[INFO] updating cached repository https://github.com/krishnakumar4a4/rust-java-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 618da43c3dbf1ba4d2b77ec3a483c5a73b80da51
[INFO] checking krishnakumar4a4/rust-java-rust against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrishnakumar4a4%2Frust-java-rust" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/krishnakumar4a4/rust-java-rust on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/krishnakumar4a4/rust-java-rust
[INFO] finished tweaking git repo https://github.com/krishnakumar4a4/rust-java-rust
[INFO] tweaked toml for git repo https://github.com/krishnakumar4a4/rust-java-rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/krishnakumar4a4/rust-java-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+45d050cde277b22a755847338f2acc2c7b834141" "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] 03312a57a4f8563cb6f4bf3dcb9f396980a37af8e3d4f240f29974d4cff82194
[INFO] running `"docker" "start" "-a" "03312a57a4f8563cb6f4bf3dcb9f396980a37af8e3d4f240f29974d4cff82194"`
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling rucaja v0.4.5
[INFO] [stderr]     Checking ascii v0.9.1
[INFO] [stderr]    Compiling rust-java-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling jni v0.11.0
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking combine v3.8.1
[INFO] [stderr]    Compiling backtrace v0.3.14
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr] warning: unused import: `jbyteArray`
[INFO] [stderr]  --> src/main.rs:9:85
[INFO] [stderr]   |
[INFO] [stderr] 9 | use jni_sys::{_jobject, JNINativeInterface_, JNINativeMethod, jclass, jint, JNIEnv, jbyteArray};
[INFO] [stderr]   |                                                                                     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/main.rs:55:80
[INFO] [stderr]    |
[INFO] [stderr] 55 |     let call_from_java_with_byte_array_ptr = call_from_java_with_byte_array as (extern "C" fn(e: jni_JNIEnv, c: jclass, a: jni_jbyteArray) -> jni_jbyteArray) as *mut c_void;
[INFO] [stderr]    |                                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `env`
[INFO] [stderr]    --> src/main.rs:101:39
[INFO] [stderr]     |
[INFO] [stderr] 101 | extern "C" fn call_from_java_with_int(env: &JNIEnv, _class: jclass, n: jint) {
[INFO] [stderr]     |                                       ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `env`
[INFO] [stderr]    --> src/main.rs:117:50
[INFO] [stderr]     |
[INFO] [stderr] 117 | extern "C" fn call_from_java_with_byte_array_arg(env: JNIEnv, _class: jclass, a: jni_jbyteArray) {
[INFO] [stderr]     |                                                  ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `jbyteArray`
[INFO] [stderr]  --> src/main.rs:9:85
[INFO] [stderr]   |
[INFO] [stderr] 9 | use jni_sys::{_jobject, JNINativeInterface_, JNINativeMethod, jclass, jint, JNIEnv, jbyteArray};
[INFO] [stderr]   |                                                                                     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/main.rs:55:80
[INFO] [stderr]    |
[INFO] [stderr] 55 |     let call_from_java_with_byte_array_ptr = call_from_java_with_byte_array as (extern "C" fn(e: jni_JNIEnv, c: jclass, a: jni_jbyteArray) -> jni_jbyteArray) as *mut c_void;
[INFO] [stderr]    |                                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `env`
[INFO] [stderr]    --> src/main.rs:101:39
[INFO] [stderr]     |
[INFO] [stderr] 101 | extern "C" fn call_from_java_with_int(env: &JNIEnv, _class: jclass, n: jint) {
[INFO] [stderr]     |                                       ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `env`
[INFO] [stderr]    --> src/main.rs:117:50
[INFO] [stderr]     |
[INFO] [stderr] 117 | extern "C" fn call_from_java_with_byte_array_arg(env: JNIEnv, _class: jclass, a: jni_jbyteArray) {
[INFO] [stderr]     |                                                  ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.99s
[INFO] running `"docker" "inspect" "03312a57a4f8563cb6f4bf3dcb9f396980a37af8e3d4f240f29974d4cff82194"`
[INFO] running `"docker" "rm" "-f" "03312a57a4f8563cb6f4bf3dcb9f396980a37af8e3d4f240f29974d4cff82194"`
[INFO] [stdout] 03312a57a4f8563cb6f4bf3dcb9f396980a37af8e3d4f240f29974d4cff82194