[INFO] updating cached repository https://github.com/douchuan/jvm
[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] [stderr] From https://github.com/douchuan/jvm
[INFO] [stderr]    8a14a1e..07dc3b5  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 07dc3b5c43dd50b4ce02a9b5fa4834c87cd0c40c
[INFO] checking douchuan/jvm against master#eaa02f599f651246d5d1b99e7a4c6fa8d04bc9dc for pr-69560
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdouchuan%2Fjvm" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/douchuan/jvm on toolchain eaa02f599f651246d5d1b99e7a4c6fa8d04bc9dc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+eaa02f599f651246d5d1b99e7a4c6fa8d04bc9dc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/douchuan/jvm
[INFO] finished tweaking git repo https://github.com/douchuan/jvm
[INFO] tweaked toml for git repo https://github.com/douchuan/jvm written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/douchuan/jvm already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+eaa02f599f651246d5d1b99e7a4c6fa8d04bc9dc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+eaa02f599f651246d5d1b99e7a4c6fa8d04bc9dc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 97d2174ee8b691b97af747591c4e7b1cff486a8d3a932df7065fb4601010bfe4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "97d2174ee8b691b97af747591c4e7b1cff486a8d3a932df7065fb4601010bfe4"`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking bzip2-sys v0.1.7
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking zip v0.5.4
[INFO] [stderr]     Checking jvm v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead.
[INFO] [stderr]    --> src/native/java_lang_System.rs:150:13
[INFO] [stderr]     |
[INFO] [stderr] 150 |     let v = std::env::home_dir().expect("home_dir failed");
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead.
[INFO] [stderr]    --> src/native/java_lang_System.rs:150:13
[INFO] [stderr]     |
[INFO] [stderr] 150 |     let v = std::env::home_dir().expect("home_dir failed");
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `current` is never read
[INFO] [stderr]   --> src/native/java_io_FileInputStream.rs:92:13
[INFO] [stderr]    |
[INFO] [stderr] 92 |     let mut current = -1i64;
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `current` is never read
[INFO] [stderr]   --> src/native/java_io_FileInputStream.rs:92:13
[INFO] [stderr]    |
[INFO] [stderr] 92 |     let mut current = -1i64;
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `ref_bytes` is never read
[INFO] [stderr]    --> src/main.rs:180:17
[INFO] [stderr]     |
[INFO] [stderr] 180 |         let mut ref_bytes = None;
[INFO] [stderr]     |                 ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f2`
[INFO] [stderr]    --> src/main.rs:324:13
[INFO] [stderr]     |
[INFO] [stderr] 324 |         let f2 = frame.read().unwrap();
[INFO] [stderr]     |             ^^ help: consider prefixing with an underscore: `_f2`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_ref`
[INFO] [stderr]   --> src/util/oop.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn is_ref(v: &Oop) -> bool {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_ref`
[INFO] [stderr]   --> src/util/oop.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn is_ref(v: &Oop) -> bool {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.31s
[INFO] running `"docker" "inspect" "97d2174ee8b691b97af747591c4e7b1cff486a8d3a932df7065fb4601010bfe4"`
[INFO] running `"docker" "rm" "-f" "97d2174ee8b691b97af747591c4e7b1cff486a8d3a932df7065fb4601010bfe4"`
[INFO] [stdout] 97d2174ee8b691b97af747591c4e7b1cff486a8d3a932df7065fb4601010bfe4