[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 master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBirbe%2Fjvm" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Birbe/jvm on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "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-1/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" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6d5b5de06be4f4a6817011f489b49c874b522a5bf8a040d74838d157535a424
[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" "b6d5b5de06be4f4a6817011f489b49c874b522a5bf8a040d74838d157535a424", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6d5b5de06be4f4a6817011f489b49c874b522a5bf8a040d74838d157535a424", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6d5b5de06be4f4a6817011f489b49c874b522a5bf8a040d74838d157535a424", kill_on_drop: false }`
[INFO] [stdout] b6d5b5de06be4f4a6817011f489b49c874b522a5bf8a040d74838d157535a424
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] adeb8825f3bc7e90f69efb1d10d2eb31c8b9c92c429eb8137313184be2f24290
[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" "adeb8825f3bc7e90f69efb1d10d2eb31c8b9c92c429eb8137313184be2f24290", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking hashbrown v0.3.1
[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: 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: 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: 4 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: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.51s
[INFO] running `Command { std: "docker" "inspect" "adeb8825f3bc7e90f69efb1d10d2eb31c8b9c92c429eb8137313184be2f24290", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adeb8825f3bc7e90f69efb1d10d2eb31c8b9c92c429eb8137313184be2f24290", kill_on_drop: false }`
[INFO] [stdout] adeb8825f3bc7e90f69efb1d10d2eb31c8b9c92c429eb8137313184be2f24290