm.rs:1:118
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::vm::class::{Class, FieldDescriptor, MethodDescriptor, AccessFlags, RefInfoType, Method, MethodReturnType, ArrayType};
[INFO] [stdout]   |                                                                                                                      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ArrayType`
[INFO] [stdout]  --> src/vm/vm.rs:1:118
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::vm::class::{Class, FieldDescriptor, MethodDescriptor, AccessFlags, RefInfoType, Method, MethodReturnType, ArrayType};
[INFO] [stdout]   |                                                                                                                      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `object_type`
[INFO] [stdout]     --> src/vm/vm.rs:1060:49
[INFO] [stdout]      |
[INFO] [stdout] 1060 |                     FieldDescriptor::ObjectType(object_type) => {
[INFO] [stdout]      |                                                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_object_type`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `base_type`
[INFO] [stdout]   --> src/lib.rs:19:46
[INFO] [stdout]    |
[INFO] [stdout] 19 |             if let FieldDescriptor::BaseType(base_type) = f {
[INFO] [stdout]    |                                              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_base_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `object_type`
[INFO] [stdout]     --> src/vm/vm.rs:1060:49
[INFO] [stdout]      |
[INFO] [stdout] 1060 |                     FieldDescriptor::ObjectType(object_type) => {
[INFO] [stdout]      |                                                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_object_type`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/vm/vm.rs:161:30
[INFO] [stdout]     |
[INFO] [stdout] 161 |         let (header, body) = unsafe { VirtualMachine::get_array::<usize>(string_arr_ptr as *mut u8) };
[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]    --> src/vm/vm.rs:887:38
[INFO] [stdout]     |
[INFO] [stdout] 887 |                 let (header, body) = unsafe { VirtualMachine::get_array::<usize>(arr_ptr) };
[INFO] [stdout]     |                                      ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/vm/vm.rs:161:30
[INFO] [stdout]     |
[INFO] [stdout] 161 |         let (header, body) = unsafe { VirtualMachine::get_array::<usize>(string_arr_ptr as *mut u8) };
[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]    --> src/vm/vm.rs:887:38
[INFO] [stdout]     |
[INFO] [stdout] 887 |                 let (header, body) = unsafe { VirtualMachine::get_array::<usize>(arr_ptr) };
[INFO] [stdout]     |                                      ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.20s
[INFO] running `Command { std: "docker" "inspect" "2872441bfeb3cb9b98c9defec1fe47ee3f52395ddb1d57514eb5a17774b42e0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2872441bfeb3cb9b98c9defec1fe47ee3f52395ddb1d57514eb5a17774b42e0c", kill_on_drop: false }`
[INFO] [stdout] 2872441bfeb3cb9b98c9defec1fe47ee3f52395ddb1d57514eb5a17774b42e0c