[INFO] crate jvm-assembler 0.0.1 is already in cache
[INFO] testing jvm-assembler-0.0.1 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate jvm-assembler 0.0.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate jvm-assembler 0.0.1 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate jvm-assembler 0.0.1
[INFO] finished tweaking crates.io crate jvm-assembler 0.0.1
[INFO] tweaked toml for crates.io crate jvm-assembler 0.0.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stdout] 7162cc583c7efec1989fa74f6040dc4fbc7a27b58cff756ca9a1d1394ce59f41
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "7162cc583c7efec1989fa74f6040dc4fbc7a27b58cff756ca9a1d1394ce59f41"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling jvm-assembler v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:526:9
[INFO] [stderr]     |
[INFO] [stderr] 526 |         try!(writeln!(f, "Magic: 0x{:X}", self.magic));
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:527:9
[INFO] [stderr]     |
[INFO] [stderr] 527 |         try!(writeln!(f, "Minor version: {}", self.minor_version));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:528:9
[INFO] [stderr]     |
[INFO] [stderr] 528 |         try!(writeln!(f, "Major version: {}", self.major_version));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:529:9
[INFO] [stderr]     |
[INFO] [stderr] 529 |         try!(writeln!(f, "Constant pool:"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:531:9
[INFO] [stderr]     |
[INFO] [stderr] 531 |         try!(constant_pool_with_indices.pretty_println(f, 2));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:532:9
[INFO] [stderr]     |
[INFO] [stderr] 532 |         try!(writeln!(f, "Access flags: 0x{:X}", self.access_flags));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:533:9
[INFO] [stderr]     |
[INFO] [stderr] 533 |         try!(writeln!(f, "This class: {}", self.this_class));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:534:9
[INFO] [stderr]     |
[INFO] [stderr] 534 |         try!(writeln!(f, "Super class: {}", self.super_class));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:535:9
[INFO] [stderr]     |
[INFO] [stderr] 535 |         try!(writeln!(f, "Interfaces:"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:536:9
[INFO] [stderr]     |
[INFO] [stderr] 536 |         try!(self.interfaces.pretty_println(f, 2));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:537:9
[INFO] [stderr]     |
[INFO] [stderr] 537 |         try!(writeln!(f, "Fields:"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:538:9
[INFO] [stderr]     |
[INFO] [stderr] 538 |         try!(self.fields.pretty_println(f, 2));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:539:9
[INFO] [stderr]     |
[INFO] [stderr] 539 |         try!(writeln!(f, "Methods:"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:540:9
[INFO] [stderr]     |
[INFO] [stderr] 540 |         try!(self.methods.pretty_println(f, 2));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:541:9
[INFO] [stderr]     |
[INFO] [stderr] 541 |         try!(writeln!(f, "Attributes:"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:550:9
[INFO] [stderr]     |
[INFO] [stderr] 550 |         try!(self.pretty_print(f, indent));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:555:9
[INFO] [stderr]     |
[INFO] [stderr] 555 |         try!(write!(f, "\n"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:564:13
[INFO] [stderr]     |
[INFO] [stderr] 564 |             try!(write!(f, "{0:1$}", "", indent));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:565:13
[INFO] [stderr]     |
[INFO] [stderr] 565 |             try!(item.pretty_print(f, indent + 2));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:568:17
[INFO] [stderr]     |
[INFO] [stderr] 568 |                 try!(write!(f, "\n"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:576:13
[INFO] [stderr]     |
[INFO] [stderr] 576 |             try!(self.pretty_print(f, indent));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:586:13
[INFO] [stderr]     |
[INFO] [stderr] 586 |             try!(write!(f, "\n"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:597:9
[INFO] [stderr]     |
[INFO] [stderr] 597 |         try!(t.pretty_print(f, indent));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:599:9
[INFO] [stderr]     |
[INFO] [stderr] 599 |         try!(u.pretty_print(f, indent));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:642:9
[INFO] [stderr]     |
[INFO] [stderr] 642 |         try!(write!(f, "Method(access_flags: 0x{:X}, name_index: {}, descriptor_index: {})\n", self.access_flags, self.name_index, self.descriptor_index));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:643:9
[INFO] [stderr]     |
[INFO] [stderr] 643 |         try!(write!(f, "{0:1$}Attributes:", "", indent));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:644:9
[INFO] [stderr]     |
[INFO] [stderr] 644 |         try!(self.attributes.pretty_print_preln(f, indent + 2));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:653:17
[INFO] [stderr]     |
[INFO] [stderr] 653 |                 try!(write!(f, "Code(max_stack: {}, max_locals: {})\n", max_stack, max_locals));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:654:17
[INFO] [stderr]     |
[INFO] [stderr] 654 |                 try!(write!(f, "{0:1$}Instructions:\n", "", indent));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:655:17
[INFO] [stderr]     |
[INFO] [stderr] 655 |                 try!(code.pretty_println(f, indent + 2));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:656:17
[INFO] [stderr]     |
[INFO] [stderr] 656 |                 try!(write!(f, "{0:1$}Exception table:\n", "", indent));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:657:17
[INFO] [stderr]     |
[INFO] [stderr] 657 |                 try!(exception_table.pretty_println(f, indent + 2));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:658:17
[INFO] [stderr]     |
[INFO] [stderr] 658 |                 try!(write!(f, "{0:1$}Attributes:", "", indent));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:659:17
[INFO] [stderr]     |
[INFO] [stderr] 659 |                 try!(attributes.pretty_print_preln(f, indent + 2));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/classfile.rs:96:36
[INFO] [stderr]    |
[INFO] [stderr] 96 |     pub fn deserialize(stream: Box<Read>) -> Classfile {
[INFO] [stderr]    |                                    ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/classfile.rs:150:17
[INFO] [stderr]     |
[INFO] [stderr] 150 |     stream: Box<Iterator<Item=u8>>,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=u8>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/classfile.rs:155:24
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn new(stream: Box<Iterator<Item=u8>>) -> Deserializer {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=u8>`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:393:24
[INFO] [stderr]     |
[INFO] [stderr] 393 |     fn serialize(self, buf: &mut Vec<u8>) {
[INFO] [stderr]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:397:20
[INFO] [stderr]     |
[INFO] [stderr] 397 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Interface {
[INFO] [stderr]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `classfile`
[INFO] [stderr]    --> src/classfile.rs:397:44
[INFO] [stderr]     |
[INFO] [stderr] 397 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Interface {
[INFO] [stderr]     |                                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_classfile`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:403:24
[INFO] [stderr]     |
[INFO] [stderr] 403 |     fn serialize(self, buf: &mut Vec<u8>) {
[INFO] [stderr]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:407:20
[INFO] [stderr]     |
[INFO] [stderr] 407 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Field {
[INFO] [stderr]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `classfile`
[INFO] [stderr]    --> src/classfile.rs:407:44
[INFO] [stderr]     |
[INFO] [stderr] 407 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Field {
[INFO] [stderr]     |                                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_classfile`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:472:24
[INFO] [stderr]     |
[INFO] [stderr] 472 |     fn serialize(self, buf: &mut Vec<u8>) {
[INFO] [stderr]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:476:20
[INFO] [stderr]     |
[INFO] [stderr] 476 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> ExceptionTableEntry {
[INFO] [stderr]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `classfile`
[INFO] [stderr]    --> src/classfile.rs:476:44
[INFO] [stderr]     |
[INFO] [stderr] 476 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> ExceptionTableEntry {
[INFO] [stderr]     |                                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_classfile`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/classfile.rs:97:13
[INFO] [stderr]    |
[INFO] [stderr] 97 |         let mut buf = &mut Deserializer::new(Box::new(stream.bytes().map(|r| r.unwrap())));
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/classfile.rs:336:13
[INFO] [stderr]     |
[INFO] [stderr] 336 |         let mut code_buf = &mut Deserializer::new(Box::new(code.into_iter()));
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/classfile.rs:454:13
[INFO] [stderr]     |
[INFO] [stderr] 454 |         let mut buf2 = &mut Deserializer::new(Box::new(attribute_body.into_iter()));
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `ACC_PUBLIC`
[INFO] [stderr]  --> src/classfile_builder.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub const ACC_PUBLIC: u16 = 0x1;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `ACC_STATIC`
[INFO] [stderr]  --> src/classfile_builder.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub const ACC_STATIC: u16 = 0x8;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ClassfileBuilder`
[INFO] [stderr]  --> src/classfile_builder.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct ClassfileBuilder {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/classfile_builder.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn new(access_flags: u16, this_class: &str, super_class: &str) -> ClassfileBuilder {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_method`
[INFO] [stderr]   --> src/classfile_builder.rs:28:12
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn define_method(&mut self, access_flags: u16, name: &str, descriptor: &str) -> MethodBuilder {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `push_constant`
[INFO] [stderr]   --> src/classfile_builder.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn push_constant(&mut self, constant: Constant) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_utf8`
[INFO] [stderr]   --> src/classfile_builder.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn define_utf8(&mut self, string: &str) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_class`
[INFO] [stderr]   --> src/classfile_builder.rs:42:8
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn define_class(&mut self, class: &str) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_name_and_type`
[INFO] [stderr]   --> src/classfile_builder.rs:47:8
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn define_name_and_type(&mut self, name: &str, descriptor: &str) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_fieldref`
[INFO] [stderr]   --> src/classfile_builder.rs:53:8
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn define_fieldref(&mut self, class: &str, name: &str, descriptor: &str) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_methodref`
[INFO] [stderr]   --> src/classfile_builder.rs:59:8
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn define_methodref(&mut self, class: &str, name: &str, descriptor: &str) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `done`
[INFO] [stderr]   --> src/classfile_builder.rs:65:12
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn done(self) -> Classfile {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MethodBuilder`
[INFO] [stderr]   --> src/classfile_builder.rs:70:12
[INFO] [stderr]    |
[INFO] [stderr] 70 | pub struct MethodBuilder<'a> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/classfile_builder.rs:81:8
[INFO] [stderr]    |
[INFO] [stderr] 81 |     fn new(classfile: &'a mut ClassfileBuilder, access_flags: u16, name: &str, descriptor: &str) -> MethodBuilder<'a> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_static`
[INFO] [stderr]   --> src/classfile_builder.rs:95:12
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pub fn get_static(&mut self, class: &str, name: &str, descriptor: &str) {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `invoke_virtual`
[INFO] [stderr]    --> src/classfile_builder.rs:101:12
[INFO] [stderr]     |
[INFO] [stderr] 101 |     pub fn invoke_virtual(&mut self, class: &str, name: &str, descriptor: &str) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `bipush`
[INFO] [stderr]    --> src/classfile_builder.rs:107:12
[INFO] [stderr]     |
[INFO] [stderr] 107 |     pub fn bipush(&mut self, value: i8) {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `iadd`
[INFO] [stderr]    --> src/classfile_builder.rs:112:12
[INFO] [stderr]     |
[INFO] [stderr] 112 |     pub fn iadd(&mut self) {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `do_return`
[INFO] [stderr]    --> src/classfile_builder.rs:117:12
[INFO] [stderr]     |
[INFO] [stderr] 117 |     pub fn do_return(&mut self) {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `increase_stack_depth`
[INFO] [stderr]    --> src/classfile_builder.rs:121:8
[INFO] [stderr]     |
[INFO] [stderr] 121 |     fn increase_stack_depth(&mut self) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `decrease_stack_depth`
[INFO] [stderr]    --> src/classfile_builder.rs:128:8
[INFO] [stderr]     |
[INFO] [stderr] 128 |     fn decrease_stack_depth(&mut self) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `done`
[INFO] [stderr]    --> src/classfile_builder.rs:132:12
[INFO] [stderr]     |
[INFO] [stderr] 132 |     pub fn done(self) {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/classfile.rs:598:9
[INFO] [stderr]     |
[INFO] [stderr] 598 |         write!(f, ": ");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 72 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.07s
[INFO] running `"docker" "inspect" "7162cc583c7efec1989fa74f6040dc4fbc7a27b58cff756ca9a1d1394ce59f41"`
[INFO] running `"docker" "rm" "-f" "7162cc583c7efec1989fa74f6040dc4fbc7a27b58cff756ca9a1d1394ce59f41"`
[INFO] [stdout] 7162cc583c7efec1989fa74f6040dc4fbc7a27b58cff756ca9a1d1394ce59f41
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7f47fb5846652e5d07d9ec27bb1a0809cf3f269f89f17789c8e7e3b9fc9e5c9a
[INFO] running `"docker" "start" "-a" "7f47fb5846652e5d07d9ec27bb1a0809cf3f269f89f17789c8e7e3b9fc9e5c9a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling jvm-assembler v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:526:9
[INFO] [stderr]     |
[INFO] [stderr] 526 |         try!(writeln!(f, "Magic: 0x{:X}", self.magic));
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:527:9
[INFO] [stderr]     |
[INFO] [stderr] 527 |         try!(writeln!(f, "Minor version: {}", self.minor_version));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:528:9
[INFO] [stderr]     |
[INFO] [stderr] 528 |         try!(writeln!(f, "Major version: {}", self.major_version));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:529:9
[INFO] [stderr]     |
[INFO] [stderr] 529 |         try!(writeln!(f, "Constant pool:"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:531:9
[INFO] [stderr]     |
[INFO] [stderr] 531 |         try!(constant_pool_with_indices.pretty_println(f, 2));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:532:9
[INFO] [stderr]     |
[INFO] [stderr] 532 |         try!(writeln!(f, "Access flags: 0x{:X}", self.access_flags));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:533:9
[INFO] [stderr]     |
[INFO] [stderr] 533 |         try!(writeln!(f, "This class: {}", self.this_class));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:534:9
[INFO] [stderr]     |
[INFO] [stderr] 534 |         try!(writeln!(f, "Super class: {}", self.super_class));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:535:9
[INFO] [stderr]     |
[INFO] [stderr] 535 |         try!(writeln!(f, "Interfaces:"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:536:9
[INFO] [stderr]     |
[INFO] [stderr] 536 |         try!(self.interfaces.pretty_println(f, 2));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:537:9
[INFO] [stderr]     |
[INFO] [stderr] 537 |         try!(writeln!(f, "Fields:"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:538:9
[INFO] [stderr]     |
[INFO] [stderr] 538 |         try!(self.fields.pretty_println(f, 2));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:539:9
[INFO] [stderr]     |
[INFO] [stderr] 539 |         try!(writeln!(f, "Methods:"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:540:9
[INFO] [stderr]     |
[INFO] [stderr] 540 |         try!(self.methods.pretty_println(f, 2));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:541:9
[INFO] [stderr]     |
[INFO] [stderr] 541 |         try!(writeln!(f, "Attributes:"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:550:9
[INFO] [stderr]     |
[INFO] [stderr] 550 |         try!(self.pretty_print(f, indent));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:555:9
[INFO] [stderr]     |
[INFO] [stderr] 555 |         try!(write!(f, "\n"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:564:13
[INFO] [stderr]     |
[INFO] [stderr] 564 |             try!(write!(f, "{0:1$}", "", indent));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:565:13
[INFO] [stderr]     |
[INFO] [stderr] 565 |             try!(item.pretty_print(f, indent + 2));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:568:17
[INFO] [stderr]     |
[INFO] [stderr] 568 |                 try!(write!(f, "\n"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:576:13
[INFO] [stderr]     |
[INFO] [stderr] 576 |             try!(self.pretty_print(f, indent));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:586:13
[INFO] [stderr]     |
[INFO] [stderr] 586 |             try!(write!(f, "\n"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:597:9
[INFO] [stderr]     |
[INFO] [stderr] 597 |         try!(t.pretty_print(f, indent));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:599:9
[INFO] [stderr]     |
[INFO] [stderr] 599 |         try!(u.pretty_print(f, indent));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:642:9
[INFO] [stderr]     |
[INFO] [stderr] 642 |         try!(write!(f, "Method(access_flags: 0x{:X}, name_index: {}, descriptor_index: {})\n", self.access_flags, self.name_index, self.descriptor_index));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:643:9
[INFO] [stderr]     |
[INFO] [stderr] 643 |         try!(write!(f, "{0:1$}Attributes:", "", indent));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:644:9
[INFO] [stderr]     |
[INFO] [stderr] 644 |         try!(self.attributes.pretty_print_preln(f, indent + 2));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:653:17
[INFO] [stderr]     |
[INFO] [stderr] 653 |                 try!(write!(f, "Code(max_stack: {}, max_locals: {})\n", max_stack, max_locals));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:654:17
[INFO] [stderr]     |
[INFO] [stderr] 654 |                 try!(write!(f, "{0:1$}Instructions:\n", "", indent));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:655:17
[INFO] [stderr]     |
[INFO] [stderr] 655 |                 try!(code.pretty_println(f, indent + 2));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:656:17
[INFO] [stderr]     |
[INFO] [stderr] 656 |                 try!(write!(f, "{0:1$}Exception table:\n", "", indent));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:657:17
[INFO] [stderr]     |
[INFO] [stderr] 657 |                 try!(exception_table.pretty_println(f, indent + 2));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:658:17
[INFO] [stderr]     |
[INFO] [stderr] 658 |                 try!(write!(f, "{0:1$}Attributes:", "", indent));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:659:17
[INFO] [stderr]     |
[INFO] [stderr] 659 |                 try!(attributes.pretty_print_preln(f, indent + 2));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/classfile.rs:96:36
[INFO] [stderr]    |
[INFO] [stderr] 96 |     pub fn deserialize(stream: Box<Read>) -> Classfile {
[INFO] [stderr]    |                                    ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/classfile.rs:150:17
[INFO] [stderr]     |
[INFO] [stderr] 150 |     stream: Box<Iterator<Item=u8>>,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=u8>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/classfile.rs:155:24
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn new(stream: Box<Iterator<Item=u8>>) -> Deserializer {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=u8>`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:393:24
[INFO] [stderr]     |
[INFO] [stderr] 393 |     fn serialize(self, buf: &mut Vec<u8>) {
[INFO] [stderr]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:397:20
[INFO] [stderr]     |
[INFO] [stderr] 397 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Interface {
[INFO] [stderr]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `classfile`
[INFO] [stderr]    --> src/classfile.rs:397:44
[INFO] [stderr]     |
[INFO] [stderr] 397 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Interface {
[INFO] [stderr]     |                                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_classfile`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:403:24
[INFO] [stderr]     |
[INFO] [stderr] 403 |     fn serialize(self, buf: &mut Vec<u8>) {
[INFO] [stderr]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:407:20
[INFO] [stderr]     |
[INFO] [stderr] 407 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Field {
[INFO] [stderr]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `classfile`
[INFO] [stderr]    --> src/classfile.rs:407:44
[INFO] [stderr]     |
[INFO] [stderr] 407 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Field {
[INFO] [stderr]     |                                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_classfile`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:472:24
[INFO] [stderr]     |
[INFO] [stderr] 472 |     fn serialize(self, buf: &mut Vec<u8>) {
[INFO] [stderr]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:476:20
[INFO] [stderr]     |
[INFO] [stderr] 476 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> ExceptionTableEntry {
[INFO] [stderr]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `classfile`
[INFO] [stderr]    --> src/classfile.rs:476:44
[INFO] [stderr]     |
[INFO] [stderr] 476 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> ExceptionTableEntry {
[INFO] [stderr]     |                                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_classfile`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/classfile.rs:97:13
[INFO] [stderr]    |
[INFO] [stderr] 97 |         let mut buf = &mut Deserializer::new(Box::new(stream.bytes().map(|r| r.unwrap())));
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/classfile.rs:336:13
[INFO] [stderr]     |
[INFO] [stderr] 336 |         let mut code_buf = &mut Deserializer::new(Box::new(code.into_iter()));
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/classfile.rs:454:13
[INFO] [stderr]     |
[INFO] [stderr] 454 |         let mut buf2 = &mut Deserializer::new(Box::new(attribute_body.into_iter()));
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `ACC_PUBLIC`
[INFO] [stderr]  --> src/classfile_builder.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub const ACC_PUBLIC: u16 = 0x1;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `ACC_STATIC`
[INFO] [stderr]  --> src/classfile_builder.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub const ACC_STATIC: u16 = 0x8;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ClassfileBuilder`
[INFO] [stderr]  --> src/classfile_builder.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct ClassfileBuilder {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/classfile_builder.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn new(access_flags: u16, this_class: &str, super_class: &str) -> ClassfileBuilder {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_method`
[INFO] [stderr]   --> src/classfile_builder.rs:28:12
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn define_method(&mut self, access_flags: u16, name: &str, descriptor: &str) -> MethodBuilder {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `push_constant`
[INFO] [stderr]   --> src/classfile_builder.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn push_constant(&mut self, constant: Constant) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_utf8`
[INFO] [stderr]   --> src/classfile_builder.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn define_utf8(&mut self, string: &str) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_class`
[INFO] [stderr]   --> src/classfile_builder.rs:42:8
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn define_class(&mut self, class: &str) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_name_and_type`
[INFO] [stderr]   --> src/classfile_builder.rs:47:8
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn define_name_and_type(&mut self, name: &str, descriptor: &str) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_fieldref`
[INFO] [stderr]   --> src/classfile_builder.rs:53:8
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn define_fieldref(&mut self, class: &str, name: &str, descriptor: &str) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_methodref`
[INFO] [stderr]   --> src/classfile_builder.rs:59:8
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn define_methodref(&mut self, class: &str, name: &str, descriptor: &str) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `done`
[INFO] [stderr]   --> src/classfile_builder.rs:65:12
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn done(self) -> Classfile {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MethodBuilder`
[INFO] [stderr]   --> src/classfile_builder.rs:70:12
[INFO] [stderr]    |
[INFO] [stderr] 70 | pub struct MethodBuilder<'a> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/classfile_builder.rs:81:8
[INFO] [stderr]    |
[INFO] [stderr] 81 |     fn new(classfile: &'a mut ClassfileBuilder, access_flags: u16, name: &str, descriptor: &str) -> MethodBuilder<'a> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_static`
[INFO] [stderr]   --> src/classfile_builder.rs:95:12
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pub fn get_static(&mut self, class: &str, name: &str, descriptor: &str) {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `invoke_virtual`
[INFO] [stderr]    --> src/classfile_builder.rs:101:12
[INFO] [stderr]     |
[INFO] [stderr] 101 |     pub fn invoke_virtual(&mut self, class: &str, name: &str, descriptor: &str) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `bipush`
[INFO] [stderr]    --> src/classfile_builder.rs:107:12
[INFO] [stderr]     |
[INFO] [stderr] 107 |     pub fn bipush(&mut self, value: i8) {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `iadd`
[INFO] [stderr]    --> src/classfile_builder.rs:112:12
[INFO] [stderr]     |
[INFO] [stderr] 112 |     pub fn iadd(&mut self) {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `do_return`
[INFO] [stderr]    --> src/classfile_builder.rs:117:12
[INFO] [stderr]     |
[INFO] [stderr] 117 |     pub fn do_return(&mut self) {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `increase_stack_depth`
[INFO] [stderr]    --> src/classfile_builder.rs:121:8
[INFO] [stderr]     |
[INFO] [stderr] 121 |     fn increase_stack_depth(&mut self) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `decrease_stack_depth`
[INFO] [stderr]    --> src/classfile_builder.rs:128:8
[INFO] [stderr]     |
[INFO] [stderr] 128 |     fn decrease_stack_depth(&mut self) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `done`
[INFO] [stderr]    --> src/classfile_builder.rs:132:12
[INFO] [stderr]     |
[INFO] [stderr] 132 |     pub fn done(self) {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/classfile.rs:598:9
[INFO] [stderr]     |
[INFO] [stderr] 598 |         write!(f, ": ");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 72 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `"docker" "inspect" "7f47fb5846652e5d07d9ec27bb1a0809cf3f269f89f17789c8e7e3b9fc9e5c9a"`
[INFO] running `"docker" "rm" "-f" "7f47fb5846652e5d07d9ec27bb1a0809cf3f269f89f17789c8e7e3b9fc9e5c9a"`
[INFO] [stdout] 7f47fb5846652e5d07d9ec27bb1a0809cf3f269f89f17789c8e7e3b9fc9e5c9a
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 393d0d2c529f376199f30c1900dc7830c4e9fcc62e1aded244ac02d513a0b529
[INFO] running `"docker" "start" "-a" "393d0d2c529f376199f30c1900dc7830c4e9fcc62e1aded244ac02d513a0b529"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:526:9
[INFO] [stderr]     |
[INFO] [stderr] 526 |         try!(writeln!(f, "Magic: 0x{:X}", self.magic));
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:527:9
[INFO] [stderr]     |
[INFO] [stderr] 527 |         try!(writeln!(f, "Minor version: {}", self.minor_version));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:528:9
[INFO] [stderr]     |
[INFO] [stderr] 528 |         try!(writeln!(f, "Major version: {}", self.major_version));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:529:9
[INFO] [stderr]     |
[INFO] [stderr] 529 |         try!(writeln!(f, "Constant pool:"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:531:9
[INFO] [stderr]     |
[INFO] [stderr] 531 |         try!(constant_pool_with_indices.pretty_println(f, 2));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:532:9
[INFO] [stderr]     |
[INFO] [stderr] 532 |         try!(writeln!(f, "Access flags: 0x{:X}", self.access_flags));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:533:9
[INFO] [stderr]     |
[INFO] [stderr] 533 |         try!(writeln!(f, "This class: {}", self.this_class));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:534:9
[INFO] [stderr]     |
[INFO] [stderr] 534 |         try!(writeln!(f, "Super class: {}", self.super_class));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:535:9
[INFO] [stderr]     |
[INFO] [stderr] 535 |         try!(writeln!(f, "Interfaces:"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:536:9
[INFO] [stderr]     |
[INFO] [stderr] 536 |         try!(self.interfaces.pretty_println(f, 2));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:537:9
[INFO] [stderr]     |
[INFO] [stderr] 537 |         try!(writeln!(f, "Fields:"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:538:9
[INFO] [stderr]     |
[INFO] [stderr] 538 |         try!(self.fields.pretty_println(f, 2));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:539:9
[INFO] [stderr]     |
[INFO] [stderr] 539 |         try!(writeln!(f, "Methods:"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:540:9
[INFO] [stderr]     |
[INFO] [stderr] 540 |         try!(self.methods.pretty_println(f, 2));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:541:9
[INFO] [stderr]     |
[INFO] [stderr] 541 |         try!(writeln!(f, "Attributes:"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:550:9
[INFO] [stderr]     |
[INFO] [stderr] 550 |         try!(self.pretty_print(f, indent));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:555:9
[INFO] [stderr]     |
[INFO] [stderr] 555 |         try!(write!(f, "\n"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:564:13
[INFO] [stderr]     |
[INFO] [stderr] 564 |             try!(write!(f, "{0:1$}", "", indent));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:565:13
[INFO] [stderr]     |
[INFO] [stderr] 565 |             try!(item.pretty_print(f, indent + 2));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:568:17
[INFO] [stderr]     |
[INFO] [stderr] 568 |                 try!(write!(f, "\n"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:576:13
[INFO] [stderr]     |
[INFO] [stderr] 576 |             try!(self.pretty_print(f, indent));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:586:13
[INFO] [stderr]     |
[INFO] [stderr] 586 |             try!(write!(f, "\n"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:597:9
[INFO] [stderr]     |
[INFO] [stderr] 597 |         try!(t.pretty_print(f, indent));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:599:9
[INFO] [stderr]     |
[INFO] [stderr] 599 |         try!(u.pretty_print(f, indent));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:642:9
[INFO] [stderr]     |
[INFO] [stderr] 642 |         try!(write!(f, "Method(access_flags: 0x{:X}, name_index: {}, descriptor_index: {})\n", self.access_flags, self.name_index, self.descriptor_index));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:643:9
[INFO] [stderr]     |
[INFO] [stderr] 643 |         try!(write!(f, "{0:1$}Attributes:", "", indent));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:644:9
[INFO] [stderr]     |
[INFO] [stderr] 644 |         try!(self.attributes.pretty_print_preln(f, indent + 2));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:653:17
[INFO] [stderr]     |
[INFO] [stderr] 653 |                 try!(write!(f, "Code(max_stack: {}, max_locals: {})\n", max_stack, max_locals));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:654:17
[INFO] [stderr]     |
[INFO] [stderr] 654 |                 try!(write!(f, "{0:1$}Instructions:\n", "", indent));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:655:17
[INFO] [stderr]     |
[INFO] [stderr] 655 |                 try!(code.pretty_println(f, indent + 2));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:656:17
[INFO] [stderr]     |
[INFO] [stderr] 656 |                 try!(write!(f, "{0:1$}Exception table:\n", "", indent));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:657:17
[INFO] [stderr]     |
[INFO] [stderr] 657 |                 try!(exception_table.pretty_println(f, indent + 2));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:658:17
[INFO] [stderr]     |
[INFO] [stderr] 658 |                 try!(write!(f, "{0:1$}Attributes:", "", indent));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/classfile.rs:659:17
[INFO] [stderr]     |
[INFO] [stderr] 659 |                 try!(attributes.pretty_print_preln(f, indent + 2));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/classfile.rs:96:36
[INFO] [stderr]    |
[INFO] [stderr] 96 |     pub fn deserialize(stream: Box<Read>) -> Classfile {
[INFO] [stderr]    |                                    ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/classfile.rs:150:17
[INFO] [stderr]     |
[INFO] [stderr] 150 |     stream: Box<Iterator<Item=u8>>,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=u8>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/classfile.rs:155:24
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn new(stream: Box<Iterator<Item=u8>>) -> Deserializer {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=u8>`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:393:24
[INFO] [stderr]     |
[INFO] [stderr] 393 |     fn serialize(self, buf: &mut Vec<u8>) {
[INFO] [stderr]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:397:20
[INFO] [stderr]     |
[INFO] [stderr] 397 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Interface {
[INFO] [stderr]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `classfile`
[INFO] [stderr]    --> src/classfile.rs:397:44
[INFO] [stderr]     |
[INFO] [stderr] 397 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Interface {
[INFO] [stderr]     |                                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_classfile`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:403:24
[INFO] [stderr]     |
[INFO] [stderr] 403 |     fn serialize(self, buf: &mut Vec<u8>) {
[INFO] [stderr]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:407:20
[INFO] [stderr]     |
[INFO] [stderr] 407 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Field {
[INFO] [stderr]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `classfile`
[INFO] [stderr]    --> src/classfile.rs:407:44
[INFO] [stderr]     |
[INFO] [stderr] 407 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Field {
[INFO] [stderr]     |                                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_classfile`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:472:24
[INFO] [stderr]     |
[INFO] [stderr] 472 |     fn serialize(self, buf: &mut Vec<u8>) {
[INFO] [stderr]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> src/classfile.rs:476:20
[INFO] [stderr]     |
[INFO] [stderr] 476 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> ExceptionTableEntry {
[INFO] [stderr]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `classfile`
[INFO] [stderr]    --> src/classfile.rs:476:44
[INFO] [stderr]     |
[INFO] [stderr] 476 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> ExceptionTableEntry {
[INFO] [stderr]     |                                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_classfile`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/classfile.rs:97:13
[INFO] [stderr]    |
[INFO] [stderr] 97 |         let mut buf = &mut Deserializer::new(Box::new(stream.bytes().map(|r| r.unwrap())));
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/classfile.rs:336:13
[INFO] [stderr]     |
[INFO] [stderr] 336 |         let mut code_buf = &mut Deserializer::new(Box::new(code.into_iter()));
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/classfile.rs:454:13
[INFO] [stderr]     |
[INFO] [stderr] 454 |         let mut buf2 = &mut Deserializer::new(Box::new(attribute_body.into_iter()));
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `ACC_PUBLIC`
[INFO] [stderr]  --> src/classfile_builder.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub const ACC_PUBLIC: u16 = 0x1;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `ACC_STATIC`
[INFO] [stderr]  --> src/classfile_builder.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub const ACC_STATIC: u16 = 0x8;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ClassfileBuilder`
[INFO] [stderr]  --> src/classfile_builder.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct ClassfileBuilder {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/classfile_builder.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn new(access_flags: u16, this_class: &str, super_class: &str) -> ClassfileBuilder {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_method`
[INFO] [stderr]   --> src/classfile_builder.rs:28:12
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn define_method(&mut self, access_flags: u16, name: &str, descriptor: &str) -> MethodBuilder {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `push_constant`
[INFO] [stderr]   --> src/classfile_builder.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn push_constant(&mut self, constant: Constant) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_utf8`
[INFO] [stderr]   --> src/classfile_builder.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn define_utf8(&mut self, string: &str) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_class`
[INFO] [stderr]   --> src/classfile_builder.rs:42:8
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn define_class(&mut self, class: &str) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_name_and_type`
[INFO] [stderr]   --> src/classfile_builder.rs:47:8
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn define_name_and_type(&mut self, name: &str, descriptor: &str) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_fieldref`
[INFO] [stderr]   --> src/classfile_builder.rs:53:8
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn define_fieldref(&mut self, class: &str, name: &str, descriptor: &str) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define_methodref`
[INFO] [stderr]   --> src/classfile_builder.rs:59:8
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn define_methodref(&mut self, class: &str, name: &str, descriptor: &str) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `done`
[INFO] [stderr]   --> src/classfile_builder.rs:65:12
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn done(self) -> Classfile {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MethodBuilder`
[INFO] [stderr]   --> src/classfile_builder.rs:70:12
[INFO] [stderr]    |
[INFO] [stderr] 70 | pub struct MethodBuilder<'a> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/classfile_builder.rs:81:8
[INFO] [stderr]    |
[INFO] [stderr] 81 |     fn new(classfile: &'a mut ClassfileBuilder, access_flags: u16, name: &str, descriptor: &str) -> MethodBuilder<'a> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_static`
[INFO] [stderr]   --> src/classfile_builder.rs:95:12
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pub fn get_static(&mut self, class: &str, name: &str, descriptor: &str) {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `invoke_virtual`
[INFO] [stderr]    --> src/classfile_builder.rs:101:12
[INFO] [stderr]     |
[INFO] [stderr] 101 |     pub fn invoke_virtual(&mut self, class: &str, name: &str, descriptor: &str) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `bipush`
[INFO] [stderr]    --> src/classfile_builder.rs:107:12
[INFO] [stderr]     |
[INFO] [stderr] 107 |     pub fn bipush(&mut self, value: i8) {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `iadd`
[INFO] [stderr]    --> src/classfile_builder.rs:112:12
[INFO] [stderr]     |
[INFO] [stderr] 112 |     pub fn iadd(&mut self) {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `do_return`
[INFO] [stderr]    --> src/classfile_builder.rs:117:12
[INFO] [stderr]     |
[INFO] [stderr] 117 |     pub fn do_return(&mut self) {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `increase_stack_depth`
[INFO] [stderr]    --> src/classfile_builder.rs:121:8
[INFO] [stderr]     |
[INFO] [stderr] 121 |     fn increase_stack_depth(&mut self) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `decrease_stack_depth`
[INFO] [stderr]    --> src/classfile_builder.rs:128:8
[INFO] [stderr]     |
[INFO] [stderr] 128 |     fn decrease_stack_depth(&mut self) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `done`
[INFO] [stderr]    --> src/classfile_builder.rs:132:12
[INFO] [stderr]     |
[INFO] [stderr] 132 |     pub fn done(self) {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/classfile.rs:598:9
[INFO] [stderr]     |
[INFO] [stderr] 598 |         write!(f, ": ");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 72 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/jvm_assembler-e3283572aaba216c
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "393d0d2c529f376199f30c1900dc7830c4e9fcc62e1aded244ac02d513a0b529"`
[INFO] running `"docker" "rm" "-f" "393d0d2c529f376199f30c1900dc7830c4e9fcc62e1aded244ac02d513a0b529"`
[INFO] [stdout] 393d0d2c529f376199f30c1900dc7830c4e9fcc62e1aded244ac02d513a0b529