[INFO] cloning repository https://github.com/bugaevc/jvm-bindgen
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bugaevc/jvm-bindgen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbugaevc%2Fjvm-bindgen"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbugaevc%2Fjvm-bindgen'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 81e0f0f46c85de25e7e7217f05d747eddb54617e
[INFO] checking bugaevc/jvm-bindgen against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbugaevc%2Fjvm-bindgen" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bugaevc/jvm-bindgen on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/bugaevc/jvm-bindgen
[INFO] finished tweaking git repo https://github.com/bugaevc/jvm-bindgen
[INFO] tweaked toml for git repo https://github.com/bugaevc/jvm-bindgen written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/bugaevc/jvm-bindgen already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded classfile-parser v0.3.2
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e2ced69ff0a23a851d2c8bbc3b5cadf86621f54264efa7c1aa0ad7b369883342
[INFO] running `"docker" "start" "-a" "e2ced69ff0a23a851d2c8bbc3b5cadf86621f54264efa7c1aa0ad7b369883342"`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking proc-macro2 v0.4.13
[INFO] [stderr]     Checking quote v0.6.6
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking nom v4.0.0
[INFO] [stderr]     Checking classfile-parser v0.3.2
[INFO] [stderr]     Checking jvm-bindgen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/lib.rs:9:15
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::io::{Read, Write};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Cow`
[INFO] [stderr]   --> src/lib.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::borrow::Cow;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `is_upper`
[INFO] [stderr]   --> src/lib.rs:59:10
[INFO] [stderr]    |
[INFO] [stderr] 59 |     for (is_upper, chars) in &java_name.chars().group_by(|c| c.is_uppercase()) {
[INFO] [stderr]    |          ^^^^^^^^ help: consider prefixing with an underscore: `_is_upper`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_class_name`
[INFO] [stderr]   --> src/lib.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | fn get_class_name<'a>(class: &'a ClassConstant, class_file: &'a ClassFile) -> &'a str {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `RustFmt`
[INFO] [stderr]   --> src/lib.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | struct RustFmt(Child);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `launch`
[INFO] [stderr]   --> src/lib.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn launch() -> io::Result<RustFmt> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `stdin`
[INFO] [stderr]   --> src/lib.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn stdin(&mut self) -> &mut ChildStdin { self.0.stdin.as_mut().unwrap() }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `stdout`
[INFO] [stderr]   --> src/lib.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn stdout(&mut self) -> &mut ChildStdout { self.0.stdout.as_mut().unwrap() }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `transform_name`
[INFO] [stderr]   --> src/lib.rs:53:1
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn transform_name(java_name: &str) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gen_method`
[INFO] [stderr]   --> src/lib.rs:85:1
[INFO] [stderr]    |
[INFO] [stderr] 85 | fn gen_method(class_file: &ClassFile, method: &method_info::MethodInfo) -> TokenStream {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bindgen`
[INFO] [stderr]   --> src/lib.rs:95:1
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn bindgen(class_name: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:121:5
[INFO] [stderr]     |
[INFO] [stderr] 121 |     write!(rustfmt.stdin(), "{}", gen);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/lib.rs:9:15
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::io::{Read, Write};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Cow`
[INFO] [stderr]   --> src/lib.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::borrow::Cow;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `is_upper`
[INFO] [stderr]   --> src/lib.rs:59:10
[INFO] [stderr]    |
[INFO] [stderr] 59 |     for (is_upper, chars) in &java_name.chars().group_by(|c| c.is_uppercase()) {
[INFO] [stderr]    |          ^^^^^^^^ help: consider prefixing with an underscore: `_is_upper`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `stdout`
[INFO] [stderr]   --> src/lib.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn stdout(&mut self) -> &mut ChildStdout { self.0.stdout.as_mut().unwrap() }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:121:5
[INFO] [stderr]     |
[INFO] [stderr] 121 |     write!(rustfmt.stdin(), "{}", gen);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.71s
[INFO] running `"docker" "inspect" "e2ced69ff0a23a851d2c8bbc3b5cadf86621f54264efa7c1aa0ad7b369883342"`
[INFO] running `"docker" "rm" "-f" "e2ced69ff0a23a851d2c8bbc3b5cadf86621f54264efa7c1aa0ad7b369883342"`
[INFO] [stdout] e2ced69ff0a23a851d2c8bbc3b5cadf86621f54264efa7c1aa0ad7b369883342