[INFO] cloning repository https://github.com/jgallag88/nu_jvmdb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jgallag88/nu_jvmdb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgallag88%2Fnu_jvmdb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgallag88%2Fnu_jvmdb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6fdbd04ce8571d5b3e2c549ba4f334a617eeef28
[INFO] checking jgallag88/nu_jvmdb against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgallag88%2Fnu_jvmdb" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jgallag88/nu_jvmdb on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jgallag88/nu_jvmdb
[INFO] finished tweaking git repo https://github.com/jgallag88/nu_jvmdb
[INFO] tweaked toml for git repo https://github.com/jgallag88/nu_jvmdb written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jgallag88/nu_jvmdb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mio v0.7.5
[INFO] [stderr]   Downloaded tokio v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec24e559a7f4a8a12b459a818beade7361faafae1c1723093254845647f66cd4
[INFO] running `Command { std: "docker" "start" "-a" "ec24e559a7f4a8a12b459a818beade7361faafae1c1723093254845647f66cd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec24e559a7f4a8a12b459a818beade7361faafae1c1723093254845647f66cd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec24e559a7f4a8a12b459a818beade7361faafae1c1723093254845647f66cd4", kill_on_drop: false }`
[INFO] [stdout] ec24e559a7f4a8a12b459a818beade7361faafae1c1723093254845647f66cd4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 108ad9eee23c04a40e31705acad44fdecb8510391d62bfac365ddead59b30a77
[INFO] running `Command { std: "docker" "start" "-a" "108ad9eee23c04a40e31705acad44fdecb8510391d62bfac365ddead59b30a77", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking pin-project-lite v0.1.11
[INFO] [stderr]     Checking bytes v0.6.0
[INFO] [stderr]     Checking instant v0.1.8
[INFO] [stderr]     Checking lock_api v0.4.1
[INFO] [stderr]    Compiling tokio v0.3.3
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.5
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]    Compiling tokio-macros v0.3.1
[INFO] [stderr]     Checking nu_jvmdb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Cursor`
[INFO] [stdout]  --> src/jdwp.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{Cursor, Read, Write};
[INFO] [stdout]   |               ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/jdwp.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 76 |         if (error_code != 0) {
[INFO] [stdout]    |            ^               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 76 -         if (error_code != 0) {
[INFO] [stdout] 76 +         if error_code != 0 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Location`
[INFO] [stdout]    --> src/jdwp.rs:230:65
[INFO] [stdout]     |
[INFO] [stdout] 230 |               use super::{Deserialize, JdwpConnection, Serialize, Location};
[INFO] [stdout]     |                                                                   ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 290 | / command_set! {
[INFO] [stdout] 291 | |     set_name: virtual_machine;
[INFO] [stdout] 292 | |     set_id: 1;
[INFO] [stdout] 293 | |     command {
[INFO] [stdout] ...   |
[INFO] [stdout] 374 | |     }
[INFO] [stdout] 375 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]    --> src/jdwp.rs:231:41
[INFO] [stdout]     |
[INFO] [stdout] 231 |               use std::io::{Cursor, Read, Write};
[INFO] [stdout]     |                                           ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 290 | / command_set! {
[INFO] [stdout] 291 | |     set_name: virtual_machine;
[INFO] [stdout] 292 | |     set_id: 1;
[INFO] [stdout] 293 | |     command {
[INFO] [stdout] ...   |
[INFO] [stdout] 374 | |     }
[INFO] [stdout] 375 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Location`
[INFO] [stdout]    --> src/jdwp.rs:230:65
[INFO] [stdout]     |
[INFO] [stdout] 230 |               use super::{Deserialize, JdwpConnection, Serialize, Location};
[INFO] [stdout]     |                                                                   ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 377 | / command_set! {
[INFO] [stdout] 378 | |     set_name: reference_type;
[INFO] [stdout] 379 | |     set_id: 2;
[INFO] [stdout] 380 | |     command {
[INFO] [stdout] ...   |
[INFO] [stdout] 405 | |     }
[INFO] [stdout] 406 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]    --> src/jdwp.rs:231:41
[INFO] [stdout]     |
[INFO] [stdout] 231 |               use std::io::{Cursor, Read, Write};
[INFO] [stdout]     |                                           ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 377 | / command_set! {
[INFO] [stdout] 378 | |     set_name: reference_type;
[INFO] [stdout] 379 | |     set_id: 2;
[INFO] [stdout] 380 | |     command {
[INFO] [stdout] ...   |
[INFO] [stdout] 405 | |     }
[INFO] [stdout] 406 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]    --> src/jdwp.rs:231:41
[INFO] [stdout]     |
[INFO] [stdout] 231 |               use std::io::{Cursor, Read, Write};
[INFO] [stdout]     |                                           ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 408 | / command_set! {
[INFO] [stdout] 409 | |     set_name: thread_reference;
[INFO] [stdout] 410 | |     set_id: 11;
[INFO] [stdout] 411 | |     command {
[INFO] [stdout] ...   |
[INFO] [stdout] 442 | |     }
[INFO] [stdout] 443 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::jdwp::Location`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::jdwp::Location;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cursor`
[INFO] [stdout]  --> src/jdwp.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{Cursor, Read, Write};
[INFO] [stdout]   |               ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/jdwp.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 76 |         if (error_code != 0) {
[INFO] [stdout]    |            ^               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 76 -         if (error_code != 0) {
[INFO] [stdout] 76 +         if error_code != 0 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Location`
[INFO] [stdout]    --> src/jdwp.rs:230:65
[INFO] [stdout]     |
[INFO] [stdout] 230 |               use super::{Deserialize, JdwpConnection, Serialize, Location};
[INFO] [stdout]     |                                                                   ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 290 | / command_set! {
[INFO] [stdout] 291 | |     set_name: virtual_machine;
[INFO] [stdout] 292 | |     set_id: 1;
[INFO] [stdout] 293 | |     command {
[INFO] [stdout] ...   |
[INFO] [stdout] 374 | |     }
[INFO] [stdout] 375 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]    --> src/jdwp.rs:231:41
[INFO] [stdout]     |
[INFO] [stdout] 231 |               use std::io::{Cursor, Read, Write};
[INFO] [stdout]     |                                           ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 290 | / command_set! {
[INFO] [stdout] 291 | |     set_name: virtual_machine;
[INFO] [stdout] 292 | |     set_id: 1;
[INFO] [stdout] 293 | |     command {
[INFO] [stdout] ...   |
[INFO] [stdout] 374 | |     }
[INFO] [stdout] 375 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Location`
[INFO] [stdout]    --> src/jdwp.rs:230:65
[INFO] [stdout]     |
[INFO] [stdout] 230 |               use super::{Deserialize, JdwpConnection, Serialize, Location};
[INFO] [stdout]     |                                                                   ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 377 | / command_set! {
[INFO] [stdout] 378 | |     set_name: reference_type;
[INFO] [stdout] 379 | |     set_id: 2;
[INFO] [stdout] 380 | |     command {
[INFO] [stdout] ...   |
[INFO] [stdout] 405 | |     }
[INFO] [stdout] 406 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]    --> src/jdwp.rs:231:41
[INFO] [stdout]     |
[INFO] [stdout] 231 |               use std::io::{Cursor, Read, Write};
[INFO] [stdout]     |                                           ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 377 | / command_set! {
[INFO] [stdout] 378 | |     set_name: reference_type;
[INFO] [stdout] 379 | |     set_id: 2;
[INFO] [stdout] 380 | |     command {
[INFO] [stdout] ...   |
[INFO] [stdout] 405 | |     }
[INFO] [stdout] 406 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]    --> src/jdwp.rs:231:41
[INFO] [stdout]     |
[INFO] [stdout] 231 |               use std::io::{Cursor, Read, Write};
[INFO] [stdout]     |                                           ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 408 | / command_set! {
[INFO] [stdout] 409 | |     set_name: thread_reference;
[INFO] [stdout] 410 | |     set_id: 11;
[INFO] [stdout] 411 | |     command {
[INFO] [stdout] ...   |
[INFO] [stdout] 442 | |     }
[INFO] [stdout] 443 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::jdwp::Location`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::jdwp::Location;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/jdwp.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let n = stream.read(&mut buf)?;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flags`
[INFO] [stdout]   --> src/jdwp.rs:74:13
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let flags = stream.read_u8()?; // TODO check response flag
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_flags`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/jdwp.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let mut stream = &mut *self.stream.borrow_mut();
[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/jdwp.rs:273:21
[INFO] [stdout]     |
[INFO] [stdout] 273 |                   let mut buf = vec![];
[INFO] [stdout]     |                       ----^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 290 | / command_set! {
[INFO] [stdout] 291 | |     set_name: virtual_machine;
[INFO] [stdout] 292 | |     set_id: 1;
[INFO] [stdout] 293 | |     command {
[INFO] [stdout] ...   |
[INFO] [stdout] 374 | |     }
[INFO] [stdout] 375 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/jdwp.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let n = stream.read(&mut buf)?;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reader`
[INFO] [stdout]    --> src/jdwp.rs:244:41
[INFO] [stdout]     |
[INFO] [stdout] 244 |                   fn deserialize<R: Read>(reader: &mut R) -> Result<Self> {
[INFO] [stdout]     |                                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader`
[INFO] [stdout] ...
[INFO] [stdout] 290 | / command_set! {
[INFO] [stdout] 291 | |     set_name: virtual_machine;
[INFO] [stdout] 292 | |     set_id: 1;
[INFO] [stdout] 293 | |     command {
[INFO] [stdout] ...   |
[INFO] [stdout] 374 | |     }
[INFO] [stdout] 375 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flags`
[INFO] [stdout]   --> src/jdwp.rs:74:13
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let flags = stream.read_u8()?; // TODO check response flag
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_flags`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/jdwp.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let mut stream = &mut *self.stream.borrow_mut();
[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/jdwp.rs:273:21
[INFO] [stdout]     |
[INFO] [stdout] 273 |                   let mut buf = vec![];
[INFO] [stdout]     |                       ----^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 290 | / command_set! {
[INFO] [stdout] 291 | |     set_name: virtual_machine;
[INFO] [stdout] 292 | |     set_id: 1;
[INFO] [stdout] 293 | |     command {
[INFO] [stdout] ...   |
[INFO] [stdout] 374 | |     }
[INFO] [stdout] 375 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `reader`
[INFO] [stdout]    --> src/jdwp.rs:244:41
[INFO] [stdout]     |
[INFO] [stdout] 244 |                   fn deserialize<R: Read>(reader: &mut R) -> Result<Self> {
[INFO] [stdout]     |                                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader`
[INFO] [stdout] ...
[INFO] [stdout] 290 | / command_set! {
[INFO] [stdout] 291 | |     set_name: virtual_machine;
[INFO] [stdout] 292 | |     set_id: 1;
[INFO] [stdout] 293 | |     command {
[INFO] [stdout] ...   |
[INFO] [stdout] 374 | |     }
[INFO] [stdout] 375 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `type_tag` and `location_idx` are never read
[INFO] [stdout]    --> src/jdwp.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 190 | pub struct Location {
[INFO] [stdout]     |            -------- fields in this struct
[INFO] [stdout] 191 |     pub type_tag: u8, // TODO use special type tag field
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 194 |     pub location_idx: u64,
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Location` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `description`, `jdwp_major`, `jdwp_minor`, `vm_version`, and `vm_name` are never read
[INFO] [stdout]    --> src/jdwp.rs:298:13
[INFO] [stdout]     |
[INFO] [stdout] 297 |         response_type: VersionReply {
[INFO] [stdout]     |                        ------------ fields in this struct
[INFO] [stdout] 298 |             description: String,
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] 299 |             jdwp_major: i32,
[INFO] [stdout]     |             ^^^^^^^^^^
[INFO] [stdout] 300 |             jdwp_minor: i32,
[INFO] [stdout]     |             ^^^^^^^^^^
[INFO] [stdout] 301 |             vm_version: String,
[INFO] [stdout]     |             ^^^^^^^^^^
[INFO] [stdout] 302 |             vm_name: String
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `VersionReply` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `classes` is never read
[INFO] [stdout]    --> src/jdwp.rs:312:13
[INFO] [stdout]     |
[INFO] [stdout] 311 |         response_type: ClassesBySignatureReply {
[INFO] [stdout]     |                        ----------------------- field in this struct
[INFO] [stdout] 312 |             classes: Vec<ClassesBySignatureReplyClass>
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ClassesBySignatureReply` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ref_type_tag`, `type_id`, and `status` are never read
[INFO] [stdout]    --> src/jdwp.rs:315:13
[INFO] [stdout]     |
[INFO] [stdout] 314 |         additional_type: ClassesBySignatureReplyClass {
[INFO] [stdout]     |                          ---------------------------- fields in this struct
[INFO] [stdout] 315 |             ref_type_tag: u8, // TODO could use custom type here
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout] 316 |             type_id: u64, // TODO this should be a referenceTypeId
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout] 317 |             status: u32 // TODO could use special enum here too
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ClassesBySignatureReplyClass` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `classes_by_signature` is never used
[INFO] [stdout]    --> src/jdwp.rs:306:21
[INFO] [stdout]     |
[INFO] [stdout] 306 |         command_fn: classes_by_signature;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `type_tag` and `location_idx` are never read
[INFO] [stdout]    --> src/jdwp.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 190 | pub struct Location {
[INFO] [stdout]     |            -------- fields in this struct
[INFO] [stdout] 191 |     pub type_tag: u8, // TODO use special type tag field
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 194 |     pub location_idx: u64,
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Location` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `classes` is never read
[INFO] [stdout]    --> src/jdwp.rs:325:13
[INFO] [stdout]     |
[INFO] [stdout] 324 |         response_type: AllClassesReply {
[INFO] [stdout]     |                        --------------- field in this struct
[INFO] [stdout] 325 |             classes: Vec<AllClassesReplyClass>
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `AllClassesReply` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `description`, `jdwp_major`, `jdwp_minor`, `vm_version`, and `vm_name` are never read
[INFO] [stdout]    --> src/jdwp.rs:298:13
[INFO] [stdout]     |
[INFO] [stdout] 297 |         response_type: VersionReply {
[INFO] [stdout]     |                        ------------ fields in this struct
[INFO] [stdout] 298 |             description: String,
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] 299 |             jdwp_major: i32,
[INFO] [stdout]     |             ^^^^^^^^^^
[INFO] [stdout] 300 |             jdwp_minor: i32,
[INFO] [stdout]     |             ^^^^^^^^^^
[INFO] [stdout] 301 |             vm_version: String,
[INFO] [stdout]     |             ^^^^^^^^^^
[INFO] [stdout] 302 |             vm_name: String
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `VersionReply` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ref_type_tag`, `type_id`, `signature`, and `status` are never read
[INFO] [stdout]    --> src/jdwp.rs:328:13
[INFO] [stdout]     |
[INFO] [stdout] 327 |         additional_type: AllClassesReplyClass {
[INFO] [stdout]     |                          -------------------- fields in this struct
[INFO] [stdout] 328 |             ref_type_tag: u8, // TODO could use custom type here
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout] 329 |             type_id: u64, // TODO this should be a referenceTypeId
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout] 330 |             signature: String,
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout] 331 |             status: u32 // TODO could use special enum here too
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `AllClassesReplyClass` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `classes` is never read
[INFO] [stdout]    --> src/jdwp.rs:312:13
[INFO] [stdout]     |
[INFO] [stdout] 311 |         response_type: ClassesBySignatureReply {
[INFO] [stdout]     |                        ----------------------- field in this struct
[INFO] [stdout] 312 |             classes: Vec<ClassesBySignatureReplyClass>
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ClassesBySignatureReply` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `all_classes` is never used
[INFO] [stdout]    --> src/jdwp.rs:321:21
[INFO] [stdout]     |
[INFO] [stdout] 321 |         command_fn: all_classes;
[INFO] [stdout]     |                     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exit` is never used
[INFO] [stdout]    --> src/jdwp.rs:368:21
[INFO] [stdout]     |
[INFO] [stdout] 368 |         command_fn: exit;
[INFO] [stdout]     |                     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `signature` and `mod_bits` are never read
[INFO] [stdout]    --> src/jdwp.rs:402:13
[INFO] [stdout]     |
[INFO] [stdout] 399 |         additional_type: Method {
[INFO] [stdout]     |                          ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 402 |             signature: String,
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout] 403 |             mod_bits: i32
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Method` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ref_type_tag`, `type_id`, and `status` are never read
[INFO] [stdout]    --> src/jdwp.rs:315:13
[INFO] [stdout]     |
[INFO] [stdout] 314 |         additional_type: ClassesBySignatureReplyClass {
[INFO] [stdout]     |                          ---------------------------- fields in this struct
[INFO] [stdout] 315 |             ref_type_tag: u8, // TODO could use custom type here
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout] 316 |             type_id: u64, // TODO this should be a referenceTypeId
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout] 317 |             status: u32 // TODO could use special enum here too
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ClassesBySignatureReplyClass` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `classes_by_signature` is never used
[INFO] [stdout]    --> src/jdwp.rs:306:21
[INFO] [stdout]     |
[INFO] [stdout] 306 |         command_fn: classes_by_signature;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `classes` is never read
[INFO] [stdout]    --> src/jdwp.rs:325:13
[INFO] [stdout]     |
[INFO] [stdout] 324 |         response_type: AllClassesReply {
[INFO] [stdout]     |                        --------------- field in this struct
[INFO] [stdout] 325 |             classes: Vec<AllClassesReplyClass>
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `AllClassesReply` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ref_type_tag`, `type_id`, `signature`, and `status` are never read
[INFO] [stdout]    --> src/jdwp.rs:328:13
[INFO] [stdout]     |
[INFO] [stdout] 327 |         additional_type: AllClassesReplyClass {
[INFO] [stdout]     |                          -------------------- fields in this struct
[INFO] [stdout] 328 |             ref_type_tag: u8, // TODO could use custom type here
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout] 329 |             type_id: u64, // TODO this should be a referenceTypeId
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout] 330 |             signature: String,
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout] 331 |             status: u32 // TODO could use special enum here too
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `AllClassesReplyClass` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `all_classes` is never used
[INFO] [stdout]    --> src/jdwp.rs:321:21
[INFO] [stdout]     |
[INFO] [stdout] 321 |         command_fn: all_classes;
[INFO] [stdout]     |                     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exit` is never used
[INFO] [stdout]    --> src/jdwp.rs:368:21
[INFO] [stdout]     |
[INFO] [stdout] 368 |         command_fn: exit;
[INFO] [stdout]     |                     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `signature` and `mod_bits` are never read
[INFO] [stdout]    --> src/jdwp.rs:402:13
[INFO] [stdout]     |
[INFO] [stdout] 399 |         additional_type: Method {
[INFO] [stdout]     |                          ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 402 |             signature: String,
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout] 403 |             mod_bits: i32
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Method` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `frame_id` is never read
[INFO] [stdout]    --> src/jdwp.rs:434:13
[INFO] [stdout]     |
[INFO] [stdout] 433 |         additional_type: Frame {
[INFO] [stdout]     |                          ----- field in this struct
[INFO] [stdout] 434 |             frame_id: u64, // TODO this should be a frameId type
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Frame` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `frame_id` is never read
[INFO] [stdout]    --> src/jdwp.rs:434:13
[INFO] [stdout]     |
[INFO] [stdout] 433 |         additional_type: Frame {
[INFO] [stdout]     |                          ----- field in this struct
[INFO] [stdout] 434 |             frame_id: u64, // TODO this should be a frameId type
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Frame` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: this warning originates in the macro `command_set` (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/jdwp.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |         writer.write_all(utf8);
[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] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 124 |         let _ = writer.write_all(utf8);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/jdwp.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |         writer.write_all(utf8);
[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] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 124 |         let _ = writer.write_all(utf8);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 25 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 25 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.45s
[INFO] running `Command { std: "docker" "inspect" "108ad9eee23c04a40e31705acad44fdecb8510391d62bfac365ddead59b30a77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "108ad9eee23c04a40e31705acad44fdecb8510391d62bfac365ddead59b30a77", kill_on_drop: false }`
[INFO] [stdout] 108ad9eee23c04a40e31705acad44fdecb8510391d62bfac365ddead59b30a77