[INFO] cloning repository https://github.com/iamazy/mini-jvm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iamazy/mini-jvm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamazy%2Fmini-jvm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamazy%2Fmini-jvm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 755fb023890e325075c9a38e590b98c780426d70
[INFO] checking iamazy/mini-jvm against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamazy%2Fmini-jvm" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/iamazy/mini-jvm on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/iamazy/mini-jvm
[INFO] finished tweaking git repo https://github.com/iamazy/mini-jvm
[INFO] tweaked toml for git repo https://github.com/iamazy/mini-jvm written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/iamazy/mini-jvm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8df4a537704d7abe9bf555928990648c95d21a70568c5b0589eaf8c0855b3d5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a8df4a537704d7abe9bf555928990648c95d21a70568c5b0589eaf8c0855b3d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8df4a537704d7abe9bf555928990648c95d21a70568c5b0589eaf8c0855b3d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8df4a537704d7abe9bf555928990648c95d21a70568c5b0589eaf8c0855b3d5", kill_on_drop: false }`
[INFO] [stdout] a8df4a537704d7abe9bf555928990648c95d21a70568c5b0589eaf8c0855b3d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "RUSTUP_TOOLCHAIN=3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "-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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/tmp/crater-runner-fifo/jobserver-crater-fwd" "/opt/rustwide/cargo-home/bin/cargo" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cae290c56782df7908c063c7f2234a062ff96dca426a53569ae8e40ba315c844
[INFO] running `Command { std: "docker" "start" "-a" "cae290c56782df7908c063c7f2234a062ff96dca426a53569ae8e40ba315c844", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking humantime v2.0.1
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking smallvec v1.6.0
[INFO] [stderr]     Checking ahash v0.4.7
[INFO] [stderr]     Checking instructions v0.1.0 (/opt/rustwide/workdir/instructions)
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]    Compiling bzip2-sys v0.1.9+1.0.8
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking env_logger v0.8.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking simplelog v0.9.0
[INFO] [stderr]     Checking bytes v0.6.0
[INFO] [stderr]     Checking classfile v0.1.0 (/opt/rustwide/workdir/classfile)
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]     Checking thiserror v1.0.23
[INFO] [stderr]     Checking zip v0.5.9
[INFO] [stderr]     Checking hotspot v0.1.0 (/opt/rustwide/workdir/hotspot)
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> hotspot/src/runtime/frame.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entry`
[INFO] [stdout]   --> hotspot/src/oops/module.rs:64:21
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn add_read(entry: &ModuleEntry) {
[INFO] [stdout]    |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> hotspot/src/runtime/frame.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]    --> hotspot/src/classpath/mod.rs:124:12
[INFO] [stdout]     |
[INFO] [stdout] 124 |     pub fn size(&self) -> usize {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mutex`
[INFO] [stdout]   --> hotspot/src/oops/class.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 |     mutex: ReentrantMutex<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `clint_mutex`
[INFO] [stdout]   --> hotspot/src/oops/class.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     clint_mutex: Arc<Mutex<()>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `class_state`
[INFO] [stdout]   --> hotspot/src/oops/class.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 69 |     class_state: ClassState,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Field`
[INFO] [stdout]  --> hotspot/src/runtime/constant_pool.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Field(FieldIdRef),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Method`
[INFO] [stdout]  --> hotspot/src/runtime/constant_pool.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Method(MethodIdRef),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_field`
[INFO] [stdout]   --> hotspot/src/runtime/constant_pool.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn get_field(&self) -> FieldIdRef {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_method`
[INFO] [stdout]   --> hotspot/src/runtime/constant_pool.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn get_method(&self) -> MethodIdRef {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `constant_pool`
[INFO] [stdout]   --> hotspot/src/runtime/constant_pool.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     constant_pool: ConstantPoolRef,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cache`
[INFO] [stdout]   --> hotspot/src/runtime/constant_pool.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     cache: RefCell<HashMap<usize, ConstantCacheType>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entry`
[INFO] [stdout]   --> hotspot/src/oops/module.rs:64:21
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn add_read(entry: &ModuleEntry) {
[INFO] [stdout]    |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]    --> hotspot/src/classpath/mod.rs:124:12
[INFO] [stdout]     |
[INFO] [stdout] 124 |     pub fn size(&self) -> usize {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mutex`
[INFO] [stdout]   --> hotspot/src/oops/class.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 |     mutex: ReentrantMutex<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `clint_mutex`
[INFO] [stdout]   --> hotspot/src/oops/class.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     clint_mutex: Arc<Mutex<()>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `class_state`
[INFO] [stdout]   --> hotspot/src/oops/class.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 69 |     class_state: ClassState,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Field`
[INFO] [stdout]  --> hotspot/src/runtime/constant_pool.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Field(FieldIdRef),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Method`
[INFO] [stdout]  --> hotspot/src/runtime/constant_pool.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Method(MethodIdRef),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_field`
[INFO] [stdout]   --> hotspot/src/runtime/constant_pool.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn get_field(&self) -> FieldIdRef {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_method`
[INFO] [stdout]   --> hotspot/src/runtime/constant_pool.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn get_method(&self) -> MethodIdRef {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `constant_pool`
[INFO] [stdout]   --> hotspot/src/runtime/constant_pool.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     constant_pool: ConstantPoolRef,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cache`
[INFO] [stdout]   --> hotspot/src/runtime/constant_pool.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     cache: RefCell<HashMap<usize, ConstantCacheType>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.18s
[INFO] running `Command { std: "docker" "inspect" "cae290c56782df7908c063c7f2234a062ff96dca426a53569ae8e40ba315c844", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cae290c56782df7908c063c7f2234a062ff96dca426a53569ae8e40ba315c844", kill_on_drop: false }`
[INFO] [stdout] cae290c56782df7908c063c7f2234a062ff96dca426a53569ae8e40ba315c844