[INFO] fetching crate jvm-assembler 0.0.1...
[INFO] checking jvm-assembler-0.0.1 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate jvm-assembler 0.0.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate jvm-assembler 0.0.1 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be32fd57d2b9718fc37a709af1dbb601ec582f26538a3234cfcd98aa906a7ac3
[INFO] running `Command { std: "docker" "start" "-a" "be32fd57d2b9718fc37a709af1dbb601ec582f26538a3234cfcd98aa906a7ac3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be32fd57d2b9718fc37a709af1dbb601ec582f26538a3234cfcd98aa906a7ac3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be32fd57d2b9718fc37a709af1dbb601ec582f26538a3234cfcd98aa906a7ac3", kill_on_drop: false }`
[INFO] [stdout] be32fd57d2b9718fc37a709af1dbb601ec582f26538a3234cfcd98aa906a7ac3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cabe34c1bbdf49826a7abafa928bd8effc9cf5c7580040ac4d36a99a0e656857
[INFO] running `Command { std: "docker" "start" "-a" "cabe34c1bbdf49826a7abafa928bd8effc9cf5c7580040ac4d36a99a0e656857", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking jvm-assembler v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/classfile.rs:171:24
[INFO] [stdout]     |
[INFO] [stdout] 171 |     fn serialize(self, &mut Vec<u8>);
[INFO] [stdout]     |                        ^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Vec<u8>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/classfile.rs:172:20
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn deserialize(&mut Deserializer, &Classfile) -> Self;
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Deserializer`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/classfile.rs:172:39
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn deserialize(&mut Deserializer, &Classfile) -> Self;
[INFO] [stdout]     |                                       ^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Classfile`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:526:9
[INFO] [stdout]     |
[INFO] [stdout] 526 |         try!(writeln!(f, "Magic: 0x{:X}", self.magic));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:527:9
[INFO] [stdout]     |
[INFO] [stdout] 527 |         try!(writeln!(f, "Minor version: {}", self.minor_version));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:528:9
[INFO] [stdout]     |
[INFO] [stdout] 528 |         try!(writeln!(f, "Major version: {}", self.major_version));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:529:9
[INFO] [stdout]     |
[INFO] [stdout] 529 |         try!(writeln!(f, "Constant pool:"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:531:9
[INFO] [stdout]     |
[INFO] [stdout] 531 |         try!(constant_pool_with_indices.pretty_println(f, 2));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:532:9
[INFO] [stdout]     |
[INFO] [stdout] 532 |         try!(writeln!(f, "Access flags: 0x{:X}", self.access_flags));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:533:9
[INFO] [stdout]     |
[INFO] [stdout] 533 |         try!(writeln!(f, "This class: {}", self.this_class));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:534:9
[INFO] [stdout]     |
[INFO] [stdout] 534 |         try!(writeln!(f, "Super class: {}", self.super_class));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:535:9
[INFO] [stdout]     |
[INFO] [stdout] 535 |         try!(writeln!(f, "Interfaces:"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:536:9
[INFO] [stdout]     |
[INFO] [stdout] 536 |         try!(self.interfaces.pretty_println(f, 2));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:537:9
[INFO] [stdout]     |
[INFO] [stdout] 537 |         try!(writeln!(f, "Fields:"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:538:9
[INFO] [stdout]     |
[INFO] [stdout] 538 |         try!(self.fields.pretty_println(f, 2));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:539:9
[INFO] [stdout]     |
[INFO] [stdout] 539 |         try!(writeln!(f, "Methods:"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:540:9
[INFO] [stdout]     |
[INFO] [stdout] 540 |         try!(self.methods.pretty_println(f, 2));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:541:9
[INFO] [stdout]     |
[INFO] [stdout] 541 |         try!(writeln!(f, "Attributes:"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:550:9
[INFO] [stdout]     |
[INFO] [stdout] 550 |         try!(self.pretty_print(f, indent));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:555:9
[INFO] [stdout]     |
[INFO] [stdout] 555 |         try!(write!(f, "\n"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:564:13
[INFO] [stdout]     |
[INFO] [stdout] 564 |             try!(write!(f, "{0:1$}", "", indent));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:565:13
[INFO] [stdout]     |
[INFO] [stdout] 565 |             try!(item.pretty_print(f, indent + 2));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:568:17
[INFO] [stdout]     |
[INFO] [stdout] 568 |                 try!(write!(f, "\n"));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:576:13
[INFO] [stdout]     |
[INFO] [stdout] 576 |             try!(self.pretty_print(f, indent));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:586:13
[INFO] [stdout]     |
[INFO] [stdout] 586 |             try!(write!(f, "\n"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:597:9
[INFO] [stdout]     |
[INFO] [stdout] 597 |         try!(t.pretty_print(f, indent));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:599:9
[INFO] [stdout]     |
[INFO] [stdout] 599 |         try!(u.pretty_print(f, indent));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:642:9
[INFO] [stdout]     |
[INFO] [stdout] 642 | ...   try!(write!(f, "Method(access_flags: 0x{:X}, name_index: {}, descriptor_index: {})\n", self.access_flags, self.name_index, self.des...
[INFO] [stdout]     |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:643:9
[INFO] [stdout]     |
[INFO] [stdout] 643 |         try!(write!(f, "{0:1$}Attributes:", "", indent));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:644:9
[INFO] [stdout]     |
[INFO] [stdout] 644 |         try!(self.attributes.pretty_print_preln(f, indent + 2));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:653:17
[INFO] [stdout]     |
[INFO] [stdout] 653 |                 try!(write!(f, "Code(max_stack: {}, max_locals: {})\n", max_stack, max_locals));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:654:17
[INFO] [stdout]     |
[INFO] [stdout] 654 |                 try!(write!(f, "{0:1$}Instructions:\n", "", indent));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:655:17
[INFO] [stdout]     |
[INFO] [stdout] 655 |                 try!(code.pretty_println(f, indent + 2));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/classfile.rs:171:24
[INFO] [stdout]     |
[INFO] [stdout] 171 |     fn serialize(self, &mut Vec<u8>);
[INFO] [stdout]     |                        ^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Vec<u8>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:656:17
[INFO] [stdout]     |
[INFO] [stdout] 656 |                 try!(write!(f, "{0:1$}Exception table:\n", "", indent));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:657:17
[INFO] [stdout]     |
[INFO] [stdout] 657 |                 try!(exception_table.pretty_println(f, indent + 2));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:658:17
[INFO] [stdout]     |
[INFO] [stdout] 658 |                 try!(write!(f, "{0:1$}Attributes:", "", indent));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:659:17
[INFO] [stdout]     |
[INFO] [stdout] 659 |                 try!(attributes.pretty_print_preln(f, indent + 2));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/classfile.rs:172:20
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn deserialize(&mut Deserializer, &Classfile) -> Self;
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Deserializer`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/classfile.rs:172:39
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn deserialize(&mut Deserializer, &Classfile) -> Self;
[INFO] [stdout]     |                                       ^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Classfile`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:526:9
[INFO] [stdout]     |
[INFO] [stdout] 526 |         try!(writeln!(f, "Magic: 0x{:X}", self.magic));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:527:9
[INFO] [stdout]     |
[INFO] [stdout] 527 |         try!(writeln!(f, "Minor version: {}", self.minor_version));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:528:9
[INFO] [stdout]     |
[INFO] [stdout] 528 |         try!(writeln!(f, "Major version: {}", self.major_version));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:529:9
[INFO] [stdout]     |
[INFO] [stdout] 529 |         try!(writeln!(f, "Constant pool:"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:531:9
[INFO] [stdout]     |
[INFO] [stdout] 531 |         try!(constant_pool_with_indices.pretty_println(f, 2));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:532:9
[INFO] [stdout]     |
[INFO] [stdout] 532 |         try!(writeln!(f, "Access flags: 0x{:X}", self.access_flags));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:533:9
[INFO] [stdout]     |
[INFO] [stdout] 533 |         try!(writeln!(f, "This class: {}", self.this_class));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:534:9
[INFO] [stdout]     |
[INFO] [stdout] 534 |         try!(writeln!(f, "Super class: {}", self.super_class));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:535:9
[INFO] [stdout]     |
[INFO] [stdout] 535 |         try!(writeln!(f, "Interfaces:"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:536:9
[INFO] [stdout]     |
[INFO] [stdout] 536 |         try!(self.interfaces.pretty_println(f, 2));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:537:9
[INFO] [stdout]     |
[INFO] [stdout] 537 |         try!(writeln!(f, "Fields:"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:538:9
[INFO] [stdout]     |
[INFO] [stdout] 538 |         try!(self.fields.pretty_println(f, 2));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:539:9
[INFO] [stdout]     |
[INFO] [stdout] 539 |         try!(writeln!(f, "Methods:"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:540:9
[INFO] [stdout]     |
[INFO] [stdout] 540 |         try!(self.methods.pretty_println(f, 2));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:541:9
[INFO] [stdout]     |
[INFO] [stdout] 541 |         try!(writeln!(f, "Attributes:"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:550:9
[INFO] [stdout]     |
[INFO] [stdout] 550 |         try!(self.pretty_print(f, indent));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:555:9
[INFO] [stdout]     |
[INFO] [stdout] 555 |         try!(write!(f, "\n"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:564:13
[INFO] [stdout]     |
[INFO] [stdout] 564 |             try!(write!(f, "{0:1$}", "", indent));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:565:13
[INFO] [stdout]     |
[INFO] [stdout] 565 |             try!(item.pretty_print(f, indent + 2));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:568:17
[INFO] [stdout]     |
[INFO] [stdout] 568 |                 try!(write!(f, "\n"));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:576:13
[INFO] [stdout]     |
[INFO] [stdout] 576 |             try!(self.pretty_print(f, indent));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:586:13
[INFO] [stdout]     |
[INFO] [stdout] 586 |             try!(write!(f, "\n"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:597:9
[INFO] [stdout]     |
[INFO] [stdout] 597 |         try!(t.pretty_print(f, indent));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:599:9
[INFO] [stdout]     |
[INFO] [stdout] 599 |         try!(u.pretty_print(f, indent));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:642:9
[INFO] [stdout]     |
[INFO] [stdout] 642 | ...   try!(write!(f, "Method(access_flags: 0x{:X}, name_index: {}, descriptor_index: {})\n", self.access_flags, self.name_index, self.des...
[INFO] [stdout]     |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:643:9
[INFO] [stdout]     |
[INFO] [stdout] 643 |         try!(write!(f, "{0:1$}Attributes:", "", indent));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:644:9
[INFO] [stdout]     |
[INFO] [stdout] 644 |         try!(self.attributes.pretty_print_preln(f, indent + 2));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:653:17
[INFO] [stdout]     |
[INFO] [stdout] 653 |                 try!(write!(f, "Code(max_stack: {}, max_locals: {})\n", max_stack, max_locals));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:654:17
[INFO] [stdout]     |
[INFO] [stdout] 654 |                 try!(write!(f, "{0:1$}Instructions:\n", "", indent));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:655:17
[INFO] [stdout]     |
[INFO] [stdout] 655 |                 try!(code.pretty_println(f, indent + 2));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:656:17
[INFO] [stdout]     |
[INFO] [stdout] 656 |                 try!(write!(f, "{0:1$}Exception table:\n", "", indent));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:657:17
[INFO] [stdout]     |
[INFO] [stdout] 657 |                 try!(exception_table.pretty_println(f, indent + 2));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:658:17
[INFO] [stdout]     |
[INFO] [stdout] 658 |                 try!(write!(f, "{0:1$}Attributes:", "", indent));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/classfile.rs:659:17
[INFO] [stdout]     |
[INFO] [stdout] 659 |                 try!(attributes.pretty_print_preln(f, indent + 2));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/classfile.rs:150:17
[INFO] [stdout]     |
[INFO] [stdout] 150 |     stream: Box<Iterator<Item=u8>>,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 150 |     stream: Box<dyn Iterator<Item=u8>>,
[INFO] [stdout]     |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/classfile.rs:150:17
[INFO] [stdout]     |
[INFO] [stdout] 150 |     stream: Box<Iterator<Item=u8>>,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 150 |     stream: Box<dyn Iterator<Item=u8>>,
[INFO] [stdout]     |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/classfile.rs:96:36
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn deserialize(stream: Box<Read>) -> Classfile {
[INFO] [stdout]    |                                    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn deserialize(stream: Box<dyn Read>) -> Classfile {
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/classfile.rs:155:24
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn new(stream: Box<Iterator<Item=u8>>) -> Deserializer {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn new(stream: Box<dyn Iterator<Item=u8>>) -> Deserializer {
[INFO] [stdout]     |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/classfile.rs:96:36
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn deserialize(stream: Box<Read>) -> Classfile {
[INFO] [stdout]    |                                    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn deserialize(stream: Box<dyn Read>) -> Classfile {
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/classfile.rs:155:24
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn new(stream: Box<Iterator<Item=u8>>) -> Deserializer {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn new(stream: Box<dyn Iterator<Item=u8>>) -> Deserializer {
[INFO] [stdout]     |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/classfile.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let mut buf = &mut Deserializer::new(Box::new(stream.bytes().map(|r| r.unwrap())));
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/classfile.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let mut buf = &mut Deserializer::new(Box::new(stream.bytes().map(|r| r.unwrap())));
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/classfile.rs:336:13
[INFO] [stdout]     |
[INFO] [stdout] 336 |         let mut code_buf = &mut Deserializer::new(Box::new(code.into_iter()));
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/classfile.rs:336:13
[INFO] [stdout]     |
[INFO] [stdout] 336 |         let mut code_buf = &mut Deserializer::new(Box::new(code.into_iter()));
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/classfile.rs:393:24
[INFO] [stdout]     |
[INFO] [stdout] 393 |     fn serialize(self, buf: &mut Vec<u8>) {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/classfile.rs:397:20
[INFO] [stdout]     |
[INFO] [stdout] 397 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Interface {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `classfile`
[INFO] [stdout]    --> src/classfile.rs:397:44
[INFO] [stdout]     |
[INFO] [stdout] 397 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Interface {
[INFO] [stdout]     |                                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_classfile`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/classfile.rs:403:24
[INFO] [stdout]     |
[INFO] [stdout] 403 |     fn serialize(self, buf: &mut Vec<u8>) {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/classfile.rs:407:20
[INFO] [stdout]     |
[INFO] [stdout] 407 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Field {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `classfile`
[INFO] [stdout]    --> src/classfile.rs:407:44
[INFO] [stdout]     |
[INFO] [stdout] 407 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Field {
[INFO] [stdout]     |                                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_classfile`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/classfile.rs:393:24
[INFO] [stdout]     |
[INFO] [stdout] 393 |     fn serialize(self, buf: &mut Vec<u8>) {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/classfile.rs:397:20
[INFO] [stdout]     |
[INFO] [stdout] 397 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Interface {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `classfile`
[INFO] [stdout]    --> src/classfile.rs:397:44
[INFO] [stdout]     |
[INFO] [stdout] 397 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Interface {
[INFO] [stdout]     |                                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_classfile`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/classfile.rs:403:24
[INFO] [stdout]     |
[INFO] [stdout] 403 |     fn serialize(self, buf: &mut Vec<u8>) {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/classfile.rs:407:20
[INFO] [stdout]     |
[INFO] [stdout] 407 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Field {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `classfile`
[INFO] [stdout]    --> src/classfile.rs:407:44
[INFO] [stdout]     |
[INFO] [stdout] 407 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> Field {
[INFO] [stdout]     |                                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_classfile`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/classfile.rs:454:13
[INFO] [stdout]     |
[INFO] [stdout] 454 |         let mut buf2 = &mut Deserializer::new(Box::new(attribute_body.into_iter()));
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/classfile.rs:472:24
[INFO] [stdout]     |
[INFO] [stdout] 472 |     fn serialize(self, buf: &mut Vec<u8>) {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/classfile.rs:476:20
[INFO] [stdout]     |
[INFO] [stdout] 476 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> ExceptionTableEntry {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `classfile`
[INFO] [stdout]    --> src/classfile.rs:476:44
[INFO] [stdout]     |
[INFO] [stdout] 476 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> ExceptionTableEntry {
[INFO] [stdout]     |                                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_classfile`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/classfile.rs:454:13
[INFO] [stdout]     |
[INFO] [stdout] 454 |         let mut buf2 = &mut Deserializer::new(Box::new(attribute_body.into_iter()));
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/classfile.rs:472:24
[INFO] [stdout]     |
[INFO] [stdout] 472 |     fn serialize(self, buf: &mut Vec<u8>) {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/classfile.rs:476:20
[INFO] [stdout]     |
[INFO] [stdout] 476 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> ExceptionTableEntry {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `classfile`
[INFO] [stdout]    --> src/classfile.rs:476:44
[INFO] [stdout]     |
[INFO] [stdout] 476 |     fn deserialize(buf: &mut Deserializer, classfile: &Classfile) -> ExceptionTableEntry {
[INFO] [stdout]     |                                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_classfile`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ACC_PUBLIC` is never used
[INFO] [stdout]  --> src/classfile_builder.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub const ACC_PUBLIC: u16 = 0x1;
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ACC_STATIC` is never used
[INFO] [stdout]  --> src/classfile_builder.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const ACC_STATIC: u16 = 0x8;
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ClassfileBuilder` is never constructed
[INFO] [stdout]  --> src/classfile_builder.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ClassfileBuilder {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ACC_PUBLIC` is never used
[INFO] [stdout]  --> src/classfile_builder.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub const ACC_PUBLIC: u16 = 0x1;
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ACC_STATIC` is never used
[INFO] [stdout]  --> src/classfile_builder.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const ACC_STATIC: u16 = 0x8;
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ClassfileBuilder` is never constructed
[INFO] [stdout]  --> src/classfile_builder.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ClassfileBuilder {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/classfile_builder.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl ClassfileBuilder {
[INFO] [stdout]    | --------------------- associated items in this implementation
[INFO] [stdout] 15 |     pub fn new(access_flags: u16, this_class: &str, super_class: &str) -> ClassfileBuilder {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn define_method(&mut self, access_flags: u16, name: &str, descriptor: &str) -> MethodBuilder {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn push_constant(&mut self, constant: Constant) -> u16 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn define_utf8(&mut self, string: &str) -> u16 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     fn define_class(&mut self, class: &str) -> u16 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn define_name_and_type(&mut self, name: &str, descriptor: &str) -> u16 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn define_fieldref(&mut self, class: &str, name: &str, descriptor: &str) -> u16 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     fn define_methodref(&mut self, class: &str, name: &str, descriptor: &str) -> u16 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     pub fn done(self) -> Classfile {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MethodBuilder` is never constructed
[INFO] [stdout]   --> src/classfile_builder.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub struct MethodBuilder<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/classfile_builder.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl ClassfileBuilder {
[INFO] [stdout]    | --------------------- associated items in this implementation
[INFO] [stdout] 15 |     pub fn new(access_flags: u16, this_class: &str, super_class: &str) -> ClassfileBuilder {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn define_method(&mut self, access_flags: u16, name: &str, descriptor: &str) -> MethodBuilder {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn push_constant(&mut self, constant: Constant) -> u16 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn define_utf8(&mut self, string: &str) -> u16 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     fn define_class(&mut self, class: &str) -> u16 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn define_name_and_type(&mut self, name: &str, descriptor: &str) -> u16 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn define_fieldref(&mut self, class: &str, name: &str, descriptor: &str) -> u16 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     fn define_methodref(&mut self, class: &str, name: &str, descriptor: &str) -> u16 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     pub fn done(self) -> Classfile {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MethodBuilder` is never constructed
[INFO] [stdout]   --> src/classfile_builder.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub struct MethodBuilder<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/classfile_builder.rs:81:8
[INFO] [stdout]     |
[INFO] [stdout] 80  | impl<'a> MethodBuilder<'a> {
[INFO] [stdout]     | -------------------------- associated items in this implementation
[INFO] [stdout] 81  |     fn new(classfile: &'a mut ClassfileBuilder, access_flags: u16, name: &str, descriptor: &str) -> MethodBuilder<'a> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 95  |     pub fn get_static(&mut self, class: &str, name: &str, descriptor: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub fn invoke_virtual(&mut self, class: &str, name: &str, descriptor: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |     pub fn bipush(&mut self, value: i8) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 112 |     pub fn iadd(&mut self) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     pub fn do_return(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 |     fn increase_stack_depth(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 128 |     fn decrease_stack_depth(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn done(self) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/classfile_builder.rs:81:8
[INFO] [stdout]     |
[INFO] [stdout] 80  | impl<'a> MethodBuilder<'a> {
[INFO] [stdout]     | -------------------------- associated items in this implementation
[INFO] [stdout] 81  |     fn new(classfile: &'a mut ClassfileBuilder, access_flags: u16, name: &str, descriptor: &str) -> MethodBuilder<'a> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 95  |     pub fn get_static(&mut self, class: &str, name: &str, descriptor: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub fn invoke_virtual(&mut self, class: &str, name: &str, descriptor: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |     pub fn bipush(&mut self, value: i8) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 112 |     pub fn iadd(&mut self) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     pub fn do_return(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 |     fn increase_stack_depth(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 128 |     fn decrease_stack_depth(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn done(self) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/classfile.rs:598:9
[INFO] [stdout]     |
[INFO] [stdout] 598 |         write!(f, ": ");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/classfile.rs:598:9
[INFO] [stdout]     |
[INFO] [stdout] 598 |         write!(f, ": ");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 59 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 59 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "cabe34c1bbdf49826a7abafa928bd8effc9cf5c7580040ac4d36a99a0e656857", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cabe34c1bbdf49826a7abafa928bd8effc9cf5c7580040ac4d36a99a0e656857", kill_on_drop: false }`
[INFO] [stdout] cabe34c1bbdf49826a7abafa928bd8effc9cf5c7580040ac4d36a99a0e656857