[INFO] cloning repository https://github.com/vitmix/Rust-KVM
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vitmix/Rust-KVM" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvitmix%2FRust-KVM", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvitmix%2FRust-KVM'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0d63db9169249be29b40a0927c96305fdd87e0d9
[INFO] testing vitmix/Rust-KVM against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvitmix%2FRust-KVM" "/workspace/builds/worker-48/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-48/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vitmix/Rust-KVM on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vitmix/Rust-KVM
[INFO] finished tweaking git repo https://github.com/vitmix/Rust-KVM
[INFO] tweaked toml for git repo https://github.com/vitmix/Rust-KVM written to /workspace/builds/worker-48/source/Cargo.toml
[INFO] crate git repo https://github.com/vitmix/Rust-KVM already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ad0aaba84e0eb10e30e4650c45092ef61e5d2bf533977c29680107ccd17fad7
[INFO] running `Command { std: "docker" "start" "-a" "2ad0aaba84e0eb10e30e4650c45092ef61e5d2bf533977c29680107ccd17fad7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ad0aaba84e0eb10e30e4650c45092ef61e5d2bf533977c29680107ccd17fad7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ad0aaba84e0eb10e30e4650c45092ef61e5d2bf533977c29680107ccd17fad7", kill_on_drop: false }`
[INFO] [stdout] 2ad0aaba84e0eb10e30e4650c45092ef61e5d2bf533977c29680107ccd17fad7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa85542129c1ea51bd3283aa6f5da3170ead8bd13bbce6ba02b397db22ba1a44
[INFO] running `Command { std: "docker" "start" "-a" "fa85542129c1ea51bd3283aa6f5da3170ead8bd13bbce6ba02b397db22ba1a44", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling dumb_class_reader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `constant_pool::ConstantPoolEntry`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use constant_pool::ConstantPoolEntry;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BigEndian`, `ByteOrder`, `ReadBytesExt`
[INFO] [stdout]  --> src/raw_class_reader.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use byteorder::{BigEndian, ReadBytesExt, ByteOrder};
[INFO] [stdout]   |                 ^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ConstantPoolEntry`, `ConstantPool`
[INFO] [stdout]  --> src/raw_class_reader.rs:8:28
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::constant_pool::{ConstantPoolEntry, ConstantPool};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ACC_ABSTRACT`, `ACC_FINAL`, `ACC_INTERFACE`, `ACC_PUBLIC`, `ACC_SUPER`
[INFO] [stdout]  --> src/raw_class_reader.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::declarations::{ACC_PUBLIC, ACC_FINAL, ACC_SUPER, ACC_INTERFACE, ACC_ABSTRACT};
[INFO] [stdout]   |                           ^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/constant_pool.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/attributes.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Cursor, Read};
[INFO] [stdout]   |                       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ByteOrder`
[INFO] [stdout]  --> src/class_file.rs:2:42
[INFO] [stdout]   |
[INFO] [stdout] 2 | use byteorder::{BigEndian, ReadBytesExt, ByteOrder};
[INFO] [stdout]   |                                          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/constant_pool.rs:100:13
[INFO] [stdout]     |
[INFO] [stdout] 100 |             _ => unreachable!("Cannot parse entry of unknown constant pool tag")
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/class_file.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |         for i in 0..super_interfaces_count {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `attr_count` is never read
[INFO] [stdout]   --> src/method_info.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut attr_count: usize = 0;
[INFO] [stdout]    |                 ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ACC_PUBLIC`
[INFO] [stdout]  --> src/declarations.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |         pub const $name: u16 = $value;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 7 | define_access_flag!(ACC_PUBLIC, 0x0001);
[INFO] [stdout]   | --------------------------------------- in this macro invocation
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]   = note: this warning originates in the macro `define_access_flag` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ACC_FINAL`
[INFO] [stdout]  --> src/declarations.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |         pub const $name: u16 = $value;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 8 | define_access_flag!(ACC_FINAL, 0x0010);
[INFO] [stdout]   | -------------------------------------- in this macro invocation
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in the macro `define_access_flag` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ACC_SUPER`
[INFO] [stdout]  --> src/declarations.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |         pub const $name: u16 = $value;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 9 | define_access_flag!(ACC_SUPER, 0x0020);
[INFO] [stdout]   | -------------------------------------- in this macro invocation
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in the macro `define_access_flag` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ACC_INTERFACE`
[INFO] [stdout]   --> src/declarations.rs:3:9
[INFO] [stdout]    |
[INFO] [stdout] 3  |         pub const $name: u16 = $value;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 10 | define_access_flag!(ACC_INTERFACE, 0x0200);
[INFO] [stdout]    | ------------------------------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `define_access_flag` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ACC_ABSTRACT`
[INFO] [stdout]   --> src/declarations.rs:3:9
[INFO] [stdout]    |
[INFO] [stdout] 3  |         pub const $name: u16 = $value;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 | define_access_flag!(ACC_ABSTRACT, 0x0400);
[INFO] [stdout]    | ----------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `define_access_flag` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.49s
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fa85542129c1ea51bd3283aa6f5da3170ead8bd13bbce6ba02b397db22ba1a44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa85542129c1ea51bd3283aa6f5da3170ead8bd13bbce6ba02b397db22ba1a44", kill_on_drop: false }`
[INFO] [stdout] fa85542129c1ea51bd3283aa6f5da3170ead8bd13bbce6ba02b397db22ba1a44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71f31bdf06cd29aafdd281d167e4f885b2702f98cf250cff9053b10f93bac92b
[INFO] running `Command { std: "docker" "start" "-a" "71f31bdf06cd29aafdd281d167e4f885b2702f98cf250cff9053b10f93bac92b", kill_on_drop: false }`
[INFO] [stderr]    Compiling dumb_class_reader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BigEndian`, `ByteOrder`, `ReadBytesExt`
[INFO] [stdout]  --> src/raw_class_reader.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use byteorder::{BigEndian, ReadBytesExt, ByteOrder};
[INFO] [stdout]   |                 ^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ConstantPoolEntry`, `ConstantPool`
[INFO] [stdout]  --> src/raw_class_reader.rs:8:28
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::constant_pool::{ConstantPoolEntry, ConstantPool};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ACC_ABSTRACT`, `ACC_FINAL`, `ACC_INTERFACE`, `ACC_PUBLIC`, `ACC_SUPER`
[INFO] [stdout]  --> src/raw_class_reader.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::declarations::{ACC_PUBLIC, ACC_FINAL, ACC_SUPER, ACC_INTERFACE, ACC_ABSTRACT};
[INFO] [stdout]   |                           ^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/constant_pool.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/attributes.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Cursor, Read};
[INFO] [stdout]   |                       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:32:29
[INFO] [stdout]    |
[INFO] [stdout] 32 |     class_entry.parse_entry(&bytes[1..=2]);
[INFO] [stdout]    |                             ^^^^^^^^^^^^^ types differ in mutability
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected mutable reference `&mut std::io::Cursor<Vec<u8>>`
[INFO] [stdout]                       found reference `&[u8]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:51:32
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fieldref_entry.parse_entry(&bytes[1..]);
[INFO] [stdout]    |                                ^^^^^^^^^^^ types differ in mutability
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected mutable reference `&mut std::io::Cursor<Vec<u8>>`
[INFO] [stdout]                       found reference `&[u8]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ByteOrder`
[INFO] [stdout]  --> src/class_file.rs:2:42
[INFO] [stdout]   |
[INFO] [stdout] 2 | use byteorder::{BigEndian, ReadBytesExt, ByteOrder};
[INFO] [stdout]   |                                          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dumb_class_reader` due to 3 previous errors; 6 warnings emitted
[INFO] [stdout] error: aborting due to 2 previous errors; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "71f31bdf06cd29aafdd281d167e4f885b2702f98cf250cff9053b10f93bac92b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71f31bdf06cd29aafdd281d167e4f885b2702f98cf250cff9053b10f93bac92b", kill_on_drop: false }`
[INFO] [stdout] 71f31bdf06cd29aafdd281d167e4f885b2702f98cf250cff9053b10f93bac92b